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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitectBaselLiederer Architektur GmbH
Liederer Architektur GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Liederer Architektur GmbH is an architecture practice working on building conversions and renovations. Its portfolio includes single-family homes, townhouses, apartments and public buildings.

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Service area

Offering

Products & services

Industry:Architect
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3.9/5

Liederer Architektur GmbH

Architectural planning and construction management
Planning and execution of building projects, support of the client, development according to needs and resources, construction management with experienced specialists.
Renovation
Renovations of single-family homes, row houses, townhouses and existing buildings, including attic conversions, conversions of use and adaptations to new uses.
Refurbishment
Refurbishments of single-family homes, townhouses, condominiums and public buildings, including façade refurbishments and refurbishment in protected zones.
Energy-efficient refurbishment
Energy-efficient refurbishment of existing buildings, combined with renovation or restoration work and focused on renewal of the existing stock.
Restoration of listed buildings
Restoration of listed buildings, particularly existing buildings with protected status or located in protected zones (Schonzonen).
Conversion of buildings
Conversion of existing buildings, for example from commercial or production uses to apartments or loft apartments.
Trust & reputation

ranQ Trust Score of Liederer Architektur GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

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Data basis 96% · As of November 2026

Liederer Architektur GmbH scores 61.3 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.68.224%
  • 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.17.610%
  • 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.95.08%
Liederer Architektur GmbH scores 77.2 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.86.512%
  • 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%
Liederer Architektur GmbH scores 86.7 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).86.722%
Liederer Architektur GmbH scores 4.6 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 35.4.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Liederer Architektur GmbH reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Dornacherstrasse 277
4053 Basel
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-304.139.992
Founded
2016 · 10 years
Last commercial register change
August 28, 2026
Employees
1 to 10

Active in 3 of 26 cantons

  • Northwestern Switzerland
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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