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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,272 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionSt. Margrethen SgKoller Bau und Immobilien GmbH
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Verified· 3 sources

Koller Bau und Immobilien GmbH

Summary

About the company

Koller Bau und Immobilien GmbH is a construction company carrying out building projects, including new construction, conversions and renovation work. It provides builder services, planning and construction-management support and customer masonry work for residential, commercial and infrastructure buildings.

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Products & services

Industry:Building Construction
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New construction
New construction for single-family homes, multi-family homes, villas, commercial and industrial buildings, office buildings, public infrastructure projects, garages, farm outbuildings and swimming pools; on request with planning, building permit submission and construction management.
Conversion and renovation
Conversions and renovations of existing buildings, for example conservatory extensions, garage forecourts, kitchens and bathrooms as well as attic conversions; depending on the project with architect, building permit submission and coordination of tradespeople.
Client masonry works
Smaller masonry work such as garden steps, repairing masonry, plastering walls, plinths, openings for doors and windows, garage extensions, lintels, cosmetic concrete repairs, swimming pools and retaining walls.
Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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Location

Grasbäustrasse 8
9430 St. Margrethen Sg

At a glance

Legal form
Limited Liability Company
UID
CHE-110.037.809
Founded
2003 · 23 years
Last commercial register change
April 17, 2025
Employees
1 to 10

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