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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureConstruction & Project ManagementRainVIVAN AG
VIVAN AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of SmartSmallHouse AG is the planning, design and realization of wooden houses and GreenVillages, particularly in the area of healthy living. The company offers services such as feasibility studies, design and realization of houses and plots, and supports customers in financing and building their own homes. Additionally, it provides online workshops and consulting services for project and land investors.

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Offering

Products & services

Industry:Construction & Project Management
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4.0/5

VIVAN AG

10
Turnkey timber house
Turnkey, preconfigured timber house, ready to move in without construction stress; includes the shell, interior fit-out, kitchen, sanitary facilities, electrical work, lighting concept, SmartHome, photovoltaic system and handover.
Upgrade house PLUS
Fit-out house in a partly finished state with building envelope, plans and fit-out specifications; interior fit-out according to your preferences yourself, with professionals or in individual service areas across Europe.
Feasibility study, planning & implementation
Feasibility study, planning and implementation of construction projects; quick analysis, site and budget review, preliminary project, construction project, approval process, detailed planning and commissioning.
Prefabricated houses / house types
Prefabricated houses in the types TinyGreen, SmallGreen, MediumGreen and ModularGreen; different sizes and usage concepts for living, families, holiday resorts or flexible projects.
Online workshop
Online workshop for getting started in building, focusing on house, plot and prices; serves as an initial orientation before a construction project.
Healthy living
Concept for healthy living with building-biological criteria, sustainable materials, energy efficiency, harmonious floor plans and Vastu principles.
Vastu
Vastu-oriented floor plans, harmonising geometries and related ceremonies, as well as interior architecture consulting for the house project.
Roofit.Solar
Building-integrated, weatherproof photovoltaic solution for the houses; also mentioned on the website for roof renovations and new builds in Switzerland.
Vastu ceremonies
Calculation of auspicious times for groundbreaking, laying the foundation stone and moving into the house; including ceremony items and conducting the ceremonies.
Vastu interior design
Consulting for Vastu-oriented interior design with fixed built-ins, furnishing, lighting, plants, colour consulting and a concept for fitters and painters.
Trust & reputation

ranQ Trust Score of VIVAN AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

VIVAN AG scores 54.8 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.69.624%
  • 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.35.310%
  • 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.35.08%
VIVAN AG scores 83.4 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.79.212%
  • 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.82.07%
VIVAN AG scores 83.3 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).83.322%
VIVAN AG scores 74.3 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 35.74.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

VIVAN AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.7 out of 5 stars from 3 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
4.7
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle4.73
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Niderhölzli 19
6026 Rain
Opening hours
Mon
08:30 - 12:00, 13:30 - 17:30
Tue
08:30 - 12:00, 13:30 - 17:30
Wed
08:30 - 12:00, 13:30 - 17:30
Thu
08:30 - 17:30
Fri
08:30 - 12:00, 13:30 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-158.984.504
Founded
2018 · 8 years
Last commercial register change
May 6, 2026
Employees
21 to 50
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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