What ersa-bau gmbh does

ERSA-Bau GmbH is a family-owned German construction company (Bauunternehmung) headquartered in Sömmerda, Thuringia, providing consulting, planning, and execution services for new builds and renovation projects. Founded in 1990 by Diplom-Bauingenieur Erhard Sack as a five-person operation, the firm is now in its second generation of family ownership, with Matthias Sack serving as Managing Director since 2010 after joining in 2005. The company operates as a medium-sized enterprise (mittelständisches Unternehmen) with its own operating grounds, office building, and diverse machinery, and serves clients primarily in the Landkreis Sömmerda and Raum Erfurt-Weimar region.

Name

ersa-bau gmbh

Legal name

ERSA-Bau GmbH

Website

https://ersa-bau.de

Company type

Private

Founded year

1990

Operating status

Operating

Short description

ERSA-Bau GmbH is a family-owned German construction company in Sömmerda, Thuringia, offering consulting, planning, and execution of new builds and renovations, with core expertise in masonry, concrete, plastering, and thermal insulation for private, commercial, and public clients in central Germany.

Ownership category

akta.pro rank

Headquarters

HQ city

Sömmerda

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Marketing or Sales, Others

Revenue model

1. Construction Services Revenue: Project-based revenue from construction services including new builds, renovations, and modernization projects. Services include consulting, planning, and execution of construction measures (Beratung, Planung und Ausführung von Bauleistungen im Neubau und der Sanierung).

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

ERSA-Bau GmbH is a family-owned construction company providing integrated construction services from consultation and planning through execution, with core specialties in concrete, formwork, masonry, and plastering. The firm delivers new construction (Neubau) and renovation/modernization (Sanierung) for private homeowners as well as commercial, institutional, and public-sector clients across the Sömmerda and Erfurt-Weimar regions of Thuringia, Germany.

Product overview

ERSA-Bau GmbH is a traditional construction company (Bauunternehmung) offering a comprehensive range of construction services. The company provides integrated services from consultation and planning through to execution, with core technical offerings in masonry (Maurerwerk), concrete and reinforced concrete work (Beton und Stahlbeton), and building waterproofing (Bauwerksabdichtung). Their service portfolio covers new construction (Neubau) and renovation/modernization (Sanierung und Modernisierung) projects, including specialized offerings such as raw construction work (Rohbauarbeiten), interior and exterior plastering (Innenputz und Außenputz), and thermal insulation composite systems (Wärmedämmverbundsystem). The company serves both private residential clients and commercial/public sector customers in the Sömmerda, Erfurt, and Weimar regions of Thuringia, Germany.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• 4.8/5 star Google rating based on customer reviews

Named customers10 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

Integration7 records

Partnerships

Six partnerships are on record, tiered core and minor.

• HWK Erfurt (Handwerkskammer Erfurt)coreOthers · 1 January 2019Managing director Matthias Sack has been publicly appointed and sworn as an expert witness (vereidigter Sachverständiger) by the Chamber of Crafts Erfurt since 2019.
• Bund Deutscher Baumeister (BdB)minorOthersProfessional association membership for German construction engineers. The managing director Matthias Sack is a member of this professional organization.
• Kreishandwerkerschaft Weimar-SömmerdacoreOthersLocal craftsman's association where Matthias Sack serves as Innungsobermeister (master craftsmen guild master) of the construction trade and member of the Gesellenprüfungsausschuss (journeyman examination committee).
• Vereinigung Junger Bauunternehmer im Zentralverband Deutsches Baugewerbe e.V.minorOthersAssociation of Young Construction Entrepreneurs under the Central Association of German Construction Trade. Networking and professional development for younger construction company owners.
• Verband baugewerblicher Unternehmer Thüringen e.V.minorOthersThuringian construction industry association representing commercial construction companies in the state.
• Wirtschaftsjunioren MittelthüringenminorOthersYoung entrepreneurs network for Central Thuringia region, providing networking opportunities for business professionals.

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Wolff & M\u00fcller GmbH & Co. KG: Stuttgart-headquartered German construction company offering building, civil engineering and construction services across Germany. Comparable because Matthias Sack worked there as Bauleiter, and it is a typical employer/competitor for mid-sized German construction firms in ERSA-Bau's service categories.
• Bilfinger SE: Large German industrial services and construction firm. Comparable because Matthias Sack was a former site manager at the predecessor Bilfinger Berger AG, and the firm operates in adjacent construction and building services segments where ERSA-Bau also competes for nonresidential contracts.
• Heijmans (Germany operations): Major European construction and real estate company with German operations in building and renovation. Comparable as a much larger incumbent in the same general building construction space, against whose regional presence ERSA-Bau competes.
• K\u00f6ster GmbH: German Mittelstand-plus construction company offering building construction, civil engineering, and renovation services across Germany. Comparable because it operates in the same construction services categories at a larger scale, competing for similar commercial and public clients.
• Leonhard Weiss GmbH & Co. KG: Major German construction and civil engineering firm with broad building services. Comparable as a large German incumbent in the same building construction and renovation category where ERSA-Bau operates at a smaller scale.
• Klebl GmbH: German family-owned construction company operating in building construction and concrete/masonry trades nationally. Comparable as a family-led Mittelstand competitor operating in the same construction services segments with similar ownership structure.

Regional players

• GOLDHACKER Bauunternehmen GmbH: Thuringian/central German Mittelstand construction contractor offering masonry, concrete, and renovation services to private, commercial and public clients. Comparable as a directly adjacent regional Mittelstand competitor with similar service mix and customer segments.
• Streif Baulogistik GmbH: German mid-sized construction and building services firm with regional project delivery. Comparable because it operates at similar Mittelstand scale on building construction and renovation projects in adjacent German regions.
• Bauer Bauunternehmen GmbH (Sachsen/Th\u00fcringen regional): Mid-sized German regional construction company with masonry, concrete, and building construction services in eastern German markets. Comparable as a regional Mittelstand contractor delivering similar services to commercial and private clients in adjacent geographies.
• WOLFF GRUPPE / regional Thuringian Mittelstand contractors: Regional German construction and real estate group active in central/eastern Germany. Comparable as a regional incumbent with overlapping building construction and renovation services competing in similar project types.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/ersabaugmbh
• LinkedInlinkedin.com/company/ersa-bau-gmbh

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 ersa-bau gmbh