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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil Engineering FirmsWillisauPlanQuadrat AG
PlanQuadrat AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of PlanQuadrat AG is the provision of services in the field of civil engineering, including design, planning and consulting for various types of construction projects, such as residential construction, commercial and industrial construction, public buildings, renovations, special foundation engineering, infrastructure, transportation and road construction, settlement drainage, utility lines, sports facilities, environmental and water engineering, flood protection and renaturation, gravel mining and landfills, construction consulting, construction monitoring and consulting, as well as cadastral surveying and condition assessments.

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Products & services

Industry:Civil Engineering Firms
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PlanQuadrat AG

Structural design
Structural engineering for residential construction, commercial and industrial construction, public buildings, conversions and special deep foundation works; 3D design and Big-BIM depending on the project.
Infrastructure
Planning and construction supervision for transport and road construction, municipal drainage, utility lines and sports facilities.
Environmental and water engineering
Flood protection and renaturation, water protection planning as well as gravel extraction and landfills.
Construction consultancy
Construction inspections and advisory services for municipalities and public authorities, cadastre matters and condition surveys.
Trust & reputation

ranQ Trust Score of PlanQuadrat AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

PlanQuadrat AG scores 67.6 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.73.324%
  • 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.45.610%
  • 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.78.08%
PlanQuadrat 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%
PlanQuadrat AG scores 85.0 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).85.022%
PlanQuadrat AG scores 37.1 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 35.37.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

PlanQuadrat AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.8 out of 5 stars from 5 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
4.8
of 5

Aggregated from 5 reviews across all connected sources

Sources
GGoogle4.85
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Steinmatt 1
6130 Willisau
Opening hours
Mon
07:30 - 11:30, 13:30 - 17:00
Tue
07:30 - 11:30, 13:30 - 17:00
Wed
07:30 - 11:30, 13:30 - 17:00
Thu
07:30 - 11:30, 13:30 - 17:00
Fri
07:30 - 11:30, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-100.469.171
Founded
1992 · 34 years
Last commercial register change
August 5, 2025
Employees
21 to 50
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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