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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil Engineering FirmsHünenbergHOLINGER 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 multidisciplinary planning and consulting services across wastewater, water supply, hydraulic engineering, environment and sustainability, energy, construction, industry, geology and digital planning.

AI-generated
Offering

Products & services

Industry:Civil Engineering Firms
✓ Offered9
Urban drainage
Rainwater management, sponge city and blue-green infrastructure, drainage concepts and master drainage planning, sewer systems, special structures, hydraulics and integrated network management.
Wastewater
Conception, planning and construction of wastewater treatment plants, expansions and new builds, operational optimisation, micropollutants, sludge valorisation, industrial wastewater pre-treatment, and nitrogen and phosphorus removal.
Construction
Excavation pit planning, special deep foundation engineering, soil investigations, infrastructure construction, industrial construction, building construction, road and rail construction, structural engineering design, asset preservation, and utility line construction.
Water supply
Plant and utility line construction, drinking water treatment, advisory services and operational support, strategic water supply planning, quality assurance, regulations, protection zones, and hydraulic calculations.
Water engineering
Preparation of base studies, hazard mapping, risk analyses, hydrology reports, protection works management, flood protection, revitalisation, defining river space, emergency planning and event analysis.
Digital planning
BIM management, coordination, modelling, integrated data management, GIS, sewer cadastre, CAD 3D modelling, pipeline planning, visualisations and BIM-to-Field.
Energy
Area supply, energy storage, heating centres and cooling plants, power plants and special facilities for the decarbonisation of heat, cold, electricity and process energy.
Industry
Engineering services for industrial water, energy and environmental matters, from impact studies and laboratory analyses through preliminary design and detailed planning to execution and operational support.
Environment & Sustainability
Financing models, cost allocation schemes and fee models, contaminated sites, building pollutants, radon and indoor air measurements, environmental compatibility, environmental construction supervision, sustainability consulting, geology and groundwater.
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3.9/5

HOLINGER AG

Trust & reputation

ranQ Trust Score of HOLINGER AG: 3.9 out of 5.0

Trust Score3.9/ 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 82.1 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.95.212%
  • 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 3.9 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

Knowledge

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Location

Bösch 53
6331 Hünenberg
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-274.715.392
Founded
2013 · 13 years
Last commercial register change
October 4, 2013
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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