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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsBadenrgp architekten sia ag
rgp architekten sia ag Logo
Verified· 3 sourcesTrust Score
Summary

About the company

rgp architekten sia ag is an architectural firm that provides development, design, planning and construction services for building projects. Its services include 3D modelling, tender and execution planning, construction cost management, site supervision, renovation and refurbishment management, and advisory services such as property valuations and energy-concept development.

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Offering

Products & services

Industry:Architecture Firms
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rgp architekten sia ag

Project development and project planning
Studies, feasibility studies, use studies, preliminary projects, building projects, permit procedures, development plans and special land-use planning for building projects.
Planning
Tender planning, detailed planning and execution planning as a basis for cost certainty, schedule reliability and the implementation of the architecture.
Implementation and construction management
Tendering, bill of quantities preparation, works contracts, construction cost management, on-site construction management, design management, quality assurance, commissioning, final accounts and construction documentation.
Renovation and refurbishment
Support for renovation and refurbishment processes, detailed cost estimates, construction cost guidance, project consulting and site coordination for existing building fabric.
Construction cost management and estimating
Rough cost estimates, cost estimates by construction elements, cost estimates/provisional budgets, review of contractor invoices and construction account statements, as well as construction and consortium accounting.
Client advisory services and project support
Independent consulting, client representation, assessments and surveys, project appraisals, sales documentation, maintenance concepts, refurbishment concepts and energy concepts.
3D modelling and visualization
3D models for new-build projects, simple plaster model visualizations, photorealistic visualizations with partners and model refinement up to a scale of 1:50.
Trust & reputation

ranQ Trust Score of rgp architekten sia ag: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

rgp architekten sia ag 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%
rgp architekten sia 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%
rgp architekten sia 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%
rgp architekten sia ag scores 10.9 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 35.10.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

rgp architekten sia 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 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.

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Location

Mellingerstrasse 20
5400 Baden
Opening hours
Mon
08:00 - 17:30
Tue
08:00 - 17:30
Wed
08:00 - 17:30
Thu
08:00 - 17:30
Fri
08:00 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.047.305
Founded
1999 · 27 years
Last commercial register change
August 5, 2026
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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