Fritz Spieth

What Fritz Spieth does

Fritz Spieth (legally Ingenieurbüro Fritz Spieth Beratende Ingenieure GmbH, operating as Spieth Ingenieure) is a privately held German civil engineering consultancy founded on 1 April 1955 in Esslingen am Neckar. The firm delivers integrated infrastructure planning services across six competence areas: utilities supply (Medienversorgung), drainage (Entwässerung), hydraulic engineering (Wasserbau), traffic infrastructure (Verkehrsanlagen), open space and landscape planning (Freiraum- und Landschaftsplanung), and special services (Sonderleistungen). Project work spans all HOAI phases (1-9) from initial consulting and feasibility studies through detailed design, construction supervision, and project management, and the firm has operated under DIN EN ISO 9001 quality management since 2006.

The company operates a network of 10 offices across Germany — Esslingen (headquarters), Euskirchen, Munich, Ludwigshafen, Ettlingen, Heidelberg, Schwäbisch Hall, Sinsheim, Leipzig, and Tauberbischofsheim — staffed by over 80 (and by some sources over 125) engineers. Customers comprise three primary verticals: municipalities (Kommunen) for public infrastructure such as drainage, water management, and roads; industrial companies (Industrie) for site utilities, production facility expansion, and energy supply; and property developers (Bauträger) for brownfield conversion and residential infrastructure. Named engagements include work for Gemeinde Mönsheim, Infineon Villach, and DBA Deutsche Bauwert AG.

Revenue is generated through professional engineering fees under the HOAI (Honorarordnung für Architekten und Ingenieure) framework, paid by municipalities and private developers on a project-commissioned basis. Distribution is direct, via sales-led engagement and long-standing client relationships, with no intermediaries. The firm has pursued a programmatic geographic expansion strategy — opening offices in Munich (2024), Leipzig (June 2025), and Tauberbischofsheim (2024-2025) — alongside acquisitions and equity stakes in adjacent firms (IST Ingenieurgesellschaft 2023; IBU Ingenieurgesellschaft 2024-2025). Current managing directors and shareholders are Achim Schmielau, Bernd Schulz, and Georg Thier, following a generational ownership transition completed in 2019-2020.

Name

Fritz Spieth

Legal name

Ingenieurbüro Fritz Spieth Beratende Ingenieure GmbH

Website

https://www.ib-spieth.de

Company type

Private

Founded year

1955

Operating status

Operating

Headcount range

11–50 employees

Short description

Fritz Spieth is a privately held German civil engineering consultancy, founded 1955 in Esslingen, providing integrated infrastructure planning across drainage, utilities, traffic, hydraulic engineering, and landscape design to municipalities, industrial clients, and property developers across 10 German offices under the HOAI fee framework.

Ownership category

akta.pro rank

Product category

Civil Engineering Services

NAICS

Engineering Services (54133), Engineering Services (541330), Architectural, Engineering, and Related Services (5413)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Water, Wastewater & Hydraulics Engineering Consulting (BPAHAIAD)

akta.pro secondary industries

Construction Management (Agency/Owner’s Rep) (IMAFAAAC), Construction Management & Delivery (EPCM/CMAR/Design-Build Oversight) (EUANALAE)

Keywords

• Civil engineering services
• Infrastructure planning
• Utilities supply planning
• Drainage engineering
• Hydraulic engineering

Headquarters

HQ city

Esslingen

HQ country

Germany

HQ region

Europe

Offices10 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering Consulting Services: Revenue is generated through professional engineering consulting fees for infrastructure planning and realization services for municipalities and companies. Services span planning phases 1-9 of the HOAI (German fee structure for architects and engineers), including consulting, studies/concepts, detailed planning, construction supervision, and project management. Revenue is project-based with multiple concurrent client engagements.
2. Infrastructure Planning and Realization: Full-service engineering for municipal and industrial infrastructure projects including water management, transport, energy, and telecommunications. Projects include new construction, expansion, rehabilitation, and conversion of infrastructure assets. Projects are typically commissioned by municipalities or private developers.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

Ingenieurbüro Fritz Spieth is a civil engineering consultancy delivering integrated infrastructure planning and realization services across six competence areas: utilities supply (Medienversorgung), drainage and stormwater treatment (Entwässerung), hydraulic engineering (Wasserbau), traffic infrastructure (Verkehrsanlagen), open space and landscape planning (Freiraum- und Landschaftsplanung), and special services (Sonderleistungen). The firm serves municipalities, industrial companies, and property developers with full project lifecycle coverage from initial consulting through detailed planning, construction supervision, and project management under the HOAI framework.

Product overview

Ingenieurbüro Fritz Spieth is a civil engineering and consulting firm offering integrated infrastructure planning services. The company provides six core service areas: Medienplanung (utilities supply), Entwässerung (drainage), Wasserbau (hydraulic engineering), Verkehrsanlagen (traffic infrastructure), Freiraum- und Landschaftsplanung (landscape planning), and Sonderleistungen (special services). These services cover the complete project lifecycle from planning phases through to construction supervision, serving municipalities, industry clients, and property developers across Germany.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• DIN EN ISO 9001 certified since 2006, demonstrating systematic quality management.
• +1 more outcomes

Named customers6 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

Eleven partnerships are on record, tiered minor.

