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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsZurichstarch.gmbh
starch.gmbh Logo
Verified· 2 sourcesTrust Score
Summary

About the company

starch.gmbh is an architectural firm that provides design, planning, general planning, construction management and project development. The practice carries out projects for residential buildings, school facilities and commercial buildings.

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Products & services

Industry:Architecture Firms
✓ Offered
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4.1/5

starch.gmbh

4
Design and planning
Design and planning for residential buildings, school buildings and commercial buildings; development of independent structures with attention to communal living, scale and sustainability.
Overall planning
Overall planning for architectural projects, from conception to the coordination of various planning tasks.
Execution and construction management
Execution and construction management for construction projects, with careful material definition and consistent implementation until completion.
Project development
Project development for architectural projects, from the first idea to the processing and further development of projects.
Trust & reputation

ranQ Trust Score of starch.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.

starch.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%
starch.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%
starch.gmbh 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%
starch.gmbh scores 17.1 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 35.17.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

starch.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

Tellstrasse 4
8004 Zurich
Opening hours
Mon
08:30 - 18:30
Tue
08:30 - 18:30
Wed
08:30 - 18:30
Thu
08:30 - 18:30
Fri
08:30 - 18:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-256.694.510
Founded
2011 · 15 years
Last commercial register change
November 6, 2020
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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