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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryReal EstateCaretaker serviceWangen B. OltenP. Sonderegger AG
P. Sonderegger AG Logo
Verified· 5 sourcesOwner confirmed
Last updatedNovember 5, 2026

Contact

Summary

About the company

P. Sonderegger AG has stood for professional cleaning and property maintenance since 1965. Now in its 3rd generation, we combine tradition with the most modern standards. Our team of more than 350 motivated employees ensures cleanliness in the cantons of SO, AG, BE, BL and LU with the motto: Clean safely. Since 1965. Whether in maintenance cleaning, building cleaning or comprehensive property maintenance services, we offer tailored solutions for corporate and private clients. Our high quality standards and regular trainings guarantee you the highest reliability and continuity. Rely on more than 60 years of experience, personal consultation and qualified specialists.

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Trust Score4.4/5

P. Sonderegger AG

Offering

Products & services

Industry:Caretaker serviceCleaning company
✓ Offered2
Cleaning
Building cleaning, construction cleaning, maintenance cleaning, office cleaning and private cleaning for businesses and households; regular cleanings, cleanings after construction projects, and supportive cleaning services in everyday life.
Property caretaking
Property maintenance, Hauswart local model, garden maintenance, waste disposal and winter services for real estate; care of indoor and outdoor areas, coverage, order and safety in winter.
Trust & reputation

ranQ Trust Score of P. Sonderegger AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 100% · As of November 2026

P. Sonderegger AG scores 68.7 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.48.924%
  • 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.95.110%
  • 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.95.08%
P. Sonderegger AG scores 95.8 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.96.07%
P. Sonderegger AG scores 95.0 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).95.022%
P. Sonderegger AG scores 32.9 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 35.65.74%
  • 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+0.15

P. Sonderegger AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 3.9 out of 5 stars from 41 customer reviews. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
3.9
of 5

Aggregated from 41 reviews across all connected sources

Sources
GGoogle3.941
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

July 27, 2023Media
«Absolut am Limit»: Reinigungsfirma Sonderegger zieht wegen Wachstums in einen Neubau
oltnertagblatt.ch
November 23, 2016Media
Generationenwechsel bei der P. Sonderegger AG
oltnertagblatt.ch
Credentials

Certifications & memberships

ISO 9001:2015
Qualitätsmanagementsystem
ISO 14001:2015
Umweltmanagementsystem
ISO 45001:2018
Managementsystem für Sicherheit und Gesundheit bei der Arbeit
Knowledge

Articles about P. Sonderegger AG

No articles have been published yet.

Comparisons

P. Sonderegger AG in comparison

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Industry comparisons are coming soon

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Contact

Location

Untere Dünnernstrasse 21
4612 Wangen B. Olten
Opening hours
Mon
07:15 - 11:45, 13:15 - 17:00
Tue
07:15 - 11:45, 13:15 - 17:00
Wed
07:15 - 11:45, 13:15 - 17:00
Thu
07:15 - 11:45, 13:15 - 17:00
Fri
07:15 - 11:45, 13:15 - 16:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-109.278.499
Founded
1965 · 61 years
Last commercial register change
March 4, 2026
Employees
101 to 500

32 km radius from Untere Dünnernstrasse 21, 4612 Wangen B. Olten

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