Architecture Firms in
Widnau
21 companies in Architecture Firms based in Widnau — name and year of registration from the commercial register. The list below shows them all.
All 21 companies in Widnau
S + L Architektur AG
Since 2013 · 21–50 empl.4.7(14)
S + L Architektur AG provides architectural and planning services along with project development, construction management and site supervision. The firm acts as a general or total contractor, offers land and property brokerage and complementary services such as site assessments, energy concepts and regulatory clarifications.

CRISTUZZI Immobilien-Treuhand AG
Since 1983 · 11–20 empl.3.2(9)
CRISTUZZI Immobilien-Treuhand AG ist ein Dienstleister im Immobilienbereich, der Verkauf, Bewirtschaftung, Erstvermietung, Beratung und Bewertungen für Wohn- und Gewerbeliegenschaften anbietet. Ihr vertrauensvoller Partner für den gesamten Immobilienlebenszyklus. Von der ersten Idee bis zur langfristigen Bewirtschaftung stehen wir an Ihrer Seite. Unsere Dienstleistungen decken alle Aspekte der Immobilienentwicklung, -bewertung, -vermarktung, -bewirtschaftung und Erstvermietung ab.
N2A AG
Since 2014 · 11–20 empl.5.0(6)
The core activity of N2A AG is the provision of architectural services, including project development, urban planning, architecture, construction management and interior design. The company focuses on creating living and residential spaces for various needs and offers its services both nationally and internationally.
atelier loher gmbh
Since 2015 · 1–10 empl.
atelier loher gmbh is an architectural practice offering design and project planning services for residential and commercial buildings as well as architectural photography. The practice focuses on sustainable and ecological topics and participates in competitions, feasibility studies, publications and exhibitions.
Hautle + Partner AG
Since 1992 · 1–10 empl.
The core activity of Spirig Partner AG is the provision of architectural services.
Spirig Partner AG
Since 1989 · 11–20 empl.4.8(5)
Spirig Partner AG is an independent architectural firm. The firm handles planning and realization of new-builds and renovations, providing project planning, construction management and participation in competitions for residential, commercial, leisure and public building projects, including outdoor/landscape spaces.
P. Frei Immobilien GmbH
Since 2001 · 1–10 empl.
The core activity of P. Frei Immobilien GmbH encompasses general contracting for new constructions, planning and realization of living spaces tailored to individual needs, the sale and rental of existing, planned and under-construction properties, as well as the creation of turnkey new buildings at a fixed price.
NEO Architektur AG
Since 2011 · 21–50 empl.5.0(3)
The core activity of the company "neo architektur ag" is the planning and realization of architectural projects, including design, project management, building technology and construction, with the aim of creating living spaces for people that blend into their surroundings while bringing uniqueness.
arche-tec.ch GmbH
Since 2001 · 1–10 empl.4.0(6)
The core activity of Spallo Kolb encompasses architecture and art.
Heule Architekturbüro GmbH
Since 2002 · 1–10 empl.4.4(7)
Heule Architekturbüro GmbH provides architectural design and planning services for residential and industrial buildings, including single-family and multi-family houses, extensions, renovations, site developments, industrial buildings, and service stations. The practice supports projects through preliminary design, building permit submissions, construction documentation, construction management and turnkey handover.
Carnier Gstöhl GmbH
Since 2016 · 1–10 empl.5.0(3)
The company carnier gstöhl GmbH is an architectural firm specializing in the planning and consulting of construction projects. The core activities include: Architecture: Design and planning of new buildings, conversions, renovations, and restorations; Construction consulting: Consulting for builders and investors in the realization of construction projects; Village and urban development: Planning and consulting for the development of local images and urban areas; Garden consulting and planning: Consulting and planning of gardens and environmental design; Building and damage assessment: Assessment of buildings and damages for the building insurance of the canton of St. Gallen (GVA). The company emphasizes the integration of architecture into the existing environment, the use of ecological materials, and the consideration of the needs of the builders.
Valley Architekten AG
Since 2024 · 1–10 empl.
Valley Architekten AG is an architectural firm focused on the design of plus-energy residential buildings as well as office and educational projects. The practice develops timber buildings using the Openly construction system, often acts as general planner, and emphasizes standardization and prefabrication to increase efficiency and predictability.
Spirig Group AG
Since 2025 · 1–10 empl.
Spirig Group AG is an independent architecture firm in the St. Gallen Rhine Valley. The company plans and delivers projects in housing, commercial buildings, competitions and landscape/open-space design, as well as various single-family and multi-family homes.
Hutter & Partner GmbH
Since 2001 · 1–10 empl.
Hutter & Partner GmbH combines architectural and general-contractor services, offering both turnkey house types and custom-designed homes. Clients can choose between individual billing or a fixed lump-sum price, and an optional price guarantee is available.
rwb Baumanagement Renato Wüst GmbH
Since 2016 · 1–10 empl.
rwb Baumanagement Renato Wüst GmbH is a company in the field of construction management. The website indicates that the web presence is currently under construction.
Blum Baumanagement GmbH
Since 2017 · 1–10 empl.
Blum Baumanagement GmbH provides services in construction management and site supervision. The website names Ing. Chris Blum as the contact person and states that the website is still under construction.
Längle Architektur
Since 2023 · 1–10 empl.
The core activity of Längle Architektur is the planning and implementation of architectural and lighting concepts for various spaces, with a focus on combining aesthetics and functionality. This includes creating feasibility studies, initial designs, detailed plans, obtaining permits, and executing architectural projects, as well as providing consulting services on architectural matters and lighting design.
H. Köppel Architektur und Bauleitungs AG
Since 1990 · 1–10 empl.
Romdesign HUTTER
Since 2000 · 1–10 empl.
Architekt Bickel
Since 2015 · 1–10 empl.
Any Trade GmbH
Since 2026 · 1–10 empl.
Architecture Firms in Widnau
Architecture Firms in the region
Point size by number of companies per place.
Source: commercial register (Zefix) · as of October 11, 2026
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