What Grünenfelder & Lorenz does

Grünenfelder & Lorenz AG is an independent Swiss engineering consultancy headquartered at Vadianstrasse 35, 9000 St. Gallen, providing structural engineering (Hochbau), civil engineering (Tiefbau), BIM / digital construction, and specialized services including heritage restoration, hydraulic engineering, ecological works, and landslide remediation. Founded in 1934 and operating with between 11 and 50 employees, the firm serves public-sector clients such as Swiss Federal Railways (SBB), Appenzeller Bahnen, and municipalities including St. Gallen, Gossau, and Goldach, alongside private-sector clients across food manufacturing (Hügli Nährmittel), banking (Raiffeisen), hospitality (Radisson Blu), and developer-led residential projects.

The firm's technology stack centers on Building Information Modeling: it executes full 3D modeling, BIM2Field implementation for field execution, coordination and collision control via Dalux and BIMcollab, complete formwork and 3D reinforcement detailing with prefabricated product ordering, and live site monitoring via LiveCam and CraneCam. These capabilities are applied across current mandates such as the 207-apartment Lindental St. Fiden residential development (Spring 2022 to Summer 2026), the Sitter Valley Filtrox Areal transformation targeting up to 600 workplaces (Herbst 2025 to Summer 2026), the Bildweiher amphibian passage system in St. Gallen, and joint SBB/Stadt St. Gallen historic station underpass renovation.

Commercially, Grünenfelder & Lorenz operates a project-based professional services model, pricing per engagement based on scope, complexity, and duration, and winning work primarily through direct client relationships, repeat public-sector mandates, and competitive tenders in Eastern Switzerland (Ostschweiz), with selected projects extending beyond the region. Customer segmentation is vertical-oriented between public-sector infrastructure and private-sector commercial/residential development, with no consumer or SMB exposure, and the firm markets primarily through its public project portfolio and professional networks rather than broad advertising.

Name

Grünenfelder & Lorenz

Legal name

Grünenfelder & Lorenz AG

Website

https://gruenenfelder-lorenz.ch

Company type

Private

Founded year

1934

Operating status

Operating

Headcount range

11–50 employees

Short description

Grünenfelder & Lorenz AG is an independent Swiss engineering consultancy founded in 1934 in St. Gallen, delivering structural, civil, and BIM-based engineering services to public-sector and private-sector clients across Eastern Switzerland.

Ownership category

akta.pro rank

Product category

Civil and Structural Engineering Services

NAICS

Engineering Services (54133)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

Keywords

• Civil engineering services
• Structural engineering
• BIM coordination
• Infrastructure planning
• Construction supervision

Headquarters

HQ city

Stallen

HQ country

Switzerland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering Consulting Services: Professional services revenue from civil and structural engineering consulting, including project planning, design, construction supervision, and expert assessments for public and private sector clients

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Grünenfelder & Lorenz AG is an independent engineering firm providing civil and structural engineering services in Eastern Switzerland. Its core service portfolio covers four areas: Hochbau (structural engineering for buildings), Tiefbau (civil/infrastructure engineering including railway, bridge, and water works), BIM/Digitales Bauen (Building Information Modeling and digital construction methods), and Spezialgebiete (specialized services such as heritage restoration, condition assessment, hydraulic and ecological engineering). Services span planning, surveying, project management, design, construction supervision, and expert assessments for public and private sector clients.

Product overview

Grünenfelder & Lorenz AG is an independent engineering firm based in St. Gallen, Switzerland, established in 1934. The company operates as a services organization offering four interconnected core service areas: Hochbau (Structural Engineering), Tiefbau (Civil Engineering), BIM/Digitales Bauen (BIM/Digital Construction), and Spezialgebiete (Specialized Services). These services are offered as an integrated portfolio, with BIM and digital construction methods increasingly integrated across all project types. The company serves clients throughout the eastern Switzerland region on projects ranging from residential developments to complex infrastructure and heritage restorations.

