Sieber Cassina + Partner

What Sieber Cassina + Partner does

Sieber Cassina + Partner AG (SC+P AG) is a privately held Swiss Aktiengesellschaft founded in 1980 that provides specialized consulting services in geology, hydrogeology, contaminated-site assessment, landfill planning, environmental risk analysis, and construction-site engineering. The firm is organized around five integrated service lines — Umwelt/Risikoanalysen, Altlasten/Deponieplanung, Geologie/Hydrogeologie, Baugrund/Tiefbau, and Bauleitungen — and operates from five offices across Switzerland: Bern (headquarters), Olten, Wollerau, Zürich Altstetten, and Winterthur. Its client base spans construction managers, property owners, planning companies, construction firms, real estate companies, and public-sector entities, with documented anchor engagements for the federal roads office ASTRA and the Limmattalbahn regional rail project.

The firm's core technology assets include innovative geological 3D modeling for complex tunnel planning, demonstrated on the Färberhüslitunnel, and standardized Pauschalangebote (flat-rate service packages) for excavation pit design and Type A/B landfill site assessments under the Swiss VVEA framework. The firm holds dual ISO 9001:2015 (quality management) and ISO 14001:2015 (environmental management) certification, and team members carry niche credentials such as the Bodenkundliche Baubegleiterin BGS (soil-science construction supervision) designation issued in cooperation with cantonal authorities and the Federal Office for the Environment (BAFU).

SC+P's business model is a project-based professional services model with direct client engagement as the primary go-to-market motion. Revenue is generated through bespoke consulting fees, project-based construction management, and increasingly through productized flat-rate packages, with no public pricing, no API or software product, and no third-party distribution channels. Marketing is conducted through LinkedIn and direct client relationships rather than digital demand generation. The company shows no evidence of external institutional ownership, venture capital, or public listing.

Name

Sieber Cassina + Partner

Legal name

Sieber Cassina + Partner AG

Website

https://scpag.ch

Company type

Private

Founded year

1980

Operating status

Operating

Headcount range

11–50 employees

Short description

Sieber Cassina + Partner AG is a privately held Swiss environmental and geological consulting firm, founded 1980, serving construction, real estate, and public-sector clients from five offices in Switzerland with services spanning contaminated-site assessment, tunnel planning, and construction engineering.

Ownership category

akta.pro rank

Headquarters

HQ city

Zürich

HQ country

Switzerland

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Environmental Consulting Services: Professional consulting services including environmental impact assessments, risk analyses, contaminated sites evaluation, geology, hydrogeology, and construction site management
2. Fixed-Price Project Services: Pauschalangebote - standardized flat-rate concepts for excavation closures and landfill site assessments delivered to construction managers, property owners, planning companies, construction companies, and real estate firms

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Sieber Cassina + Partner AG is a Swiss consulting firm specializing in geology, hydrogeology, and environmental services. The company delivers environmental risk analyses, contaminated site and landfill planning, geotechnical and civil engineering consulting, construction management, and tunnel planning using 3D models. Founded in 1980, SC+P serves construction managers, property owners, planning companies, real estate firms, and government agencies across Switzerland from offices in Bern, Olten, Wollerau, Zürich, and Winterthur.

Product overview

Sieber Cassina + Partner AG is a Swiss environmental engineering and geology consulting firm offering specialized professional services across multiple disciplines. The company operates as a unified consulting practice organized into five interconnected service areas: environmental services and risk analysis, contaminated sites and landfill planning, geology and hydrogeology, construction ground and civil engineering, and construction management. Key offerings include tunnel planning with 3D geological models, standardized flat-rate offerings for excavation pit design and landfill site assessments, and environmental compliance consulting. The firm holds dual certification under ISO 9001:2015 for quality management and ISO 14001:2015 for environmental management, serving clients across five Swiss offices in Bern, Olten, Wollerau, Zürich, and Winterthur.

Differentiator

Problem solved

Functional benefit

Products and services

• Environmental Risk Analyses
• Contaminated Sites and Landfill Planning
• Geology and Hydrogeology Services
• Construction Ground and Civil Engineering Consulting
• Construction Management
• Tunnel Planning with 3D Models
• Flat-Rate Consulting Packages

Named customers2 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Three partnerships are on record, tiered minor.

• Stiftung Landschaft und Kies (KSE Bern)minorStrategic or Co-development Partner · 1 September 2022Collaboration on environmental conservation projects including ecological area management and invasive species removal at the Walliswil gravel pit. SC+P has completed multiple planning and environmental contracts for the gravel pit and building materials park.
• Schweizer SalinenminorOthers · 1 January 2021Swiss Salines - visited during 2025 summer team event in Basel.
• Bodenkundliche Gesellschaft der Schweiz (BGS)minorStrategic or Co-development PartnerSwiss soil science society that develops certifications including the BBB-BGS (Bodenkundliche Baubegleiterin) in cooperation with cantonal soil protection authorities, construction experts, and BAFU. SC+P team members can obtain BBB-BGS recognition through this partnership.

Scale indicators2 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• Geotest AG: Swiss geo-environmental and material testing firm that competes directly with SC+P on geotechnical investigations, environmental site assessments, and construction ground studies across Switzerland. Highly comparable specialty boutique with overlapping service lines.
• Dr. Heinrich Jäckli AG: Swiss specialist consultancy in hydrogeology, geology, and environmental engineering. Direct competitor for groundwater, contaminated sites, and geological consulting mandates that sit in the same Swiss regulatory frame as SC+P.
• Kempter + Partner AG: Swiss geotechnical and environmental engineering boutique focused on foundation and excavation consulting. Closely comparable in size and specialty, serving the same Swiss property developers, planners, and contractors.
• Holinger AG: Swiss engineering consultancy delivering environmental, geotechnical, and infrastructure services at greater scale than SC+P. Overlaps on contaminated sites, water/groundwater, and construction-phase environmental consulting.
• CSD Ingenieure AG: Swiss consulting engineering firm offering environment, geology, and civil engineering services. Comparable client base in construction, public sector, and developers across Switzerland.
• EBP Schweiz AG: Swiss consulting engineering firm with environment, risk, and infrastructure planning practices. Comparable Swiss client base in federal/cantonal agencies and private developers.

Broad incumbents

• Basler & Hofmann AG: Large Swiss engineering and planning firm with much broader capabilities than SC+P (structural, transport, environment, energy). Competes on multi-disciplinary project mandates where SC+P offers niche geo-environmental depth.
• AFRY (formerly Pöyry / ÅF): European engineering and design powerhouse with environmental, geotechnical, and infrastructure consulting capabilities and an active Swiss presence. Competes for larger, multi-disciplinary Swiss infrastructure engagements.

Emerging players

• Terradata AG: Smaller Swiss geo-environmental specialist working in contaminated site management, geology, and environmental due diligence. Sits in the same niche as SC+P with overlapping technical service lines.

Regional players

• Wälli AG Ingenieure: Regional Swiss engineering firm operating out of Eastern Switzerland (St. Gallen, Winterthur region) with geotechnical, environmental, and civil engineering services. Geographic overlap with SC+P's newer Winterthur branch.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/sieber-cassina-partner-ag

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sieber Cassina + Partner