General Contractors in the
Canton of Schaffhausen

68 companies in General Contractors based in the Canton of Schaffhausen — name and year of registration from the commercial register.

Companies

50 of 68 companies

Ernst Keller AG Dörflingen Logo

Ernst Keller AG Dörflingen

Since 1989 · 21–50 empl.5.0(5)

Ernst Keller AG Dörflingen is named on the wolfKeller website as the predecessor of wolfKeller GmbH; the company provides structural building (hochbau), civil engineering and crane services as well as renovations and conversions.

General ContractorsBuilding constructionCivil engineering and crane worksRenovation and conversion
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #1
wolfKeller GmbH Logo

wolfKeller GmbH

Since 2012 · 21–50 empl.5.0(5)

wolfKeller GmbH is a construction company offering building construction, civil works, crane services, and renovation and conversion projects. Services include retaining walls and single-family houses up to multi-storey office buildings with parking garages, excavation and utility installation, and load lifting with tower and truck cranes.

Building ConstructionBuilding constructionCivil engineering and crane workRenovation and conversion
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #2
Wepfer Bauprojekte GmbH Logo

Wepfer Bauprojekte GmbH

Since 2024 · 1–10 empl.4.9(31)

The core activity of Wepfer Bauprojekte GmbH is the execution of construction projects, conversions and renovations, including planning, consulting, implementation and management. The company offers comprehensive solutions for new buildings, facade work, interior design and other construction-related services.

Construction & Project ManagementGeneral contractorConversions & renovationMasonry and structural work
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #3
Walo Bertschinger AG Logo

Walo Bertschinger AG

Since 1957 · 51–100 empl.

Walo Bertschinger AG is a construction company operating across construction markets as a general contractor, offering services such as road and civil engineering, rail construction, water engineering, building construction, concrete repair, flooring systems and material processing.

Civil EngineeringRoad and civil engineeringWater engineeringLandfill construction & contaminated site remediation
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #4
Müller + Partner AG Architekten + Planer Logo

Müller + Partner AG Architekten + Planer

Since 2007 · 11–20 empl.5.0(3)

The core activity of Müller+Partner Architekten is the provision of architectural services, particularly in the planning and realization of construction projects. The company offers services such as design planning, building permit planning, tendering and execution planning, and supports clients in realizing their individual architectural wishes.

Architecture FirmsArchitectural and planning servicesProject planningBuilding permit planning
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #5
WEHA Immobilien & Generalunternehmung GmbH Logo

WEHA Immobilien & Generalunternehmung GmbH

Since 2015 · 1–10 empl.

WEHA Immobilien & Generalunternehmung GmbH operates as a general contractor and provides the full range of construction services required to realize building projects. Its services include land search and project development, architecture, and construction/project management, performed together with partner firms.

General ContractorsLand search / project developmentTotal contractorGeneral contractor
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #6
Höhener Baugeschäft + Immobilien AG Logo

Höhener Baugeschäft + Immobilien AG

Since 2018 · 1–10 empl.

Höhener Baugeschäft + Immobilien AG is a construction company acting as a general contractor for building and civil engineering works, and for renovations and conversions. Services include planning and construction of single- and multi-family homes (including turnkey delivery) and specialised works such as scaffolding, core drilling, plastering and painting, skip (mulde) services, and pool and pond construction.

Building MaintenanceBuilding constructionCivil engineeringSpecialised works
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #7
Höhener Bau AG Logo

Höhener Bau AG

Since 2018 · 1–10 empl.

Höhener Bau AG provides general contracting and specialist building and civil-engineering services, including new construction, conversions and renovations. Services also include scaffolding, core drilling, plastering and painting, container rental, landscaping and pool and pond construction.

Building MaintenanceBuilding constructionCivil engineeringSpecialist works
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #8
Osak Immobilien & Haustechnik AG Logo

Osak Immobilien & Haustechnik AG

Since 2018 · 1–10 empl.

Osak Immobilien & Haustechnik AG specialises in heating, sanitary and ventilation systems as well as the purchase, sale and rental of real estate. The company provides building-services planning, installation, renovation and maintenance, and supports property transactions.

General ContractorsProperty brokerageBuilding services planningHeating system installation and renovation
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #9
Genu Partner AG Logo

Genu Partner AG

Since 2008 · 11–20 empl.4.1(18)

The company provides comprehensive solutions for new and renovation construction projects, including project development, construction management, construction trust, planning and realization of residential buildings, commercial and office complexes, as well as public buildings. It combines owner-focused thinking with a comprehensive range of services, from investment idea to planning and realization to complete marketing.

General ContractorsComprehensive solutions for new-build and conversionsGeneral planning and total service providerConstruction management and client representation
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #10
M&T Real Vision GmbH Logo

M&T Real Vision GmbH

Since 2018 · 1–10 empl.

