Amstein Walthert Basel AG

What Amstein Walthert Basel AG does

Amstein Walthert Basel AG is a Swiss engineering and consulting firm operating as part of the Amstein + Walthert Group (founded 1927), delivering multidisciplinary building services across all construction lifecycle phases — Development, Planning, Realization, and Maintenance. The group provides integrated engineering in HVAC, electrical, plumbing, fire protection, building automation, building physics, acoustics, and energy systems, with BIM/VDC methodology adopted from 2015 onward to support interdisciplinary coordination. It is one of Switzerland's largest engineering consultancies, employing approximately 1,100 people across regional offices (Zurich HQ, Basel, Bern, Chur, Frauenfeld, Geneva, Lausanne, Sion, St. Gallen, Luzern, Buchs, Baden) and a French subsidiary in Lyon.

The group's service portfolio spans engineering, sustainable building consulting (Minergie, SNBS, LEED, BREEAM, greenproperty label), facility management, and infrastructure planning through its newer A+W Infra branch. Specialized sub-brands extend the platform into adjacent areas: Alweol (energy solutions), A+W Progress, Enastra (energy consulting), icccon (real estate data management, acquired 2023), LEITpuls (electrical/automation), Reflexion, and Schnyder Ingenieure. The firm co-developed the SNBS national construction sustainability standard with the Swiss Federal Office of Energy.

Revenue is generated through project-based professional services fees, with the group fully owned by executive personnel involved in day-to-day operations — an unusual ownership structure for a firm of this scale. Clients include international organizations (UNO, WHO, ILO, IUCN), public sector and cantonal governments, hospitals, educational institutions, public transport operators, and private developers. GTM is direct enterprise sales delivered through regional offices in both German- and French-speaking Switzerland, plus France, with no reseller or partner channel distribution. Marketing is anchored in professional association membership, a monthly newsletter, sustainability campaigns, and a 2025-launched alumni community ahead of the 2027 centenary.

Name

Amstein Walthert Basel AG

Legal name

Amstein + Walthert Holding AG

Website

https://amstein-walthert.ch

Company type

Private

Founded year

1927

Operating status

Operating

Headcount range

11–50 employees

Short description

Amstein Walthert Basel AG is a Swiss engineering and consulting firm delivering multidisciplinary building services (HVAC, electrical, plumbing, fire protection, automation, energy) across all construction lifecycle phases for public sector, institutional, and private developer clients throughout Switzerland and France.

Ownership category

akta.pro rank

Product category

Building Services Engineering

NAICS

Engineering Services (541330), Architectural, Engineering, and Related Services (5413), Building Equipment Contractors (2382), Plumbing, Heating, and Air-Conditioning Contractors (238220)

SIC

Services-Engineering Services (8711), Construction - Special Trade Contractors (1700)

akta.pro primary industry

Hard Services (MEP/HVAC, Electrical, Plumbing) (BPABAAAA)

akta.pro secondary industries

Security, Safety & Fire/Life Safety Management (BPABAAAE), Energy Services (Retrofits/Commissioning/Testing & Balancing) (IMAIABAI), Fire & Smoke Dampers / Firestopping / Passive Fire Protection Services (BPABAHAE), HVAC & Industrial Ventilation (Chillers, AHUs, Exhaust, Filtration) (EUAEAFAE), O&M, Upgrades & Refurbishment of T&D Assets (Reconductoring, Rebuilds) (IMAFAHAM)

Keywords

• Building services engineering
• HVAC engineering consulting
• Sustainable construction consulting
• Fire protection planning
• Energy consulting services

Headquarters

HQ city

Basel

HQ country

Switzerland

HQ region

Europe

Offices8 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering and Consulting Services: Project-based engineering and consulting fees for building services across all construction phases. Revenue derived from HVAC, electrical, plumbing, fire protection, building physics, energy systems, and sustainability consulting engagements for property owners, developers, and public institutions.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Amstein + Walthert provides integrated building services engineering and consulting across HVAC, electrical, plumbing, fire protection, building automation, building physics, energy systems, and sustainable construction. Services span the entire construction lifecycle — Development, Planning, Realization, and Maintenance — for institutional property owners, developers, public sector clients, and international organizations. The firm also delivers dedicated infrastructure engineering (A+W Infra), safety engineering (A+W Sicherheit), and data management (icccon) services through specialized sub-brands.

Product overview

Amstein + Walthert is a Swiss engineering and consulting group offering integrated building services engineering across multiple disciplines. The company operates as a platform of interconnected service areas including HVAC/electrical/plumbing engineering, building automation, fire protection, building physics, BIM/VDC coordination, energy consulting, facility management, and sustainable building certification. The group provides services through regional offices (A+W Basel, Zurich, Geneva, Lausanne, Bern, St. Gallen, Luzern, and others) plus specialized subsidiaries like A+W Infra (infrastructure), A+W Sicherheit (safety), and Alweol, icccon, LEITpuls, Reflexion (group companies). Projects span across construction phases from development and planning through realization and maintenance.

