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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureInterior fit-outAegertenrumbau gmbh
rumbau gmbh Logo
Verified· 3 sourcesTrust Score
Summary

About the company

rumbau gmbh works in timber construction, carpentry and joinery. It plans and carries out new builds, extensions and renovations, as well as roofing, façade and interior work, and offers construction planning, bespoke joinery and terrace construction.

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Presence

Service area

Offering

Products & services

Industry:Interior fit-out
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rumbau gmbh

Timber construction
Additions, upward extensions, element construction, timber construction planning, structural analysis, consulting and visualisation; also civil engineering, carpentry, green roofs, flat roofs, pitched roofs, multi-storey construction and timber façades.
Joinery work
Customer joinery workshop for wooden windows, wood-metal windows, entrance doors, interior doors, made-to-measure furniture, built-in wardrobes, sliding doors, shelves, stair furniture and special made-to-order items.
Interior fit-out & room design
Wall cladding, floor coverings, parquet, room acoustics, staircases, wood panelling, window sills, reveals, reclaimed-wood cladding, drywall, internal insulation and floor build-ups.
Renovation of old buildings
Renovation of old buildings including roof refurbishment, heritage conservation, thermal insulation, building surveys, interior cladding, roof coverings and façade works.
Building envelope & roof coverings
Roof insulation, underroofing, tiles, roof refurbishments, wooden shingles, timber façades, façade insulation, ventilated façades, slatted cladding and façade boarding.
Roof windows & dormers
Roof windows, dormers, window replacement, dormer balconies, prefabrication of timber elements, sheet-metal cladding and solutions for more light and space.
Floor coverings
Solid wood floors, floor strips, country-style boards, parquet, linoleum and laminate; plus floor build-ups, underfloor heating as well as oiling, sanding, sealing and refreshing.
Terrace construction
Timber terraces, wooden decks, pergolas, substructures, terrace cleaning and surface treatments for private and public outdoor areas.
Planning
Measured surveys, CAD plans, tachymeter surveys, calculations, consulting, coordination, timber construction planning, structural engineering, insulation-value and cost calculations, and tender submissions.
Trust & reputation

ranQ Trust Score of rumbau gmbh: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of November 2026

rumbau gmbh scores 62.5 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.60.724%
  • 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.40.910%
  • 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.95.08%
rumbau gmbh scores 83.0 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.55.07%
rumbau gmbh 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%
rumbau gmbh scores 4.0 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 35.4.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

rumbau gmbh reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.0 out of 5 stars from 4 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
4
of 5

Aggregated from 4 reviews across all connected sources

Sources
GGoogle44
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Oberer Kanalweg 5
2558 Aegerten
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:00
Tue
07:30 - 12:00, 13:00 - 17:00
Wed
07:30 - 12:00, 13:00 - 17:00
Thu
07:30 - 12:00, 13:00 - 17:00
Fri
07:30 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-115.069.254
Founded
2009 · 17 years
Last commercial register change
May 21, 2026
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • BEAegerten
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.
88.0
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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