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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,888 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil EngineeringLangenthalSIEGRIST INGENIEUR- UND PLANUNGSBÜRO AG
SIEGRIST INGENIEUR- UND PLANUNGSBÜRO AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

SIEGRIST INGENIEUR- UND PLANUNGSBÜRO AG is an engineering and planning office providing civil engineering services such as road construction, civil works, railway engineering, hydraulic engineering, structural design, client representation, surveying/GIS and BIM.

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Offering

Products & services

Industry:Civil Engineering
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SIEGRIST INGENIEUR- UND PLANUNGSBÜRO AG

Civil engineering works
Planning and implementation of water supply systems, wastewater systems, municipal drainage and utility systems; property servicing, developments, GEP and GWP.
Road construction
Planning and implementation of road and traffic systems, rehabilitation planning and maintenance management, traffic safety and traffic design expert assessments, noise protection measures.
Rail construction
Specialist and overall planning for standard and narrow-gauge lines, track renewals, extension and conversion of stations, noise protection measures, special structures and PGV procedures.
Load-bearing structures
Pre-dimensioning, structural concepts, structural calculations and design for load-bearing structures, foundations and excavation supports; detailed statics, structural plans and reports.
Construction surveying / GIS
Site and terrain surveys, monitoring measurements, drone surveying, digital terrain models, utility line surveys as well as GIS services and WebGIS.
Client support
Specialist advice and support in structural engineering, representation of the client’s interests, technical coaching, process support and strategic development.
BIM (Building Information Modeling)
Digital modelling with 3D, 4D and 5D models, collision and model checks, openBIM data exchange, CDE platforms and management of BIM models.
Trust & reputation

ranQ Trust Score of SIEGRIST INGENIEUR- UND PLANUNGSBÜRO AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

SIEGRIST INGENIEUR- UND PLANUNGSBÜRO AG scores 62.6 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.72.524%
  • 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.61.010%
  • 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%
SIEGRIST INGENIEUR- UND PLANUNGSBÜRO 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%
SIEGRIST INGENIEUR- UND PLANUNGSBÜRO 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%
SIEGRIST INGENIEUR- UND PLANUNGSBÜRO AG scores 54.3 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 35.54.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

SIEGRIST INGENIEUR- UND PLANUNGSBÜRO AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.6 out of 5 stars from 10 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
4.6
of 5

Aggregated from 10 reviews across all connected sources

Sources
GGoogle4.610
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Murgenthalstrasse 30
4900 Langenthal
Opening hours
Mon
07:30 - 17:00
Tue
07:30 - 17:00
Wed
07:30 - 17:00
Thu
07:30 - 17:00
Fri
07:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-108.149.652
Founded
1993 · 33 years
Last commercial register change
February 6, 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.100.06%
  • 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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