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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionWattwilSlongo Management AG
Slongo Management AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Slongo AG is a construction company that carries out building, civil engineering and road construction projects, offering services such as renovations, industrial construction, water engineering and site works.

AI-generated
Offering

Products & services

Industry:Building Construction
✓ Offered
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4.3/5

Slongo Management AG

9
Building construction
Building construction for residential, industrial, office and commercial projects; including major projects and smaller building developments.
Civil engineering
Civil engineering with sewer systems, utility lines, stream diversions, daylighting, forecourts and excavation works.
Road construction
Road construction from subbase to asphalt, natural stone or concrete surfacing, including finishes and drainage.
Renovations and refurbishments
Renovation projects for interior and exterior areas, demolition works and restoration of building fabric for residential, industrial and office buildings.
Industrial construction
Industrial construction for complex and large projects such as warehouse halls, extension buildings, cold storage facilities, car parks and new hotel buildings.
Water engineering
Water engineering with flood protection, stream corrections, culverts and ponds and biotopes.
Public buildings
Public buildings for sports halls, fire brigade workshop yards and new barracks buildings.
Client works
Client works in building construction and civil engineering, including resurfacing, outdoor works, sewer connections, utility lines, kitchen conversions and façade refurbishments.
Outdoor works
Outdoor works for parking lots, forecourts, hiking paths, sidewalks and road terminations.
Trust & reputation

ranQ Trust Score of Slongo Management AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Slongo Management AG scores 68.5 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.67.924%
  • 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.68.910%
  • 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.70.08%
Slongo Management AG scores 94.3 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.90.07%
Slongo Management AG scores 85.0 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).85.022%
Slongo Management AG scores 51.4 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 35.51.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Slongo Management AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.4 out of 5 stars from 14 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
4.4
of 5

Aggregated from 14 reviews across all connected sources

Sources
GGoogle4.414
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Bleikenstrasse 56
9630 Wattwil
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.575.863
Founded
2000 · 26 years
Last commercial register change
July 29, 2026
Employees
51 to 100
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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