Conservation & Heritage Project Experience
About DB3 Founded in 1883, DB3 Group is an award-winning, dynamic practice providing advisory services through three business units: DB3 Architecture & Design, DB3 Building Services Engineering and DB3 Professional Services. DB3 Group has six studios across the UK in Leeds, London, Manchester, Glasgow, Cardiff and Aberystwyth, so we are never too far away from your project. Renowned for our quality design and technical delivery, we have long standing relationships with some of the biggest global brands across private and public market sectors. We provide multi-disciplinary expertise aimed at meeting the diverse needs of our client base, from architectural vision to the completed build.
We embrace the latest technology to assist in our process and operations for design, visualisation, design team coordination and more. Maintaining a focus on delivering the project on time, with exceptional quality and within cost, ensures long term value is designed into facilities that are easy and safe to operate, sustainable, minimise energy use and are cost effective to maintain. Our dedicated team of experienced professionals provide a quality service regardless of project value, size or complexity, to deliver the best for our clients. Working collaboratively, we aspire to make this an enjoyable process and build relationships which result in us returning to work for the same clients on future projects.
Glasgow
EXPERTISE Architecture Building Services Engineering Design Management Decarbonisation Passivhaus Design Principal Designer (CDM) Principal Designer (Building Regulations) NEC Supervisor Technical Advisor
Leeds Manchester
Aberystwyth
Cardiff
London
About DB3
SECTORS Commercial Conservation & Heritage Data Centres Education Energy Industrial & Manufacturing Retail Residential Science & Labs Sports, Leisure & Wellbeing Waste
Preserving and Honouring Historic Spaces DB3 has extensive experience working with historic buildings, listed assets and heritage sites across the UK. Our multi-disciplinary teams support clients through the conservation, regeneration, refurbishment and ongoing management of buildings with architectural and cultural significance. We work with public and private sector clients, including local authorities, government bodies, developers and major institutions. Our teams understand the additional care that heritage projects require, working closely with conservation officers, heritage bodies and wider stakeholders to navigate listed building requirements and protect the character of each asset.
From essential repairs and fabric upgrades to major refurbishment, retrofit and regeneration projects, we look at how existing buildings can be improved while retaining the features that make them significant. This includes improving energy performance and building services, addressing ageing fabric and infrastructure and adapting buildings to meet changing operational and accessibility requirements. Where buildings need to remain open, we carefully plan and phase works around day to day operations, helping clients continue to welcome staff, visitors and the public throughout delivery.
DB3 Conservation & Heritage
NATIONAL LIBRARY OF WALES
Estate Decarbonisation Location: Aberystwyth, Ceredigion Expertise Area: Architecture, Building Services Engineering DB3 Group were appointed as Lead Consultant, architects and MEP engineers for a Welsh Government backed decarbonisation project at the National Library of Wales.
boilers to be removed. The four associated plant rooms will be re-engineered to support the move away from gas, while the Library’s existing heating distribution systems will remain in place.
The National Library of Wales, Aberystwyth is a Grade II* Listed Building which lies within a Grade II* Registered Historic Park and Garden.
Given the historical significance of the building, our architecture team worked to secure various consents, including planning permission for air source and ground source heat pumps, roof mounted solar panels and ground mounted solar panels in adjacent fields. Fabric improvements were key elements of the project. In Book Stack 2, the existing timber windows were repaired, and secondary glazing was installed, while in Book Stack 3, the original 40 year old aluminium windows were replaced with double glazed units. Reroofing and insulation upgrades were undertaken to prepare for solar panel installations. This work required careful sequencing to minimise disruption, with localised closures and tented structures used to protect the live site.
The brief provided by the National Library of Wales required DB3 to investigate and design ways in which the National Library could significantly decrease its carbon footprint and also eliminate the use of fossil fuels on site by 2028. The decarbonisation project designed by DB3 involves a multi-faceted approach which sees sustainable technologies, as well as renewable technologies, being introduced on the National Library’s site as well an extensive programme of fabric improvements. The main step towards eliminating fossil fuels from the site is the replacement of the Library’s six existing gas fired boilers with reversible air source and ground source heat pumps. Two new external compounds will house the air source heat pumps, while the ground source heat pumps will be located in a field adjacent to the Library, using 52 boreholes extending 100 metres below ground. A thermal response test was also undertaken during the design phase to inform the system design. The reversible heat pumps will provide both heating and cooling across the Library, allowing the existing chiller units and 5MW of gas fired
The project has also presented a number of challenges. Storm Darragh caused unexpected damage to the temporary tent structures, requiring changes to the planned works. At the same time, fabric repairs, M&E upgrades and wider decarbonisation works have been progressing across the Library, involving several contractors working alongside one another. Coordinating these different packages, while managing programme and budget pressures, has been a key part of the project, particularly where works overlap or are dependent on one another.
