Stiff + Trevillion
Stiff + Trevillion is a London-based architectural and interior design studio, founded in the early 1980s, delivering sustainable refurbishment, heritage restoration, and contemporary new-build projects across workplace, residential, leisure, and hotel sectors for institutional real estate clients.
- Company typePrivate
- Founded1980
- HeadquartersLondon, United Kingdom
- Headcount51–100
- GTM typeB2B
- OfferingServices
What Stiff + Trevillion does
Stiff + Trevillion is an independently owned architectural and design studio based in London (16 Woodfield Road, W9 2BE), founded in the early 1980s by Mike Stiff and Andy Trevillion and operating as a company limited by guarantee. The practice provides full architectural and interior design services across four primary sectors: workplace, residential, private homes and interiors, leisure, and hotels, with particular emphasis on sustainable refurbishment of existing buildings, heritage restoration in conservation contexts, and contemporary new-build mixed-use schemes in central London.
The studio's core technical specialisation is sustainable retrofit at the highest certification tiers, exemplified by TBC.London (BREEAM Outstanding, WELL Platinum, NABERS 5*, net zero in operation) and The Fitzrovia (BREEAM Outstanding, WELL Platinum, NABERS 5*). Material reuse is a documented competency: the firm salvaged 20 tonnes of 1930s structural steel at TBC.London, saving an estimated 48 tonnes of CO₂. Project scale typically ranges from ~6,000 to 154,000 sq ft commissions for institutional clients including Credit Suisse, Brookfield Properties, M&G, Native Land, Cadogan Estate, FORE Partnership, and Ashby Capital.
The business model is professional services: revenue is generated through project-based fees on architectural commissions, custom-quoted by scope and complexity, with acquisition via direct enterprise relationships, referrals, and competitive tender for larger schemes. The studio employs 51–100 people across a single London location, with no disclosed external ownership or parent company, and no acquisitions, funding rounds, or geographic expansion are evidenced. Marketing relies on a content-led website, journal publications, industry awards (RIBA, BCO, Civic Trust, World Architecture Festival), and organic social channels rather than paid acquisition.
Stiff + Trevillion firmographics
Firmographics- Name
- Stiff + Trevillion
- Legal name
- Stiff + Trevillion
- Website
- https://stiffandtrevillion.com
- Company type
- Private
- Founded year
- 1980
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Stiff + Trevillion is a London-based architectural and interior design studio, founded in the early 1980s, delivering sustainable refurbishment, heritage restoration, and contemporary new-build projects across workplace, residential, leisure, and hotel sectors for institutional real estate clients.
- Ownership category
- akta.pro rank
Where Stiff + Trevillion is headquartered
LocationHeadquarters
- HQ city
- London
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
Stiff + Trevillion business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- Architectural and Design Services: Professional services revenue generated through architectural design, planning, and project delivery for commercial, residential, and mixed-use development projects. Revenue is project-based and varies by scope, scale, and complexity of commissions.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels6 records
Stiff + Trevillion product offering
Product offeringCore offering
Stiff + Trevillion is an architectural and design studio providing full-service building design, refurbishment, and interior architecture across workplace, residential, leisure, and hotel sectors in London. The practice specialises in sustainable refurbishments, heritage building restoration, and contemporary new-build projects, with particular expertise in net-zero carbon design, material reuse, and BREEAM/WELL-certified sustainable construction.
Product overview
Stiff + Trevillion is an architectural and design studio offering comprehensive architectural services. Their portfolio spans workplace/commercial buildings, residential (including private homes and multi-unit apartments), leisure and retail spaces, and hotels. The practice specializes in sustainable refurbishments, heritage building restoration, and contemporary new-build projects, with a focus on net-zero carbon buildings, material reuse, and environmentally conscious design.
