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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsWinterthurRB Bauplanung GmbH
RB Bauplanung GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Bosshard Architekten GmbH (now RB Bauplanung GmbH) is the planning and realization of renovation and new construction projects, particularly for multi-family homes, taking into account economic and ecological aspects. This also includes services such as construction management, architecture and consulting.

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RB Bauplanung GmbH

7
Overall planning and construction management
Feasibility studies, all planning phases, implementation, commissioning and management of the two-year warranty acceptance inspections; personal consultation throughout the entire planning and construction process.
Renovation and new build
Planning and implementation of conversions and new builds according to the client’s ideas and wishes, for residential buildings and other construction projects.
Modernisation and refurbishment of multi-family houses
Modernisation of occupied multi-family houses, renovations, façade refurbishments, roof and window refurbishments, as well as kitchen and bathroom refurbishments.
Construction management
In-house construction management department for cost, schedule and quality control during execution.
Renovation and fit-out of existing properties
Conversions, fit-outs, storey extensions, extensions, attic conversions and changes of use of residential, commercial and public buildings.
Building refurbishments and repair works
Exterior and interior refurbishments, flat roof refurbishments, garage refurbishments, wet-room refurbishments and other repairs in existing buildings.
Concept and property analyses
Feasibility and potential analyses, preliminary diagnoses as well as property analyses for existing buildings and portfolios.
Trust & reputation

ranQ Trust Score of RB Bauplanung GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

RB Bauplanung 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%
RB Bauplanung GmbH scores 83.0 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.100.012%
  • 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%
RB Bauplanung 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%
RB Bauplanung GmbH scores 6.6 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.6.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

RB Bauplanung 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

Römerstrasse 201
8404 Winterthur

At a glance

Legal form
Limited Liability Company
UID
CHE-115.414.894
Founded
2010 · 16 years
Last commercial register change
February 24, 2025
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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