Kulmer Bau Und Holzbau

What Kulmer Bau Und Holzbau does

Kulmer Bau Und Holzbau is an Austrian family-owned construction group founded in 1965 in Pischelsdorf am Kulm, Styria, operating through two wholly owned entities — Kulmer Bau GmbH (general construction, concrete, building-materials trade) and Kulmer Holz-Leimbau GesmbH (timber construction and glulam manufacturing). The firm employs approximately 200-240 staff and has been led in its second generation since 1997 by siblings BM Ing. Hannelore Feichtinger and BM Ing. Gernot Kulmer. It offers a full-stack construction service portfolio spanning Hochbau (conventional building), Holzbau (timber construction), Beton (concrete), Generalunternehmer (general contractor), and Hausbau (single-family home construction), serving residential homeowners, commercial and industrial clients, and the public sector.

The company's core technological differentiator is the Kielsteg system — a patented, lightweight, single-span timber load-bearing element with unique waffle/honeycomb geometry enabling roof and ceiling spans up to 30 meters with up to 70% material savings versus solid sections, protected by patents in 28 countries. Complementary proprietary offerings include CLTPLUS cross-laminated timber components (with 215+ elements deployed in the Villach kindergarten), an integrated facade system co-developed with AEE INTEC that carries entire building-services technology for fast retrofit installation, and digital surveying stations with 3D laser scanners. Production is anchored on a 130,000 m² campus featuring 15,500 m² of timber manufacturing and assembly halls, a 26-meter concrete mixing plant, 19,000 m² of covered storage, and a 1,625 kWp solar PV installation supporting self-supply electricity and a 1,000 m³ rainwater recovery basin.

The business model is sales-led, project-based general contracting with revenue generated from construction services, sale of prefabricated timber elements, and full-project coordination as GU. Go-to-market is direct engagement with enterprise, developer, and public-sector buyers supplemented by participation in public tenders; pricing is set per-project through consultation with no publicly disclosed rates. Customer logos span social housing (GIWOG), retail (Hofer/Aldi, EUROSPAR), food/beverage (Joh. Johannson Coffee, Norway), automotive (MAGNA Heavy Stamping), railway infrastructure (ÖBB), and municipal government (Gemeinde Villach). The company is entirely family-financed — no external funding rounds, no listed ticker, and no institutional investors are recorded in the source data.

Name

Kulmer Bau Und Holzbau

Legal name

Kulmer Bau GmbH

Website

https://kulmerbau.at

Company type

Private

Founded year

1965

Operating status

Operating

Short description

Austrian family-owned construction group (founded 1965) operating two entities — Kulmer Bau GmbH and Kulmer Holz-Leimbau GesmbH — delivering concrete and timber construction, general contracting, and single-family home building, with the patented Kielsteg large-span timber system as core technology.

Ownership category

akta.pro rank

Product category

Construction Services

NAICS

New Single-Family Housing Construction (except For-Sale Builders) (236115), New Multifamily Housing Construction (except For-Sale Builders) (236116), Commercial and Institutional Building Construction (236220), Industrial Building Construction (236210)

SIC

General Bldg Contractors - Residential Bldgs (1520), Construction - Special Trade Contractors (1700), Millwood, Veneer, Plywood, & Structural Wood Members (2430)

akta.pro primary industry

Residential Design-Build & Renovation-Integrated Builders (IMAFABAE)

akta.pro secondary industry

Residential Interior Fit-Out (Multi-Family & High-End) (IMAFANAE)

Keywords

• Timber construction
• General contracting
• Concrete construction
• Prefabricated building elements
• Residential construction

Headquarters

HQ city

Pischelsdorf In Steiermark

HQ country

Austria

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Construction Services: General contracting services for residential, commercial, and public construction projects. Services include Hochbau (traditional construction), Holzbau (timber construction), Beton (concrete construction), and single-family home building.
2. Prefabricated Timber Elements: Sale of proprietary Kielsteg building elements and CLT components for large-span roofs and ceilings. Manufacturing and sale of prefabricated wall, floor, and roof panels.
3. General Contractor Services: Full project coordination and management as general contractor (GU) for complex construction projects including residential, commercial, and public buildings.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Kulmer Bau Und Holzbau is an Austrian family-owned construction company offering Hochbau (conventional construction), Holzbau (timber construction), Beton (concrete construction), general contractor services, and single-family home construction. It operates through two entities — Kulmer Bau GmbH and Kulmer Holz-Leimbau GesmbH — and manufactures the patented Kielsteg timber building element system for large-span roofs and ceilings.

