Civil works in the
Canton of Appenzell Outer Rhodes

45 companies in Civil works based in the Canton of Appenzell Outer Rhodes — name and year of registration from the commercial register. The list below shows them all.

Companies

All 45 companies in the Canton of Appenzell Outer Rhodes

Alder Bau AG Logo

Alder Bau AG

Since 1965 · 1–10 empl.4.7(63)

Alder Bau AG provides construction services such as demolition, hazardous-material removal, earthworks and civil engineering; it also offers transport services (heavy and material transport, container services) and waste disposal and recycling via a disposal yard.

Civil worksCivil engineeringEarthworksDemolition
ranQ Trust Score 4.3 out of 5.0, rated Very high, Rank #1
Koch Strassen- & Tiefbau AG Gais Logo

Koch Strassen- & Tiefbau AG Gais

Since 1984 · 101–500 empl.

Koch Strassen- & Tiefbau AG Gais provides road and civil engineering services and operates aggregate and concrete production with quarry and recycling facilities. The company also offers transports, skip (mulden) services, demolition, landfill/repository management and delivery of construction materials including concrete pumping.

Civil worksRoad and Civil EngineeringDemolitionRailway Track Construction
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #2
Ernst Künzler AG Hoch- und Tiefbau Walzenhausen Logo

Ernst Künzler AG Hoch- und Tiefbau Walzenhausen

Since 1989 · 1–10 empl.

Ernst Künzler AG Hoch- und Tiefbau Walzenhausen is a construction company. Its services include building construction, civil engineering, alterations, masonry, renovation, skip hire and crane services.

Building contractorConstruction contractorConversionRenovation
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #3
KIBAG Bauleistungen AG Logo

KIBAG Bauleistungen AG

Since 2002 · 11–20 empl.

KIBAG Bauleistungen AG carries out road construction, civil engineering and demolition works. The branch provides contact details and local project services for these activities.

Civil worksRoad constructionCivil engineeringDismantling
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #4
Cellere Bau AG Logo

Cellere Bau AG

Since 2010 · 51–100 empl.

Cellere Bau AG is a construction services provider specialising in road and civil engineering, structural repairs and general building work. Its activities include constructing and renewing roads and utility infrastructure, repairing structures and carrying out building renovations, conversions and extensions.

Civil worksRoad and civil engineeringRehabilitationGeneral contractor
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #5
Klarotec GmbH Logo

Klarotec GmbH

Since 2011 · 1–10 empl.

Klarotec GmbH provides building and property-related trade services, with a focus on the remediation of hazardous materials. The company removes and disposes of materials containing PCBs and PAHs in accordance with SUVA guidelines.

Civil worksAsbestos remediationAsbestos inspectionConsulting
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #6
Mazenauer Bau AG Logo

Mazenauer Bau AG

Since 2013 · 1–10 empl.

Mazenauer Bau AG works in road construction and civil engineering, providing construction management, site supervision and planning. Its services also include preparing tenders, cost estimates, measurement checks, surveying and renovation consulting.

Civil worksConstruction managementConstruction monitoring and project settlement
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #7
Cellere Bau AG Logo

Cellere Bau AG

Since 2015 · 51–100 empl.

Cellere Bau AG is a construction company active in road and civil engineering, building rehabilitation and general building works. Its services include roads and utility lines, the repair of concrete structures, building conversions and renovations.

Civil worksRoad and civil engineeringRehabilitationBuilding contractor works
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #8
Bruno Brunner GmbH Logo

Bruno Brunner GmbH

Since 2017 · 1–10 empl.

Bruno Brunner GmbH provides services in drilling consultancy, well construction and geothermal energy. Its work includes planning and supervising drilling, constructing and renovating wells and spring-water intakes, pipeline installation, water and utility-line locating, and maintenance.

Civil worksWell construction / pipe constructionGeothermal energy / technical site managementWater intakes / spring intakes
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #9
Cellere Bau AG Logo

Cellere Bau AG

Since 2017 · 51–100 empl.

Cellere Bau AG is a construction services provider specialising in road and civil engineering, structural repair and building construction. Its work includes building and renewing roads and utility infrastructure, repairing and strengthening structures, and carrying out renovations and building and façade refurbishments.

Civil worksRoad and civil engineeringRepairs and rehabilitationGeneral contractor
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #10
Rusch Bau AG Logo

Rusch Bau AG

Since 2018 · 51–100 empl.

Civil works
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #11
Waldburger Montagen GmbH Logo

Waldburger Montagen GmbH

Since 2018 · 1–10 empl.

