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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,194 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceSt. UrsenFahrni UmBau GmbH
Fahrni UmBau GmbH Logo
Verified· 3 sources

Fahrni UmBau GmbH

Summary

About the company

The core activity of Gasser Bohrungen GmbH is the execution of drilling, milling and masonry work, in particular core drilling, as well as the rental of machines for these activities.

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Offering

Products & services

Industry:Building MaintenanceSite Preparation
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Masonry Work
✓ Offered9
Core drilling
Core drilling through concrete, masonry and reinforced concrete, precise, low-vibration and to exact dimensions; openings for pipes, conduits, cables and ventilation systems up to 600 mm in diameter.
Milling and wall sawing
Milling and wall sawing through concrete, reinforced concrete and masonry for new openings such as passages, windows and stair openings, as well as openings in walls and ceilings up to 42 cm wall thickness.
Conversions
Conversions in indoor and outdoor areas, including adjustments to living spaces, removing tiles, removing or installing walls, and works related to changes to heating systems.
Structural reinforcement
Structural reinforcement during conversions, for example by installing steel beams or bonding CFRP laminates, to secure the static structural system of buildings.
Excavator work
Excavator work for utility line construction, digging, stripping topsoil (humus) and building natural stone walls.
Masonry work
Masonry work such as bricklaying, installing lintels, concreting the floor, concreting the wall, trowel finishing with a wing float and various retaining walls.
Concrete demolition
Controlled, professional concrete demolition for conversion and construction projects.
Renovations
Renovations and conversions in indoor or outdoor areas to enhance owner-occupied homes.
Rental of machines
Rental of excavators, tarpaulin trailers, tip trailers, cutting saws, pointed hammers, vibrating plates, leveling lasers, earth augers, dirty water pumps and fan heaters, partly with or without operator.
Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 7 reviews across all connected sources

Sources
GGoogle57
★TrustpilotSoon
PProvenExpertSoon

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Location

Stöck 5
1717 St. Ursen
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:00
Tue
07:00 - 12:00, 13:00 - 17:00
Wed
07:00 - 12:00, 13:00 - 17:00
Thu
07:00 - 12:00, 13:00 - 17:00
Fri
07:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-113.724.102
Founded
2007 · 19 years
Last commercial register change
August 13, 2026
Employees
1 to 10

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