DB3 Conservation & Heritage
NATIONAL MUSEUM WALES
Estate Strategy Plan Location: Cardiff, Glamorgan
National Museum Wales comprise a group of seven museums, including the National Museum Cardiff, St Fagans National Museum of History and Big Pit National Coal Museum. Their mission is to preserve, interpret and promote the cultural heritage, history and natural environment of Wales for present and future generations.
A thorough understanding of the museum’s vision, financial constraints and timeline has been fundamental to shaping the estate management plan. Initial project phases focus on the east and south wings, prioritising a full service replacement ahead of the museum’s centenary celebrations in 2027.
DB3 is collaborating with National Museum Wales to develop a comprehensive estate management plan for the Grade I listed National Museum of Cardiff. This ten year strategic plan outlines the long term development, conservation and operational management of the museum. Key areas of focus include ongoing maintenance, and restoration to accommodate the museum’s evolving needs while ensuring optimal space utilisation, financial sustainability and compliance with heritage and regulatory standards.
Beyond essential upgrades, a comprehensive reconfiguration and refurbishment strategy is being developed to optimise the museum’s functionality. Budget considerations are central to this process, particularly as the safe removal, transportation, and storage of specialist collections alone exceed £250,000. DB3 is actively working with the trust to develop a sustainable funding strategy, implementing a staggered approach to project delivery to ease financial pressures.
Gifted to the people of Wales in 1907, the National Museum Cardiff holds cultural and historical significance. With this legacy in mind, the project’s objective is to enhance accessibility, sustainability, and inclusivity, ensuring the museum remains a welcoming and functional space for everyone in Wales for generations to come.
To ensure financial sustainability, DB3 is partnering with specialist consultants to identify and enhance revenue generating opportunities. This includes the refurbishment and strategic enhancement of visitor facilities, such as the museum’s restaurant, café and retail spaces.
Located in the heart of Cardiff’s civic centre, the museum houses Wales’ national collections of art, geology and natural history, alongside major touring exhibitions and temporary displays. The building encompasses over 700 rooms, including grand halls, gallery spaces, research facilities, conservation laboratories and administrative offices. Additionally, the museum hosts a diverse programme of events, conferences, weddings, private viewings and film productions, making it a dynamic cultural hub. Due to the museum’s intensive operational schedule, DB3 is closely collaborating with the trust to establish a phased programme of works that minimises disruption to daily activities.
The museum’s Grade I listed status requires close collaboration with key heritage organisations, including Cadw, to ensure that all interventions respect and preserve the building’s architectural integrity while improving visitor accessibility and engagement. Over time, various wings and theatres within the museum have been gifted by private benefactors. In such cases, DB3 works directly with stakeholders to align modernisation efforts with their legacy and intent.
DB3 Conservation & Heritage
Expertise Area: Architecture
NATIONAL MUSEUM OF WALES
Main Hall Restoration Location: Cardiff, Glamorgan Expertise Areas: Architecture The restoration of the Main Hall at National Museum Cardiff focused on improving the usability of the impressive domed space while respecting its Grade I listed surroundings. Poor acoustics had previously limited how the Hall could be used, so acoustic panels were carefully introduced to improve sound quality without detracting from its historic character.
The improvements have opened the Main Hall up to a much wider range of uses, including conferences, dinners, banquets and other events. This allows the Museum to make better use of one of its most prominent spaces and provides opportunities to generate additional revenue through corporate and private hire. The work has given the Hall a greater role within the Museum while retaining the character of the original space.
NATIONAL MUSEUM OF WALES
Fabric Improvements Location: Cardiff, Glamorgan
DB3 were appointed to deliver repairs and improvements to the fabric of the Grade I listed National Museum Cardiff. DB3 lead a multidisciplinary design team, carrying out detailed surveys and developing designs.
operational and protect its contents throughout the works. Our conservation team also prepared heritage impact assessments and consulted with relevant stakeholders throughout the design process.
