ranQ
ranQ
ranQ
DirectoryIndustriesKnowledgeComparisonsSoon
Sign inCheck visibility
ranQHSG Startup LabelRecognised by the
HSG Startup Label

The first Swiss company directory, built to boost AI visibility.

Product
  • Pricing
  • Directory
  • Industries
Company
  • About
  • Contact
  • Legal
© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint742,806 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionDiepoldsauHermann Alt
Hermann Alt Logo
Verified· 2 sources

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.

AI-generated
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.
LeadhubOutbound Leads by COHAGA

Looking for direct email addresses and phone numbers?

Leadhub delivers verified contact details and decision-makers from over 750,000 Swiss companies — management, procurement, marketing, HR.

Discover Leadhub

Knowledge

No knowledge articles yet

Once Hermann Alt has claimed this profile, we'll publish editorial articles and case studies here together.

Get started
Comparisons

Hermann Alt in comparison

Soon

Industry comparisons are coming soon

We're preparing industry comparisons that rank Hermann Alt by reviews, experience and specialisations.

Is this your company?

Claim the company profile of Hermann Alt to make its contact details visible. With a plan we additionally create and publish industry comparisons, articles and much more.

Secure profile

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

Similar companies

AB
Ackermann Bau AG
Mels
BI
Brändle Immobilien GmbH
St. Gallen
RG
Renex GmbH
Gebertingen
WB
Wohnlich Bau AG Goldach
Goldach
JG
JoVa GmbH
Lichtensteig
OB
OBERHOLZER Bauleistungen AG
Neuhaus Sg
BB
Bruderer Bau AG
St. Gallen
DE
Daniel Eugster
Au Sg