• IBU Ingenieurgesellschaft für Bauwesen und Umwelttechnik mbHminorStrategic or Co-development Partner · 1 January 2025In October 2025, Fritz Spieth Engineering Office became a new shareholder of IBU Ingenieurgesellschaft für Bauwesen und Umwelttechnik mbH, based in Tauberbischofsheim. This led to the establishment of a new branch office in Tauberbischofsheim.
• IBV Ingenieure GmbHminorOthers · 1 January 2021IBV Ingenieure GmbH was founded in 2021 in Esslingen. Spieth Ingenieure held shares until 01.01.2020 when they were sold to Christian Burgbacher. Now a separate entity with historical management connections.
• kosima GmbHminorOthers · 1 January 2011kosima GmbH was founded by Gerhard Heubach on 01.09.2011. Spieth Ingenieure held shares until the end of 2019, when the shares were sold to Ronny Biesinger. Now a separate entity with shared historical management connections.
• Re2area GmbHminorStrategic or Co-development Partner · 1 January 2010Re2area GmbH, based in Heidelberg, specializes in the revitalisation and reintegration of pre-used locations. Spieth Ingenieure has participated in Re2area GmbH since 2007, collaborating on brownfield development and land conversion projects such as the Lyautey Barracks conversion in Villingen-Schwenningen.
• Chamber of Engineers Baden-Württemberg (INGBW)minorOthers · 1 January 1955INGBW is the Chamber of Engineers for Baden-Württemberg. Spieth Ingenieure maintains membership, contributing to professional standards and representing engineering interests in the region.
• Association of Consulting Engineers (VBI)minorOthers · 1 January 1955VBI represents consulting engineers in Germany. Spieth Ingenieure maintains membership in this professional association.
• German Association for Water, Wastewater and Waste (DWA)minorOthers · 1 January 1955DWA is the German professional association for water, wastewater, and waste management. Spieth Ingenieure maintains membership due to their expertise in urban water management and drainage.
• Water Management Association Baden-Württemberg e.V. (WBW)minorOthers · 1 January 1955WBW is the water management association for Baden-Württemberg. Spieth Ingenieure maintains membership supporting their water management and hydraulic engineering services.
• DVGW German Technical and Scientific Association for Gas and WaterminorOthers · 1 January 1955DVGW is the German technical and scientific association for gas and water. Spieth Ingenieure holds membership supporting their utilities and media supply engineering services.
• Association of Certified Remediation Consultants for Drainage Systems e.V. (VSB)minorOthers · 1 January 1955VSB represents certified remediation consultants for drainage systems. Spieth Ingenieure maintains membership supporting their drainage and environmental engineering competencies.
• VSVI Baden-Württemberg (Association of Road and Traffic Engineers)minorOthers · 1 January 1955VSVI is the Association of Road and Traffic Engineers for Baden-Württemberg. Spieth Ingenieure maintains membership supporting their traffic infrastructure planning services.

Scale indicators4 records

Recent moves11 records

Expansion highlights6 records

Direct peers

• Drees & Sommer: German engineering and consulting firm offering infrastructure, construction, and real estate advisory services across multiple specialties. Highly comparable mid-to-large German engineering consultancy competing for similar municipal and industrial infrastructure planning engagements.
• Schüßler-Plan Ingenieurgesellschaft: German engineering consultancy specializing in infrastructure planning, traffic engineering, and water management for public clients. Closely comparable mid-sized German competitor in the same HOAI-based infrastructure planning space.
• Krebs + Kiefer: German engineering consultancy providing civil engineering, infrastructure planning, and construction supervision services. Comparable mid-sized German firm with similar HOAI-based service offerings and municipal/industrial client base.
• Boll und Partner: German engineering consultancy providing infrastructure, water, and environmental planning services. Comparable mid-sized German competitor in HOAI-based infrastructure consulting for public and private clients.

Broad incumbents

• Sweco: European engineering, design, and consulting firm with significant German operations. Larger incumbent offering broader geographic and service-line coverage but overlapping in water, transport, and infrastructure planning.
• Arcadis: Global design and consultancy firm with substantial German presence providing water, infrastructure, and environmental engineering services. Larger incumbent competing for similar German municipal and industrial projects.
• AFRY: European engineering, design, and advisory firm with German operations focused on infrastructure, water, and energy. Larger incumbent with overlapping water management, transport, and infrastructure planning capabilities.
• Ramboll: Global engineering, architecture, and consulting firm with significant German operations. Larger incumbent providing water, environment, and infrastructure services that compete for the same German municipal and industrial clients.
• CDM Smith: Global engineering and construction firm with German operations focused on water, environment, and infrastructure. Larger incumbent offering comparable water/wastewater engineering services to municipal clients.

Regional players

• DB Engineering & Consulting: Deutsche Bahn subsidiary providing rail and infrastructure engineering services primarily in German-speaking markets. Comparable German engineering consultancy focused on transport and infrastructure planning for public-sector clients.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/FritzSpiethGmbH
• LinkedInlinkedin.com/company/fritz-spieth-beratende-ingenieure-gmbh

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries6 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 Fritz Spieth