Works focused on repairs, replacement and conservation across the Museum’s complex roofscape, including the installation of new rainwater pipes. DB3 carried out detailed condition surveys followed by concept and detailed design. A drone survey was also used to create a 3D model of the roof, helping the team understand its condition and coordinate the proposed works.
To manage cost, programme and risk, DB3 developed a structured approach which included:
Security, weatherproofing and safety were key considerations throughout due to the Museum’s priceless collections and programme of temporary exhibitions. Construction therefore had to be carefully phased to allow the Museum to remain
A robust gateway process with cost plans and client sign off at each RIBA Stage, supported by detailed surveys and design proposals
Opening up critical areas to confirm existing construction and reduce risk before works began
Early consideration of phasing, access constraints and contractor facilities
Detailed programmes for each package of work
DB3 Conservation & Heritage
Expertise Areas: Architecture
PEMBROKESHIRE COUNTY COUNCIL
South Quay Redevelopment Location: South Quay, Pembrokeshire Expertise Area: Architecture Pembroke has a strong tourism offer, with its historic town centre, castle and quayside attracting visitors to the area. However, economic decline over the past 25 years has left several historic buildings around South Quay vacant and in need of repair. As part of a wider regeneration programme, Pembrokeshire County Council enlisted DB3 to provide architectural services, helping to conserve the town’s historic buildings while bringing derelict and underused sites back into use. Phase One The initial phase, supported by the Welsh Government’s Transforming Towns programme and the Transformation Capital Grants Scheme, celebrates Pembroke’s rich history as the birthplace of the Tudor dynasty. The scheme transforms a collection of underutilised buildings into the Henry Tudor Visitor Centre, incorporating an exhibition space, a public library, café and landscaped gardens overlooking the quay. The design combines a mixture of refurbishment and new build, whilst emphasising key heritage features such as medieval burgage plots. Working adjacent to the Grade I listed Pembroke Castle and across several Grade II listed buildings, we collaborated closely with conservation bodies and heritage stakeholders throughout the project. Key design decisions were developed in consultation with CADW, with detailed visualisations, heritage impact assessments, material samples and technical proposals used to demonstrate how the scheme would preserve the historic character of the quay. This included safeguarding key sightlines of the castle, which informed the overall massing strategy. Rather than introducing a single dominant building, we proposed a collection of smaller buildings that mirror the exciting townscape. Several of the listed buildings were in a poor state of repair, having suffered years of neglect, weather ingress and structural deterioration. One of the buildings, a former hotel, presented an extra challenge as it had extensive fire damage. To protect the building and allow restoration works to begin, a large temporary enclosure was erected. Throughout, the focus was on retaining
and repairing as much of the original building as possible, with demolition only considered where parts of the structure could not be safely preserved. During Phase One works, DB3 also supported Pembroke Town Council in securing Levelling Up Funding for the next phase of the project. Following the successful bid, we were appointed to deliver the second phase of the project. DB3 led the public consultation process, engaging with local stakeholders and addressing concerns around accessibility and the future use of the site. Phase Two The second phase, known as The Pembroke Hub, transforms 7 and 8 Northgate Street into a three storey community hub. Delivered in partnership with Norman Industries, the scheme provides a training space for people returning to independent living. There is a strong emphasis on community inclusion with a gallery on the ground floor for local groups to use to showcase their work to the public. Neurodivergent friendly design has led the way with acoustics, lighting and finishes, being mindful of the buildings end user’s needs. The scheme has been designed to be a calm peaceful, creating a non-busy, non-fussy environment that doesn’t over stimulate. Adjacent to the estuary, the site saw significant flood risk challenges. Rather than relying solely on flood resistance measures, the buildings have been designed to be flood resilient. Accessibility was a key consideration throughout both phases. Despite the challenging sloping topography and historic building constraints, the development has been designed to achieve full compliance with current accessibility legislation. The project introduces Pembroke’s first Changing Places facility, which features accessible toilets and assisted access shower facilities. Environmental improvements include the restoration of historic buildings, building a designated bat house, the development of gardens in the Tudor Burgage plots and creation of a new roof top garden.
