Construction & Architecture

Schwestermann Küchen AG 

Gamsen · Since 2006

Schwestermann Küchen AG is a kitchen specialist that designs, manufactures and installs custom kitchens. Services include showroom and on-site consultation, 3D planning, carpentry production, professional installation and construction management for smaller projects. The company’s showroom features brands such as Poggenpohl and Pronorm and appliances from Siemens, V-Zug and Miele.

Schwob, Sutter, Architekten AG 

Liestal · Since 2003

The core activity of Schwob, Sutter, Architekten AG is the planning and realization of architectural projects, including new buildings, conversions, renovations and designs of residential, educational, cultural and commercial properties, as well as the creation of analyses, feasibility studies and expert opinions in the field of architecture and urban planning.

Sciaroni Carpenteria Sagl 

Torre · Since 2019

The core activity of Sciaroni Carpenteria Sagl is the provision of services in the field of woodworking and construction, particularly: contract work in wood, roofing, construction of chalets and modular houses, renovation of rustici (alpine huts), insulation, facade cladding, installation of floors, stairs, skylights and windows, metalwork, and installation of photovoltaic systems. The company also offers consulting and planning services for these activities and uses exclusively high-quality materials.

S-Clean GmbH 

Hauptwil · Since 2018

S-Clean GmbH provides technical, infrastructural and commercial facility services for commercial, infrastructure and residential properties, including cleaning, property management, garden maintenance, minor repairs, winter services and on‑call support.

sd ingénierie jura sa 

Delémont · Since 1977

sd ingénierie jura sa is a branch of the sd ingénierie group providing engineering services in civil engineering, structural engineering and water management. Its engineers have participated in projects such as the Transjurane (A16).

sdplus conseils sa 

Lausanne · Since 1994

Sebastian-Schmidt-Handwerksdienstleistungen 

Flums · Since 2024

The company 'Sebastian Schmidt Handwerksdienstleistungen' offers a wide range of craft services for private and commercial clients. The core activities include in particular: * Wood processing and assembly (e.g. solid wood terraces, parquet floors, old wood work) * Interior construction and renovations (e.g. kitchen installations, furniture assembly, partition walls, stair railings) * Repair and renovation work (e.g. damage to wooden floors, plaster and paint repairs, renewing silicone joints) * Furniture repairs and adjustments * Maintenance and upkeep of buildings (e.g. adjusting windows and doors, cleaning siphons, replacing thermostatic valves) The company thus offers a comprehensive range of craft services for the design, renovation and maintenance of buildings and living spaces.

Seen Bau AG 

Sattel · Since 2015

The core activity of Seen Bau AG is the planning, construction and marketing of real estate, particularly condominiums and houses, in Switzerland, as well as the execution of renovations and the provision of services related to real estate, including architecture, construction, carpentry, timber construction and roofing.

Sefer Dzaferi Gartenbau 

Oetwil Am See · Since 2008

Sefer Dzaferi Gartenbau offers garden construction, garden maintenance and property caretaking services. Listed services include natural stone work, retaining walls and steps, excavation and leveling, tree and shrub care, cleaning and winter (snow-clearing) services.

senn plan gmbh 

St. Gallen · Since 2010

senn plan gmbh is an architectural practice providing planning and design for new construction and renovation projects; the firm's projects include residential buildings, school facilities and other public buildings.

Setz Architektur AG 

Rupperswil · Since 2018

The core activity of Setz Architektur AG is the planning, realization and maintenance of energy-efficient and healthy buildings, particularly residential houses, with a focus on sustainability and environmental friendliness.

Sieff Holzbau GmbH 

Fahrni B. Thun · Since 2022

The core activity of Sieff Holzbau GmbH is the manufacture and sale of custom-made wood products, particularly kitchens, furniture and cabinets, as well as the provision of related services such as planning, consulting and installation.

Sigrist Letras, Inhaberin Sigrist 

Zurich · Since 2018

SIMEL HOME, simic 

Neuheim · Since 2025

The core activity of Simel Home is the planning, manufacturing, delivery, installation and renovation of various products for interior and exterior construction of houses, including: windows (PVC, aluminum, wood), doors (PVC, aluminum, design and security doors), custom-made furniture, insect screens, shower enclosures, conservatories, and pergolas. The company also offers renovation and refurbishment services for existing houses, including planning and coordination.

Simon Bichsel Holzbau GmbH 

Schmidigen-Mühleweg · Since 2004

The core activity of Simon Bichsel Holzbau GmbH is timber construction, particularly the planning and realization of individual and unique timber construction projects, using traditional craftsmanship and modern technology and machinery.

SINUS AG 

Oensingen · Since 1989

SINUS AG performs noise and vibration measurements and prepares reports, verifications and expert opinions. Services include noise measurement and monitoring with METAS‑approved Class 1 sound level meters, noise remediation, building acoustics, vibration measurements, pavement quality measurements, traffic counts and the preparation of noise cadastres.

SINUS AG Kreuzlingen 

Kreuzlingen · Since 2006

SINUS AG Kreuzlingen conducts noise and vibration measurements and prepares expert reports, compliance documentation and technical assessments. Services include noise measurements and monitoring, noise reports and remediation planning, building acoustics, vibration measurements, pavement noise testing, traffic counts and noise catalogues for authorities, companies and private clients.

SLS Illusion+Construktion GmbH 

Schwerzenbach · Since 2001

The core activity of SLS Illusion & Construktion is the scenographic implementation, spatial design, set construction, theatrical painting, and creation of 3D objects for various applications such as film, photo, and exhibition sets, as well as spatial concepts. The company offers comprehensive services from conception to implementation, including production and execution of specific projects such as restaurant construction, salon construction, shop window and light art installations.

smartwindows AG 

Mörschwil · Since 2023

smartwindows AG is a developer and manufacturer of window and door systems for renovation and new construction. Its product range includes PVC, wood and wood‑aluminum windows, sliding doors, entrance doors and accessories, with production and testing carried out in-house.

smartwindows AG 

Müllheim Dorf · Since 2020

smartwindows AG is a Swiss developer and manufacturer of window and door systems for renovation and new construction. The company offers PVC and wood (including wood–aluminium) windows, sliding doors, entrance doors and related accessories, and carries out product development and in‑house testing.