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

About the company

Architekturbüro Robert Ehrsam GmbH provides architectural services and construction management, handling design and site supervision for new builds, extensions, renovations and roof conversions. The office carries out condition assessments, issues recommendations with cost estimates, and conducts feasibility studies and property analyses.

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Products & services

Industry:Architecture Firms
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Architekturbüro Robert Ehrsam GmbH

✓ Offered5
Architecture and construction management
New construction, additions and alterations, renovations and roof extensions; planning of preliminary and construction projects, construction management with cost monitoring, quality assurance and scheduling up to commissioning.
Property and condition analyses
Assessment of property conditions, recommendations for measures including cost implications, yield calculations and proposed procedures based on the current situation and site inspection.
Investigation of construction defects and building damage
Clarification of the initial situation, site survey of the property and conclusion with cost estimate in cases of construction defects and building damage.
Real estate management
Property management, apartment handovers and housing specialist consultations in connection with the management of real estate.
Client representation
Representation of clients in construction projects, from planning and feasibility studies through to cost control and quality assurance.
Trust & reputation

ranQ Trust Score of Architekturbüro Robert Ehrsam GmbH

Trust Score

No score yet

x

A published score requires a data basis of at least 50% and data from at least two criteria groups other than identity. Missing evidence: Review quality, Review volume, Review recency, Media authority

Data basis 54% · As of October 2026

Architekturbüro Robert Ehrsam 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.
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%
Architekturbüro Robert Ehrsam GmbH scores 83.0 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.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%
Architekturbüro Robert Ehrsam GmbH scores 83.3 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).83.322%
Architekturbüro Robert Ehrsam GmbH scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%

The data basis is 54%, below the threshold at which ranQ publishes a score. Evidence is missing for: Review quality, Review volume, Review recency, Media authority. As of October 2026.

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

Knowledge

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Location

Schweighofstrasse 309
8055 Zurich

At a glance

Legal form
Limited Liability Company
UID
CHE-431.207.384
Founded
2011 · 15 years
Last commercial register change
March 16, 2023
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.88.06%
  • 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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