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Fact Sheet Lenz Treuhand AG

Core Company Information
Company Name Lenz Treuhand AG
UID CHE-113.916.280
Alternative / previous Names -
Domicile Zürich
Canton ZH
Legal Form Limited corporation
Inscription Date 08.11.2007
Takeovers: Frauenknecht Treuhand GmbH (CHE-257.284.037), per 07.11.2024
Treuhand Peter Lenz (CHE-107.931.779), per 14.12.2016
FAOA Information
FAOA ID 502033
RAB Permission licensed audit expert
FAOA License active (since 13.12.2007)
Link to FAOA website View auditor profile at FAOA
Branch offices (1) Lenz Treuhand AG (CHE-446.895.746) in Zürich (ZH)
Membership in Associations TREUHAND|SUISSE
Number of auditors with permission 4  (8.00 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 5.9 years (max.: 20.3 years)

Total number of statutory audit clients: 32 (Ranked #177 in Switzerland)

Change in number of audit engagements: +3 (since 31.12.2025), +3 (over the last 12 months)

Details regarding the distribution of the audit engagements across legal forms and cantons are depicted in the table below.

  BL GR LU SG UR VD ZG ZH ∑
Limited corporation 1 1 1 7   1 1 13 25
Limited liability company       1       3 4
Foundation       1 1     1 3
∑ 1 1 1 9 1 1 1 17 32

This audit firm is recorded as statutory auditor for 4 deleted entities. These are not included in the table above.

Display client list

Audit Engagements by Branch Office

The 32 statutory audits are performed by the branch offices as indicated in the table below.

  BL GR LU SG UR VD ZG ZH ∑
Zürich       3     1 6 10
Zürich 1 1 1 6 1 1   11 22
∑ 1 1 1 9 1 1 1 17 32

Show client list for Zürich, Zürich.

Latest audit engagements
These are this auditor's latest audit engagements.
 
Client Name Client UID Domicile Start Date Type of switch Auditor Branch
Arosa by Night AG CHE-250.627.691 Arosa 02.09.2026 First auditor Zürich
brinergarten ag CHE-110.090.092 Wädenswil 10.04.2026 First auditor Zürich
WRH Immobilien AG CHE-330.500.220 Hinwil 20.03.2026 Auditor switch Zürich
AGS-Stiftung CHE-114.059.750 Hinwil 12.03.2026 Auditor switch Zürich
RomandieFlor SA CHE-113.297.991 Denges 03.02.2026 Auditor switch Zürich
Discontinued audit engagements
The following audit engagements were lost recently, either to a competitor, due to auditor resignation or due to an opting out.
 
Client Name Client UID Domicile End Date Reason Auditor Branch
Option 4.0 AG CHE-454.121.279 Winterthur 08.07.2026 Auditor switch Zürich
AGS-Stiftung CHE-114.059.750 Hinwil 21.04.2026 Auditor switch Zürich
FTK Immobilien AG CHE-231.863.216 Kaltbrunn 22.10.2025 Auditor switch Zürich
Federtechnik Group AG CHE-107.286.080 Kaltbrunn 08.10.2025 Auditor switch Zürich
Federtechnik Kaltbrunn AG CHE-499.904.645 Kaltbrunn 08.10.2025 Auditor switch Zürich