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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint742,807 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionSargansJohn & Sommer Bau AG
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Verified· 3 sources

John & Sommer Bau AG

Summary

About the company

The core activity of John + Sommer Bau AG is construction, including the execution of construction projects, demolition work and customer work in the field of construction.

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Offering

Products & services

Industry:Building ConstructionBuilding MaintenanceCivil Engineering
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Site Preparation
✓ Offered8
Building construction
Residential, industrial and commercial buildings as well as agricultural buildings; new builds and construction work in building construction.
Civil engineering / Excavation work
Utility line and site development works, road construction projects, squares and surroundings as well as excavation work with our own fleet.
Renovation and conversion works
Extensions and alterations, attic conversions, living space extensions, lift installations as well as demolition and renovation of building fabric.
Dismantling and demolition works
Wall openings and dismantling of entire buildings as well as demolition works with processing of the material at the transshipment yard.
Certified recycling
Processing of demolition material into certified secondary building materials, standard-compliant recycling materials at the recycling yard.
Reviews

Aggregated rating

Aggregated rating
4.5
of 5

Aggregated from 13 reviews across all connected sources

Sources
GGoogle4.513
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Knowledge

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Location

St. Gallerstrasse 21
7320 Sargans
Opening hours
Mon
07:30 - 11:30, 13:30 - 17:00
Tue
07:30 - 11:30, 13:30 - 17:00
Wed
07:30 - 11:30, 13:30 - 17:00
Thu
07:30 - 11:30, 13:30 - 17:00
Fri
07:30 - 11:30, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-495.322.792
Founded
2022 · 4 years
Last commercial register change
July 20, 2026
Employees
11 to 20

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