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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryAssociations & Interest GroupsNGOs & NPOsSissachKarl und Emma Sonntag-Buser-Stiftung
Karl und Emma Sonntag-Buser-Stiftung Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Karl und Emma Sonntag-Buser-Stiftung provides age-appropriate housing and supports needy older people through rent reductions. It operates a mixed-generation settlement with single-family homes and apartments, subsidises rents partly from ground-lease income, and organises communal activities and on-site services such as a café, physiotherapy and domestic help.

AI-generated
Offering

Products & services

Industry:NGOs & NPOs
✓ Offered5
Age-appropriate apartments
Age-appropriate apartments with 2-, 3- and 4-room units; a total of 25 apartments for independent living in old age in Sissach.
Independent living in old age
Housing offering for older people in a mixed residential area in Sissach; independent living in one's own apartment with age-appropriate and supported living options.
Community living and togetherness
Independent living in one's own apartment with the benefits of a vibrant community; shared spaces, encounters and everyday life together.
Shared events and meeting opportunities
Annual lunch at the restaurant, outing by minibus, New Year's apéro, as well as Jass afternoons and film screenings at the Zytglogge-Kaffi.
Neighbourly help and everyday support
Cleaning assistance arranged as needed, a physiotherapy practice available on site and a caretaker in the residential area for support in everyday life.
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4.1/5

Karl und Emma Sonntag-Buser-Stiftung

Trust & reputation

ranQ Trust Score of Karl und Emma Sonntag-Buser-Stiftung: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Karl und Emma Sonntag-Buser-Stiftung 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%
Karl und Emma Sonntag-Buser-Stiftung scores 84.9 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.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.55.07%
Karl und Emma Sonntag-Buser-Stiftung scores 83.3 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).83.322%
Karl und Emma Sonntag-Buser-Stiftung scores 1.4 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 35.1.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Karl und Emma Sonntag-Buser-Stiftung 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.

Knowledge

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Location

Lindenweg 1
4450 Sissach

At a glance

Legal form
Foundation
UID
CHE-114.122.733
Founded
1994 · 32 years
Last commercial register change
May 7, 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.97.06%
  • 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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