GROTH-Bau

What GROTH-Bau does

GROTH-BAU GmbH Bauunternehmung is a third-generation, family-owned construction firm headquartered in Buchholz in der Nordheide, Germany, operating as a general contractor (Generalunternehmer) and general developer (Generalübernehmer) in the Hamburg metropolitan area and the surrounding Nordheide region. The company originated from a predecessor founded in 1925 and was reorganized into its current corporate form in 1980, with full family ownership consolidated under managing partners Jan Groth (civil engineer) and Karsten Groth (architect) in 2002. Its service offering combines construction execution with an integrated in-house architecture office covering HOAI phases 1–9, supported by AVA (tendering, awarding, billing) and CAD tooling, and certified under ISO 9001, ISO 14001, and AMS BAU standards.

The company executes commercial, industrial, institutional, and residential projects — including condominium (Eigentumswohnung) development — for a diversified base of enterprise and public-sector clients such as ALDI, Airbus, DESY, Eugen Block Holding, Volksbank Lüneburger Heide, Hanseatische Baugenossenschaft Hamburg, DRK Hamburg, and Stadtwerke Buchholz. Revenue is project-based, with FY2024 disclosed turnover of €15.92 million against a workforce of 64–65 employees. The corporate group also owns GROTH Immobilien Verwaltungs GmbH, a property management entity overseeing approximately 16,000 m² of rental space, and three wholly-owned project companies, giving the family a vertically integrated footprint across construction execution, property management, and project-level real estate ownership.

Name

GROTH-Bau

Legal name

GROTH-Bau GmbH Bauunternehmung

Website

https://groth-baugmbh.de

Company type

Private

Founded year

1980

Operating status

Operating

Headcount range

1–10 employees

Short description

GROTH-Bau is a third-generation family-owned German general contractor and developer based in Buchholz in der Nordheide, executing commercial, industrial, institutional, and residential projects — including condominiums — for enterprise and public-sector clients across the Hamburg metropolitan area.

Ownership category

akta.pro rank

Headquarters

HQ city

Buchholz

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Construction Contracting: GROTH-BAU generates revenue primarily through construction contracting as a general contractor (Generalunternehmer) or general developer (Generalübernehmer) for residential, commercial, and industrial construction projects. Revenue is project-based and recognized upon project completion or over the construction period. The company also develops its own real estate portfolio through its subsidiary GROTH Immobilien Verwaltungs GmbH, generating rental income from approximately 16,000 m² of managed properties.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

GROTH-Bau GmbH is a third-generation family-owned construction company that operates as both a general contractor (Generalunternehmer) and general developer (Generalübernehmer) for new construction, building in existing structures, renovation and modernization, rough construction work, and project development. The company also operates an integrated in-house architecture office delivering full architectural services across all nine HOAI service phases (LPH 1-9) and develops and sells residential condominiums as investment properties.

Product overview

GROTH-Bau GmbH is a third-generation family-owned construction company offering a comprehensive portfolio of construction services. Their core offering encompasses new construction of residential, commercial, and industrial buildings (Neubau) as both general contractor and developer, renovation and modernization services (Sanierung/Modernisierung), rough construction work (Rohbauarbeiten), full architectural services per HOAI phases 1-9 through an integrated in-house architecture office, and project development. The company also develops and sells condominiums (Eigentumswohnungen) for investment purposes. All services are delivered with an integrated AVA and CAD software platform for efficient project management and coordination with external engineering specialists.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• KITA Libelle achieved 56% below ENEV 2009 energy efficiency requirements through use of over 600 m³ of insulation.

Named customers13 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

Feature3 records

Partnerships

Three partnerships are on record, tiered minor.

• Architekturbüro Annette ScholzminorStrategic or Co-development PartnerArchitecture firm based in Bendestorf (Rolf-Meyer-Weg 6, 21227 Bendestorf) that collaborates with GROTH-BAU on construction projects, including single-family home designs.
• MWY Yeger Niedziella Architekten + Ingenieure GbRminorStrategic or Co-development PartnerArchitecture and engineering firm in Hamburg (Langenstücken 29, 22393 Hamburg) that has collaborated with GROTH-BAU on multiple residential projects including Alte Berner Straße 3 (€1.59M) and Sonnenhöhe project.
• Weidling & Weidling ArchitektencontorminorStrategic or Co-development PartnerArchitecture firm in Buchholz (Breite Straße 20, 21244 Buchholz) that partnered with GROTH-BAU on the HASPA Poststraße project (€2.77M).

Scale indicators5 records

Recent moves6 records

Expansion highlights3 records

Broad incumbents

• HOCHTIEF AG: Leading German-based international construction group with extensive building and infrastructure operations in Germany and globally. Comparable as a major German general contractor, though at a dramatically larger scale than GROTH-Bau.
• Ed. Züblin AG: One of Germany's largest construction companies, part of STRABAG SE, delivering building construction, civil engineering, and tunneling across Germany. Comparable as a German general contractor but operating at vastly greater scale.
• Goldbeck GmbH: Larger German design-build general contractor specializing in commercial, industrial, and public-sector turnkey construction with a systemized building approach. Comparable offering to GROTH-Bau but at significantly greater scale and geographic reach.
• Bilfinger SE: German-listed industrial services and construction provider serving process-industry, energy, and building clients. Comparable as a broader German construction/services incumbent, though its portfolio is more industrial-services oriented.

Direct peers

• Matthäi Bauunternehmen GmbH & Co. KG: Family-owned German construction group with general contractor and civil engineering capabilities across northern and eastern Germany. Comparable as a family-owned, mid-sized German general contractor with similar service scope.
• Otto Wulff Bauunternehmung GmbH & Co. KG: Hamburg-based, family-influenced general building contractor operating across residential, commercial, and industrial projects in northern Germany. Closest geographic and scale comparable to GROTH-Bau within the Hamburg metro region.
• Kögel Bau GmbH & Co. KG: German regional general contractor delivering turnkey residential, commercial, and industrial projects with integrated planning. Comparable as a German general contractor of similar scale and service mix.
• Köster GmbH: German general contractor with multiple regional offices providing turnkey construction across commercial, industrial, and residential segments. Comparable as a multi-region German general contractor offering integrated planning-to-execution services.
• Klebl GmbH: Mid-sized German construction company with general contractor, precast, and project development capabilities serving residential, commercial, and industrial clients. Comparable as a German family-influenced general contractor with integrated project development.
• AUG. PRIEN Bauunternehmung (GmbH & Co. KG): Long-established Hamburg general contractor delivering commercial, residential, and industrial construction, including complex inner-city and waterfront projects. Similar regional footprint and project-type mix to GROTH-Bau.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/grothbaugmbh
• LinkedInlinkedin.com/company/groth-bau-gmbh

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries3 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 GROTH-Bau