Atelier In Situ

What Atelier In Situ does

Atelier In Situ is a privately-held French architectural practice founded in 2016 and headquartered in Clamart (92140), operating as a SARL unipersonnelle under French law. The firm is a two-person partnership between Charlotte Wrigglesworth, a British architect registered with the Ordre des Architectes and trained at Newcastle-upon-Tyne University with prior experience at FSP Architects & Planners, AART-Farah Architectes, and Agence Jean-Paul Viguier & Associés, and Juliette Liberman, a French interior architect and furniture designer trained at École Boulle and ENSAD Paris, formerly an ébéniste and theatre set builder. Together they deliver architecture, interior architecture, and custom furniture design across the full project lifecycle.

The firm serves two primary customer segments: residential property owners in the Clamart/Île-de-France region seeking extensions, elevations, renovations, and interior restructuring, and operators of ERP (Établissement Recevant du Public) buildings such as healthcare clinics and commercial spaces requiring regulatory compliance. Service delivery runs from initial free consultation through programme development, design studies (sketches, AVP), permit applications, contractor tendering (DCE), weekly site meetings, and final project acceptance. Additional service lines include Thermal Renovation consulting tied to the MaPrimeRénov program and a Design & Fitting offering for custom libraries, staircases, and reception desks. Juliette Liberman also designed the Banc Charivari, a furniture piece edited by Fermob.

The business model is professional services revenue generated on a project basis, with direct client acquisition through the firm's website (atelierinsitu.fr) and personal contact channels (phone, email). Initial consultations are provided free of charge, after which project-specific quotes follow site visits and programme discussions. There is no external funding, no parent company, no subsidiaries, and no public listing; the firm is wholly founder-owned and operated. Geographic service delivery is concentrated in Île-de-France, with at least one project executed in Occitanie.

Name

Atelier In Situ

Legal name

Atelier In Situ SARL unipersonnelle

Website

https://atelierinsitu.fr

Company type

Private

Founded year

2016

Operating status

Operating

Short description

Atelier In Situ is a two-partner architectural and interior design firm based in Clamart, France, delivering residential extensions, renovations, and ERP/public-access building projects across the full project lifecycle for property owners and healthcare operators.

Ownership category

akta.pro rank

Product category

Architectural Services

NAICS

Interior Design Services (54141), Interior Design Services (541410)

akta.pro primary industry

Residential Interior Fit-Out (Multi-Family & High-End) (IMAFANAE)

akta.pro secondary industry

Joinery, Millwork & Casework Installation (Cabinetry, Built-Ins) (IMAFANAJ)

Keywords

• Architectural design services
• Interior architecture
• Building renovation
• Construction supervision
• Custom furniture design

Headquarters

HQ city

Clamart

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Others

Revenue model

1. Architectural and Interior Design Services: Professional services revenue generated through comprehensive architectural services spanning the full project lifecycle: initial consultation, programme development, design studies (2D plans, 3D visualizations), permit applications, contractor tendering documentation, weekly construction site meetings, and project acceptance. Services can be engaged for the complete project or individual stages.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Atelier In Situ is a two-architect partnership that delivers full-lifecycle architectural and interior architecture services, from preliminary programme and design studies through building permit applications, contractor tendering, weekly construction site supervision, and final project acceptance. Offerings can be engaged as a complete project package or as individual stages, with an initial consultation provided free of charge. The firm also provides thermal renovation consulting tied to the MaPrimeRénov program and custom furniture and interior fitting design, including a co-branded bench (Banc Charivari) edited by Fermob.

Product overview

Atelier In Situ is a dual-partner architecture and interior design firm based in Clamart, France, offering comprehensive services from conception to construction supervision. The firm's core services include Architecture Services and Interior Architecture Services, supported by Construction Site Supervision. Their specialized offerings encompass Thermal Renovation Services (in partnership with MaPrimeRénov), Design & Fitting (custom furniture and interior fittings), Residence Projects (extensions, elevations, restructuring), ERP Projects (public establishments), and Renovation & Rehabilitation. Additionally, the firm has produced a proprietary furniture product, the Banc Charivari, edited by Fermob. The company operates as a binome of two architects with complementary profiles: Charlotte Wrigglesworth (architecture) and Juliette Liberman (interior architecture and furniture design).

