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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,544 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionRomanshornProjekt Bau-Contor AG
Projekt Bau-Contor AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Projekt Bau-Contor AG is the planning, realization and implementation of construction projects, particularly in the area of new buildings, conversions and repurposing of commercial and residential spaces, as well as the installation of photovoltaic systems. The company also offers services such as tender and contract control, execution control, cost control and defect management.

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Offering

Products & services

Industry:Building ConstructionBuilding Maintenance
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3.9/5

Projekt Bau-Contor AG

General Contractors
✓ Offered6
New construction
Planning and implementation of new builds, from the first idea to the completed construction project; advice, schedules, costs and execution are coordinated.
Client advisory / client representative
Construction support for client representatives and client consultants, including tendering and construction contract review, execution monitoring, cost control, BauAV and defect management.
Renovations / conversions
Advice on the current condition of properties, comparisons of costs and revenues for comprehensive refurbishments, and support with renovations and refurbishments.
Valuation
Valuation of new-build and conversion projects, feasibility assessment, development of options, returns and a reliable valuation based on transaction data.
Marketing and design
Graphic design, photography and web design; creation and updating of marketing materials, real-estate and portrait photography, and websites from concept to the final product.
Office and commercial space for rent
New office and commercial spaces at Hofstrasse 1 in Romanshorn, with ground-floor areas, flexible layouts and uses for offices or gastronomy.
Trust & reputation

ranQ Trust Score of Projekt Bau-Contor AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

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Data basis 58% · As of October 2026

Projekt Bau-Contor AG 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%
Projekt Bau-Contor AG scores 72.8 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.70.212%
  • 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%
Projekt Bau-Contor AG scores 85.0 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).85.022%
Projekt Bau-Contor AG scores 7.1 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 35.0.94%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.13.34%
Qualifications+0.00

Projekt Bau-Contor AG reaches a ranQ Trust Score of 3.9 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 58%, 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.

Press

Media

March 10, 2025Media
Gewerbeneubau Romanshorn: Sozialfirma Brüggli belegt unerwartet wenig Fläche
thurgauerzeitung.ch

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Location

Hofstrasse 1
8590 Romanshorn

At a glance

Legal form
Corporation
UID
CHE-386.769.857
Founded
2020 · 6 years
Last commercial register change
September 3, 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.
100.0
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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