Waldburger Montagen GmbH provides services in piping and plant construction. Its activities include stainless-steel and steel pipework, plants for food processing, heating and steam technology and water supply, metalwork, maintenance and repairs.

Civil worksPipework constructionPlant engineeringMetal fabrication
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #12
Albert Mohn Baugeschäft Logo

Albert Mohn Baugeschäft

Since 2012 · 1–10 empl.5.0(6)

Albert Mohn Baugeschäft is a construction and masonry business carrying out building and civil engineering work. Its services include masonry, renovations and new builds, exposed concrete, natural stone and landscaping work, as well as core drilling and garden construction.

Building contractorBuilding and civil engineering workMasonry work and customer masonry workConcrete work and exposed concrete
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #13
Andreas Graf AG Logo

Andreas Graf AG

Since 2009 · 1–10 empl.5.0(6)

Andreas Graf AG is a construction company working in building and civil engineering. Its services include concrete and utility-line construction, landscaping, paving, core drilling, work around homes and snow clearance.

Building contractorBuilding constructionCivil engineeringExterior works
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #14
Preisig AG, Bauunternehmung Logo

Preisig AG, Bauunternehmung

Since 2002 · 21–50 empl.4.2(6)

Preisig AG, Bauunternehmung is a construction company specialising in road construction and civil engineering. It advises clients, plans and develops construction projects, and carries them out, including excavation, utility and concrete works, and landscaping.

Civil worksCivil engineering
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #15
BRUNNER Baggerarbeiten GmbH Logo

BRUNNER Baggerarbeiten GmbH

Since 2020 · 1–10 empl.

BRUNNER Baggerarbeiten GmbH carries out civil engineering and demolition work, including excavation, sewerage and utility-line construction. Its services also include landscaping, natural stone walls and the mechanised installation of concrete roads.

Civil worksCivil engineeringDemolitionOutdoor areas
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #16
Hörler Tiefbau AG Logo

Hörler Tiefbau AG

Since 2008 · 11–20 empl.5.0(5)

Hörler Tiefbau AG carries out road and civil engineering work, including excavation, excavation support, road construction, sewer systems, water engineering and demolition. The company produces concrete, arranges concrete and gravel transport, and operates a landfill for clean excavated material.

Civil worksCivil engineering and road construction worksConcrete products and concrete transportLandfill for clean excavated material
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #17
A. Schläpfer GmbH Logo

A. Schläpfer GmbH

Since 2012 · 1–10 empl.5.0(1)

A. Schläpfer GmbH carries out civil engineering, excavation, demolition and landscaping work, as well as trenchless utility installation using a ground rocket. Its services also include transport, forestry work, firewood and winter maintenance.

Civil worksCivil engineeringTransportForestry work
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #18
Bagger Forrer AG Logo

Bagger Forrer AG

Since 2003 · 1–10 empl.3.8(5)

Bagger Forrer AG operates an excavation business and carries out earthworks and landscaping work. Its services include spring water installations, drainage, slope stabilisation, sewerage and utility-line construction, site transport and demolition.

Civil worksCivil engineering and site preparationExcavationDrainage and spring capture
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #19
Strässle GmbH Logo

Strässle GmbH

Since 2012 · 1–10 empl.5.0(2)

Strässle GmbH works in road construction and civil engineering. Its services include roadworks, civil engineering, site and landscaping works, demolition, and winter maintenance.

Civil worksRoad constructionCivil engineeringDemolition
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #20
Glunk Natursteinpflästerungen GmbH Logo

Glunk Natursteinpflästerungen GmbH

Since 2023 · 1–10 empl.5.0(8)

Glunk Natursteinpflästerungen GmbH specializes in natural stone paving, including arc, row, scale and irregular patterns. It also installs kerbs and edge restraints for road construction.

Civil worksNatural stone pavingRoad edge restraints
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #21
Franz Manser AG Logo

Franz Manser AG

Since 2002 · 11–20 empl.5.0(1)

Franz Manser AG is a construction company working in road construction, civil engineering and outdoor landscaping. Its services include asphalt works, sewer systems, earthworks, garden design, railway track works, demolition, waste disposal, skip hire, crane work and transport.

Civil worksCivil engineeringRoad constructionGarden design
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #22
Graf Bau Rehetobel AG Logo

Graf Bau Rehetobel AG

Since 2012 · 1–10 empl.5.0(2)

Graf Bau Rehetobel AG is a construction company providing building and civil engineering services. Its work includes renovations, demolition, earthworks and excavation, utility construction, retaining walls and sewer systems, as well as transport, crane services, customer masonry and snow clearing.

