Design and build puts design, cost and construction under one contract and one point of responsibility. For most occupiers it is the fastest route from lease signing to moving in, because the design develops with live costs rather than being priced after the fact. The firms on this page offer it as a core service; some are design led studios with construction capability, others are contractors with in house design teams. The difference shows in the work, so look at the projects.
Alphabetical within each size band. Nobody pays to appear here.
Design led D&B firms start with workplace strategy and the look of the space, then build it. They suit brands where the office is part of the identity. Construction led firms start with programme, cost certainty and site delivery, and bring design in to serve that. They suit occupiers who want a good, reliable office on time and on budget. Neither is better; pick the one that matches what you would be most upset to get wrong.
Paid placements, clearly labelled. Featured firms are still verified the same way and still sit in the alphabetical list below.
Top of office design and build companies with direct contact buttons on the card. Six slots per size band, first come first served.
See featured listingsTop of office design and build companies with direct contact buttons on the card. Six slots per size band, first come first served.
See featured listingsTop of office design and build companies with direct contact buttons on the card. Six slots per size band, first come first served.
See featured listingsGrouped by the floor areas each firm is set up to deliver, because that is the first thing that rules a contractor in or out. Alphabetical within each band, featured firms included, so nothing is hidden behind a paywall.
Typical projects £50k to £500k for scale ups, professional services and creative firms. One team designs, builds and furnishes.
London's only full service workplace consultancy specifically for SMEs. Limits to 5 projects at a time. Offsets 20 tonnes of carbon per £200k spent.
Design and build, boutique band.
The core of the London occupier market. £300k to £5m projects, usually design and build, with dedicated project managers.
Global delivery capability for multinational clients. 45+ years experience.
Design and build, mid market band, trading since 1979.
End to end refurbishment. 12 month defect period aftercare. Global brand client base.
Design and build, mid market band, trading since 2001. Names Hugo Boss and Airbnb among its clients.
Defect free delivery ethos. Projects £1m to £50m+. Fiercely independent. Directly employs many tradespeople.
Design and build, mid market band, trading since 2000. Names Virgin Media and O2 among its clients.
Office AND laboratory design & build. Science/biotech sector strength. Cambridge Oxford Arc and London focus.
Design and build, mid market band, trading since 2000, 60+ staff.
Directly employs own tradesmen (rare in sector). Strong charity/not for profit sector presence.
Design and build, mid market band, trading since 1978. Names Shelter and L'Oréal among its clients.
Cut & carve refurbishments (complex, high impact). B Corp values. National multi site rollouts.
Design and build, mid market band, trading since 1998.
One stop shop with strong sub contractor network and in house tradesmen.
Design and build, mid market band.
10,000+ projects completed.
Design and build, mid market band, trading since 1977. Names Lacoste and ServiceNow among its clients.
Three divisions: Lite (under £500k), Interiors (larger schemes), Regions (Cambridge/Home Counties). Wellness driven design.
Design and build, mid market band, trading since 1997, ~100–150 staff. Names Tech Companies among its clients.
End to end bespoke design & build. In house M&E team. 30+ years London specific experience.
Design and build, mid market band, trading since 1987, ~120–148 staff. Names Hampshire Trust Bank and Aristocrat among its clients.
Integrated services (fit out + M&E + IT infrastructure). London, Berkshire, Surrey, Kent coverage.
Design and build, mid market band. Names AVMI and CNBC London among its clients.
25+ years experience across London, Manchester and Hampshire offices.
Design and build, mid market band, trading since 1990. Names Clearwater International and Tata Communications among its clients.
International luxury brands. Prestigious capital projects across Dublin, London and Middle East.
Design and build, mid market band, trading since 2004.
Heritage buildings to modern developments. 15% faster than industry average. 1,000 to 50,000 sq ft projects.
Design and build, mid market band, trading since 2000.
Right first time mindset. Manages multiple trades in house. Multi year client relationships.
Design and build, mid market band. Names Spaces/IWG Plc and AutoTrader among its clients.
4D Approach (Define, Design, Deliver, Devote). Fixed price guarantees. 3 year Zencare aftercare warranty. 5% profits donated to charity.
Design and build, mid market band, trading since 2008, ~30 staff. Names Legal Sector among its clients.
Landlord Cat A programmes, corporate headquarters and multi floor phased schemes. Usually with an independent architect and cost consultant.
UK's leading fit out specialist. 91% net promoter score. Projects up to £200m.
Design and build, enterprise band, trading since 1942, part of Morgan Sindall Group plc, ~1,000 staff. Names Virgin Media O2 and GSK among its clients.
Heritage preservation, sustainable refurbishment, public sector. 500,000+ sq ft delivered in prestigious London locations.
Design and build, enterprise band, trading since 1852, part of Willmott Dixon Group, 4,000+ (group) staff.
Tell us the floor area, the budget and the timing and we will introduce three suitable firms from the directory. No fee, no obligation, and no company pays for the introduction.
Get matched| Office size | Typical Cat B cost | Typical programme on site | Contractor band |
|---|---|---|---|
| Under 3,000 sq ft | £50 to £120 per sq ft | 4 to 8 weeks | Boutique |
| 3,000 to 10,000 sq ft | £60 to £150 per sq ft | 8 to 16 weeks | Boutique or mid market |
| 10,000 to 30,000 sq ft | £80 to £150 per sq ft | 12 to 24 weeks | Mid market |
| 30,000 sq ft and above | £80 to £200+ per sq ft | 16 to 30+ weeks | Enterprise |
Ranges are for standard to good specification Cat B work in London. Add 4 to 12 weeks for design, consents and procurement before work starts. Furniture, IT and AV are usually priced separately. Full cost guide.
Usually on fees and programme, not always on construction cost. The saving comes from fewer professional appointments and no tender period. The risk is less price competition on the build, which a fixed price contract and an independent cost check address.
Check the contract. Most D&B firms assign design rights to the client on final payment, but some retain them. It matters if you later want another firm to extend or alter the scheme.