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DirectoryReal EstateProperty managementLucerneTreuhand Willimann AG
Treuhand Willimann AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Treuhand Willimann AG provides fiduciary and tax services for businesses, start-ups and private individuals. Its services include bookkeeping, payroll and personnel administration, annual accounts, business start-up advice and property management.

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Service area

Offering

Products & services

Industry:Property management
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Treuhand Willimann AG

Property management
Property management for residential properties, commercial real estate and mixed-use assets; tenant administration, rent collection, service charge statements, maintenance management, renovation and refurbishment support.
SME support
Trust/accounting services for small and medium-sized enterprises; bookkeeping and annual financial statements, tax advice and optimisation, business consulting, payroll accounting, and support with financing requests.
Tax advisory
Tax planning, tax optimisation and tax representation for businesses and private individuals; restructuring, personal taxes, corporate taxes, real estate taxes and international tax advisory.
Advice for private individuals
Tax returns, tax planning, real estate advice and estate planning for employees, self-employed persons, retirees, property owners and wealthy private individuals.
Business formation
Support with business formation from legal form advice through incorporation processing to registration in the commercial register; tax structuring, follow-up support and setting up accounting.
FMH Services
Trust services for doctors' practices and medical facilities; practice set-ups and takeovers, financial bookkeeping, payroll and personnel administration, annual accounts, tax returns and practice sales.
Trust & reputation

ranQ Trust Score of Treuhand Willimann AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of November 2026

Treuhand Willimann AG scores 62.0 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.70.824%
  • 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.27.910%
  • 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.78.08%
Treuhand Willimann 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%
Treuhand Willimann AG scores 86.7 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).86.722%
Treuhand Willimann AG scores 60.0 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 35.60.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Treuhand Willimann AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

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Comparisons

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Location

Töpferstrasse 5
6004 Lucerne
Opening hours
Mon
08:00 - 12:00, 13:30 - 16:30
Tue
08:00 - 12:00, 13:30 - 16:30
Wed
08:00 - 12:00, 13:30 - 16:30
Thu
08:00 - 12:00, 13:30 - 16:30
Fri
08:00 - 12:00, 13:30 - 16:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-111.735.514
Founded
2004 · 22 years
Last commercial register change
November 20, 2025
Employees
11 to 20

Active in 1 of 26 cantons

  • LULucerne
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.70.03%
    • Full methodology

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