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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSustainability SectorZurichViridén + Partner AG
Viridén + Partner AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The core activity of Viridén+Partner AG is the planning and consulting of energy-efficient renovations and conversions of buildings, particularly in the area of plus-energy and zero-energy houses, multi-family homes, office and commercial buildings. The company also offers expert opinions, courses, lectures and publications on these topics.

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Viridén + Partner AG

Offering

Products & services

Industry:Sustainability Sector
✓ Offered4
Architectural services for renovations and conversions
Architectural office for renovations and conversions based on ecological criteria; needs assessment, solution strategies, conversion and renovation concepts, variant studies, cost estimates, project planning, tendering, construction management, acceptance, commissioning.
Research and development in building-integrated photovoltaics
Applied research and development as well as pilot and demonstration projects; architectural design of building-integrated photovoltaic systems and complex planning, including the Horizon-2020 project BIPVBoost.
Advisory services and expert reports
Advisory services and expert reports as an independent service area of the office, complementing the office’s project and research offering in the field of renovations, conversions and ecological architecture.
Courses and lectures
Courses and lectures on the office’s technical topics, in particular in the context of sustainable building, renovations and building-integrated photovoltaics.
Trust & reputation

ranQ Trust Score of Viridén + Partner AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 100% · As of October 2026

Viridén + Partner 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%
Viridén + Partner AG scores 89.3 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.70.07%
Viridén + Partner 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%
Viridén + Partner AG scores 34.3 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 35.68.64%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

Viridén + Partner 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

November 10, 2017Media
Eine Haut aus Solarmodulen
espazium.ch

Knowledge

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Location

Zweierstrasse 35
8004 Zurich

At a glance

Legal form
Corporation
UID
CHE-110.617.697
Founded
2004 · 22 years
Last commercial register change
June 25, 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.
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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