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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,194 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureTimber Construction & CarpentryAlt St. JohannHolzbau Ostschweiz GmbH
Holzbau Ostschweiz GmbH Logo
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Holzbau Ostschweiz GmbH

Summary

About the company

The core activity of Holzbau Ostschweiz GmbH is the planning and execution of timber construction projects, particularly in the areas of: carpentry, terrace construction, terrace roofing, carport construction, pergola construction, garden house construction, garden seating area construction, dry construction, wooden façades, roofing work, roof renovation, roof inspection, skylight installation, renovation, and conversion. The company offers individual solutions for these projects and also creates 3D models for visualizing the planned work.

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Offering

Products & services

Industry:Timber Construction & Carpentry
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Decking
WPC, thermally modified ash and larch decking including substructure, slope, drainage, edge details and renovation of existing terrace surfaces.
Timber terrace roof
Timber terrace roofs for patios and seating areas, including installation, replacement on existing buildings, roof covering, junctions and drainage.
Carport / shelter
Custom timber carports and vehicle shelters with site measurement, structural design, permit support, prefabrication, installation, foundations and drainage.
Timber garage
Timber-frame garages, freestanding or attached to the house, with foundations, doors, roof, insulation, windows and storage space.
Small jobs
Small timber work on houses, gardens and existing buildings, including repairs, modifications, small extensions and interior or exterior fittings.
Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 4 reviews across all connected sources

Sources
GGoogle54
★TrustpilotSoon
PProvenExpertSoon

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Location

Hauptstrasse 23
9656 Alt St. Johann
Opening hours
Mon
08:00 - 19:00
Tue
08:00 - 19:00
Wed
08:00 - 19:00
Thu
08:00 - 19:00
Fri
08:00 - 19:00
Sat
08:00 - 19:00
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-301.825.393
Founded
2022 · 4 years
Last commercial register change
October 13, 2025
Employees
1 to 10

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