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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsBaselbau kultur landschaft gmbh
bau kultur landschaft gmbh Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of the company 'bau kultur landschaft' under the management of Florian Rauch in Basel and the Black Forest primarily includes services in the fields of architecture, building research, monument preservation and landscape design. Specifically, the company offers the following services: architectural services according to SIA and HOAI, building research, including dendrochronological and fabric-related dating, monument preservation and monument protection, restoration and repair of historic buildings and cultural assets, damage analysis, damage recording and damage mapping, site design and landscape planning. The company specializes in working on historic buildings, cultural assets and landscapes, particularly in the Black Forest and the Basel region.

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Offering

Products & services

Industry:Architecture Firms
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bau kultur landschaft gmbh

✓ Offered3
Architecture and planning
Feasibility and concept studies, new builds, refurbishment of existing buildings, restoration and heritage building care; planning structures in the landscape, timber construction and repair concepts for historic structures.
Building research
Building age plans, determination of construction phases, dendrochronological and material-structure dating, damage analysis, damage assessment, damage mapping and condition survey accounting for deformation.
Conservation investigations
Investigations into building condition, damage and historic structures as a basis for repair concepts, refurbishments and restorations of existing buildings.
Trust & reputation

ranQ Trust Score of bau kultur landschaft gmbh: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

bau kultur landschaft gmbh has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
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CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
bau kultur landschaft gmbh scores 78.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.89.612%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
bau kultur landschaft gmbh scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).83.322%
bau kultur landschaft gmbh scores 8.0 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.8.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

bau kultur landschaft gmbh reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

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Location

Missionsstrasse 35A
4055 Basel

At a glance

Legal form
Limited Liability Company
UID
CHE-211.640.937
Founded
2015 · 11 years
Last commercial register change
May 7, 2019
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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