DB3 Conservation & Heritage
PEMBROKESHIRE COUNTY COUNCIL
Haverfordwest Regeneration Location: Haverfordwest, Pembrokshire Expertise Area: Architecture DB3 is supporting the regeneration of Haverfordwest Castle, including the restoration of the castle bailey and redevelopment of the former jail building. The works will bring these historic areas back into use, creating new cultural spaces while retaining the character and heritage of the castle. Haverfordwest Castle The project aims to transform the castle bailey into a functional events space, suitable for hosting concerts and other gatherings. Key works include repairs to the historic castle walls and ensuring the space is appropriately adapted for its new purpose. Conversion of the Former Jail Building into a Visitor Centre The former jail building, a Grade II listed structure, dates back to the 19th century. Originally constructed as a jail, it was later converted into a police station and then an archive centre in the 1970s. The building has been unused for the past decade and is now being repurposed into a visitor and science centre. The conversion involves substantial refurbishment within the constraints of the existing Grade II listing.
Key elements of the project include:
Roof and floor replacement: Upgrading structural components while respecting the historical integrity of the building
Archaeological considerations: Collaboration with archaeologists to ensure historical elements are preserved
Removal of unsympathetic Modifications: Eliminating modern alterations that detract from the building’s historic character
Environmental performance Improvements: Enhancing the building’s energy efficiency while maintaining its breathable masonry construction
Structural and ecological repairs: Addressing significant structural issues and accommodating ecological constraints, including the retention and enhancement of two separate bat roosts
Radon protection: Implementing measures to protect the site against radon
DB3 Conservation & Heritage
NATIONAL MUSEUM WALES
St Fagans Castle & National Museum of History Location: Cardiff, Glamorgan Expertise Area: Architecture, Passivhaus Design We are working on the regeneration of St Fagans Castle and its estate, working to restore and preserve this historical site for future generations. Our approach has been centred on a balance between conservation and the integration of sustainable practices, ensuring the castle remains a vital part of the cultural landscape. Through essential repairs and modern upgrades, we are breathing new life into this significant landmark.
St Fagans National Museum of History
St Fagans Castle
Surveys were carried out that identified that the administration block required essential maintenance work. Prior to implementing any remedial work, the opportunity was taken by National Museum Wales to look at how different interventions could reduce carbon emissions.
St Fagans Castle is a Grade I listed Elizabethan manor house, situated on the site of an old Norman motte and bailey castle. The current mansion house was built around 1580. In 1946, the castle, along with eighteen acres of land, was donated to the National Museum of Wales as the site for a national open air museum. The castle has been statutorily recognised and protected in the highest category since 1977. Its courtyard features a Grade II* listed lead water cistern, while many other garden structures hold Grade II status. We are currently collaborating with National Museum Wales and the St Fagans estates team to carry out necessary maintenance and repairs to the listed building. The castle has suffered significant disrepair, with water damage and mould threatening both the integrity of the structure and its collections. As a result, the first floor has been temporarily closed to the public, with all collections removed, limiting visitor access to the ground floor. This situation has negatively impacted the visitor experience and restricted the building’s use for other revenue streams, such as filming and weddings, which previously took place at the castle. Working closely with the conservation officer and Cadw, we have obtained approvals for a full reroofing of the castle. Additionally, we are undertaking extensive fabric repairs to restore the building to its former glory. We are working closely with specialists and surveyors to address issues such as condensation, dampness and mould.
Open to the public since 1 July 1948, the Grade II listed museum stands in the grounds of the castle and gardens. DB3 were appointed by National Museum Wales as architects and Passivhaus consultants on the refurbishment of the administration building at St. Fagans National Museum of History.
Following on from this National Museum Wales received funding to explore Passivhaus retrofit (Enerphit) for this project. A fabric first approach has been taken during stage 3 to look at how Enerphit can best be achieved. In the gardens, we are currently working on two Victorian glasshouses used for potting and propagation by the gardening team. The glasshouses feature their original Victorian glass, which requires careful restoration. Additionally, the grounds include the House of the Future, constructed in 2000 as a showcase for cutting edge green building technologies. It was later repurposed as an education centre but required adaptions. We recently completed a reroofing project for this building. Masterplan In the museum grounds, there are over 50 historic buildings from across Wales which have been rebuilt at the Museum including; a Victorian school, a medieval church and a Workmen’s Institute, chronicling the historical lifestyle, culture, and architecture of the Welsh people. As part of our work, we are looking at a masterplan to connect all elements of the facility together, creating a seamless visitor experience.
