Studio Westmaas

What Studio Westmaas does

Studio Westmaas is a privately held, founder-led interior architecture and design practice founded in 2016 by Kay Westmaas and headquartered in Richmond, London. The studio delivers an integrated suite of residential services spanning interior design (bespoke design schemes and styling), interior architecture (structural reconfiguration including kitchen and bathroom redesign, room alterations, staircases, and bespoke joinery), and FF&E procurement (furniture, antiques, art, and custom pieces), all governed by a RIBA-based design process that takes projects from concept to completion. Its aesthetic is differentiated by the founder's Barbadian-English heritage, blending Caribbean colour palettes with refined English sensibilities, and is supported by consistent earned-media coverage in House & Garden, Homes & Gardens, Tat London, and Living Etc.

The studio serves a mid-market residential clientele concentrated in London and the Home Counties, with occasional international engagements including a documented project in The Hamptons, New York. Customers engage the studio directly via phone, email, website contact form, and Instagram, with no third-party distribution or marketplace listings. Pricing is opaque and negotiated on a per-project basis; there is no publicly disclosed fee schedule, no SaaS or productised offering, and no technology platform underpinning delivery.

Studio Westmaas is a small practice (1-10 employees), founder-owned with no institutional investment, parent entity, subsidiaries, or partnership agreements evidenced. Revenue is not publicly disclosed and the operating model is project-based professional services. Distribution is exclusively direct-to-client, and the studio's principal growth mechanism to date has been press-led brand building rather than paid acquisition, hiring, or geographic build-out.

Name

Studio Westmaas

Legal name

Studio Westmaas

Website

https://studiowestmaas.com

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

1–10 employees

Short description

Studio Westmaas is a London-based interior architecture and design practice founded in 2016 by Kay Westmaas, delivering bespoke residential design, structural reconfiguration, and FF&E procurement services to mid-market homeowners in the UK and selectively internationally.

Ownership category

akta.pro rank

Product category

Interior Design Services

NAICS

Interior Design Services (54141)

SIC

Services-Facilities Support Management Services (8744)

akta.pro primary industry

Whole-Home Interior Renovation (Non-Structural) (HSAPAEAC)

akta.pro secondary industries

Kitchen Permitting, Design & Project Management (HSAPAAAK), Trim, Baseboards, Crown Molding & Finish Carpentry (HSAPAFAD), Residential Interior Fit-Out (Multi-Family & High-End) (IMAFANAE)

Keywords

• Interior design services
• Residential interior architecture
• FF&E procurement
• Home refurbishment design
• Bespoke joinery design

Headquarters

HQ city

Richmond

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Supply Chain

Revenue model

1. Interior Design Services: Studio Westmaas generates revenue through professional interior design services, including interior architecture (structural reconfiguration, redesign of bathrooms and kitchens, room alterations, new staircases and joinery), interior decoration, and FF&E procurement (furniture, fittings, equipment, antiques, art, and unusual pieces). Services are project-based and delivered from concept to completion.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

Studio Westmaas is a London-based interior architecture and design studio that provides residential clients with bespoke interior design, interior architecture (structural reconfiguration, kitchen and bathroom redesign, room alterations, new staircases, bespoke joinery), and FF&E procurement (sourcing furniture, antiques, art, and one-of-a-kind pieces). Services are delivered project-by-project from concept to completion, following the RIBA Interior Design framework, and target homeowners in London, the Home Counties, and select international locations.

Product overview

Studio Westmaas is an interior architecture and decoration studio offering an integrated suite of residential design services. The core offering consists of Interior Design (bespoke design schemes and styling), Interior Architecture (structural reconfiguration including kitchens, bathrooms, joinery), and FF&E (procurement of furniture, antiques, art, and custom pieces). The studio also provides a defined Design Process based on RIBA Interior Design services. These services work together to take projects from concept through to completion, covering full-scale spatial refurbishments and bespoke joinery design alongside decorative styling and furniture sourcing.

Differentiator

Problem solved

Functional benefit

Products and services

• Interior Design Bespoke interior design service creating timeless, balanced spaces that are both functional and beautiful. The team develops design schemes that bring client aspirations to life, drawing on a distinctive palette influenced by Barbadian and English heritage. Targeted at homeowners undertaking residential projects of all sizes.
• Interior Architecture Internal structural reconfiguration of residential properties, including redesign of bathrooms and kitchens, room alterations, new staircases, and bespoke joinery design. Delivered in collaboration with structural engineers and contractors. Targeted at homeowners undertaking renovations or spatial refurbishments.
• FF&E (Furniture, Fittings & Equipment) Procurement and specification service covering furniture, fittings, and equipment. Specialises in sourcing one-of-a-kind antiques, commissioning art, and discovering unusual pieces, with a focus on sustainable materials and craftsmanship. Targeted at residential clients seeking distinctive furnishing and decorative pieces.

Quantifiable outcome

• Clients have reported achieving higher selling prices for their apartments due to the interior design quality
• +1 more outcomes

Named customers9 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators3 records

Recent moves1 record

Expansion highlights4 records

Emerging players

• Heather Hilliard Design: US-based residential interior designer with a similar full-service architecture + decoration + procurement model, serving HNW clients on the West Coast — comparable in service mix, differentiated by US geography.
• Anna Lovas Design: Hamptons-based residential interior designer known for coastal/luxury residential work — comparable international residential focus to Studio Westmaas's Hamptons projects.

Direct peers

• Beata Heuman Interior Design: London-based, founder-led residential interior design studio with a similarly distinctive, press-recognised aesthetic and FF&E focus. Directly comparable in scale, business model, and target HNW client base.
• Tamsin Johnson Design: London/Australia-based interior designer known for residential work with a layered, eclectic aesthetic — directly comparable in founder-led structure, FF&E emphasis, and international client reach.
• Katharine Pooley: London-based residential and hospitality interior design studio of comparable size with international project delivery and a similarly strong editorial profile in luxury publications.
• Kitesgrove: London interior design practice offering residential and commercial projects with an integrated design + procurement model, comparable in scale and prestige positioning to Studio Westmaas.
• Rose Uniacke: London-based interior designer with a portfolio spanning residential interiors, antiques, and furniture — a closely comparable integrated design + FF&E model serving high-net-worth London and international clients.
• Salvesen Graham: Small London residential interior design partnership focused on heritage and period properties, with comparable project scope, client base, and bespoke FF&E procurement.

Broad incumbents

• Nina Campbell: Long-established London-based interior design brand with a broader portfolio across residential, hospitality, and product — comparable market positioning at the HNW end, but operating at significantly greater scale and brand maturity.
• Kelly Hoppen Interiors: Large, internationally recognised London interior design firm spanning residential, commercial, hospitality, and product — comparable market segment but operating at substantially greater scale and geographic reach.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat2 records

Key risks5 records

Key highlights5 records

Customer concentration

• Instagraminstagram.com/studio.westmaas/?hl=en
• LinkedInlinkedin.com/company/studio-westmaas

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Studio Westmaas