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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureConstruction & Project ManagementWollerauB-S-S Baumanagement AG
B-S-S Baumanagement AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The company provides construction management services, including project planning, cost planning, tendering and awarding, scheduling, construction management and cost management, as well as commissioning. It supports clients in the implementation of construction projects and offers consulting, project assistance and administration.

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Offering

Products & services

Industry:Construction & Project Management
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4.1/5

B-S-S Baumanagement AG

✓ Offered11
Construction supervision
Construction supervision for residential building, major conversions, industrial and service buildings; local site supervision, cost control, scheduling, tendering and contract award.
Construction management
Construction management for new builds, conversions and renovations; cost planning, scheduling, tendering, contract award, construction supervision, commissioning and completion.
Project management
Project management for construction projects with overall leadership, coordination of designers and contractors, cost and schedule control, and support up to handover.
Planning and execution planning
Feasibility studies, design, building permit submission drawings, execution planning and design management starting from the approved project; on request, integrated into the overall mandate.
Cost planning and cost estimates
Cost estimates, detailed cost planning, cost appraisal, cost control and plausibility checking of construction costs from competitions or projects.
Tendering and contract award
Preparation of specifications/bills of quantities, cost breakdowns, invitations to tender, submissions and contract awards for new-build, conversion and renovation projects.
Schedule planning and schedule monitoring
Preparation of detailed schedules, schedule programmes and schedule monitoring to control construction processes and execution phases.
Owner advisory
Advice, contract review, expert reports and construction support; assistance with feasibility issues, selection of architect and project review prior to contract signing.
Site supervision
Site supervision for office fit-outs, residential buildings, school buildings, public buildings and tenant fit-outs; on-site coordination and ongoing inspections.
Construction accounting and project administration
Construction accounting, administrative support in tendering and works contract management, and project administration during construction execution.
Hazardous material, demolition and disposal concepts
Demolition and disposal concepts, deconstruction coordination, and remediation of contaminated sites and hazardous substance assessments as part of conversion and replacement new-build projects.
Trust & reputation

ranQ Trust Score of B-S-S Baumanagement AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

B-S-S Baumanagement AG has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
B-S-S Baumanagement AG scores 93.9 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.82.07%
B-S-S Baumanagement 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%
B-S-S Baumanagement AG scores 28.6 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 35.28.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

B-S-S Baumanagement AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

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Location

Roosstrasse 51
8832 Wollerau
Opening hours
Mon
07:00 - 12:00, 13:00 - 18:00
Tue
07:00 - 12:00, 13:00 - 18:00
Wed
07:00 - 12:00, 13:00 - 18:00
Thu
07:00 - 12:00, 13:00 - 18:00
Fri
07:00 - 12:00, 13:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-115.795.969
Founded
2010 · 16 years
Last commercial register change
June 25, 2020
Employees
21 to 50
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.85.03%
    • Full methodology

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