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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsBaselGuerra Clauss Architekten SIA GmbH
Guerra Clauss Architekten SIA GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Guerra Clauss Architekt:innen is the planning and realization of construction projects, particularly in the fields of architecture, landscape architecture, and urban planning. The company offers services such as general planning, construction management, and project development, and is active in various segments, including culture, education, leisure, office, and residential.

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Products & services

Industry:Architecture Firms
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3.9/5

Guerra Clauss Architekten SIA GmbH

✓ Offered9
Architecture and urban planning
Architecture and urban planning for cities and buildings, focusing on user needs, construction systems, choice of materials and minimal environmental impact.
General planning
General planning for new builds, alterations and renovations, sometimes in ARGE, with coordination of specialist planners for building, building services, structural engineering, fire protection and acoustics.
Competition planning
Participation in architecture competitions for school, office, cultural and residential buildings, including new builds, extensions and urban-planning assignments.
School and education buildings
Planning of school facilities, cantonal schools, kindergartens, day-care structures and sports halls for education sites.
Office and administrative buildings
Planning of office buildings, townhouse-style buildings and administrative buildings, including new builds, extensions and renovations.
Residential construction and housing developments
Planning of apartments, residential buildings and residential site developments with shared and studio spaces, as well as additions in the outdoor area.
Renovations and alterations
Renovations, conversions and Re-Use projects, for example for administrative buildings and apartments, including façade and core refurbishment.
Site development and urban development
Site developments with new builds, conversion of existing buildings and design of outdoor areas, including public squares and shared community spaces.
Cultural and leisure facilities
Planning of cultural and leisure facilities such as theatres and sports halls, including public areas and catering.
Trust & reputation

ranQ Trust Score of Guerra Clauss Architekten SIA GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Guerra Clauss Architekten SIA GmbH scores 60.4 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.70.824%
  • 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.27.910%
  • 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.70.08%
Guerra Clauss Architekten SIA GmbH scores 68.7 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.58.012%
  • 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.70.07%
Guerra Clauss Architekten SIA 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%
Guerra Clauss Architekten SIA GmbH scores 31.4 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 35.31.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Guerra Clauss Architekten SIA 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 2 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
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Davidsbodenstrasse 72
4056 Basel
Opening hours
Mon
09:00 - 17:00
Tue
09:00 - 17:00
Wed
09:00 - 17:00
Thu
09:00 - 17:00
Fri
09:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-333.760.438
Founded
2022 · 4 years
Last commercial register change
November 15, 2024
Employees
11 to 20
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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