Differentiator

Problem solved

Functional benefit

Brands

• Alweol: Energy solutions subsidiary
• A+W Progress
• Enastra
• icccon
• LEITpuls
• Reflexion
• Schnyder Ingenieure

Products and services

• Building Services Engineering (HVAC, Electrical, Plumbing) Comprehensive engineering services for heating, ventilation, air conditioning, plumbing, and electrical systems across development, planning, realization, and maintenance phases, delivered to property owners, developers, and public sector clients across Switzerland.
• Building Automation (MCR) Building automation systems including Monitoring, Control, and Regulation (MCR) for intelligent building management and operational optimization.
• Fire Protection Planning Fire protection planning and consulting services ensuring compliance with Swiss safety regulations, delivered through A+W Sicherheit AG in Buchs and integrated across A+W regional offices.
• Building Physics and Acoustics Building physics and acoustics consulting for sustainable construction, supporting environmental certifications and occupant comfort.
• Energy Consulting Energy consulting services including technical and energy audits, energy controlling, and energy performance contracting for buildings and facilities.
• Sustainable Building Consulting and Certification Sustainability consulting and certification support for Minergie, SNBS, LEED, BREEAM, and other green building standards, including lifecycle optimization and carbon reduction strategies.
• BIM/VDC Coordination Building Information Modeling and Virtual Design and Construction coordination services for interdisciplinary spatial planning and project coordination.
• Facility Management Consulting Building operation and maintenance management consulting ensuring sustainable and efficient property utilization over the entire building lifecycle.
• A+W Infra Infrastructure Engineering Infrastructure planning services for complex electrical infrastructure projects in public and regional transport, including project management, operator-specific planning, and replacement investment planning.
• A+W Sicherheit Safety Engineering Specialized safety engineering services for buildings and infrastructure, operating from the Buchs office within the Amstein + Walthert Group.
• Data Management for Real Estate (icccon) Data management services for building projects and operational real estate data, delivered through the icccon sub-brand within the Amstein + Walthert Group.
• greenproperty Quality Label Sustainability quality label co-developed with Credit Suisse for evaluating the sustainability of buildings across construction and operation standards.
• SNBS (Swiss Sustainable Construction Standard) National Swiss sustainable construction standard co-developed with the Swiss Federal Office of Energy, providing criteria for economic, energy-efficient, and low-CO2 buildings.

Quantifiable outcome

• First Minergie P certified residential project of its scale in Switzerland (Eulachhof complex, 150 housing units)
• +1 more outcomes

Named customers8 records

Segments3 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration9 records

Feature4 records

Partnerships

One partnership is on record.

• IUCN (International Union for Conservation of Nature)coreStrategic or Co-development PartnerA+W Geneva delivered engineering services for IUCN's Geneva headquarters, which was awarded multiple international sustainability certifications. This project was described as a 'key project' that established A+W Geneva as market leader in sustainable construction.

Scale indicators4 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Burckhardt+Partner AG: Swiss architecture and engineering firm covering building services, sustainability, and construction phases — overlapping with A+W's planning and realization mandate.
• Waldhauser + Hermann AG: Swiss engineering firm with MEP/HVAC, building physics, and sustainability consulting services — directly comparable to A+W's Lausanne-region offering and small enough to be a regional M&A candidate.
• CSD Ingenieure AG: Swiss engineering group delivering building services, energy, and infrastructure consulting with comparable full-lifecycle coverage and multi-office footprint across Switzerland.
• Gruner AG: Swiss-headquartered engineering firm offering building services, energy, and infrastructure consulting across German-speaking Switzerland. Closest direct peer to Amstein + Walthert by geography, scale, and full-lifecycle MEP/buildings offering.
• Basler & Hofmann AG: Swiss engineering consultancy providing building services, infrastructure, and environmental engineering, with comparable multidisciplinary coverage and strong institutional client base similar to A+W.

Broad incumbents

• WSP Global Inc. Global engineering consultancy with property and buildings services; competes for large institutional and infrastructure mandates in Switzerland and across Europe.
• AFRY AB: Nordic-headquartered engineering and design consultancy with European building services and energy operations, increasingly active in Switzerland.
• Sweco AB: Large Nordic engineering consultancy with growing European building services practice; competes for multinational mandates and is acquisitive in Switzerland.
• Ramboll Group A/S: International engineering, design, and consulting firm with strong sustainability and building services practices that overlap with A+W's energy and Minergie/SNBS focus.

Regional players

• HKG Engineering AG: Eastern Swiss (St. Gallen area) engineering firm covering HVAC, electrical, and plumbing services — directly comparable to A+W's St. Gallen office offering.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/AmsteinWalthert
• LinkedInlinkedin.com/company/amstein-walthert
• YouTubeyoutube.com/@amsteinwalthert

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries20 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 Amstein Walthert Basel AG