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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint742,806 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsWindischHartmann Keller AG
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Verified· 3 sources

Hartmann Keller AG

Summary

About the company

Hartmann Keller AG is an architectural firm that provides project development, project and execution planning, and construction management. The firm works on new buildings, conversions and renovations and can take over external projects for continuation or supervision.

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Offering

Products & services

Industry:Architecture FirmsGeneral Contractors
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Architectural services
Project development, project and executive planning including site management for new builds, conversions, renovations and projects with challenging conditions.
Assumption and continuation of third-party projects
Taking over third-party projects for continuation or support, including planning and construction support.
Reviews

Aggregated rating

Aggregated rating
3.5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle3.52
★TrustpilotSoon
PProvenExpertSoon

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Location

Dohlenzelgstrasse 39
5210 Windisch
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:00
Tue
08:00 - 12:00, 13:00 - 17:00
Wed
08:00 - 12:00, 13:00 - 17:00
Thu
08:00 - 12:00, 13:00 - 17:00
Fri
08:00 - 12:00, 13:00 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-221.212.193
Founded
2018 · 8 years
Last commercial register change
July 2, 2024
Employees
11 to 20

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