What Siebau Raumsysteme does

Siebau Raumsysteme GmbH & Co. KG is a German manufacturer of customized steel-based outdoor space systems, founded in 1946 in Kreuztal (Siegerland), where it operates its sole production site spanning approximately 17,000 m² with 9,000 m² of production hall and a stated capacity of 10,000+ units per year. The company's product portfolio centers on modular hot-dip galvanized steel construction with powder coating and modular cladding options (Trespa facade panels, wood-look aluminum slats, steel lattice), encompassing carports (single, double, row, with PV-ready roof loading), prefabricated steel garages, Gardenboxx garden sheds, bicycle parking houses (including the Compact row variant), enclosures for bicycles and waste bins, the Multibox, privacy screens, commercial halls, material/storage containers, and entrance canopies (Metall-Vordach). Proprietary concepts include LL+R (Long Life and Recycle) for multi-generational durability and near-total end-of-life recyclability, and the optional BreaTheCity moss-sedum rooftop greening system for temperature regulation and stormwater retention.

The business model is project-based and quote-driven with no public price list: each product is custom-built to specified dimensions, color (extensive RAL and Trespa ranges), and configuration, with revenue generated through one-time product sales bundled with installation delivered through a nationwide Montagepartner (assembly partner) network. Go-to-market combines direct-to-consumer free on-site consultation for private homeowners with an enterprise Key Account motion for housing developers, municipalities, and commercial customers, supported by four regional sales offices in Germany (Hamburg, Celle, Berlin, Halle/Leipzig) and distribution partners Uninorm (Switzerland) and Homefitting/Raumgewinn (Austria). Customers span private individuals, real estate developers (e.g., Avenida Wohnbau, Wohnanlage Kaisergärten), education and childcare facilities, municipalities, hotels, clinics, and emergency services.

The company is privately held under a GmbH & Co. KG structure; shareholders include Dr. Hans Joachim Krüger, Hans Martin Steinseifer, and Wolfgang Neuhoff following the 2008 refounding, with Dr. Hanns Menzel as managing partner. It has held TÜV Nord "Made in Germany" certification since 2015 and is described as market leader in Germany in many product groups. The company has announced integration into the PAUL WOLFF Gruppe, signaling a forthcoming structural change in ownership.

Name

Siebau Raumsysteme

Legal name

Siebau Raumsysteme GmbH & Co. KG

Website

https://siebau.com

Company type

Private

Founded year

1946

Operating status

Operating

Headcount range

51–100 employees

Short description

Siebau Raumsysteme is a German manufacturer (founded 1946, Kreuztal) of customized steel space systems including carports, garages, bicycle parking houses, enclosures, and commercial halls, serving private homeowners, real estate developers, municipalities, and commercial customers across Germany, Switzerland, and Austria.

Ownership category

akta.pro rank

Product category

Steel outdoor space systems

NAICS

Architectural and Structural Metals Manufacturing (3323), Ornamental and Architectural Metal Work Manufacturing (332323)

SIC

Prefabricated Metal Buildings & Components (3448), Fabricated Structural Metal Products (3440)

akta.pro primary industry

Garage, Basement & Attic Organization (HSAFAAAD)

akta.pro secondary industry

Privacy Screens, Lattice & Windbreak Installation/Repair (HSAIAJAJ)

Keywords

• Steel space systems
• Metal carport manufacturing
• Prefabricated steel garages
• Outdoor enclosures
• Bicycle parking structures

Headquarters

HQ city

Kreuztal

HQ country

Germany

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Steel Space Systems Sales: One-time purchase of customized steel space systems including carports, enclosures, garages, equipment houses, and commercial halls. Products are manufactured to order with custom dimensions, colors, and configurations.
2. Installation and Assembly Services: Professional installation services through qualified assembly partners across Germany, included as part of the project delivery.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels6 records

Core offering

Siebau Raumsysteme GmbH & Co. KG designs, constructs, and manufactures custom steel-based outdoor space systems at its Kreuztal facility in Germany. The product portfolio centers on carports, prefabricated garages, enclosures for bicycles and waste bins, garden sheds (Gardenboxx), bicycle parking houses, privacy screens, commercial halls, and storage containers, all built to customer-specified dimensions with galvanized steel construction and optional powder coating, Trespa facade cladding, or wood-look aluminum slats.

Product overview

Siebau Raumsysteme offers a comprehensive portfolio of steel-based outdoor space solutions manufactured exclusively in Kreuztal, Germany since 1946. The product lineup centers on modular steel construction systems including carports (in single, double, and row configurations), enclosures for bicycles and waste bins, prefabricated garages, garden sheds (Gardenboxx series), bicycle parking houses, privacy screens, commercial halls, storage containers, and entrance canopies. Products are designed with unified visual language allowing coordinated outdoor design, feature customizable dimensions (with standard sizes and made-to-measure options), support optional accessories such as photovoltaic installation capability, roof greening (BreaTheCity system), and various cladding materials including wood-look aluminum slats, Trespa facade panels, and steel elements. The company emphasizes sustainable design through its LL+R (Long Life and Recycle) principle, with products built for multi-generational durability using hot-dip galvanized and powder-coated steel.