Differentiator

Problem solved

Functional benefit

Products and services

• Hochbau (Structural Engineering) Structural engineering services for building construction projects including residential, commercial, and industrial developments. Covers construction pit engineering, reinforced concrete work, and support structure design for property developers, industrial clients, and public-sector builders.
• Tiefbau (Civil Engineering) Civil engineering infrastructure services including railway engineering, bridge construction and rehabilitation, water management, road construction, and drainage systems. Delivered primarily for public sector clients such as SBB and Appenzeller Bahnen and municipal authorities in Eastern Switzerland.
• BIM / Digitales Bauen (BIM / Digital Construction) Building Information Modeling and digital construction services including 3D modeling, BIM coordination, collision control using platforms such as Dalux and BIMcollab, BIM2Field implementation, 3D reinforcement detailing, cost estimation from BIM models, and live site monitoring via LiveCam and CraneCam.
• Spezialgebiete (Specialized Services) Specialized engineering services including heritage building restoration, condition assessment and expert reports, hydraulic engineering, ecological engineering (e.g., amphibian guidance systems), landslide remediation, and 3D digitization of building archives.

Named customers7 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Five partnerships are on record, tiered core and minor.

• Appenzeller BahnencoreStrategic or Co-development PartnerLong-standing engineering partnership with Appenzeller Bahnen for railway infrastructure projects including track renewal, retaining wall construction, and slope stabilization along the Appenzeller Bahnen network.
• Swiss Federal Railways (SBB)coreStrategic or Co-development PartnerStrategic partnership with SBB for infrastructure engineering projects including culvert rehabilitation, flood protection, and ecological works across the SBB network in Eastern Switzerland.
• Stadt GossauminorStrategic or Co-development PartnerMunicipal partnership for bridge inspection and assessment services including visual condition verification and maintenance recommendations.
• Gemeinde GoldachminorStrategic or Co-development PartnerStation modernization project including platform construction, canopy installation, track work, underpass, and public plaza development.
• SBB and Stadt St. GallencoreStrategic or Co-development PartnerJoint project coordination with SBB and Stadt St. Gallen for historic station underpass renovation including elevator and escalator installation.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• WaltGalmarini AG: Swiss structural and civil engineering firm with deep experience in complex building and infrastructure projects. Comparable as a specialist independent Swiss engineering practice competing for similar building and bridge commissions.
• Basler & Hofmann AG: Large independent Swiss engineering consultancy headquartered near Zurich offering civil, structural, and BIM services to public and private clients. Highly comparable in service mix (Hochbau, Tiefbau, digital construction) and client profile to Grünenfelder & Lorenz.
• Bollinger + Grohmann: European structural engineering firm with Swiss operations (Zürich). Comparable as an independent specialist structural consultancy delivering building engineering and BIM-coordinated projects for institutional clients.
• Dr. Deuring + Oehninger AG: Swiss independent structural and civil engineering consultancy with a similar service mix across Hochbau, Tiefbau, and special services. Comparable in operating model and client profile within the Eastern Switzerland / greater Swiss market.
• Bänziger Partner AG: Zurich-based independent structural and civil engineering consultancy serving public and private clients in Switzerland. Closely comparable in size, independent ownership, and integrated planning/BIM service offerings.
• CSD Group SA: Established Swiss engineering group covering infrastructure, environment, and structural engineering. Comparable as an independent Swiss firm bidding on public and private civil/structural mandates across cantons.
• Conzett Bronzini Partner AG: Independent structural and civil engineering firm based in Chur, Switzerland. Directly comparable in size, regional focus, and service portfolio including heritage and infrastructure works.
• Schlaich Bergermann Partner (sbp): Internationally active structural engineering firm with Swiss subsidiary (sbp suisse) in Zürich. Comparable as a specialist structural engineering practice delivering complex and infrastructure projects in the Swiss market.
• Emch+Berger AG: Swiss engineering firm part of the EBP Group with broad civil and structural engineering practices. Comparable as a long-established independent Swiss consultancy delivering infrastructure and building projects across cantons.

Broad incumbents

• Amstein+Walthert AG: One of the largest Swiss engineering consultancies, spanning building services, structural, and infrastructure engineering. Overlaps with G&L in structural and civil engineering but operates at significantly greater scale and breadth.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/gruenenfelder-lorenz-ag

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 Grünenfelder & Lorenz