What 3-plan Ag does

3-Plan AG is a privately held Swiss building technology engineering (Gebäudetechnik) firm founded in 1986 and headquartered in Winterthur. The company specializes in planning and consulting for HVAC, electrical, sanitary, cooling, fire protection, and building automation systems (HLKS+E), serving new construction and renovation projects across German-speaking Switzerland. It operates four office locations (Winterthur HQ, Kreuzlingen, St. Gallen, Zürich postal) and includes a wholly-owned subsidiary, 3-Plan Haustechnik Violka + Partner AG, which anchors its Kreuzlingen operations.

The company's service architecture is structured in three phases — Entwicklung (development and feasibility), Planung (detailed engineering), and Betrieb (operations and digital management) — supported by a BIM-based planning workflow using Revit and a Virtual Design and Construction (VDC) methodology. Differentiated digital assets include a Digital Building Management platform that stores building technology models for CAD-free visual access by owners and operators, plus a BIM Viewer and Virtual Tour tools for stakeholder communication. A VDC certification partnership with FHNW and CIFE Stanford, with CEO Daniel Bühler serving as Senior-Mentor, underpins the firm's digital construction talent pool.

The business model is project-based professional services revenue: 3-Plan participates in public tenders and architectural competitions, delivers engineering plans on project-by-project contracts, and increasingly offers ongoing operational and digital management services. Customer segments span public sector municipalities (schools, administrative buildings), real estate developers and cooperatives (residential housing, Minergie/LEED-certified projects), healthcare facilities (Universitätsspital Zürich, Klinik Sokrates, Herz-Neuro-Klinik Münsterlingen), industrial enterprises (WinGD, Spross), commercial/retail (Migros, Balenciaga, Credit Suisse real estate). Pricing is custom and not publicly disclosed. Authorized signatories are Daniel Bühler, James Beer, and Stefan van Velsen; Samuel Ess joined the Geschäftsleitung effective January 1, 2026.

Name

3-plan Ag

Legal name

3-Plan AG

Website

https://3-plan.ch

Company type

Private

Founded year

1986

Operating status

Operating

Short description

3-Plan AG is a privately held Swiss building technology engineering firm founded in 1986, headquartered in Winterthur, that plans HVAC, electrical, sanitary, and building automation systems using BIM and VDC methodology for municipalities, real estate developers, healthcare, industrial, and commercial clients across German-speaking Switzerland.

Ownership category

akta.pro rank

Product category

Building Services Engineering (HVAC/MEP Planning)

NAICS

Architectural Services (541310), Plumbing, Heating, and Air-Conditioning Contractors (238220)

SIC

Services-Computer Integrated Systems Design (7373)

akta.pro primary industry

Building Information Modeling (BIM) & Digital Design Services (BPAHAKAK)

akta.pro secondary industries

Building Automation & Controls (BAS/BMS) Contracting (IMAFALAE), Commissioning, Retro-Commissioning & Controls Tuning (BPABAGAL), Predictive/Condition-Based Maintenance (Vibration, Thermography, CBM) (BPABACAK)

Keywords

• Building technology planning
• HVAC engineering services
• BIM coordination
• Building automation design
• MEP engineering consulting

Headquarters

HQ city

Winterthur

HQ country

Switzerland

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Distribution channels1 record

Marketing channels7 records

Core offering

3-Plan AG provides building technology planning and consulting services across three core phases: Entwicklung (development/feasibility), Planung (engineering planning for heating, ventilation, cooling, sanitary, electrical, and building automation), and Betrieb (operations, optimization, and digital building management). The company uses BIM-based 3D modeling (Revit) and Virtual Design and Construction (VDC) methodology to deliver integrated multi-trade building services engineering for new construction and renovation projects in German-speaking Switzerland.

Product overview

3-Plan AG operates as a building technology engineering firm (Haustechnik) offering three core service phases: Entwicklung (development/planning), Planung (detailed engineering), and Betrieb (operations/digital management). The company specializes in building technology systems including heating, ventilation, sanitation, electrical, cooling, fire protection, and building automation. Their digital services include a BIM Viewer for 3D visualization and a Digital Building Management platform that provides digital data storage and visual online access to building information models. The company also offers specialized services in analysis, measurement, and optimization of technical building systems.

