Atelier quatre cent un

What Atelier quatre cent un does

Atelier quatre cent un is a privately-held Swiss architecture firm headquartered in Yverdon-les-Bains, Canton Vaud, with a branch office in Fribourg opened in February 2024. The firm traces its lineage to Brunner & Carrard, founded in 1986, and was taken over by its current three associates — Luc Staudenmann, Lucien Petitpierre, and Simon Clément — in 2018; it was rebranded under its present identity in 2022. The practice employs seven staff (three partners and four collaborators including architects, building draftsmen, and an apprentice) and offers full-service architectural design, project management, and construction direction (direction des travaux) for residential, commercial, public-sector, industrial, and healthcare buildings.

The firm's core technical differentiation is its Minergie Specialist Partner certification (held since March 2020), which enables it to design and certify energy-efficient buildings under the Swiss Minergie standard; representative projects include the 154-unit Les Jardins de Clendy development for Helvetia Compagnie Suisse d'Assurance SA. Its work spans construction methods including wood frame, concrete (prémurs), and metal structures. The firm also holds SIA membership (since 2019) and operates a Minergie specialist partnership for sustainable building certification.

The firm generates revenue through project-based professional services fees negotiated per project, typically as a percentage of construction budget, billed over multi-year contract durations. Its go-to-market combines public-sector competitive bids (concours public SIA) for institutional clients — including communes (Yverdon-les-Bains, Ependes, Essertines), healthcare foundations (Fondation Saphir, Fondation Les Châteaux), and educational authorities — with direct client relationships and referrals for private residential and commercial developers (Les Résidences Haldimand, Procimmo, Helvetia). Marketing relies on a portfolio-driven website, Facebook presence, and long-standing regional networks in the Nord Vaudois area.

Name

Atelier quatre cent un

Legal name

Atelier quatre cent un

Website

https://atelier401.ch

Company type

Private

Founded year

2018

Operating status

Operating

Headcount range

1–10 employees

Short description

Atelier quatre cent un is a 7-person Swiss architecture firm in Yverdon-les-Bains (with a Fribourg branch since 2024) that designs residential, public, healthcare, and industrial buildings as a Minergie-certified specialist, serving communes, foundations, and real estate developers across Canton Vaud and Fribourg.

Ownership category

akta.pro rank

Headquarters

HQ city

Yverdon-les-Bains

HQ country

Switzerland

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Architectural Design Services: Project-based professional fees for architectural design services, including feasibility studies, project design, direction des travaux (construction supervision), and project management for residential, commercial, and public buildings.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

Atelier quatre cent un is a Swiss architecture firm that provides full-service architectural design, including project conception, design development, project management, and construction supervision (direction des travaux). The firm delivers residential, commercial, public, and industrial building projects, with specialization in Minergie-certified energy-efficient and sustainable construction. Services span feasibility studies through to construction completion, working closely with maîtres d'ouvrage (clients) on each project.

Product overview

Atelier quatre cent un is a Swiss architecture firm offering comprehensive architectural design services. The firm operates as a unified practice providing architectural design, project management, and construction direction for diverse building typologies including residential complexes, public institutions, commercial facilities, and industrial structures. As a Minergie specialist partner, they integrate energy-efficient and sustainable design principles across their portfolio. Their services span from initial project conception through construction completion, with particular emphasis on quality aesthetics, durability, ecology, and local craftsmanship.

Differentiator

Problem solved

Functional benefit

Products and services

• Architectural Design Services Full-service architectural design for residential, commercial, public, and industrial buildings, including project conception, design development, and construction direction. Targeted at municipalities, real estate developers, foundations, and private clients in Switzerland.
• Minergie-Certified Building Design Energy-efficient building design services as a certified Minergie specialist partner, focusing on sustainable construction and ecological standards. Targeted at clients seeking certified sustainable buildings across residential, commercial, and public sectors.
• Project Management and Construction Direction Construction project oversight and direction services, including coordination with contractors, artisans, and stakeholders throughout the building process. Targeted at clients requiring end-to-end project delivery oversight.

Quantifiable outcome

• 36 years of continuous operation and client relationships
• +1 more outcomes

Named customers9 records

Segments3 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Four partnerships are on record, tiered core, minor and major.

• MinergiecoreStrategic or Co-development PartnerAtelier quatre cent un holds official 'Partenaire Spécialiste Minergie' certification since March 2020, enabling the firm to design and certify buildings meeting Minergie energy efficiency standards. This partnership is central to the firm's value proposition of sustainable architecture.
• Société Suisse des Ingénieurs et Architectes (SIA)coreOthersOfficial SIA member since January 2019, demonstrating professional credentials and adherence to Swiss architectural standards.
• Groupement d'Entreprises Yverdonnoises (GEYSA)minorOthersMember of the Yverdon-les-Bains Business Grouping, a local business association for companies in the Yverdon region.
• GEY SAmajorImplementation/ SI/ Consulting PartnerGeneral contractor (Entreprise Générale) partner on public projects including Salle de gym Pestalozzi. Collaborative relationship on construction delivery.

Scale indicators3 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• HHF Architects: Basel-based Swiss architecture practice working on residential, public, and cultural commissions. Comparable in being a Swiss atelier with a strong portfolio of institutional and residential work.
• Burkhalter Sumi Architekten: Zurich-based Swiss architecture firm with a comparable portfolio of residential developments, public buildings, and competition-based commissions. Similar in operating as a partner-led atelier.
• Atelier 5: Bern-based Swiss architecture firm with similar partner-driven atelier structure and portfolio spanning residential and public commissions. Closely comparable in firm size and operating model.
• Bob Gysin + Partner BGP: Zurich-based Swiss architecture firm with similar focus on residential, public, and educational buildings. Comparable as a mid-sized Swiss atelier competing for similar municipal and developer clients.
• Diener & Diener Architekten: Basel-based architecture firm with comparable scope in residential, public, and cultural projects. Both firms operate as Swiss ateliers focused on quality-driven design with SIA credentials.
• Bauart Architekten: Bern and Lausanne-based Swiss architecture firm offering similar residential, public, and commercial design services. Strong overlap in typologies (multi-family housing, schools, healthcare facilities) and Swiss public-sector engagement model.

Broad incumbents

• Burckhardt+Partner: One of Switzerland's largest architecture firms with offices in Basel, Zurich, Bern, and Lausanne. Comparable as a Swiss architectural services provider across residential, public, and healthcare typologies, though operating at much greater scale and broader geographic footprint than Atelier 401.
• Itten+Brechbühl: Swiss architecture and general planning firm headquartered in Bern with regional offices. Comparable in offering architectural design for public, residential, and commercial buildings, but larger in headcount and project portfolio than Atelier 401.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/atelier-d-architecture-brunner-carrard-sa-sia

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 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 quatre cent un