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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureOwner's representationLausanneDrees & Sommer Schweiz AG
Drees & Sommer Schweiz AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Drees & Sommer Schweiz AG provides consulting and implementation services for real estate, infrastructure and industry projects. Its services include strategy, sustainability and technical consulting, as well as project management, general planning and construction management for new builds and refurbishments.

AI-generated
Presence

Service area

Offering

Products & services

Industry:Owner's representation
✓ Offered8
Client Representation and Project Management
Central control of construction projects from early analysis through handover and use; site and market analyses, feasibility studies, and cost, schedule, quality and contract management.
Strategy and Organisation Consulting
Strategy and organisation consulting with change management, process consulting and transformation management; development of areas of action, priorities, workflows and tailored workshops and training.
Technical Advisory
Technical advisory for construction projects in all phases; technical and economic controlling, quality assurance, technical due diligence, defect tracking and warranty management.
Real Estate Solutions
Consulting for real estate over the life cycle; Transaction and Valuation, Management and Operations, Real Estate Strategy, Real Estate Consulting, Facility Management Consulting and Development Services.
Digital Services and Technologies
Digital services for the transformation of organisations and real estate; digital strategy, Digital Real Estate, data, processes and AI as well as Global IT Consulting.
Sustainability and Climate Consulting
Sustainability consulting with ESG consulting and management, zero carbon, green hydrogen, circular economy, green building, sustainable refurbishment and climate risk analysis.
Construction Management
Operational management of construction projects according to SIA 102; tendering and award, cost and schedule planning, site logistics, site supervision, quality assurance, acceptance inspections and support during the warranty phase.
General Design / EPCM
Coordination and responsibility for all design services; management of all disciplines, selection of the design team, interface coordination, cost and schedule management, and quality assurance.
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4.0/5

Drees & Sommer Schweiz AG

Trust & reputation

ranQ Trust Score of Drees & Sommer Schweiz AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 100% · As of November 2026

Drees & Sommer Schweiz AG scores 71.5 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.67.824%
  • 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.67.110%
  • 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.88.08%
Drees & Sommer Schweiz AG scores 67.7 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.50.012%
  • 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.90.07%
Drees & Sommer Schweiz AG scores 88.3 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).88.322%
Drees & Sommer Schweiz AG scores 50.0 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 35.100.04%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

Drees & Sommer Schweiz AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.4 out of 5 stars from 13 customer reviews. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.4
of 5

Aggregated from 13 reviews across all connected sources

Sources
GGoogle4.413
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

June 8, 2020Media
Arealentwicklung Universitätsspital Basel
espazium.ch

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Location

Hier entsteht die Karte
Avenue de la Rasude 5
1006 Lausanne
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Branch
UID
CHE-370.247.659
Founded
2023 · 3 years
Last commercial register change
March 18, 2025
Employees
51 to 100

Active in 1 of 26 cantons

  • VDVaud
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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