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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsZumholzmäder + luder architekten ag
mäder + luder architekten ag Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company 'Mäder + Luder Architekten AG' is an architectural firm specializing in the planning, design and construction management of all types of high-rise buildings. The core activities include: Architecture and planning of single-family homes, rental and condominium apartments, conversions, renovations, renewals, renovations, public buildings and agricultural buildings; Preparation of building appraisals and financing plans; Construction management and accompaniment of construction projects; Creation of fire protection concepts. The company emphasizes cost-conscious, healthy and tailored construction with the highest quality of life.

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Products & services

Industry:Architecture FirmsReal Estate Brokerage
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3.8/5

mäder + luder architekten ag

✓ Offered4
Architecture
Cost-conscious design, planning and construction of customised buildings of all types; projects for single-family homes, residential buildings, public buildings, conversions and renovations.
Landscape architecture
Open-space and garden planning for private, public and commercial clients; customised planting concepts, sustainable open-space design as well as comprehensive planning and project support.
3D building surveying
3D laser scanning of buildings, rooms and plots; creation of 2D and 3D drawings, CAD and point-cloud models, as well as existing-condition, floor-plan and façade drawings.
Real-estate brokerage
Listings for purchase and rental properties as well as marketing of building plots with project documentation and condominiums within our own real-estate activities.
Trust & reputation

ranQ Trust Score of mäder + luder architekten ag: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

mäder + luder architekten ag scores 56.4 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.65.024%
  • 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.52.910%
  • 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.35.08%
mäder + luder architekten ag scores 70.4 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.64.612%
  • 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%
mäder + luder architekten 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%
mäder + luder architekten ag scores 28.6 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 35.28.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

mäder + luder architekten ag reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 4.3 out of 5 stars from 7 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
4.3
of 5

Aggregated from 7 reviews across all connected sources

Sources
GGoogle4.37
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Hauptstrasse 15
1719 Zumholz
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 - 16:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-439.398.371
Founded
2021 · 5 years
Last commercial register change
July 28, 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.
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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