STB Engineers

What STB Engineers does

STB Ingenieure (STB Engineers) is an owner-managed German structural engineering, architecture, and building inspection firm founded in 1948 and headquartered in Bremen, with a second office in Potsdam established in 1991. The company operates as a PartGmbB (Partnerschaftsgesellschaft mit beschränkter Berufshaftung) under the legal name STB Ingenieure Timm Hempel Marche Ruf Nolte Ingenieure und Architekt PartGmbB, and maintains two wholly-owned subsidiaries: STB Bauphysik GmbH (building physics, founded 2021) and STB Ingenieure GmbH (founded 2024). Current partners are Dr.-Ing. Maike Timm, Markus Hempel, Eduard Ruf, and Christian Nolte, following the January 2026 retirement of Diethelm Marche.

The firm's core offerings span structural engineering (Tragwerksplanung) for LPH 1-8, technical building inspection (Bautechnische Prüfung) by state-recognized Prüfingenieure, in-house architecture, building inspection (Bauwerksprüfung) per VDI 6200, renovation and expert opinions (Sanierung & Gutachten), safety and health coordination (SiGeKo), fire protection (Brandschutz), and Building Information Modeling. Work is delivered through interdisciplinary BIM workflows with a four-eye principle quality control process, supported by building physics simulation for energy efficiency and ESG compliance. Notable references include the 146-meter ZARM Fall Tower at the University of Bremen, the Bremer Landesbank headquarters, Vivantes clinics, the Ed. Züblin sports hall, and Stadtwerke Potsdam's Strandbad Babelsberg.

STB generates revenue through professional services fees billed under the HOAI fee structure for architects and engineers and Baugébührenordnung for inspection services, with project-scope-based pricing and multi-year contract cadence. Go-to-market is sales-led and relationship-driven, with partners personally involved in project acquisition across industrial customers (Kraft Foods Deutschland), public sector clients (Freie Hansestadt Bremen, Stadtwerke Potsdam), healthcare providers (Vivantes, KRH Region Hannover), and commercial real estate developers (Sparkasse/Zechbau AG). The firm employs over 70 staff, has completed more than 26,000 projects, and in May 2026 consolidated its Bremen operations into a new flagship headquarters at the Kranhaus in the Europahafen.

Name

STB Engineers

Legal name

STB Ingenieure Timm Hempel Marche Ruf Nolte Ingenieure und Architekt PartGmbB

Website

https://stb-ingenieure.de

Company type

Private

Founded year

1948

Operating status

Operating

Headcount range

51–100 employees

Ownership category

akta.pro rank

Product category

Structural Engineering Services

NAICS

Engineering Services (541330), Architectural Services (541310), Building Inspection Services (541350)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

Keywords

• Structural engineering services
• Building information modeling
• Technical building inspection
• Fire protection planning
• Building physics consulting

Headquarters

HQ city

Bremen

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering Services: Professional fees for structural engineering, technical inspection, architecture, building physics, fire protection, and related engineering services. Fees are based on the Honorarordnung für Architekten und Ingenieure (HOAI) fee structure for architectural and engineering services, and construction fee regulations for inspection services.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

STB Ingenieure is an interdisciplinary engineering firm that delivers integrated structural engineering, technical building inspection, architecture, building inspection, renovation and expert opinions, SiGeKo coordination, fire protection, BIM-based planning, and building physics services to industrial customers and public clients. The firm operates as a unified team under a PartGmbB partnership structure, with more than 70 employees based in Bremen and Potsdam serving projects primarily in northern Germany. Across its 75-year history it has completed more than 26,000 projects, applying BIM workflows and a four-eye principle to deliver review-ready documentation with less than 5% change orders.

Product overview

STB Ingenieure is an interdisciplinary engineering firm offering a comprehensive portfolio of integrated planning services for construction projects. The core offerings include Tragwerksplanung (structural engineering), Bautechnische Prüfung (technical building inspection), Architektur (architecture), Bauwerksprüfung (building inspection), Sanierung & Gutachten (renovation & expert opinions), SiGeKo (safety coordination), Brandschutz (fire protection), BIM (building information modeling), and Bauphysik (building physics). The firm operates as a unified interdisciplinary team with BIM workflows, combining structural planning, architecture, building physics, and specialist planning services. Architecture services have been offered since 2014 through their in-house team, while building physics is delivered through the subsidiary STB Bauphysik GmbH. The company serves industrial customers and public clients, handling both new construction and renovation projects ranging from heritage buildings to complex industrial and healthcare facilities.

Differentiator

Problem solved

Functional benefit

Brands

• STB Bauphysik: Building physics subsidiary specializing in thermal protection, building acoustics, sustainable construction certification, and energy consulting services.

Products and services

• Tragwerksplanung (Structural Engineering) Structural engineering services for buildings and construction projects, including static calculations, structural planning from LPH 1-8, and BIM-based workflows serving industrial customers and public clients in northern Germany.
• Bautechnische Prüfung (Technical Building Inspection) Independent technical building inspection services for structural safety, performed by recognized testing engineers according to state building regulations.
• Architektur (Architecture) Object planning services from initial concept to handover, with a ten-person architecture team specializing in commercial, industrial, and administrative buildings.
• Bauwerksprüfung (Building Inspection) Building inspection services following VDI 6200 standards, including structural safety inspections, documentation, and maintenance books for buildings and structures.
• Sanierung & Gutachten (Renovation & Expert Opinions) Renovation planning and expert opinions for existing buildings, including damage diagnostics, remediation planning, and building books for long-term maintenance.
• SiGeKo (Safety and Health Protection Coordination) Safety and health protection coordination services for construction sites, required when multiple contractors are working simultaneously.
• Brandschutz (Fire Protection) Fire protection planning services including fire protection concepts, structural fire protection, and preventive fire safety measures for new builds and renovations.
• BIM (Building Information Modeling) Building Information Modeling services including creation and editing of specialist models, work with CDE (Common Data Environment), collision checking, and quantity takeoffs from 3D models.
• STB Bauphysik GmbH (Building Physics) Building physics services including thermal protection, building and room acoustics, sustainable construction consulting, and certified auditors, operated through the wholly-owned subsidiary STB Bauphysik GmbH led by Managing Director Dipl.-Ing. Olaf Bosenius.

