by Planta and Associates Architects

What by Planta and Associates Architects does

de Planta et Associés Architectes SA is a Geneva-based architecture firm, organized as a Swiss Société Anonyme, that traces its lineage to the 1910 founding of the Roulet & Addor real estate agency and assumed its current name in 2017 after a partnership transition. The firm is owned and directed by four partners — François de Planta, Johann Leresche, Stéphane Chambat, and Christophe Barbaux — supported by approximately 25 additional architects, technicians, and administrative staff for a total headcount of roughly 30 professionals. Its practice is structured around four core service lines: new construction, building transformation, renovation (including heritage restoration), and interior architecture, delivered under an integrated BIM methodology that the firm cites as a quality and reliability differentiator.

The firm serves a mixed client base spanning public authorities (municipal, cantonal, and federal entities for schools, hospitals, sports, and cultural facilities), private enterprises in luxury watchmaking, healthcare, education, and fragrance/flavors (notably Richemont/Jaeger-LeCoultre, Caran d'Ache, Firmenich, Hôpitaux Universitaires de Genève, EPFL, and Université de Genève), and private individuals for residential projects. Project mandates are secured primarily through architectural competitions and direct client relationships within Geneva and Western Switzerland (Cantons of Vaud and Fribourg, broader Romandie). The firm has partnered with international practices such as Zaha Hadid Architects on the GREEN HEART pediatric hospital project and pursues sustainability credentials including Minergie and the 2025 Swiss Solar Prize.

The revenue model is professional services: architecture fees tied to project scope, complexity, and services rendered, billed under standard industry pricing without public disclosure. The firm invests in technology via BIM processes and a 3D printer for model-making, and competes for mandates through an active competition program and long-term enterprise relationships rather than intermediaries or resellers. Marketing is conducted through a project portfolio website, LinkedIn, and Instagram, supplemented by earned media in regional architecture publications.

Name

by Planta and Associates Architects

Legal name

de Planta et Associés Architectes SA

Website

https://deplanta-architectes.ch

Company type

Private

Founded year

1910

Operating status

Operating

Headcount range

11–50 employees

Short description

de Planta et Associés Architectes SA is a Geneva-based architecture firm (Société Anonyme) with ~30 professionals, delivering new construction, transformation, renovation, and interior architecture under an integrated BIM methodology for public authorities, private enterprises (luxury, healthcare, education, fragrance), and individuals across Western Switzerland.

Ownership category

akta.pro rank

Product category

Architectural Services

NAICS

Architectural Services (54131), Interior Design Services (54141)

SIC

Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

akta.pro secondary industry

Renovation, Remodeling & Tenant Improvements (General Contracting) (IMAFAAAE)

Keywords

• Architectural design services
• Building renovation
• Heritage restoration
• Interior architecture
• BIM methodology

Headquarters

HQ city

Carouge

HQ country

Switzerland

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 architecture firm providing design, project management, and execution services for construction, renovation, transformation, and interior architecture projects. Revenue generated through professional service fees for architectural mandates.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

de Planta et Associés Architectes SA is a Geneva-based architecture firm offering comprehensive architectural services covering new construction (Execution/Réalisation), building transformation, renovation (including heritage restoration), and interior architecture. The firm manages the full project lifecycle from initial sketch to key handover, integrating BIM methodology throughout to ensure quality, reliability, and durability. Projects span residential, commercial, healthcare, education, watchmaking/luxury, and public infrastructure sectors in Western Switzerland.

Product overview

de Planta et Associés Architectes SA is a Geneva-based architecture firm offering comprehensive architectural services as a unified practice. The firm operates as a single integrated architecture service provider with four core offerings: new construction (Réalisation), building transformation (Transformation), renovation (Rénovation), and interior architecture (Intérieur). The firm distinguishes itself through its specialization in vertical extension of residential buildings, transformation of buildings for industry, healthcare, education, and watchmaking sectors, and heritage building restoration. The practice employs BIM (Building Information Modelling) processes throughout all projects, and actively participates in architectural competitions. Notable projects include the À La Blonde housing development in Vandœuvres, renovation of the Couvent des Minimes Hotel & Spa L'Occitane, construction of L'OCCITANE Spa, Building B11 at Hôpital de La Tour, and various heritage transformations including Crans-sur-Céligny Castle.

Differentiator

Problem solved

Functional benefit

Products and services

• Architectural Services - New Construction (Execution / Réalisation)

Quantifiable outcome

• Featured in major architectural publications and academic texts on Geneva architecture
• +2 more outcomes

Named customers6 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• Zaha Hadid ArchitectsminorStrategic or Co-development PartnerCollaboration on GREEN HEART project for new inpatient and outpatient buildings at the Children's Hospital in Geneva. Project involved architectural competition submitted November 2021. Partnership brought international expertise to pediatric healthcare facility design.

Scale indicators2 records

Recent moves7 records

Expansion highlights5 records

Regional players

• 3XN A/S: Danish international architecture firm known for cultural and public-sector projects across Europe. Comparable in offering integrated architecture, sustainability and interior services — a relevant peer for cross-border competition entries in Switzerland.
• BIG (Bjarke Ingels Group): International architecture firm with active European projects. Comparable as a multidisciplinary practice combining architecture, sustainability and interior design — relevant for the kinds of international competition entries de Planta is increasingly bidding.
• gmp · von Gerkan, Marg and Partners: German-headquartered international architecture firm with active projects across Europe including Switzerland. Comparable as a full-service practice delivering large-scale cultural, healthcare and transport buildings — relevant peer for competition bids.

Direct peers

• Mario Botta Architetti: Ticino-based Swiss architecture firm led by an internationally recognized principal. Comparable as a Swiss mid-sized practice combining heritage renovation, cultural buildings and corporate commissions within the same Romandie/Italian-Swiss catchment.
• Atelier 5 Architekten: Bern-based Swiss architecture collective with a long heritage of housing and urban projects. Comparable as a Swiss architect-owned practice with strong public-sector and residential credentials, competing for similar Swiss mandates.
• Itten+Brechbühl AG: Swiss architecture firm headquartered in Bern with full-service offerings across new construction, transformation and interior architecture. Comparable in size and Swiss multi-region model, and a direct competitor for public-sector and corporate mandates in Switzerland.
• Diener & Diener Architekten: Basel-based Swiss architecture firm with comparable heritage (founded 1942) and a focus on cultural, residential and urban projects. Directly comparable as a mid-sized Swiss practice competing for similar institutional and private commissions.

Others

• Zaha Hadid Architects: Global architecture firm with whom de Planta partnered on the Children's Hospital Geneva GREEN HEART competition. Listed as an ecosystem/collaboration peer rather than direct competitor given the firm-wide co-bidding relationship demonstrated in 2021.

Broad incumbents

• Burckhardt+Partner AG: One of Switzerland's largest heritage architecture firms (founded 1954) with offices in Basel, Zurich, Bern and Lausanne. A broader incumbent offering overlapping architectural services plus engineering — competing with de Planta for large institutional and corporate mandates.
• Herzog & de Meuron: Globally renowned Basel-based architecture firm. Comparable as a Swiss-headquartered practice with heritage roots and a track record of cultural, healthcare and corporate commissions — though at a much larger scale and international footprint.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/de-planta-associes-architectes
• Instagraminstagram.com/deplanta.architectes

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 by Planta and Associates Architects