DB3 Conservation & Heritage
NATIONAL MUSEUM WALES
Big Pit National Coal Museum Location: Blaenavon, Torfaen Expertise Area: Architecture
A number of buildings have a protected status. The Powder House, Saw mill, office and the Electrical Workshop, have Grade II listed building status. The Pit Head Building, Headframe & Tram Circuit and the Miners’ Bathhouse have Grade II* listed building status. In our role as architects, we have several ongoing projects at the museum focusing on repair and enhancement to the existing buildings. A Grade II Listed building, The Pithead Baths houses four exhibition spaces and uses objects and images to tell the story of coal mining in Wales. There is also a multifunctional space serving as an education room, canteen and lecture theatre, housing both temporary and permanent exhibitions. However, the building is currently in a state of deterioration.
As architects, we are leading a sensitive retrofit project, focusing on fabric repairs and essential upgrades to preserve its historical integrity while ensuring it meets modern functional needs. Aligned with National Museum Wales’ decarbonisation efforts, a ground source heat pump has been installed to improve energy efficiency, along with double glazing and roof insulation. The Fan House, located at the rear of the site, is one of the most important buildings in any coal mine. Its ventilation system plays a crucial role in bringing oxygen into the mine, removing or diluting unwanted gases, dust, and fumes and maintaining a cooler, drier environment. As an underground experience is available to all visitors, the Fan House remains fully operational today. However, we are currently reviewing the replacement of the existing fan systems, as they are outdated and require frequent cleaning due to black mould buildup. Cleaning the fans often results in temporary mine closures, which negatively impact the visitor experience. The Tram Shed, once vital for transporting coal to and from the mine, is at risk of collapse. To preserve its legacy, we have been working closely with structural engineers to stabilise the structure. As part of this effort, we are implementing temporary support works.
DB3 Conservation & Heritage
As a vital regeneration project within the unique Blaenafon Industrial Landscape, and a designated UNESCO World Heritage Site, our work at Big Pit plays a crucial role in preserving and enhancing Wales’ rich coal mining heritage. Once employing up to 1,300 workers, Big Pit has now transformed into an interactive museum dedicated to the operational preservation of this industrial legacy. Through careful restoration and modernisation, we are ensuring that this historic site continues to educate and inspire future generations.
NATIONAL MUSEUM WALES
The National Slate Museum Location: Llanberis, Gwynedd Expertise Area: Client Advisor The National Slate Museum, previously known as the Welsh Slate Museum and the North Wales Quarrying Museum, is located at Gilfach Ddu, within Padarn Country Park in Llanberis, Gwynedd. The museum sits in the 19th century workshops of the once operational Dinorwic Quarry and is dedicated to preserving and showcasing the history of Wales’ slate industry. As an anchor point on the European Route of Industrial Heritage (ERIH) and part of National Museum Wales, the museum plays a key role in telling the story of the region’s industrial past. The workshops were built in 1870 on land created from spoil from the nearby Vivian Quarry. After the quarry closed in 1969, the site was transformed into a museum. Today, a £21 million redevelopment project is underway to secure the future of the museum and its collections. With support from Cyngor Gwynedd, the Welsh and UK governments, and the National Lottery Heritage Fund, the museum will become a key site for interpreting the Slate Landscape of Northwest Wales UNESCO World Heritage Site.
The redevelopment involves essential repairs to the Grade I building, partial demolition of later additions, reworking a listed office block, improving disability access, and creating new visitor spaces. As Client Advisor, we have worked closely with the client throughout the process, supporting tasks like the temporary relocation of 8,000 artefacts to a secure site. Our experience in regeneration and conservation has been vital to ensuring the project’s success, guiding the client every step of the way.
DB3 Conservation & Heritage
This redevelopment is a prime example of regenerative development. It preserves the site’s heritage while making it more accessible and relevant for the future. The restoration of the Grade I Listed building, the reconfiguration of existing structures, and the addition of new facilities, like a learning centre, shop and café, will ensure the museum’s long term success. The project also focuses on sustainability, accessibility, and community engagement, bringing new opportunities to the local area while highlighting the cultural importance of Wales’s slate industry.
ROYAL COLLEGE OF MUSIC
Concert Hall Refurbishment
Location: South Kensington, London Expertise Areas: Architecture
The project involved the restoration of the entire hall, improving its acoustic performance and creating a modern facility suitable for both college use and external hire. As part of the works, the existing air conditioning, heating and audio systems were removed and replaced with new equipment.
