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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryReal EstateReal Estate BrokerageDiepoldsauSonnenbau Dienstleistungs AG
Sonnenbau Dienstleistungs AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Sonnenbau Dienstleistungs AG provides services in the real estate and construction sectors. Its activities include property sales, letting, management and administration, as well as property valuation, construction services and real estate investments.

AI-generated
Offering

Products & services

Industry:Real Estate Brokerage
✓ Offered4
Property Sales
Property sales with research, personal advice, valuation, market information and marketing on online marketplaces, including 360° tours and drone footage.
Property Letting
Property letting for first occupancy of new-build properties and re-letting of apartments, office and commercial space, including inspection, rent setting, viewings, credit checks, contracts and handover.
Property Management
Property management and administration for apartments, office and commercial space as well as condominium ownership, including rent collection, tenant replacement, claims handling, technical management and renovation planning.
Property Valuation
Property valuation for land, single-family homes, multi-family houses, commercial properties and special objects, with free online valuation, hedonic market value assessment and detailed reports.
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4.1/5

Sonnenbau Dienstleistungs AG

Trust & reputation

ranQ Trust Score of Sonnenbau Dienstleistungs AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 100% · As of October 2026

Sonnenbau Dienstleistungs AG scores 66.0 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.45.324%
  • 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.92.510%
  • 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%
Sonnenbau Dienstleistungs 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%
Sonnenbau Dienstleistungs 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%
Sonnenbau Dienstleistungs AG scores 45.9 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 35.68.64%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.23.34%
Qualifications+0.00

Sonnenbau Dienstleistungs AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 3.8 out of 5 stars from 37 customer reviews. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
3.8
of 5

Aggregated from 37 reviews across all connected sources

Sources
GGoogle3.837
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

July 17, 2025Media
Mit Weitblick und Wurzeln
rheintal24.ch
May 17, 2018Media
Wechsel bei Sonnenbau
tagblatt.ch

Knowledge

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Comparisons

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Location

Moosstrasse 1
9444 Diepoldsau
Opening hours
Mon
07:30 - 12:00, 13:15 - 17:15
Tue
07:30 - 12:00, 13:15 - 17:15
Wed
07:30 - 12:00, 13:15 - 17:15
Thu
07:30 - 12:00, 13:15 - 17:15
Fri
07:30 - 12:00, 13:15 - 16:15
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-100.044.446
Founded
1998 · 28 years
Last commercial register change
June 17, 2025
Employees
11 to 20
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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