Differentiator

Problem solved

Functional benefit

Products and services

• Entwicklung (Development) Early-stage planning services for building technology projects, including feasibility studies and concept development for new construction and renovation initiatives.
• Planung (Planning) Full engineering and planning services for building technology systems including heating (Heizung), ventilation (Lüftung), sanitation (Sanitär), electrical (Elektro), cooling (Kälte), and building automation (GA/MSRL), delivered on a BIM-based 3D platform.
• Betrieb (Operations) Operational support services for technical building systems, including analysis, measurements, optimization, and digital building management to ensure continued performance and efficiency after handover.
• Digitale Bewirtschaftung (Digital Building Management) Platform-based digital management solution that makes building information models accessible for building owners and operators, featuring centralized digital data storage, visual online access without CAD software, and availability of digital model and operations instructions.
• Analysen - Messungen - Optimierungen (Analysis, Measurement and Optimization) Technical analysis, measurement, and optimization services for building systems to ensure optimal performance, energy efficiency, and lifecycle cost outcomes.
• BIM Viewer and Virtual Tour 3D BIM visualization tools and virtual building tours enabling building owners and stakeholders to experience and review building technology projects digitally without CAD software.

Named customers13 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Six partnerships are on record, tiered core and minor.

• FHNW (Fachhochschule Nordwestschweiz)coreStrategic or Co-development PartnerPartnership through VDC (Virtual Design and Construction) Certification Program. FHNW provides academic validation and certification for 3-Plan employees in digital construction methodologies. CEO Daniel Bührer serves as Senior-Mentor in the program.
• CIFE Stanford (Center for Integrated Facility Engineering)coreStrategic or Co-development PartnerCollaboration on VDC Certification Program bringing international digital construction expertise to Swiss building industry. Martin Fischer from CIFE Stanford contributes knowledge sharing and program development.
• PARK ARCHminorStrategic or Co-development PartnerArchitecture firm partner in winning competition for Stadtkaserne Frauenfeld conversion project. 3-Plan provides building technology expertise as part of the integrated project team.
• Künzli Davos AGminorStrategic or Co-development PartnerGeneral contractor (Totalunternehmer) partner in St. Moritz economically viable housing project. Joint team won overall contract competition.
• eins Architekten AGminorStrategic or Co-development PartnerArchitecture firm partner in St. Moritz housing project winning the overall contract competition alongside 3-Plan.
• KMU-Verband Winterthur und UmgebungminorOthersRegional SME association that awarded 3-Plan the KMU-MAX recognition and continues engagement through tree sponsorship programs for winners.

Scale indicators2 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• Gruner AG: Swiss engineering group covering building technology alongside structural, civil, and infrastructure disciplines. Provides direct competition for HLKS planning mandates on larger institutional and commercial projects.
• Amstein + Walthert AG: Largest Swiss engineering firm specializing in building technology (HLKS), energy and sustainability. Direct overlap with 3-Plan's core HLKS planning services, but operates at national scale with ~1,000+ staff across multiple Swiss offices and a broader services portfolio.
• Basler & Hofmann AG: Swiss engineering consultancy with strong building technology, structural and infrastructure practices. Comparable to 3-Plan in providing HLKS and building automation planning for complex institutional and commercial projects across Switzerland.
• ATP Architekten Ingenieure: Integrated design firm (architecture + building services engineering) operating across DACH with a strong BIM/digital-planning emphasis. Represents the larger-scale, digitally integrated competitor model 3-Plan is positioning against in its VDC strategy.

Direct peers

• Waldhauser + Hermann AG: Swiss HLKS engineering firm serving similar building technology planning needs for residential, commercial, and public-sector projects. Closest like-for-like peer in terms of service scope and Swiss regional engineering market positioning.
• Hefti. Hess. Martignoni AG (HHM): Swiss building services engineering (HLK) firm with a comparable regional office footprint and customer mix spanning public-sector, healthcare, and commercial developments in the German-speaking Swiss market.
• Suter Zangerle GmbH: Austrian-Swiss HLK engineering consultancy offering comparable building technology planning services. Useful regional peer for understanding pricing and competitive dynamics in the DACH market.

Regional players

• Kannewischer Ingenieurbüro AG: Swiss building services and energy engineering consultancy; comparable to 3-Plan in delivering HLKS planning for healthcare, education, and commercial projects within the Swiss market.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/3plan
• LinkedInlinkedin.com/company/3-plan-haustechnik-ag
• Instagraminstagram.com/3planag.ch
• TikToktiktok.com/@3planag

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries2 records

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 3-plan Ag