ranQ
ranQ
ranQ
DirectoryIndustriesPlacesKnowledgeComparisonsSoon
Sign inCheck visibility
ranQHSG Startup LabelRecognised by the
HSG Startup Label

The leading AI company directory, built to boost AI visibility.

DEENFRIT
Product
  • Pricing
  • Directory
  • Industries
  • Trust Score
Company
  • About
  • Partner program
  • Contact
  • Legal
© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsZurichAtelier Arpagaus Sommer Zarn GmbH
Atelier Arpagaus Sommer Zarn GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Atelier Arpagaus Sommer Zarn is the planning and realization of architectural projects, including new buildings, conversions, renovations and repurposing of buildings and objects, as well as the design of urban planning and design projects.

AI-generated
Offering

Products & services

Industry:Architecture Firms
✓ Offered6
LeadhubOutbound Leads by COHAGA

Looking for direct email addresses and phone numbers?

Leadhub delivers verified contact details and decision-makers from over 750,000 Swiss companies — management, procurement, marketing, HR.

Discover Leadhub
3.9/5

Atelier Arpagaus Sommer Zarn GmbH

Architectural Planning and Design
Architectural planning and design for new builds and conversions, preliminary studies, feasibility studies, strategic planning, project development and submissions in competitions.
Execution Planning and Construction Delivery
Execution planning and delivery of new-build and conversion projects at different scales, including project planning and execution through to completion.
Renovation and Refurbishment
Renovation and refurbishment of residential buildings, faculty housing, office spaces and holiday houses, including heritage-listed buildings and technical upgrades.
New Construction of Residential and Functional Buildings
New construction of houses, multi-family buildings, centre buildings, schools, civil protection centres and other functional buildings.
Urban Design and Master Planning
Urban design, participation in master plans and urban project studies for neighbourhoods and larger development areas.
Competition Projects
Participation in open and selective design competitions as well as invited procedures for housing, education and special-purpose buildings.
Trust & reputation

ranQ Trust Score of Atelier Arpagaus Sommer Zarn GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Atelier Arpagaus Sommer Zarn GmbH scores 56.8 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.73.124%
  • 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.35.310%
  • 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%
Atelier Arpagaus Sommer Zarn GmbH scores 74.1 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.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.55.07%
Atelier Arpagaus Sommer Zarn GmbH 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%
Atelier Arpagaus Sommer Zarn GmbH 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

Atelier Arpagaus Sommer Zarn GmbH 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 3 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 3 reviews across all connected sources

Sources
GGoogle53
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

No knowledge articles yet

Once Atelier Arpagaus Sommer Zarn GmbH has claimed this profile, we'll publish editorial articles and case studies here together.

Get started
Comparisons

Atelier Arpagaus Sommer Zarn GmbH in comparison

Soon

Industry comparisons are coming soon

We're preparing industry comparisons that rank Atelier Arpagaus Sommer Zarn GmbH by reviews, experience and specialisations.

Is this your company?

Claim the company profile of Atelier Arpagaus Sommer Zarn GmbH to make its contact details visible. With a plan we additionally create and publish industry comparisons, articles and much more.

Secure profile

Location

Langmauerstrassse 20
8006 Zurich

At a glance

Legal form
Limited Liability Company
UID
CHE-327.247.150
Founded
2018 · 8 years
Last commercial register change
April 6, 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.88.06%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

    Similar companies

    PW
    Pascal Wassmann Architekten GmbH
    Zurich
    RA
    rfp architekten Architektur + Bauleitung AG
    Wallisellen
    BA
    BERTOLI ARCHITEKTEN GmbH
    Herrliberg
    AC
    Andri Cajos Architekten AG
    Zurich
    DA
    DESIGNFUNKTION AG
    Weiningen Zh
    2A
    2m architektur gmbh
    Wädenswil
    LG
    labsuite GmbH
    Zurich
    SA
    Sonderegger Architekten GmbH
    Zurich