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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,714 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionDiepoldsauHermann Alt
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Hermann Alt

Summary

About the company

The company's core activity is the planning and execution of construction projects in the field of renovation and restoration of listed buildings, in particular churches, as well as the new construction and renovation of daycare centers, community and town halls, and agricultural buildings.

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Offering

Products & services

Industry:Building Construction
✓ Offered5
Listed Building & Church Renovation
Renovation and restoration of listed properties and churches, including restoration of historic room finishes, technical equipment and lighting, as well as execution of service phases 3–9 according to HOAI.
Childcare Centre New-Build & Renovation
New-build, renovation and refurbishment of childcare centres, including conversion works, extensions, roof and façade refurbishment, fire protection, as well as outdoor facilities and HOAI service phases.
Public Sector Buildings (Municipal & Civic Buildings)
Design and construction management for municipal and civic buildings, including new-build, refurbishment, change of use, as well as public-sector projects with HOAI service phases.
Construction in the Agricultural Sector
Construction in the agricultural sector, in particular relocation of agricultural holdings, new-build of cellar operations, farm tavern service, living quarters and machine sheds.
Renovation & Reconstruction of Historic Walls
Renovation and reconstruction of historic walls, including stone retaining walls and restoration of Bergfried towers, with planning and construction management.
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Location

Hintere Kirchstrasse 1
9444 Diepoldsau

At a glance

Legal form
Sole proprietorship
UID
CHE-105.813.442
Founded
1975 · 51 years
Last commercial register change
March 11, 1993
Employees
1 to 10

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