To accommodate these upgrades, the vaulted plaster ceiling was carefully removed and new panels were specially fabricated to match the originals. Specialist sound and communication systems were also introduced, including music and video recording equipment. These were discreetly integrated into the hall to provide modern performance facilities while retaining the character and architectural detailing of the original space.
DB3 Conservation & Heritage
DB3 was appointed as Architect and CDM Coordinator to restore the concert hall at the Royal College of Music, returning the historic space to its original architectural character. First opened in 1901, the hall has since been used for teaching, rehearsals and classical music performances.
UNIVERSITY OF LEICESTER
Engineering Building Location: Leicester, Leicestershire Expertise Areas: Architecture DB3 was appointed by the University of Leicester to support the conservation and future development of its Grade II* listed Engineering Building, designed by James Stirling and James Gowan and completed in 1963. Recognised as an important example of post-war British architecture, the building was Grade II* listed in 1993. Our initial brief involved a feasibility study to explore opportunities to increase the functional space within the building. This led to further research through the University archives, including a review of original drawings, and the preparation
of a Statement of Significance and Conservation Management Plan for the engineering workshop and tower. DB3 also supported the development of a Heritage Partnership Agreement between the University and the Local Authority. This provided an agreed approach to repairs and replacement works affecting the building’s external fabric, internal fixtures and fittings, helping to streamline future decisions and allowing the University to plan its ongoing conservation and maintenance works more effectively.
CADW
Denbigh Castle Visitor Centre Location: Denbigh, Denbighshire
DB3 was appointed as architect for the new Visitor Centre at Denbigh Castle, part of Cadw’s wider programme to improve visitor access and experience at its historic landmarks. The project involved the demolition of the existing visitor building, with archaeological investigations carried out ahead of the main construction works. The new centre improved the presentation and interpretation of the castle and town walls, helping visitors better understand their relationship with the surrounding historic landscape.
Sustainability was incorporated throughout the building, which achieved a BREEAM ‘Very Good’ rating and EPC A. Features include a sedum roof with biodiverse planting, a ground source heat pump, photovoltaic panels, low energy lighting and water saving fittings. Materials from the previous visitor centre were also reused, with demolition aggregates recycled and existing stonework used to face the new gabions. Timber used within the building was responsibly sourced.
DB3 Conservation & Heritage
Expertise Areas: Architecture
WARWICK TOWN COUNCIL
The Court House Warwick Location: Warwick, Warwickshire Expertise Areas: Architecture DB3 worked with Warwick Town Council on the refurbishment and conservation of the Grade I listed Court House on Jury Street as part of the wider ‘Unlocking Warwick’ initiative. Designed by Francis Smith and built between 1724 and 1731, the building sits within the Warwick Conservation Area and includes historic ironwork by Thomas Paris and Benjamin Taylor. The works included alterations and refurbishment to the Visitor Centre and Yeomanry Museum, alongside improvements to make the building more accessible. A new platform lift and rear entrance doors were introduced, together with glass canopies and new external lighting. The project also included specialist masonry repairs,
new heating and ventilation to the basement and replacement floor joists within the Assembly Room. Conservation works were carried out to the two coats of arms and lead statue on the front elevation, while the building’s ballroom was refurbished for continued use for civic receptions. The project formed part of ‘Unlocking Warwick’, which sought to improve access to the Court House and help visitors better understand the building, its conservation and its place within the wider history of Warwick. The works also supported the long term protection and continued use of the historic building.
HALAMAR
Chancery Lane Location: City of London Expertise Areas: Architecture
The project involved significant work to the existing buildings while retaining their listed character. The new fifth floor was carefully designed and constructed to match the existing mansard, while thermal and acoustic upgrades were introduced to meet current standards without compromising the historic structure. Finishes were developed in consultation with the relevant historic buildings team.
The location also presented a number of practical challenges. The buildings sit mid-terrace on Chancery Lane, with restricted access from the one way street, while existing restaurant and retail tenants at ground floor remained open throughout construction. A means of escape serving neighbouring properties also passed through the building at fourth floor level. This had to be rerouted to accommodate the new residential layout while remaining operational during the works and within the completed scheme. The completed development achieved a BREEAM ‘Very Good’ rating.
DB3 Conservation & Heritage
DB3 was involved in the refurbishment and change of use of a group of listed buildings on Chancery Lane in London, converting the existing office accommodation into 44 one, two and three bedroom apartments, together with two new rooftop penthouses.
