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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringBaselC1 Christian Lang Consulting Basel
C1 Christian Lang Consulting Basel Logo
Verified· 3 sourcesTrust Score
Summary

About the company

C1 Christian Lang Consulting Basel provides architectural and planning consulting and supports construction projects. The company advises clients such as building owners, authorities and developers on project organisation, planning processes, building regulations, heritage protection and expert reports.

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Products & services

Industry:Technical Consulting & EngineeringArchitecture Firms
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3.5/5

C1 Christian Lang Consulting Basel

✓ Offered5
Architecture Consulting and Planning Support
Consulting, strategy development and support for construction projects; project organisation, planning processes, selection of architects and specialist planners, plus support in building processes and competitions.
Construction and Planning Law Consulting
Consulting on building legislation, authority procedures, spatial and land-use planning, zoning plans, watercourse areas, SIA standards and technical standards.
Heritage Conservation and Subsidy Consulting
Support with building history and heritage conservation matters, heritage protection, protection agreements, inventories, listing procedures and subsidy matters.
Expert Opinions and Appraisal Support
Organisation and support of expert opinions and appraisals in building construction, plus specialist support in quality-improving procedures.
Representation in Architectural Competitions
Representation in quality-improving procedures and architectural competitions; support in selection and competition processes for clients and institutions.
Trust & reputation

ranQ Trust Score of C1 Christian Lang Consulting Basel: 3.5 out of 5.0

Trust Score3.5/ 5.0

Solid

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Data basis 58% · As of October 2026

C1 Christian Lang Consulting Basel 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.
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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%
C1 Christian Lang Consulting Basel scores 46.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.25.012%
  • 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%
C1 Christian Lang Consulting Basel scores 85.0 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).85.022%
C1 Christian Lang Consulting Basel scores 11.5 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.22.94%
  • 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

C1 Christian Lang Consulting Basel reaches a ranQ Trust Score of 3.5 out of 5.0 — rated «Solid». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 58%, 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.

Press

Media

August 2, 2025Media
Basler Architekt Christian Lang: «Das erinnert mich an Hollywood»
bzbasel.ch

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Location

Steinenring 23
4051 Basel

At a glance

Legal form
Sole proprietorship
UID
CHE-186.372.536
Founded
2025 · 1 year
Last commercial register change
September 15, 2025
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.67.06%
  • 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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