Quantifiable outcome

• Construction time reduced by up to 30%
• +2 more outcomes

Named customers9 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

Feature4 records

Partnerships

14 partnerships are on record, tiered core and minor.

• Ingenieurkammer der Freien Hansestadt BremencoreOthersProfessional chamber membership required for engineering practice in Bremen. Provides access to professional standards, networking, and regulatory framework.
• Ingenieurkammer NiedersachsencoreOthersProfessional chamber membership for engineering practice in Lower Saxony.
• Brandenburgische IngenieurkammercoreOthersProfessional chamber membership for engineering practice in Brandenburg, supporting Potsdam operations.
• Verband Beratender Ingenieure (VBI)coreOthersAssociation of Consulting Engineers membership. Partner Dr.-Ing. Maike Timm, Eduard Ruf, and Markus Hempel are members. Markus Hempel serves on the board since 2023.
• Vereinigung der Prüfingenieure für Bautechnik e.V. (VPI) / Bundesvereinigung der Prüfingenieure (BVPI)coreOthersAssociation of structural testing engineers. Partner Dr.-Ing. Maike Timm served as 1st Chair of VPI Bremen (2022-2024) and is currently President of BVPI since 2024.
• Verein Deutscher Ingenieure (VDI)coreOthersAssociation of German Engineers. Partner Eduard Ruf serves as VDI Working Group Leader for Building Technology (ABI). Dr.-Ing. Maike Timm chaired the VDI Building Technology working group for Bremen district association (2007-2020).
• Bund Deutscher Baumeister, Architekten und Ingenieure e.V.minorOthersProfessional association for architects, engineers and construction professionals.
• QualitätsVerbund Planer am BaucoreOthersQuality association for planners in construction. STB is certified under this quality management standard since 2011 (Reg. No. 01 355 000001/067).
• Deutscher Beton- und Bautechnikverein e.V.minorOthersGerman concrete and construction technology association.
• Bundesstiftung BaukulturminorOthersFederal foundation for building culture.
• Deutscher Stahlbau-VerbandminorOthersGerman steel construction association.
• Landesgütegemeinschaft Instandsetzung von Betonbauwerken Bremen-Niedersachsen e.V.coreOthersQuality association for concrete repair. Supports specialized concrete renovation services.
• AWADO Rechtsanwaltsgesellschaft mbHcoreStrategic or Co-development PartnerLegal partnership for the whistleblower system (Hinweisgebersystem 360). AWADO provides trusted lawyers who handle confidential reports from customers, employees, and third parties.
• STB Bauphysik GmbHcoreStrategic or Co-development PartnerSeparate subsidiary company specializing in building physics. Founded in 2021, operates from locations in Bremen (Am Waller Freihafen 1a) and Potsdam. Led by Managing Director Dipl.-Ing. Olaf Bosenius.

Scale indicators8 records

Recent moves10 records

Expansion highlights4 records

Direct peers

• Bollinger + Grohmann: Frankfurt-based structural engineering consultancy with comparable focus on complex structural engineering for buildings and innovative structural solutions. Directly competes for complex structural mandates across Germany.
• Werner Sobek: Stuttgart-based structural engineering firm specializing in innovative and sustainable structural solutions. Comparable in technical depth, BIM integration, and focus on landmark and complex building projects.
• Krebs + Kiefer: German engineering consultancy offering structural engineering, building services, and infrastructure planning. Comparable multi-discipline service portfolio and similar focus on building construction and infrastructure projects.
• Schüßler-Plan: German engineering consultancy providing structural planning, BIM, infrastructure, and project management services. Comparable breadth of engineering services and similar institutional client base.
• Ingenieurbüro Grassl: German structural engineering consultancy offering structural planning, bridge engineering, and building inspection services. Comparable mid-sized peer competing for similar structural engineering and inspection mandates.
• HPP Architekten: German architectural firm with integrated engineering services and BIM workflows. Comparable in providing architecture with integrated planning for complex commercial, healthcare, and public buildings.
• R+T Ingenieure: German engineering consultancy specializing in structural engineering, building physics, and façade engineering. Closely comparable in technical scope and focus on integrated planning for complex building projects.

Broad incumbents

• Drees & Sommer: Large Stuttgart-headquartered engineering and consulting firm operating broadly across real estate, infrastructure, and industrial projects. Overlaps with STB's structural and building services but operates at significantly larger scale with a wider portfolio.
• Sweco (Germany): European engineering consultancy with substantial German operations covering structural engineering, BIM, infrastructure, and building services. Overlaps with STB's core offering but as part of a much broader pan-European portfolio.
• Arcadis Germany: Global design and engineering consultancy with German operations providing structural engineering, project management, and sustainability advisory. Competes for larger institutional and industrial mandates that overlap with STB's client base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• Instagraminstagram.com/stb_ingenieure
• LinkedInlinkedin.com/company/stb-sabotke-timm-partner-partgmbb

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 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 STB Engineers