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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsBirsfeldenDavid Theill Architektur GmbH
David Theill Architektur GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

David Theill Architektur GmbH provides architectural and construction management services, covering project phases according to SIA 102 such as feasibility studies, project and execution planning, permitting, tendering and construction supervision. The firm also provides real estate services including property valuations, sales and purchase support.

AI-generated
Offering

Products & services

Industry:Architecture Firms
✓ Offered4
Architecture and Construction Management
New builds of single- and multi-family houses, extensions, conversions and additions, renovations and refurbishments; planning according to SIA 102, building permits, tendering, construction management, and cost control.
Real Estate Consulting, Appraisals and Sales
Advice on real estate matters, property valuations for sales or inheritances, sale of properties with sales documentation, viewings, and processing with notary offices and authorities.
Property Search and Purchase Support
Support in finding development land, single- and multi-family houses, or commercial properties, with evaluation, solution proposals, forecasts, return calculations, and purchase processing.
Consulting in Architecture, Construction and Real Estate Matters
Consulting on architecture, construction and real estate questions, as an additional service to property development, conversions, refurbishments, and real estate topics.
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3.7/5

David Theill Architektur GmbH

Trust & reputation

ranQ Trust Score of David Theill Architektur GmbH: 3.7 out of 5.0

Trust Score3.7/ 5.0

Solid

x

Data basis 96% · As of October 2026

David Theill Architektur GmbH scores 53.8 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
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.35.08%
David Theill Architektur GmbH scores 67.6 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.70.212%
  • 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%
David Theill Architektur 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%
David Theill Architektur GmbH scores 0.6 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 35.0.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

David Theill Architektur GmbH reaches a ranQ Trust Score of 3.7 out of 5.0 — rated «Solid». 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.

Knowledge

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Comparisons

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Location

Muttenzerstrasse 39
4127 Birsfelden
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
Branch
UID
CHE-380.344.577
Founded
2020 · 6 years
Last commercial register change
October 22, 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.
76.0
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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