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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringOberentfeldenBau- und Energieberatung Reto Niedermann GmbH
Bau- und Energieberatung Reto Niedermann GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Bau- und Energieberatung Reto Niedermann GmbH provides energy and building consultancy including building-physics services such as energy calculations, GEAK®-Plus assessments, airtightness (BlowerDoor) tests, thermography and certification support. The company also designs and supplies prefabricated bathroom systems for care facilities, hotels and residential buildings and assists with planning, production drawings and subsidy applications.

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Products & services

Industry:Technical Consulting & Engineering
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Bau- und Energieberatung Reto Niedermann GmbH

Sustainability Sector
✓ Offered4
Energy consulting
Advisory services for the building envelope and building services, including preliminary consultation, planning consultation, advice for industrial and protected sites, GEAK®-Plus, modernisation concept, replacement of heating systems and funding subsidies.
Building physics
Building-physics services including energy performance certificates, private checks, verification testing for municipalities, Minergie® certifications, calculations of thermal bridges, WUFI analyses, BlowerDoor tests and thermography.
Construction consulting
Consulting for new builds, extensions, modernisation and acquisition of properties, as well as building damage analysis, construction reports, court expert opinions and neutral assessment of building fabric, energy efficiency and building services.
Prefabricated bathroom systems
Prefabricated turnkey bathrooms for care facilities, hotels and residential construction, including planning, working drawings, technical clarification, fabrication and installation for solid construction, light-frame and renovation solutions.
Trust & reputation

ranQ Trust Score of Bau- und Energieberatung Reto Niedermann GmbH: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

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Data basis 96% · As of October 2026

Bau- und Energieberatung Reto Niedermann GmbH scores 49.1 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.41.924%
  • 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.88.08%
Bau- und Energieberatung Reto Niedermann GmbH scores 83.0 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.100.012%
  • 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.55.07%
Bau- und Energieberatung Reto Niedermann GmbH scores 83.3 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).83.322%
Bau- und Energieberatung Reto Niedermann GmbH scores 34.3 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 35.34.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Bau- und Energieberatung Reto Niedermann GmbH reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 2.3 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
2.3
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle2.33
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Industriestrasse 12A
5036 Oberentfelden

At a glance

Legal form
Limited Liability Company
UID
CHE-321.669.707
Founded
2011 · 15 years
Last commercial register change
May 23, 2023
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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