Building contractorBuilding constructionCivil engineeringRenovation and extensions
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #23
Schefer Hoch- und Tiefbau AG Logo

Schefer Hoch- und Tiefbau AG

Since 2006 · 1–10 empl.5.0(1)

Schefer Hoch- und Tiefbau AG is a building and civil engineering contractor. Its work includes excavation, demolition, new construction and renovations, road construction, sewer systems, paving and natural stone walls.

Building contractorConsultingExcavationDemolition and dismantling
ranQ Trust Score 3.8 out of 5.0, rated High, Rank #24
Preisig Tiefbau - Forstbetrieb AG Logo

Preisig Tiefbau - Forstbetrieb AG

Since 2022 · 1–10 empl.4.3(3)

Preisig Tiefbau - Forstbetrieb AG carries out civil engineering and forestry work. Its services include excavation and trenching, slope and stream bank protection, core drilling, tree felling, timber extraction and snow clearance.

Civil worksCivil engineeringDismantlingForestry work
ranQ Trust Score 3.7 out of 5.0, rated Solid, Rank #25
OPMOVA AG Logo

OPMOVA AG

Since 2026 · 1–10 empl.

OPMOVA AG provides construction management, site supervision and operational construction services for building and infrastructure projects. Its work includes planning and coordination of utility, road and civil engineering projects, demolition and dismantling, project management, and consulting on strategy, organisation and digitalisation.

Management consultantConstruction Management & Site SupervisionOperational Construction Services & DemolitionProject & Rollout Management
ranQ Trust Score 3.5 out of 5.0, rated Solid, Rank #26
Eugster Strassen- & Tiefbau GmbH Logo

Eugster Strassen- & Tiefbau GmbH

Since 2025 · 1–10 empl.

Eugster Strassen- & Tiefbau GmbH operates in road construction and civil engineering.

Civil worksRoad constructionCivil engineering
No score yet
AA

AEMISEGGER AG Bauunternehmung

Since 1993 · 1–10 empl.

Civil works
No score yet
KB

KIBAG Bauleistungen AG

Since 2002 · 1–10 empl.

Civil works
No score yet
RE

Rusch Erdbewegungen GmbH

Since 2002 · 1–10 empl.

Civil works
No score yet
WA

Wenk AG Rehetobel

Since 2005 · 1–10 empl.

Civil works
No score yet
FT

Fuster Tiefbau AG

Since 2006 · 1–10 empl.

Civil works
No score yet
BM

Bruno Mohn Bauunternehmung GmbH

Since 2006 · 1–10 empl.

Building contractor
No score yet
DS

D&A Schalungen GmbH

Since 2007 · 1–10 empl.

Building contractor
No score yet
HK

Hans Keller, Garten-Bau-Unterhalt, BTL Baudienstleistung

Since 2008 · 1–10 empl.

Civil works
No score yet
EW

E. Weber AG

Since 2008 · 1–10 empl.

Civil works
No score yet
RR

René Rechsteiner GmbH

Since 2011 · 1–10 empl.

Civil works
No score yet
ET

Eggenberger Tiefbau GmbH

Since 2013 · 1–10 empl.

Civil works
No score yet
DS

Dietsche Strassenbau AG

Since 2014 · 1–10 empl.

Civil works
No score yet
SM

Späni Maurer + Baggerarbeiten GmbH

Since 2016 · 1–10 empl.

Civil works
No score yet
KT

Koller Tiefbau GmbH

Since 2016 · 1–10 empl.

Civil works
No score yet
MZ

M. Zenuni Bau GmbH

Since 2022 · 1–10 empl.

Building contractor
No score yet
SB

Schrepfer Bau AG

Since 2023 · 1–10 empl.

Building contractor
No score yet
HH

HU Heim GmbH

Since 2024 · 1–10 empl.

Civil works
No score yet
RH

R&M Harmonie GmbH

Since 2024 · 1–10 empl.

Event agency
No score yet

Civil works in the Canton of Appenzell Outer Rhodes

45Civil worksCommercial register (Zefix) · as of November 7, 2026
2012Median year of registrationCommercial register (Zefix) · as of November 7, 2026
45in the Canton of Appenzell Outer RhodesCommercial register (Zefix) · as of November 7, 2026
3,407in SwitzerlandCommercial register (Zefix) · as of November 7, 2026
Locations

Civil works in the region

Point size by number of companies per place.

Source: commercial register (Zefix) · as of November 7, 2026