{"id":768292,"date":"2024-12-20T08:04:58","date_gmt":"2024-12-20T08:04:58","guid":{"rendered":"https:\/\/www.architectsjournal.co.uk\/?p=768292"},"modified":"2024-12-23T08:11:24","modified_gmt":"2024-12-23T08:11:24","slug":"threefold-architects-retrofits-neoclassical-office-building-on-londons-regent-street","status":"publish","type":"post","link":"https:\/\/www.architectsjournal.co.uk\/buildings\/threefold-architects-retrofits-neoclassical-office-building-on-londons-regent-street","title":{"rendered":"Threefold Architects retrofits Neoclassical office building on London\u2019s Regent Street"},"content":{"rendered":"

The practice, which has worked on several projects for The Crown Estate since participating In the AJ\u2019s Office for the Future competition<\/a> In 2016, aimed to transform its existing commercial property through the creation of \u2018flexible and healthy\u2019 office spaces to support greater collaboration between occupants.<\/p>\n

This thinking was applied to 12 Little Portland Street, a Grade II-listed office building dating from the 1920s, close to Oxford Circus and Broadcasting House.<\/p>\n

Threefold based its overall approach to the project on four principles: minimising waste through auditing, preserving and re-use; restoring heritage; future-proofing fabric; and creating workspaces that promote wellbeing.<\/p>\n

Given the desire to move away from the model of large, single occupiers in the post-pandemic working environment, the remodelled building now provides smaller, more flexible and fully accessible spaces to attract a diverse occupancy mix and support hybrid working.<\/p>\n

\"\"<\/p>\n

The building\u2019s fabric and services have been \u2018significantly upgraded\u2019 to improve energy performance and address the circular economy, according to the practice, with extensive use of natural and reclaimed materials. Threefold\u2019s interventions aimed to celebrate the grandeur of the existing building, including restoring the fa\u00e7ade. Internally, the generous proportions of each space have been maximised, window reveals have been enhanced and period features refurbished and echoed by new design elements, while planting and colour add visual interest.<\/p>\n

A new BMS provides fully upgraded mechanical and electrical services throughout the building, while heating and cooling are served via a high-efficiency recovery condenser.<\/p>\n

Existing raised access floors were removed and reused in other projects while existing primary and secondary glazing was fully reused on site.<\/p>\n

The roof now features a new terrace for outdoor events plus extensive all year-round foliage in line with the \u2018Wild West End\u2019 greening strategy to encourage biodiversity and improve air quality. Bee blocks and bird and bat boxes have also been incorporated into the external walls to support urban wildlife.<\/p>\n

\"\"<\/p>\n

\n

Architect’s view<\/h3>\n

The 12 Little Portland Street project presented a fantastic opportunity to work with The Crown Estate to revitalise a heritage building and, in doing so; create a series of modern workspaces that promote health, happiness and wellbeing.<\/p>\n

This project celebrates heritage, promotes decarbonisation, enhances biodiversity and demonstrates how through sensitive and innovative design, existing buildings can be adapted to have bright and flexible futures.
\nJack Hosea, founding director, Threefold Architects<\/em><\/p>\n<\/div>\n

\n

 <\/p>\n

\"\"<\/p>\n<\/div>\n

Project data<\/h3>\n

Start on site<\/strong> November 2022
\nCompletion<\/strong>\u00a0November 2024
\nGross internal floor area<\/strong> 2,484m2
\n<\/sup>Form of contract<\/strong>\u00a0Design and Build
\nConstruction cost<\/strong> Undisclosed
\nArchitect<\/strong> Threefold Architects
\nExecutive architect<\/strong> Gravity Design
\nClient<\/strong> The Crown Estate
\nStructural engineer<\/strong> Heyne Tillet Steel
\nM&E consultant<\/strong> Watkins Payne
\nQS<\/strong> Quantem
\nAcoustic consultant<\/strong> Hann Tucker Associates
\nProject manager<\/strong> Dendy Byrne
\nCDM co-ordinator<\/strong> TFT consultants
\nApproved building inspector<\/strong> Assent BC
\nMain contractor<\/strong> Artemis interior Services
\nCAD software used<\/strong> Vectorworks<\/p>\n

Environmental performance data<\/h3>\n

Percentage of floor area with daylight factor >2%<\/strong> Not available
\nPercentage of floor area with daylight factor >5%<\/strong> Not available
\nOn-site energy generation<\/strong> Nil
\nAnnual mains water consumption<\/strong> 5.28 m3<\/sup>\/occupant
\nAirtightness at 50Pa<\/strong> Not available
\nHeating and hot water load<\/strong> 28.86 kWh\/m2<\/sup>\/yr
\nOverall area-weighted U-value<\/strong> Not available
\nDesign life<\/strong> 15 years (services only)
\nEmbodied carbon<\/strong> 199.35 kgCO2<\/sub>eq\/m2
\n<\/sup>Whole-life carbon<\/strong> 585.06 kgCO2<\/sub>eq\/m2
\n<\/sup>Annual CO2<\/sub> emissions<\/strong> 23.9 kgCO2<\/sub>eq\/m2<\/sup><\/p>\n","protected":false},"excerpt":{"rendered":"

The practice, which has worked on several projects for The Crown Estate since participating In the AJ\u2019s Office for the Future competition In 2016, aimed to transform its existing commercial property through the creation of \u2018flexible and healthy\u2019 office spaces to support greater collaboration between occupants. This thinking was applied to 12 Little Portland Street, …<\/p>\n","protected":false},"author":59337,"featured_media":768315,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_oasis_is_in_workflow":0,"_oasis_original":0,"ep_exclude_from_search":false},"categories":[706],"tags":[1342,101438,3122],"yoast_head":"\nThreefold Architects retrofits Neoclassical office building on London\u2019s Regent Street<\/title>\n<meta name=\"description\" content=\"Threefold Architects has completed the \u2018deep retrofit\u2019 of a Neoclassical office building on London\u2019s Regent Street for The Crown Estate\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.architectsjournal.co.uk\/buildings\/threefold-architects-retrofits-neoclassical-office-building-on-londons-regent-street\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" 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