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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsEttiswilHeller Plan AG
Heller Plan AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Heller Plan AG is an architecture and structural engineering firm that provides project planning and execution for new buildings, renovations and conversions. Services include architectural design, construction management, structural engineering, fire protection (VKF), energy assessments (GEAK/Minergie) and Feng Shui, with multidisciplinary support from concept to handover.

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Products & services

Industry:Architecture Firms
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4.0/5

Heller Plan AG

✓ Offered6
Architecture
Design, planning and support for new builds, renovations and conversions for single- and multi-family homes as well as commercial and industrial buildings, from idea to handover.
Construction management
Tender documents, quotations, contractor work agreements, site management and supervision as well as construction bookkeeping and final accounts to ensure compliance with the cost ceiling.
Structural engineering
Design of the load-bearing structure for timber construction, steel construction, reinforced concrete construction and composite construction, selecting suitable materials for each project.
Fire protection
Fire protection consulting and support up to quality level QSS 3, including documentation and coordination with the fire authorities.
Energy consulting
Advice for energy renovations, preparation of GEAK and GEAK-Plus, support for Minergie measures, energy performance certificates in accordance with SIA 380/1, and assistance with funding.
Feng Shui consulting
Analysis of the living and working situation, as well as advice and support regarding measures to improve well-being in living and work spaces.
Trust & reputation

ranQ Trust Score of Heller Plan AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Heller Plan AG scores 56.6 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.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.50.08%
Heller Plan AG scores 85.5 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.55.07%
Heller Plan AG scores 85.0 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).85.022%
Heller Plan 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

Heller Plan AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 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
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.

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Location

Rütimatt 9
6218 Ettiswil

At a glance

Legal form
Corporation
UID
CHE-103.352.950
Founded
1996 · 30 years
Last commercial register change
November 12, 2021
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.
100.0
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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