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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureGeneral ContractorsSt. GallenRosenblum Baumanagement AG
Rosenblum Baumanagement AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Rosenblum Baumanagement is construction management, including project optimization, construction management and architecture, with the company specializing in the coordination and execution of construction projects.

AI-generated
Offering

Products & services

Industry:General Contractors
✓ Offered6
Project development
Project development for construction projects, including architecture, project and construction management, as well as project management and owner advisory.
Project management
Project management for construction projects, including coordination of tasks, professional planning and organization, as well as alignment with the contract.
Construction management
Construction management for building projects, with coordinated execution, planning and organization for new builds, conversions, renovations and change of use.
Owner advisory
Owner advisory for architectural, design and technical requirements, as well as user-specific needs.
Condition assessment
Condition assessment of buildings and construction assets as a basis for further planning, renovation or change of use.
Architecture
Architecture for construction projects, integrated into project development, project execution and construction management.
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4.1/5

Rosenblum Baumanagement AG

Trust & reputation

ranQ Trust Score of Rosenblum Baumanagement AG: 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.

Rosenblum Baumanagement 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.
x
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%
Rosenblum Baumanagement AG scores 81.1 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
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%
Rosenblum Baumanagement AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
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%
Rosenblum Baumanagement AG scores 0.9 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 35.0.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Rosenblum Baumanagement AG 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

Peter-und-Paul-Strasse 30
9010 St. Gallen
Opening hours
Mon
07:00 - 12:00, 13:00 - 18:00
Tue
07:00 - 12:00, 13:00 - 18:00
Wed
07:00 - 12:00, 13:00 - 18:00
Thu
07:00 - 12:00, 13:00 - 18:00
Fri
07:00 - 12:00, 13:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-145.602.041
Founded
2015 · 11 years
Last commercial register change
December 18, 2015
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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