Product overview

Kulmer Bau operates as a dual-company construction group consisting of Kulmer Bau GmbH (general construction, concrete) and Kulmer Holz-Leimbau GesmbH (wood/glulam construction). The core differentiated product is the patented Kielsteg system—a high-performance wooden building element for large-span roofs and floors. Services span conventional construction (Hochbau), wood construction (Holzbau), concrete work (Beton), general contracting, and single-family home construction. The company operates from a 130,000 m² facility in Pischelsdorf, Austria, employing approximately 200-240 staff.

Differentiator

Problem solved

Functional benefit

Brands

• Kielsteg: Patented lightweight high-capacity timber structural element system for large-span roof and floor applications, with patented technology in 28 countries. Components consist of timber flanges and plywood/OSB webs, achieving spans up to 30 meters.

Products and services

• Kielsteg Building Elements Patented lightweight, high-load-bearing wooden floor and roof element system using a unique waffle geometry, enabling spans up to 30 meters with up to 70% material savings compared to solid sections. Protected by patents in 28 countries.
• Holzbau (Timber Construction)

Quantifiable outcome

• Up to 70% material savings compared to solid timber sections through Kielsteg honeycomb technology
• +4 more outcomes

Named customers7 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

Three partnerships are on record, tiered core and minor.

• AEE INTECcoreStrategic or Co-development Partner · 3 October 2017Joint development of prefabricated facade elements that integrate entire building services technology. The system allows facade installation on existing buildings without traditional construction disruption. Award-winning innovation recognized with ACR Kooperationspreis 2017.
• Kielsteg GmbHcoreTechnology or IntegrationLicensing and partnership for Kielsteg lightweight timber building elements. Kulmer Holz-Leimbau is the development partner and first producer of Kielsteg construction elements. Since 2006, pilot partnership has realized major projects with Kielsteg elements in upper performance range.
• Holzcluster SteiermarkminorStrategic or Co-development PartnerRegional industry cluster collaboration for knowledge sharing and innovation in timber construction. Hosted cluster meeting in June with 80 guests showcasing large spans, intelligent facade systems, and exceptional timber structures.

Scale indicators9 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• Strabag SE: Austrian-headquartered European construction major with broad building, civil engineering, and infrastructure capabilities. Comparable as an Austrian general contractor peer for commercial, public, and infrastructure projects.
• Porr AG: Austrian construction group active in building construction, infrastructure, and timber construction through subsidiaries. Comparable as an Austrian full-service general contractor peer.
• Stora Enso: Nordic-DACH forest products major with CLT and building solutions divisions. Comparable as a much larger incumbent in engineered timber building elements, addressing overlapping market segments at far greater scale.

Direct peers

• Hasslacher Norica Timber: Austrian sawmill and engineered timber (glulam, CLT) manufacturer with building solutions including large-span structures. Comparable as a DACH-region timber products and structural element peer.
• Mayr-Melnhof Holz: Austrian timber processor and CLT/glulam producer serving European construction markets. Comparable as an Austrian timber manufacturing peer with engineered wood products and prefabricated building components.
• Binderholz: Austrian family-owned timber group producing sawn timber, glulam, CLT, and prefabricated building components. Directly comparable to Kulmer Holz-Leimbau as a peer Austrian timber manufacturer with proprietary engineered wood products and building solutions.
• Wiehag GmbH: Austrian timber construction specialist known for large-span glulam structures including sports halls, commercial and industrial buildings. Closely comparable to Kulmer's large-span timber/Kielsteg business for commercial and industrial clients.
• Rubner Holzbau: South Tyrolean timber construction firm specializing in large-span timber structures, industrial halls, and public buildings. Directly comparable to Kulmer's Holzbau segment for large-span roof and public-sector projects.

Emerging players

• FRANK ECO Solutions: German timber modular construction firm focused on sustainable timber buildings. Comparable as an emerging timber modular construction peer in the DACH region.
• CREE GmbH: German-Austrian hybrid timber construction startup offering prefabricated building systems. Comparable as an emerging DACH player in hybrid timber/modular building systems intersecting with Kulmer's Holzbau and modular investments.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/people/Kulmer-Bau-und-Holzbau/100089224639031
• LinkedInlinkedin.com/company/kulmer-bau-und-holzbau
• Instagraminstagram.com/kulmerbau

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 Kulmer Bau Und Holzbau