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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,888 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsMelchnauRolf Jaeggi Architektur GmbH
Rolf Jaeggi Architektur GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Rolf Jaeggi Architektur GmbH is an architectural practice that designs and manages sustainable new-build and alteration projects. Services include feasibility studies, architectural and interior design, cost planning and construction management, as well as refurbishment, extensions and interventions on existing buildings.

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Products & services

Industry:Architecture Firms
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3.8/5

Rolf Jaeggi Architektur GmbH

✓ Offered6
Architecture
Architectural concepts for new builds and renovations, from use and structure to the interior and exterior appearance, as well as the link to the surroundings.
Interior design
Interior design of rooms focusing on materials, proportions, light and atmosphere for functional and emotionally appealing interiors.
Cost planning & construction management
Execution planning, cost planning and construction management; coordination between architecture, structural engineering, building services and energy requirements up to handover.
Renovation and extension
Renovations and extensions to adapt existing buildings to current needs, coordinated with specialist trades and authorities.
Renovation of existing buildings
Planning and further development of existing buildings, with analysis of site-typical conditions and careful integration into the existing building fabric.
House analysis – feasibility study
Analysis of plots of land and buildings, assessing building condition, investment needs and suitability for an extension, renovation or new build.
Trust & reputation

ranQ Trust Score of Rolf Jaeggi Architektur GmbH: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

Rolf Jaeggi Architektur GmbH scores 59.3 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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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.75.024%
  • 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.40.910%
  • 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%
Rolf Jaeggi Architektur 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%
Rolf Jaeggi Architektur GmbH scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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).83.322%
Rolf Jaeggi Architektur GmbH scores 4.3 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 35.4.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Rolf Jaeggi Architektur GmbH reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 4 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 4 reviews across all connected sources

Sources
GGoogle54
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Dorfstrasse 66
4917 Melchnau
Opening hours
Mon
07:00 - 17:30
Tue
07:00 - 17:30
Wed
07:00 - 17:30
Thu
07:00 - 17:30
Fri
07:00 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-486.697.313
Founded
2018 · 8 years
Last commercial register change
January 22, 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.
88.0
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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