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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureConstruction managerWinterthurQualicasa AG
Qualicasa AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Qualicasa AG provides construction quality assurance and technical lifecycle management for real estate. Its services include building inspections, condition assessments, technical due diligence, and digital tools for investment and maintenance planning.

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Service area

Offering

Products & services

Industry:Construction manager
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Qualicasa AG

Construction quality assurance
Construction quality assurance in development, construction and erection phases, including review of building and plant specifications, site walkthroughs, quality controls, and correction of quality deviations.
Technical condition assessment
Technical condition assessment of existing properties with document review, diagnosis, cost plausibility checks, risk adjustment, and determination of optimal refurbishment timelines.
Technical Due Diligence
Technical Due Diligence for buy- and sell-side decisions, including assessment of the structural condition, analysis of risks and weaknesses, review of building services, and cost estimation of required measures.
Acceptance and defect management
Acceptance process prior to handover, including factory inspections, pre-checks, measurements, early detection of defects, and support with notice periods and warranty claims.
Property lifecycle management
Property lifecycle management across the entire life cycle, with long-term planning, maintenance strategies, investment steering, and risk assessment at the property and portfolio level.
Value retention plan
Value retention plan for condominium owners and joint ownership entities, with building condition analysis, determination of the remaining service life of shared components, and contribution planning for the renewal fund.
QC Capex
QC Capex for the standardized capture of building components and material properties, with a risk model, refurbishment proposals, and support for investment planning for real-estate portfolios.
QC Visits
QC Visits for the digital and standardized survey of buildings and components, with a freely selectable thematic focus and data exchange via interfaces and integrations.
QC Sustainability
QC Sustainability for simulating energy and CO₂ reduction pathways, including scenario planning, comparability according to the REIDA standard, and adjustment of emission factors.
Trust & reputation

ranQ Trust Score of Qualicasa AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 100% · As of November 2026

Qualicasa AG scores 67.3 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.65.024%
  • 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.70.510%
  • 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.70.08%
Qualicasa AG scores 92.3 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.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.82.07%
Qualicasa AG scores 88.3 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).88.322%
Qualicasa AG scores 49.3 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 35.88.64%
  • 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

Qualicasa AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.3 out of 5 stars from 15 customer reviews. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
4.3
of 5

Aggregated from 15 reviews across all connected sources

Sources
GGoogle4.315
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

August 7, 2024Media
Qualicasa: Gründer Rolf Truninger ausgeschieden
immobilienbusiness.ch

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Location

Klosterstrasse 20
8406 Winterthur
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:00
Tue
08:00 - 12:00, 13:00 - 17:00
Wed
08:00 - 12:00, 13:00 - 17:00
Thu
08:00 - 12:00, 13:00 - 17:00
Fri
08:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-104.821.924
Founded
1998 · 28 years
Last commercial register change
June 3, 2026
Employees
21 to 50

Active in 1 of 26 cantons

  • ZHZurich
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.70.03%
    • Full methodology

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