ranQ
ranQ
ranQ
DirectoryIndustriesPlacesKnowledgeComparisonsSoon
Sign inCheck visibility
ranQHSG Startup LabelRecognised by the
HSG Startup Label

The leading AI company directory, built to boost AI visibility.

DEENFRIT
Product
  • Pricing
  • Directory
  • Industries
  • Trust Score
Company
  • About
  • Contact
  • Legal
© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringSchlierenWELM GmbH
WELM GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of WELM GmbH is the energetic renovation and optimization of buildings, including analysis, consulting and support of property owners in planning and implementing energetic renovation measures, with the aim of minimizing the energy consumption of buildings and securing the value retention of properties.

AI-generated
Offering

Products & services

Industry:Technical Consulting & Engineering
✓ Offered
LeadhubOutbound Leads by COHAGA

Looking for direct email addresses and phone numbers?

Leadhub delivers verified contact details and decision-makers from over 750,000 Swiss companies — management, procurement, marketing, HR.

Discover Leadhub
4.1/5

WELM GmbH

4
Building analysis
Comprehensive, tailor-made and holistic building analysis; assessment of the building envelope, energy efficiency, thermal bridges, condensation and mould growth, as well as renovation recommendations with a cost estimate.
Consulting
Renovation guide for planning possible measures; consulting as a complete project or in sub-projects, tailored to requirements and financial options, including funding programmes and tax benefits.
Support for renovation and construction projects
Support from planning through to realisation; cost monitoring, certification and quality assurance, either as a complete project or in individual modules over a longer period.
Reports and applications
Thermal insulation report, GEAK, application for funding, acoustic insulation report and approvals for building and renovation projects.
Trust & reputation

ranQ Trust Score of WELM GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

WELM GmbH has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
WELM GmbH scores 72.3 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.75.012%
  • 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%
WELM 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%
WELM GmbH scores 40.0 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 35.40.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

WELM GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

Knowledge

No knowledge articles yet

Once WELM GmbH has claimed this profile, we'll publish editorial articles and case studies here together.

Get started
Comparisons

WELM GmbH in comparison

Soon

Industry comparisons are coming soon

We're preparing industry comparisons that rank WELM GmbH by reviews, experience and specialisations.

Is this your company?

Claim the company profile of WELM GmbH to make its contact details visible. With a plan we additionally create and publish industry comparisons, articles and much more.

Secure profile

Location

Badenerstrasse 116
8952 Schlieren

At a glance

Legal form
Limited Liability Company
UID
CHE-285.891.461
Founded
2019 · 7 years
Last commercial register change
June 26, 2025
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.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

    Similar companies

    JK
    Jürg Kägi, Beratung und Support
    Wetzikon Zh
    WB
    Weber Bau&Beratung GmbH
    Opfikon
    MU
    MTP Umwelt GmbH
    Uster
    KI
    Klimagie Ingenieure AG
    Zurich
    BH
    BLM HAUSTECHNIK AG
    Zurich
    BS
    BD Safety GmbH
    Dietikon
    PF
    Planungsbüro Frei
    Hinwil
    EA
    Exergie AG
    Rüschlikon