Differentiator

Problem solved

Functional benefit

Brands

• LL+R Prinzip (Long Life and Recycle): Nachhaltigkeitsprinzip des Unternehmens: Produkte so zu bauen, dass sie auch für Generationen halten. Am Ende des Lebenszyklus können nahezu alle Siebau-Produkte recycled werden.
• BreaTheCity
• Lilibox

Products and services

• Metal Carport (Carport aus Metall) Steel carports in single, double, and row configurations, supporting custom sizing up to 8m width without a center pillar, photovoltaic installation, and optional roof greening. Targeted at private homeowners, housing developers, and commercial property owners.
• Enclosures (Einhausungen) Steel enclosures for bicycles, waste bins, and other items with sliding doors and various privacy screen options including square perforation patterns. Used by residential properties, municipalities, and commercial sites.
• Garden Sheds (Gerätehaus / Gardenboxx) Metal storage sheds and Gardenboxx units available with flat, pent, and gable roofs, with various door configurations and window options. Used by homeowners, schools, daycares, and commercial properties.
• Prefabricated Garage (Fertiggarage) Prefabricated steel garages with flat wall, structured wall (corrugated), and large models for motorhomes, boats, and multiple vehicles. Available with sectional or swing gates. Used by private homeowners and commercial clients.
• Multibox Combined storage unit combining parcel box, waste bin box, and rollator box in customizable configurations. Used at residential properties and multi-family housing developments.
• Bicycle Parking House (Fahrradparkhaus) Bicycle parking structures available in single-wall, insulated, and compact models with double-tier parking racks. Targeted at municipalities, universities, housing developments, and commercial properties.
• Privacy Screens and Enclosures (Sichtschutz / Umhausung) Privacy screen walls and enclosures with single-wall and double-wall configurations, available with or without upper frames for garden and terrace partitioning. Used by residential and commercial customers.
• Commercial Halls (Gewerbehalle) Industrial and commercial halls available in single-wall and insulated configurations, suitable for various commercial applications including vehicle service centers, storage halls, and rental halls.
• Material and Storage Containers (Materialcontainer / Lagercontainer) Material and storage containers with wooden floor for various industrial storage applications. Used by contractors, tradespeople, and commercial sites.
• Metal Canopy (Metall-Vordach) Metal canopy for front doors and entrance areas, available in steel variant with integrated box gutter, quickly mounted and available in multiple RAL colors. Targeted at residential and commercial property entrances.
• Parcel Box (Paketbox) Steel parcel box designed for package delivery and secure outdoor storage. Targeted at residential properties and small commercial premises.

Quantifiable outcome

• Products last for generations with minimal maintenance required
• +1 more outcomes

Named customers4 records

Segments5 records

Ideal customer profiles3 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 regional.

• UninormregionalChannel Partner/ Reseller/ DistributorExclusive distribution partner for Siebau products in Switzerland. Provides local sales and customer support for Swiss customers.
• Homefitting / RaumgewinnregionalChannel Partner/ Reseller/ DistributorDistribution partner for Siebau products in Austria. Represents Siebau in the Austrian market.
• BauInno GmbHregionalChannel Partner/ Reseller/ DistributorExternal sales consultant for Bavaria region (Middle Franconia, Franconia), extending Siebau's sales reach in southern Germany.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Regional players

• Markilux: German premium awning and patio-roof manufacturer. Comparable on the entrance canopy / outdoor-roof category where Siebau has begun expanding with its Vordach product line.
• REKERS Stahlbau: German steel construction specialist producing prefabricated steel halls, frames and structural assemblies. Overlaps with Siebau's Gewerbehalle and structural-steel fabrication capabilities for commercial customers.
• Weinor: German premium manufacturer of awnings, patio roofs and entrance canopies. Comparable on Siebau's newer Vordach and outdoor-roof SKUs for residential buyers, though Weinor's core remains fabric awnings.

Direct peers

• Biohort GmbH: Austrian manufacturer of premium metal garden sheds, bike storage and outdoor storage boxes. Biohort is Siebau's closest direct peer on metal garden sheds and outdoor storage, competing on similar premium design, Made-in-Europe positioning and direct-to-consumer field-sales motion.
• MC-Garagen: German prefabricated metal garage specialist targeting private and small-commercial buyers. Competes directly with Siebau's Fertiggarage SKUs on price, configuration and direct-sales delivery.
• Zapf Garagen: German prefabricated garage manufacturer (concrete and steel). Competes head-to-head with Siebau's Fertiggarage line for private and developer buyers across Germany, with a comparable direct-sales/regional-rep model.

Broad incumbents

• Keter: Global mass-market outdoor storage and shed manufacturer (resin, steel). Competes with Siebau's Gardenboxx range on garden sheds and outdoor storage, but at the lower-price, mass-market end of the category.
• Novoferm: Large European manufacturer of garage doors, industrial doors and door drives — and an existing supplier of sectional garage doors integrated into Siebau's garages. A broad incumbent in adjacent product categories rather than direct competitor on full outdoor space systems.
• Hörmann: Germany's dominant manufacturer of garage doors, industrial doors and building components. A broader incumbent in the same end-use applications (carports, garages, enclosures) where Siebau plays, but operating at much larger scale and across a wider portfolio.

Emerging players

• Palram Applications: Global manufacturer of polycarbonate and outdoor-structure products, including metal-and-polycarbonate outdoor storage and carport kits. An emerging player in adjacent outdoor-structure categories that intersects with Siebau's carport and enclosure lines at lower price points.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Instagraminstagram.com/siebau_raumsysteme
• Pinterestpinterest.de/siebaurs
• Xx.com/siebau_kreuztal
• LinkedInlinkedin.com/company/siebau

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 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 Siebau Raumsysteme