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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsSolothurngsj architekten ag
gsj architekten ag Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company's core activity is the planning and realization of construction projects, particularly in the fields of architecture, urban planning and monument preservation. This includes the creation of concepts, preliminary studies, feasibility studies, designs and execution plans, as well as construction management and cost control. The company also offers specialized services such as competition jurying, expert opinions and client representation.

AI-generated
Offering

Products & services

Industry:Architecture Firms
✓ Offered8
Architecture
Architecture for public buildings, housing, services, commerce, healthcare and industry; from new builds to conversions and renovations, up to demolition, including design development and construction planning.
Urban planning
Urban planning solutions and site developments based on analysis and design; development of specific projects for complex requirements and existing spatial conditions.
Heritage conservation
Heritage conservation works for preserving and carefully developing historic buildings; interventions focusing on retaining the structure and adapting it to new uses.
Planning and construction management
Planning and construction management for new builds, conversions, renovations and demolitions; from strategic planning and preliminary studies to detailed construction planning, cost monitoring and acceptance.
General planning
Project delivery as general planner, coordinating concept, design development, tendering, execution and cost control up to acceptance.
Competition jury services
Participation in competition juries as well as expert assessment of project and architecture competitions.
Expert reports
Technical expert reports on construction, conversion and renovation topics, as well as assessments in an architectural context.
Client representation
Representation of the client in planning, coordination and project implementation vis-à-vis planners, contractors and authorities.
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4.1/5

gsj architekten ag

Trust & reputation

ranQ Trust Score of gsj architekten ag: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 58% · As of October 2026

Without public customer reviews the score stays capped.

gsj architekten ag has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
gsj architekten 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%
gsj architekten 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%
gsj architekten ag scores 58.6 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 35.57.14%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.60.04%
Qualifications+0.00

gsj architekten ag reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 58%, 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.

Press

Media

July 9, 2026Media
Schule Utzigen-Littewil soll für 15 Millionen saniert werden
nau.ch
June 30, 2026Media
In die Jahre gekommen: Schule Utzigen-Littewil wird saniert
nau.ch
May 30, 2026Media
Planerteam gewählt: Ein Tageszentrum im Alterszentrum Wengistein rückt einen Schritt näher
solothurnerzeitung.ch
July 24, 2025Media
Öffentliche Auflage Niedergösgen: Neuer Versuch für Projekt Schachenstrasse
oltnertagblatt.ch
July 7, 2025Media
Blumenhaus Buchegg: Der Grundstein für das neue Internat ist gelegt
solothurnerzeitung.ch
February 22, 2024Media
So soll das neue Schulhaus für die Mega-Oberstufe in Möriken-Wildegg aussehen
aargauerzeitung.ch

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Location

Weissensteinstrasse 81
4500 Solothurn

At a glance

Legal form
Corporation
UID
CHE-105.111.825
Founded
1999 · 27 years
Last commercial register change
April 30, 2026
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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