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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil Engineering FirmsSt. GallenRibi + Blum AG
Ribi + Blum AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Ribi + Blum AG is an engineering and planning firm (SIA / suisse.ing) providing structural engineering and planning services across building construction, civil engineering and transport for all project phases. Services include steel construction, special foundations, excavation design, seismic safety, building preservation and expert reports, as well as sewer and utility planning, road construction and the use of BIM methods.

AI-generated
Offering

Products & services

Industry:Civil Engineering Firms
✓ Offered8
Steel construction
Optimised structural design, project management, drawings and documentation, as well as structural calculations for demanding steel construction projects; including expert reports, damage cases, condition surveys and remediation measures.
Structural design for buildings
Structural design for all types of buildings, with planning services for all design phases up to and including execution; including planning of excavation pits, special foundations and earthquake safety.
Preservation of structures and expert reports
Condition surveys, planning of measures and execution of restoration works, as well as expert reports in structural engineering; also for damage, conditions and need for refurbishment.
Urban drainage
Planning, dimensioning, construction, rehabilitation and maintenance of sewer networks, pipe systems and special structures; including stormwater drainage, retention and infiltration facilities as well as siphon systems.
Utility lines and site development
Preliminary design through to execution for supply and disposal lines; planning, construction, rehabilitation and supervision of infrastructure facilities for the full development of industrial, commercial and residential sites.
Road construction
Planning through to delivery of new road construction and road rehabilitation for private, municipal and cantonal clients; integrated project development according to applicable VSS standards.
Harbour facilities and water engineering
Planning of harbour facilities and water-engineering solutions in civil engineering, including projects in the port and waterfront areas.
Parking
Planning of parking facilities and parking garages as part of traffic planning.
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3.7/5

Ribi + Blum AG

Trust & reputation

ranQ Trust Score of Ribi + Blum AG: 3.7 out of 5.0

Trust Score3.7/ 5.0

Solid

x

Data basis 96% · As of October 2026

Ribi + Blum AG scores 49.8 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.68.224%
  • 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.17.610%
  • 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%
Ribi + Blum AG scores 62.4 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.58.012%
  • 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.55.07%
Ribi + Blum 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%
Ribi + Blum AG scores 57.1 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 35.57.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Ribi + Blum AG reaches a ranQ Trust Score of 3.7 out of 5.0 — rated «Solid». The rating draws, among other things, on 5.0 out of 5 stars from 1 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 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Mövenstrasse 4
9015 St. Gallen
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
Branch
UID
CHE-487.121.731
Founded
2022 · 4 years
Last commercial register change
June 14, 2022
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.
76.0
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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