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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil Engineering FirmsMendrisioHOLINGER AG
HOLINGER AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

HOLINGER AG is an engineering firm that develops solutions for the water cycle and provides technical consulting and planning services. Its areas of expertise include wastewater, water supply, hydraulic engineering, environment and sustainability, as well as construction, energy, industry and digital planning.

AI-generated
Offering

Products & services

Industry:Civil Engineering Firms
✓ Offered8
Wastewater treatment
Wastewater treatment plants for municipal and industrial wastewater, expansion and new plants, optimization of operations, removal of micro-pollutants and energy recovery of sludge.
Civil and infrastructure construction
Planning of infrastructure and building projects, planning of excavations, subsoil investigation, fire protection, seismic assessment, load-bearing structures and construction of service lines.
Urban drainage
Rainwater management, drainage concepts and PGS, sponge city, 1D/2D/3D hydraulic modelling, network management and measurement campaigns.
Hydraulic works
Hazard mapping, risk analysis, hydrological assessments, flood protection, revitalisation, planning maintenance for watercourses and emergency measures.
Water supply
Planning of systems and pipelines, treatment of drinking water, operational consulting, strategic planning, quality assurance, protection zones and hydraulic calculations.
Digital planning
BIM, GIS and CAD modelling for project planning, including management and coordination of the models, integrated data management, complex mapping and 3D visualizations.
Energy
Development of energy solutions for decarbonisation, area supply, energy storage, thermal and cooling plants, power plants and special installations.
Environment and sustainability
Environmental assessments, environmental support of construction sites, waste and resource management, sustainability consulting, geology and groundwater, remediation of contaminated sites.
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3.8/5

HOLINGER AG

Trust & reputation

ranQ Trust Score of HOLINGER AG: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 100% · As of October 2026

HOLINGER AG scores 53.8 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.70.824%
  • 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.35.08%
HOLINGER AG scores 75.2 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.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.70.07%
HOLINGER AG scores 86.7 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).86.722%
HOLINGER AG scores 50.0 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.0.04%
Qualifications+0.00

HOLINGER AG reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 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
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

June 30, 2026Media
«Het äs Gschmäckli»: Gemeindepräsidentin gibt Ehemann Bauaufträge
20min.ch

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Location

Via Luigi Lavizzari 15
6850 Mendrisio
Opening hours
Mon
08:00 - 18:00
Tue
08:00 - 18:00
Wed
08:00 - 18:00
Thu
08:00 - 18:00
Fri
08:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Branch
UID
CHE-415.041.866
Founded
2018 · 8 years
Last commercial register change
September 10, 2025
Employees
11 to 20
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.
76.0
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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