M&T Real Vision GmbH, a general contractor based in Einsiedeln, specializes in project and construction management, interior design and concept development. The core activities include: project and construction management for smooth processes, budget-compliant implementation and quality-assured projects from start to finish; interior design and planning, including concept planning, renovation and expansion of rooms; concept development and design for innovative and functional spaces; and general execution of construction projects of all kinds, including store renovations, office expansions and interior construction. The company offers a comprehensive range of services, from planning to realization of construction projects.

Building ConstructionGeneral contractorConstruction managementInterior fit-out
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #11
Ulmer Ledergerber Architekten AG Logo

Ulmer Ledergerber Architekten AG

Since 2009 · 1–10 empl.5.0(6)

The core activity of Ulmer Ledergerber Architekten AG is the provision of architectural services.

Architecture FirmsArchitectural services
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #12
Ankoris Bau GmbH Logo

Ankoris Bau GmbH

Since 2019 · 21–50 empl.4.8(6)

The core activity of Ankoris Bau GmbH is the provision of construction services, particularly in the fields of high-rise construction, civil engineering, renovation, conversion and property maintenance. The company offers all services of the main construction industry, including surface treatment, customer masonry work, gutting, renovation and conversion of buildings. It assumes full responsibility for construction projects, from planning and coordination to turnkey realization.

Building ConstructionBuilding constructionCivil engineeringRefurbishment and renovations
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #13
Winkel Bauplan GmbH Logo

Winkel Bauplan GmbH

Since 2022 · 1–10 empl.5.0(7)

Winkel Bauplan GmbH is a landscape architecture and outdoor space planning firm. The company designs, develops, and supports projects for public, private, and shared outdoor spaces, including gardens, schoolyards, playgrounds, neighbourhoods, and public areas.

Construction & Project ManagementLandscape designOutdoor landscapingSite supervision and construction management
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #14
Müller Heuscher GmbH Logo

Müller Heuscher GmbH

Since 2005 · 1–10 empl.4.0(4)

The core activity of Müller. Heuscher. Architektur is the planning and realization of construction projects, particularly in the field of architecture, with a focus on residential buildings, commercial buildings and industrial buildings. The company also offers services in the field of real estate and has its own team of architects and employees.

General ContractorsArchitectural PlanningEnergy Consulting and Energy ConceptsReal Estate Development and Site Advisory
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #15
Linearis AG Logo

Linearis AG

Since 1989 · 1–10 empl.5.0(2)

Linearis AG is an architecture and general contracting company specializing in the planning, consulting and implementation of construction projects. The core activities include the creation of residential buildings, commercial buildings and historic buildings, as well as renovation and conversion projects. The company offers a comprehensive range of services, from consulting to planning and implementation of construction projects.

General ContractorsConsultingPlanningConstruction Management
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #16
Antares Plan AG Logo

Antares Plan AG

Since 2021 · 1–10 empl.

Antares Plan AG is an owner-managed planning and project development firm offering land acquisition, concept development, project planning, construction realization and quality assurance services.

General ContractorsProject developmentProject planningImplementation
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #17
s+p Schmid Partner AG Logo

s+p Schmid Partner AG

Since 1973 · 1–10 empl.3.2(9)

s+p Schmid Partner AG is an architecture and construction consultancy offering planning, project development and realization services for renovations, conversions and new buildings. Services include feasibility studies, permit procedures, tendering, construction supervision, cost control and support across all project phases.

Construction & Project ManagementDevelopment and deliveryConstruction consulting
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #18
AGOB AG Logo

AGOB AG

Since 1970 · 1–10 empl.5.0(1)

The core activity of AGOB AG is the planning and realization of residential and commercial buildings, in particular single-family homes, multi-family homes and residential complexes, as well as the provision of services in the area of "serviced living" in cooperation with bonacasa.

General ContractorsGeneral contractingReal estate development and project developmentProperty sales
ranQ Trust Score 3.8 out of 5.0, rated High, Rank #19
LeanCONS ag Logo

LeanCONS ag

Since 2016 · 1–10 empl.5.0(1)

The core activity of LeanCONSag is the provision of services in the construction industry, particularly in construction management, consulting and training. Specifically, this includes: Construction management and project management, Consulting on construction projects, Training and further education for construction professionals, Management of subcontractor liability, Tenders and billings, Lean construction and process optimization. The company offers its services to both private and public building owners, planners, general contractors, construction companies and craft businesses.

Architecture FirmsLean ConstructionConstruction / Project ManagementTendering and Bills of Quantities
ranQ Trust Score 3.8 out of 5.0, rated High, Rank #20
Kummer Generalbau AG Logo

Kummer Generalbau AG

Since 1998 · 1–10 empl.4.0(1)

Kummer Generalbau AG is an architectural firm that provides consulting, planning and construction services for new builds and alterations. The company prepares project, design, execution and detail plans, as well as feasibility studies for building projects.

General ContractorsSingle-family homesMulti-family homesReal estate developments
ranQ Trust Score 3.8 out of 5.0, rated High, Rank #21
HQ Architektur GmbH Logo

HQ Architektur GmbH

Since 2018 · 1–10 empl.5.0(1)

The core activity of HQ Architektur GmbH is the provision of architectural services.