Differentiator
Problem solved
Functional benefit
Quantifiable outcome
- TBC.London: 20 tonnes of 1930s steel beams salvaged and reused, saving estimated 48 tonnes of CO2 equivalent to driving around earth 50 times
- +3 more outcomes
Companies that use Stiff + Trevillion
Customer profileNamed customers12 records
Segments3 records
Ideal customer profiles3 records
Stiff + Trevillion technology and API
TechnologyAPI detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Stiff + Trevillion partnerships and signals
Strategic signalScale indicators2 records
Recent moves4 records
Expansion highlights3 records
Stiff + Trevillion competitors and assessment
Company assessmentDirect peers
- Sheppard Robson: London architecture practice with a long track record in workplace, residential, and infrastructure projects, broadly comparable size and competing for the same Tier 1 developer commissions.
- Allies and Morrison: Long-established London architecture practice of comparable scale and reputation, working across commercial, residential, and cultural projects with a similar London-centric footprint and enterprise client base.
- Allford Hall Monaghan Morris (AHMM): London-headquartered architecture practice of similar size and award pedigree (multiple RIBA Stirling Prize shortlistings), competing for the same workplace, residential, and mixed-use mandates in the capital.
- Haworth Tompkins: Mid-sized London architecture studio focused on theatre, cultural, workplace and residential projects, broadly comparable in scale and London-only operating model with overlapping client types.
- Fletcher Priest: London-based architecture practice of broadly similar size with strong workplace, residential, and masterplanning portfolios, frequently shortlisted and award-winners in the same categories as Stiff + Trevillion.
- Bennetts Associates: Independent UK architecture practice operating across commercial, residential, leisure, and education, comparable in scale and ethos to Stiff + Trevillion with similar client profile of institutional developers.
- Lifschutz Davidson Sandilands: London-focused architecture studio with mixed-use, workplace, and residential portfolios, operating at broadly similar scale and competing for central London redevelopment mandates.
Broad incumbents
- David Chipperfield Architects: Much larger, internationally recognised London-headquartered architecture practice; competes for landmark commercial, cultural, and residential commissions at a higher scale and brand tier than Stiff + Trevillion.
- Foster + Partners: Global mega-practice headquartered in London; competes across the same commercial, residential, and mixed-use sectors as Stiff + Trevillion but at vastly larger scale and with international reach.
- Grimshaw: Established London-rooted, globally operating architecture and engineering practice; overlaps with Stiff + Trevillion on transit-oriented workplace and mixed-use projects but with materially greater resources and geographic spread.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat3 records
Key risks6 records
Key highlights6 records
Customer concentration
Stiff + Trevillion social profiles
Digital presenceStiff + Trevillion financial estimates
Financial estimateRevenue estimate
Valuation estimate
Stiff + Trevillion leadership team
Management profileNumber of profiles
Stiff + Trevillion funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Stiff + Trevillion M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Stiff + Trevillion
What does Stiff + Trevillion do?
Stiff + Trevillion is an architectural and design studio providing full-service building design, refurbishment, and interior architecture across workplace, residential, leisure, and hotel sectors in London. The practice specialises in sustainable refurbishments, heritage building restoration, and contemporary new-build projects, with particular expertise in net-zero carbon design, material reuse, and BREEAM/WELL-certified sustainable construction.
Is Stiff + Trevillion a public or private company?
Stiff + Trevillion is a private company. It is currently operating.
When was Stiff + Trevillion founded?
Stiff + Trevillion was founded in 1980. It employs 51 to 100 people.
Where is Stiff + Trevillion based?
Stiff + Trevillion is headquartered in London, United Kingdom, in the Europe region.
How does Stiff + Trevillion make money?
One revenue line is on record: architectural and Design Services.
Who are Stiff + Trevillion's main competitors?
Direct peers on record are Sheppard Robson, Allies and Morrison, Allford Hall Monaghan Morris (AHMM), Haworth Tompkins, Fletcher Priest, Bennetts Associates and Lifschutz Davidson Sandilands. Broad incumbents are David Chipperfield Architects, Foster + Partners and Grimshaw.
Does Stiff + Trevillion have an API?
No public API is recorded for Stiff + Trevillion.