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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionDöttingenBirchmeier Bau AG
Birchmeier Bau AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Birchmeier Bau AG is a construction company providing building construction, civil engineering and specialist deep-foundation services, and operating as a general and total contractor. Its activities include renovations and infrastructure projects, coordinated with the group's real-estate development and building-materials logistics offerings.

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Products & services

Industry:Building ConstructionGeneral Contractors
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3.9/5

Birchmeier Bau AG

✓ Offered5
Building construction
Building construction for residential building, commercial and industrial construction, infrastructure projects as well as conversions and refurbishments, including drilling, milling and concrete repairs.
Civil engineering and earthworks
Civil engineering and earthworks for demolition, earthworks, infrastructure construction, water engineering and site works, including excavation pits, remediation of contaminated sites, pipeline construction and trenchless pipeline construction.
Special foundation engineering
Special foundation engineering with comprehensive excavation pits, excavation pit closures, pile foundations, water engineering and special drilling, on request as total or partial services.
General contractor and total contractor
General contractor and total contractor for residential construction, commercial and industrial construction, public buildings as well as conversions and refurbishments, from pre-project through to defect-free handover.
Real estate development
Real estate development, planning and realization of special properties for residential and commercial space, complemented by projects for institutional investors, private buyers and rental properties.
Trust & reputation

ranQ Trust Score of Birchmeier Bau AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 100% · As of October 2026

Birchmeier Bau AG scores 47.1 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.54.224%
  • 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.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.50.08%
Birchmeier Bau AG scores 91.4 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.89.612%
  • 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.90.07%
Birchmeier Bau AG 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%
Birchmeier Bau AG scores 55.0 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 35.100.04%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.10.04%
Qualifications+0.00

Birchmeier Bau AG reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 3.0 out of 5 stars from 2 customer reviews. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
3
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle32
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

November 7, 2019Media
«Bei uns ist ein Wort ein Wort»
nfz.ch
April 20, 2019Media
Bau-Unternehmer Birchmeier: «Die Region hat grosses Wachstumspotenzial»
aargauerzeitung.ch
January 11, 2019Media
JAHRES RÜCKBLICK 2018
nfz.ch

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Location

Gewerbestrasse 21
5312 Döttingen
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:30
Tue
07:30 - 12:00, 13:00 - 17:30
Wed
07:30 - 12:00, 13:00 - 17:30
Thu
07:30 - 12:00, 13:00 - 17:30
Fri
07:30 - 12:00, 13:00 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-165.894.390
Founded
2015 · 11 years
Last commercial register change
May 18, 2026
Employees
51 to 100
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.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.85.03%
    • Full methodology

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