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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint742,805 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil EngineeringSt. GallenWilli Bau AG
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Verified· 3 sources

Willi Bau AG

Summary

About the company

Willi Bau AG is a construction company offering building and civil engineering works, demolition and system waterproofing. The company combines demolition, excavation and builder services and delivers projects for residential, commercial and public clients, including core drilling and concrete repair.

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Offering

Products & services

Industry:Civil Engineering
✓ Offered8
Civil engineering
Excavation, excavation support and dewatering; new construction and renovation of sewer systems and service lines; forecourts, parking lots, composite paving areas, paving works and minor road construction works.
Building construction
Additions and conversions of single-family and multi-family houses, new construction of single-family houses, construction of multi-family houses and residential developments, retaining walls, staircases and ground slabs.
Demolition work
Strip-outs of buildings, demolition of entire houses and buildings, dismantling of structural components, integrated hazardous substance remediation, as well as reinstatement and renaturalisation measures.
Commercial construction
Construction of business premises, company headquarters and production halls, renovations of representative building components, renewal of installations, adaptation works, as well as maintenance and facility services.
Public sector construction
New construction of business premises and workshops, schools and municipal buildings, transformer stations, pipeline construction, engineering structures, roundabout and bridge construction, water engineering works, and on-site interventions in case of pipe bursts.
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Reviews

Aggregated rating

Aggregated rating
4.9
of 5

Aggregated from 15 reviews across all connected sources

Sources
GGoogle4.915
★TrustpilotSoon
PProvenExpertSoon

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Location

Burgstrasse 63
9000 St. Gallen
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:30
Tue
07:00 - 12:00, 13:00 - 17:30
Wed
07:00 - 12:00, 13:00 - 17:30
Thu
07:00 - 12:00, 13:00 - 17:30
Fri
07:00 - 12:00, 13:00 - 16:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Branch
UID
CHE-319.710.163
Founded
2018 · 8 years
Last commercial register change
March 16, 2018
Employees
51 to 100

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