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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsFrauenfeldLEHMANN HAFFTER ARCHITEKTUR GmbH
LEHMANN HAFFTER ARCHITEKTUR GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Lehmann Haffter Architektur GmbH is the planning and realization of construction projects, particularly in the field of high-rise construction, such as residential buildings, housing estates, schools, sports halls and other buildings. The company offers services such as architecture, planning, design and renovation of buildings.

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Products & services

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3.9/5

LEHMANN HAFFTER ARCHITEKTUR GmbH

3
Architectural planning
Planning of residential houses, housing estates, townhouses and public buildings; new construction, conversion, renovation, adding additional floors, expansion and fit-out of projects.
Competitions and studies
Studies, competition entries and designs for housing estates, school facilities and other building projects.
Design of outdoor spaces
Design of garden facilities and spatial environments in connection with building projects.
Trust & reputation

ranQ Trust Score of LEHMANN HAFFTER ARCHITEKTUR GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

LEHMANN HAFFTER ARCHITEKTUR GmbH scores 54.8 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.69.624%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.35.310%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.35.08%
LEHMANN HAFFTER ARCHITEKTUR GmbH scores 80.9 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.95.212%
  • 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%
LEHMANN HAFFTER ARCHITEKTUR GmbH 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%
LEHMANN HAFFTER ARCHITEKTUR GmbH scores 34.3 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 35.34.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

LEHMANN HAFFTER ARCHITEKTUR GmbH reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 4.7 out of 5 stars from 3 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
4.7
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle4.73
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Hohenzornstrasse 6
8500 Frauenfeld

At a glance

Legal form
Limited Liability Company
UID
CHE-136.004.906
Founded
2013 · 13 years
Last commercial register change
June 20, 2022
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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