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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil Engineering FirmsBülachTantanini & Partner AG Bauingenieure und Planer
Tantanini & Partner AG Bauingenieure und Planer Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Tantanini & Partner is an engineering company specializing in the planning, consulting and execution of construction projects in the fields of civil and structural engineering. The core activities include: * Structural engineering: static assessment and supervision of renovation projects, planning of hall structures, roof constructions and retaining structures * Civil engineering: design and construction management of civil engineering projects, such as landfills, water management systems and special foundations * Building surveying: surveying of buildings, terrain modeling and volume calculations * Owner consulting: consulting of building owners in planning, construction and financial matters * Landfill construction: design and construction management of landfills of all types, including associated infrastructure facilities * Water engineering projects: design and construction management of water engineering projects, such as spring catchments, water reservoirs and flowing waters The company thus offers a comprehensive range of services in the field of construction and positions itself as a competent partner for building owners and other stakeholders in the construction industry.

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Tantanini & Partner AG Bauingenieure und Planer

Offering

Products & services

Industry:Civil Engineering FirmsConstruction & Project Management
✓ Offered5
Structural engineering for buildings
Structural analysis and statics for commercial buildings, multi-family and single-family houses as well as special structures; excavation pits and excavation support, conversions and renovations, timber and steel construction, special foundations.
Civil engineering infrastructure
Traffic facilities and road construction, wastewater systems, water supply, utility lines, property drainage and water engineering projects including project and construction management, as well as renovations and concepts.
Landfill construction and recycling
Concepts and preliminary studies for new landfill capacity, design and construction management of landfills in accordance with the VVEA, quality assurance, documentation and circular-economy facilities.
Client advisory services
Comprehensive or partial advisory services in planning, construction and financial matters; support in case of damage, structural checks, seismic safety, solution and remediation concepts.
Construction surveying
Height surveys and stake-outs for building applications, construction reference lines and earthworks; terrain models, volume calculations, digital quantity take-off as well as control and deformation measurements.
Trust & reputation

ranQ Trust Score of Tantanini & Partner AG Bauingenieure und Planer: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Tantanini & Partner AG Bauingenieure und Planer scores 52.2 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.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%
Tantanini & Partner AG Bauingenieure und Planer scores 85.5 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%
Tantanini & Partner AG Bauingenieure und Planer 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%
Tantanini & Partner AG Bauingenieure und Planer scores 6.3 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 35.6.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Tantanini & Partner AG Bauingenieure und Planer reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 4.3 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
4.3
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle4.33
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Feldstrasse 80
8180 Bülach

At a glance

Legal form
Corporation
UID
CHE-106.942.355
Founded
1998 · 28 years
Last commercial register change
August 31, 2026
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.100.06%
  • 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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