MACHYNLLETH TOWN COUNCIL
Castlereagh Memorial Clock Location: Machynlleth, Powys Expertise Area: Architecture DB3 worked on the restoration of the Castlereagh Memorial Clock, which is a prominent feature in the centre of Machynlleth, Powys. The work involved the cleaning and emergency repairs to the crenelated masonry, the repair of the existing clock mechanism and the modification of the rainwater disposal system in order to prevent future deterioration. The second phase of work involved the installation of a safe access system internally. The work on the first phase was funded by the Machynlleth Town Council, Powys County Council and CADW under the Township Partnership Scheme and through local fundraising efforts. The
masonry repairs were carried out by Grosvenor Construction Ltd. The town clock was built on the site of the Old Town Hall with a market hall at ground floor level. The clock was built to mark the coming of age of Charles Stuart Vane-Tempest, Viscount Castlereagh, the eldest son of the Fifth Marquess of Londonderry. The foundation stone was laid during the festivities that took place on the 15 July 1874.
SWANSEA UNIVERSITY
Singleton Abbey Location: Swansea, County of Glamorgan
DB3 was appointed by Swansea University to support the conservation of Grade II listed Singleton Abbey, which forms the focal point of the University’s Singleton Campus and houses the Vice-Chancellor’s Department and central administration.
Works included the replacement of ashlar dressings, finials and copings, alongside window repairs, cleaning and re-rendering. Each intervention was carefully considered to address the condition of the building while retaining its historic fabric and architectural character.
The DB3 team initially prepared a Conservation Management Plan for the Abbey, providing a framework for the ongoing care and conservation of the historic building. This was followed by a programme of fabric repairs and conservation works, with the first phase focusing on the east elevation.
Originally developed as a private residence, Singleton Abbey evolved significantly during the 19th century before becoming part of the University in 1920. Its continued use as a central administrative building makes its ongoing conservation an important part of maintaining the University’s historic estate.
DB3 Conservation & Heritage
Expertise Areas: Architecture
Architecture and much more
DB3 Architecture & Design Providing RIBA Chartered sustainable architecture, urban design, landscape design and masterplanning, with supporting services including BIM, visualisation and interior design. DB3’s architectural team comprises 35+ architects, supported by a strong team of 40+ technologists and architectural assistants with the capacity to resource projects across all sectors.
DB3 Building Services Engineering Offering CIBSE Chartered Mechanical and Electrical Engineering to all sectors. The team have particular experience in the leisure sector, having delivered numerous wet and dry leisure facilities across the UK. The team incorporates Building Physics Engineering, are CIBSE Low Carbon Energy Assessors and offer Thermal Modelling (DSM). DB3 Professional Services The team deliver building surveying, retail project management, principal designer, contract administration and NEC supervisor roles, across the UK. Working alongside DB3’s architectural and M&E teams, these roles can be incorporated into a multi-disciplinary offering or procured as an independent service.
About DB3
As a multi-disciplinary consultancy, our expertise extends beyond architecture, meaning our clients can pick and choose key areas or combine a number of our service skill sets and project management skills when selecting our single point service offer. DB3 Group offers the following four individual business units.