Architecture FirmsArchitectural services
ranQ Trust Score 3.8 out of 5.0, rated High, Rank #22
ImmoDux GmbH Logo

ImmoDux GmbH

Since 2025 · 1–10 empl.

ImmoDux GmbH is a real estate company focused on the valuation and brokerage of residential and investment properties. The company supports clients with sales, purchases, market value analyses, and property valuations.

Architecture FirmsReal estate salesProperty valuationOff-market marketing
ranQ Trust Score 3.7 out of 5.0, rated Solid, Rank #23
Oettli-Haus AG Logo

Oettli-Haus AG

Since 1976 · 1–10 empl.

Oettli-Haus AG is a general contractor in the real estate sector that plans, constructs and markets primarily residential buildings. The company also provides services for property sales and rentals.

General ContractorsReal estate brokerageRental of real estatePlanning and construction of residential buildings
No score yet
Quadraplan AG Logo

Quadraplan AG

Since 2009 · 11–20 empl.

The core activity of Quadraplan AG is the planning and realization of high-rise buildings as a general contractor, including contract negotiation, planning and complete implementation of construction projects.

General ContractorsGeneral contractor
No score yet
LIA Real Estate AG Logo

LIA Real Estate AG

Since 2018 · 1–10 empl.

LIA Real Estate AG is a real estate company providing property development, design and execution planning, and construction management services. Its offerings include total and general contracting, building consultancy for new builds and renovations, project development, and property marketing and sales.

Construction & Project ManagementReal estate developmentConstruction managementTotal and general contracting
No score yet
Inhabita GmbH Logo

Inhabita GmbH

Since 2022 · 1–10 empl.

The core activity of Inhabita GmbH is architecture, particularly the planning, design and implementation of construction projects, such as the transformation of spaces and places, taking into account creative and calculative aspects.

General ContractorsArchitecture
No score yet
Casa e Mobile AG Logo

Casa e Mobile AG

Since 2005 · 1–10 empl.

General Contractors
No score yet
WE Baumanagement GmbH Logo

WE Baumanagement GmbH

Since 2022 · 1–10 empl.

WE Baumanagement GmbH is a company in the field of construction management. The website lists contact details and the team, but does not provide further information about services or projects.

Architecture Firms
No score yet
GA

Gnädinger Architektur AG

Since 1977 · 1–10 empl.

Architecture Firms
No score yet
TB

Trefinag Bau- und Beteiligungs AG

Since 1983 · 1–10 empl.

General Contractors
No score yet
HH

HFG Hausbau AG

Since 1997 · 1–10 empl.

Building Construction
No score yet
LA

Lenfer AG

Since 2001 · 1–10 empl.

General Contractors
No score yet
BF

Bruno Ferrari Fassadenbau GmbH

Since 2002 · 1–10 empl.

General Contractors
No score yet
AT

ASCORE Technologies AG

Since 2002 · 1–10 empl.

General Contractors
No score yet
SB

STEUER BAU (SCHWEIZ) GmbH

Since 2004 · 1–10 empl.

General Contractors
No score yet
SI

SBI INTERNATIONAL HOLDINGS AG

Since 2004 · 1–10 empl.

General Contractors
No score yet
SG

Schmidl GmbH

Since 2007 · 1–10 empl.

General Contractors
No score yet
ME

Müller Erwin Architektur AG

Since 2007 · 1–10 empl.

Architecture Firms
No score yet
BG

bau-consult gmbh

Since 2008 · 1–10 empl.

General Contractors
No score yet
SB

Schlatter Bauconsulting

Since 2009 · 1–10 empl.

General Contractors
No score yet
VA

Velenia AG

Since 2009 · 1–10 empl.

Technical Consulting & Engineering
No score yet
SB

SMG bau gmbh

Since 2010 · 1–10 empl.

Architecture Firms
No score yet
OG

ORE GmbH

Since 2010 · 1–10 empl.

General Contractors
No score yet
AA

Atrium AG

Since 2010 · 1–10 empl.

General Contractors
No score yet
BA

BDW AG für Projektentwicklung

Since 2012 · 1–10 empl.

General Contractors
No score yet
HG

Hölzig GmbH Schaffhausen

Since 2013 · 1–10 empl.

General Contractors
No score yet
GI

Güetli Immobilien AG

Since 2014 · 1–10 empl.

General Contractors
No score yet
EG

ERPA GmbH

Since 2015 · 1–10 empl.

Construction & Project Management
No score yet
MI

MT Immobau AG

Since 2016 · 1–10 empl.

Construction & Project Management
No score yet

General Contractors in the Canton of Schaffhausen

68General ContractorsCommercial register (Zefix) · as of October 10, 2026
2015Median year of registrationCommercial register (Zefix) · as of October 10, 2026
68in the Canton of SchaffhausenCommercial register (Zefix) · as of October 10, 2026
9,216in SwitzerlandCommercial register (Zefix) · as of October 10, 2026
Locations

General Contractors in the region

Point size by number of companies per place.

Source: commercial register (Zefix) · as of October 10, 2026