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DirectoryConstruction & ArchitectureGeneral ContractorsSchaffhausenOsak Immobilien & Haustechnik AG
Osak Immobilien & Haustechnik AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Osak Immobilien & Haustechnik AG specialises in heating, sanitary and ventilation systems as well as the purchase, sale and rental of real estate. The company provides building-services planning, installation, renovation and maintenance, and supports property transactions.

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Offering

Products & services

Industry:General ContractorsReal Estate Brokerage
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Osak Immobilien & Haustechnik AG

Real Estate Project Development
✓ Offered5
Property brokerage
Purchase and sale of properties, letting, sale of plots, turnkey residential houses, developments, terraced houses, single-family houses and commercial spaces.
Building services planning
Planning of building services for single-family homes, multi-family homes and commercial buildings; design for water, gas and heating, specialist construction management and coordination of the installation.
Heating system installation and renovation
Renovation of heating systems, planning and installation of solar systems, heat pumps, concrete core heating and emergency heating, as well as individual service solutions.
Ventilation installation and service
Planning and installation of ventilation technology for new builds, conversions and renovations; extract ventilation for single rooms, comfort ventilation and filter replacement.
Plumbing installations
Planning, installation and advice for drinking water, wastewater pipes, sewer systems, compressed-air and gas installations, as well as central vacuum systems.
Trust & reputation

ranQ Trust Score of Osak Immobilien & Haustechnik AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Osak Immobilien & Haustechnik AG 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.
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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%
Osak Immobilien & Haustechnik AG scores 76.6 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.79.212%
  • 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%
Osak Immobilien & Haustechnik AG 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%
Osak Immobilien & Haustechnik AG scores 4.6 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 35.4.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Osak Immobilien & Haustechnik AG 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

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Location

Fulachstrasse 225
8200 Schaffhausen

At a glance

Legal form
Corporation
UID
CHE-339.177.639
Founded
2018 · 8 years
Last commercial register change
November 17, 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.100.06%
  • 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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