Accreditations AJ100 Company RIBA Chartered Practice Certified Passivhaus Designers CIAT Registered Practice CIBSE Directory of Practices & Firms CIBSE Low Carbon Energy Assessors ISO9001:2015 Quality Management System ISO14001:2015 Environmental Management System Altius Approved Elite Vendor H&S SSIP Accredited through Once for All Safe Contractor through Alcumus APS Corporate Member Constructionline Gold Member Achilles RISQS Accredited Cyber Essentials Plus
Awards DB3 Group:
Shortlisted: Constructing Excellence Yorkshire & Humber 2026 ‘SME of the Year’; Winner - Insider Wales 2025 ‘Architectural Practice of the Year’; Shortlisted - Building Awards 2025 ‘Architectural Practice of the Year’; Shortlisted - Insider West Midlands ‘Architectural Practice of the Year’; Winner - UK Enterprise Client Service Excellence Award 2024 ‘Best Sustainable Architecture Practice’; Shortlisted - The Grafters Awards 2024 ‘Best RIBA Architectural Practice’; ’Shortlisted MMC Awards 2024 ‘Women in Modern Methods of Construction’; Winner - Build Architecture Awards ‘Best Sustainable Architecture & Design Firm 2023’; Shortlisted - West Midlands Insider Awards 2023 ‘Architecture Practice of the Year’; Winner - Yorkshire Insider Awards 2023 ‘Architecture Practice of the Year’; Shortlisted - COBBA 2023 ‘Business Development Professional’; Shortlisted - UKREiiF Awards 2023 ‘Consultant of the Year’ & ‘People & Skills Torchbearer’; Shortlisted COMBA 2023 ‘Architecture Practice’ & ‘Business Development Professional’; Shortlisted - Grafters Awards 2023 ‘Architecture Practice’; Winner – COMBA & COBBA 2022 ‘Architect of the Year’; 2021 Digital Enterprise Top 100; Winner – Insider Property Awards 2018 ‘Architectural Practice of the Year’ & ‘Design Excellence’; Shortlisted – BD Awards 2017 ‘Sports & Leisure Architect of the Year’; RICS Design Through Innovation Award 2017; Insider Property Industry Awards 2015 ‘Highly Commended Architectural Firm of the Year’ National Library of Wales: Winner - Constructing Exllence Wales 2026 ‘Retrofit of the Year’ Shortlisted - Insider Wales 2026 ‘Sustainability Project of the Year’ Woking High School: Shortlisted - Education Estates 2025 ‘Project of the Year Inclusive Design’ Printworks Campus: Shortlisted - MMC Awards 2024 ‘Project of the Year Education (Secondary & Higher)’ Helensburgh Waterfront Development: Highly Commended - Argyll & Bute Awards 2023 ‘Aesthetic Design’; Finalist - Planning Awards 2023 ‘Outstanding Contribution to Placemaking: Best Use of Arts, Culture or Sport’; Highly Commended IStructE Awards 2022 ‘Leisure Project’ Llys Cadwyn Regeneration: Winner – Cardiff Property Awards 2021 and Ystadau Cymru 2021 Award for ‘Creating Economic Growth’; Highly Commended – British Construction Industry Awards 2021; CLAW Project of the Year Awards 2021; Winner –Constructing Excellence Awards Wales 2021 ‘Building of the Year’
Adidas Oxford Street: Gold Winner – London Design Awards 2020 Leeds College of Music: Winner – RIBA Regional Award 2015 ‘Small Project Award’; Shortlisted – Insider Property Industry Awards Yorkshire 2018 ‘Regeneration Project of the Year’, Education Estates Awards 2018 ‘Refurbishment Project’, AJ Retrofit Awards 2018 ‘Further & Higher Education’; Constructing Excellence Yorkshire & Humber Awards 2018 ‘Building Project of the Year’ Chancery Lane Residential: Shortlisted – London Construction Awards 2018 ‘London Build Excellence’ & ‘Regeneration Project’ Airedale Air Conditioning: Winner – RICS 2017 Regional Award ‘Design through innovation’ Ysgol Craig Y Deryn School: RTPI Wales Planning Award 2014 Kirkcaldy Leisure Centre: Commended – SCALA Awards 2014 ‘Civic Building of the Year’ MOMA Machynlleth Tannery Gallery: CPRW Awards 2014 ‘Special Award’ Michael Woods Leisure Centre: Highly Commended – SCALA Awards 2014 ‘Civic Building of the Year’; Scottish Property Awards 2014 ‘Architectural Excellence’ Marks & Spencer, Liverpool: Highly Commended – CIAT Award 2010 ‘Technical Excellence’ PAN Emirates, Dubai: Shortlisted – Retail Interiors Awards 2010 ‘Best International Interior’ Threeways School, Bath: BCSE Awards 2009 ‘Inspiring Design for Special Schools’ ASDA Stores Supplier Awards: 2009 ‘Best Consultant’ & ‘Best EDLC (Every Day Low Cost) Initiative’ University of Huddersfield, Creative Art Building: Bronze Awards – RIBA White Rose Award 2009; Commendation – CIAT Award 2009; Shortlisted – RICS Pro Yorkshire Awards 2009 University of Huddersfield, Milton Centre: Winner – Insider Yorkshire Renaissance Awards 2006 ‘Best Restoration Project’ Aberdovey Yacht Club: Winner – Snowdonia National Park Awards 1992 ‘Good Design in the Countryside Award’ St Giles Business Park for the DBRW: Winner – Prince of Wales Design Awards 1990 ‘Good Design’ Llwydcoed Crematorium: Winner - RIBA Wales Architecture Awards 1971
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