Cousins and Cousins

What Cousins and Cousins does

Cousins and Cousins is a London-based architecture and interior design practice founded in 2012 by Ben and Jelena Cousins, operating from a studio in Primrose Hill, London. The practice delivers a unified architecture-and-interior-design service across five core areas: residential (homes, refurbishments, extensions), workplace (offices, co-working spaces, commercial fit-outs), interiors (full interior design and FF&E specification), culture (museums, public buildings, pavilions), and hospitality (hotels, restaurants, co-living). Its technical methodology centers on sustainable design, including application of Passivhaus 'fabric first' principles to Grade-listed heritage buildings, timber modular construction techniques for reduced site disruption, and biophilic design for wellness-oriented environments. The firm holds ISO 9001:2015 certification (achieved December 2018, re-certified February 2021 with zero non-conformances) and has earned industry recognition including the RIBA London Award, Brick Awards, and BD Architect of the Year – Interior Architect.

The firm operates as a professional services business on a project-based fee model, quoting fees per scope rather than via published pricing tiers. Go-to-market is relationship-driven: projects are sourced through direct client inquiries, referrals, repeat clients, editorial coverage in design publications (Dezeen, Architects' Journal, Grand Designs), and participation at industry events such as MIPIM and RESI. The client base is horizontal and enterprise-grade, including property developers (Crosstree, Uncommon, Henley Investments, GFZ, Stonegate Homes), legal firms (Axiom Law), hospitality operators (Adir Group), government bodies (Copeland Borough Council, Kristiansand Municipality), and cultural institutions (Museum of Fine Arts Budapest). While headquartered in London, the practice has delivered projects across the UK, Norway, Hungary, Austria, France, and Indonesia, indicating opportunistic international reach. The firm is privately held and founder-owned, with no external institutional investors, and operates with a headcount of 11–50 employees including RIBA-qualified architects and heritage specialists.

Name

Cousins and Cousins

Legal name

Cousins & Cousins

Website

https://cousinsandcousins.com

Company type

Private

Founded year

2012

Operating status

Operating

Headcount range

11–50 employees

Short description

Cousins and Cousins is a London-based, founder-owned architecture and interior design practice founded in 2012, delivering unified architecture-and-interior services across residential, workplace, culture, and hospitality sectors for enterprise clients and high-net-worth individuals in the UK and internationally.

Ownership category

akta.pro rank

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Architectural Services: Full-service architectural design for residential, commercial, cultural, and hospitality projects from inception through completion across all RIBA stages.
2. Interior Design Services: Interior design and FF&E (furniture, fixtures and equipment) specification services for residential and commercial projects.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

Cousins & Cousins is an architecture and interior design practice providing full-service design from RIBA Stage 0 through Stage 7 across residential, workplace, cultural, and hospitality sectors. Services encompass architectural design, interior design and FF&E specification, heritage conservation, sustainable/Passivhaus design, and modular construction for both private and corporate clients in the UK and internationally.

Product overview

Cousins & Cousins is a London-based architecture and interior design practice offering a unified service combining architectural design and interior design across multiple sectors. The practice operates across five core service areas: Residential (homes, private houses, refurbishments, extensions), Workplace (offices, co-working spaces, commercial fit-outs), Interiors (full interior design and FF&E), Culture (museums, public buildings, pavilions), and Hospitality (hotels, restaurants, co-living). The practice was founded in 2012 by Ben and Jelena Cousins and has grown into an award-winning international practice with projects spanning residential, commercial, hospitality, and cultural sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• Residential Architectural Services
• Workplace Architectural Services
• Interior Design Services

Quantifiable outcome

• Achieved near Passivhaus energy standards on Victorian heritage property
• +2 more outcomes

Named customers15 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Two partnerships are on record, tiered notable.

• Gustafsson PorternotableStrategic or Co-development PartnerSelected together for invited competition to transform 16th century castle in Lengenfeld, lower Austria. Chosen as one of eight teams from 50 international entries for their experience in dealing sensitively with historic context.
• EkkistnotableStrategic or Co-development PartnerCollaborated on Davidson Prize 2021 submission for Onni - an innovative work-life balance solution. Ekkist provided human health and wellbeing in buildings consultancy expertise.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Stiff + Trevillion: London-based architecture and interior design practice of comparable size, focused on high-end residential, workplace, and heritage projects. Operates in the same HNW/developer client segment with similar award-driven positioning.
• Michaelis Boyd: London architecture and interior design studio of comparable size specializing in high-end residential, hotels, and restaurants. Direct competitor for the same HNW and boutique hospitality client base.
• SHH Architects: London-based architecture and interiors practice with a similar mix of luxury residential, hotel, and workplace projects. Comparable in scale and premium positioning across the same target customer segments.
• Studio Indigo: London-based architecture and interior design firm with strong luxury residential and heritage portfolio. Comparable scope across residential refurbishment, new-build homes, and hospitality projects.
• Tonkin Liu: Award-winning London architecture practice of similar scale, recognized for residential, cultural, and public realm work. Competes for the same RIBA-recognized residential and cultural commissions.
• Caruso St John: London-based architecture and interior design practice with a comparable reputation for high-quality residential, cultural, and retail projects. Similar award pedigree and design-led positioning.

Broad incumbents

• Allies and Morrison: Larger, established London architecture practice with broader portfolio across residential, commercial, cultural, and masterplanning. Competes for heritage and cultural commissions but at significantly greater scale and breadth.
• AHMM (Allford Hall Monaghan Morris): Major London architecture practice with extensive workplace, residential, and cultural portfolio. Competes for the same developer-driven workplace and residential commissions but with substantially greater resources.
• Fletcher Priest Architects: Established London architecture practice with deeper commercial, workplace, and cultural portfolio. Overlaps with Cousins & Cousins on heritage, workplace, and residential commissions but operates at larger scale.

Emerging players

• Ekkist: London-based consultancy specializing in human health and wellbeing in buildings. Already partnered with Cousins & Cousins on the Davidson Prize, reflecting an adjacent rather than competing capability around wellness-focused design.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/in/ben-cousins-94952916
• Instagraminstagram.com/cousinsandcousins

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Cousins and Cousins