Differentiator

Problem solved

Functional benefit

Products and services

• Architecture Services Full-service architectural design from conception through construction supervision, including preliminary meetings, sketch development, AVP studies, and building permit preparation, intended for homeowners and operators of public-access buildings.
• Interior Architecture Services Interior architecture and design services covering space planning, color and material selection, and custom furniture specifications for residential and commercial interiors.
• Construction Site Supervision On-site construction management including contractor calls for tender, weekly site meetings with client participation, and final project acceptance.
• Thermal Renovation Services Energy renovation consulting in partnership with the MaPrimeRénov program, including thermal insulation, window replacement, and heat pump installation for residential clients.
• Design et Agencement (Design and Fitting) Custom furniture design and interior fitting services including libraries, seating, windows and partitions, reception desks, and staircases for residential and commercial interiors.
• Residence Projects (Extensions, Elevations, Restructuring) Residential projects including house extensions, roof elevations, and complete home restructuring for individual homeowners in the Clamart region.
• ERP (Établissement Recevant du Public) Projects Public reception establishment projects including orthodontic offices, medical cabinets, restaurants, and collective housing with commercial spaces, covering feasibility studies, partitioning, all trades coordination, and site supervision.
• Renovation and Rehabilitation Complete renovation and rehabilitation services for residential properties including structural modifications, facade work, and interior reorganization.
• Banc Charivari A bench designed by co-founder Juliette Liberman and edited by Fermob, produced and sold as a co-branded furniture product.

Named customers3 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

Partnerships

One partnership is on record.

• FermobnotableOEM/ Whitelabel/ Licensing PartnerJuliette Liberman, co-founder of Atelier In Situ, is a furniture designer and creator of the Banc Charivari, which is edited/produced by Fermob. This represents a personal design collaboration outside the firm's core architectural services.

Scale indicators2 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Pierre Yovanovitch: Paris-based interior architect and furniture designer serving high-end residential and hospitality clients. Comparable in combining architecture, interior design, and custom furniture production with a founder-led brand-driven model.
• Maison Sarah Lavoine: Paris-based interior architecture and design firm led by Sarah Lavoine, offering residential and commercial interior design with proprietary furniture collections. Highly comparable boutique profile with similar scale, target clientele, and integrated furniture-design angle to Atelier In Situ.
• Jean-Louis Deniot: Paris-based interior designer with international residential and hospitality projects. Directly comparable as a founder-led boutique interior architecture practice with crossover into furniture and product design.
• Reda Amalou: Paris- and London-based architect and interior designer offering high-end residential and commercial projects. Comparable as a small founder-led studio combining architecture, interior design, and bespoke furniture.
• Liaigre: French interior architecture and furniture brand with showrooms worldwide. Comparable for the integrated interior design + custom furniture model, though operating at significantly larger scale and with proprietary manufacturing.
• Studio KO: Paris-based architecture practice working on residential, cultural, and commercial projects. Comparable as a similarly-sized French architecture and interior design studio with founder-led creative positioning.
• Atelier Jean-Philippe Nuel: French architecture and interior design studio specializing in hospitality, residential, and urban mixed-use projects. Comparable as a similarly-sized French firm delivering architecture and interior design across residential and public-reception (ERP) building types.

Broad incumbents

• Architecture-Studio: Major French architecture firm with international portfolio across cultural, residential, and urban projects. A broader incumbent competing for the same French institutional and residential clients as Atelier In Situ, but at much larger scale.
• Christian de Portzamparc: Pritzker Prize-winning Parisian architecture firm. Operates in the same French architecture market and on some of the same building typologies (residential, mixed-use, public), but at vastly larger scale and project complexity.
• Wilmotte & Associés: Established Parisian architecture practice with a much broader portfolio (cultural, residential, commercial, urban). Operates in the same French architecture and interior design market but at significantly larger scale and project size.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/in/charlotte-wrigglesworth-568b4b122

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Atelier In Situ