What Voorbij Prefab does

Voorbij Prefab B.V. is a Dutch prefabricated concrete manufacturer founded in 1935 and operating since 1996 as a subsidiary of TBI Holdings B.V. From its hypermodern, robotised factory at Siciliëweg 61 in the Western Harbor Area of Amsterdam, the company produces CO2-reduced prefab concrete shells (casco's), structural elements, and industrial components including transformer stations, counterweights, foundation piles, and street furniture. Its flagship product lines are the Groene Voorbij Casco (with and without integrated insulation, 44% CO2 reduction vs 2020 baseline, classified 'dark green' under the Betonakkoord), the Impakt Beton formulation (45 kg CO2/m3, approximately 75% reduction vs traditional concrete, using biochar for permanent carbon storage), and the NEXT level casco system combining Impakt Beton walls with VBI's near-cementless channel slab floors. Designs are prepared in BIM/Revit and CCAD, and concrete mixes are developed and tested in-house alongside KIWA and Concrefy certification. In September 2024, Voorbij Prefab became the first prefab housing factory in the Netherlands to receive the KOMO-certificate BRL 2800 for the certified installation of structural prefab concrete elements.

The company sells directly on a project basis to Dutch general contractors, housing corporations, and developers — including Koopmans Bouwgroep, ERA Contour, Hazenberg Bouw, Bolton Bouw, Heijmans, Bouwcombinatie MAR'CS, and housing corporation Vivare — with many of these being sister companies within the TBI Holdings group and co-development partners in the NEXT level casco consortium alongside TBI WOONlab and VBI. Pricing is not publicly disclosed and is determined per project through commercial quotes, with cao Betonproducten employment terms. Commercial leadership sits with Commercieel Manager Floris van Dam; statutory direction moved from Dorien Staal (now at Dura Vermeer) to Alexander van Tintelen in September 2024. Revenue is not publicly disclosed, but project evidence (notably the 293-unit De Kreekvelden Almere contract running 2024-2026) and headcount of approximately 100-130 employees point to a mid-sized Dutch industrial building-products operator.

Voorbij Prefab is positioned around the convergence of three Dutch market drivers: an acute housing shortage, the Betonakkoord and EU CO2 mandates pushing concrete decarbonisation, and the Wet Kwaliteitsborging voor het bouwen (Wkb) tightening on-site quality liability. Its competitive proposition is the integration of low-carbon materials chemistry, robotised serial production with millimetre tolerances, and certified on-site installation under a single-roof supplier, enabling faster, climate-compliant construction for clients targeting Paris Proof and MPG/BENG certifications. The company's stated ambition is CO2-neutral concrete by 2030 and CO2-negative thereafter, pursued via proprietary mixes, the NEXT level casco consortium, and a TNO-led research partnership on alternative binders and recycled aggregates.

Name

Voorbij Prefab

Legal name

Voorbij Prefab B.V.

Website

https://voorbijprefab.nl

Company type

Private

Founded year

1935

Operating status

Operating

Headcount range

51–100 employees

Short description

Voorbij Prefab is a Dutch subsidiary of TBI Holdings that manufactures CO2-reduced prefabricated concrete shells (Groene Voorbij Casco, Impakt Beton, NEXT level casco) in a robotised Amsterdam factory, selling project-based to Dutch general contractors, housing corporations, and developers.

Ownership category

akta.pro rank

Product category

Prefabricated Concrete Building Shells

NAICS

Structural Steel and Precast Concrete Contractors (23812)

SIC

Concrete Products, Except Block & Brick (3272)

akta.pro primary industry

Precast Concrete Products (IMADAAAB)

Keywords

• Prefab concrete manufacturing
• CO2-reduced concrete
• Building shell prefab
• Structural concrete elements
• Certified concrete installation

Headquarters

HQ city

Amsterdam

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Prefab Concrete Shell Sales: Sale of prefabricated concrete shell units (casco's) and structural elements for residential and industrial construction. Products include Groene Voorbij Casco's with and without insulation for ground-bound housing, stacked housing walls, industrial products (transformer stations, counterweights, street furniture), and foundation piles. Revenue is project-based, tied to construction contracts.
2. Certified Installation/Montage Services: Full certified installation of prefab concrete shells at construction sites, performed under KOMO-certificate BRL 2800. Complete turnkey solution from production to on-site installation, providing full de-risking for clients.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Voorbij Prefab manufactures and supplies prefabricated concrete building shells (casco's) and structural elements for the Dutch residential and industrial construction sectors. Products include the Groene Voorbij Casco line (CO2-reduced prefab walls with optional integrated insulation), stacked residential casco's for multi-story housing, and industrial concrete products such as transformer stations, counterweights, foundation piles, and street furniture. The company also provides certified on-site installation under the KOMO BRL 2800 quality mark, offering complete factory-to-assembly solutions.

Product overview

Voorbij Prefab is a prefab concrete manufacturer offering a portfolio of products for two market segments: residential construction (woningbouw) and industry. The core residential product is the Groene Voorbij Casco line (green casing with insulation), available for both ground-bound and stacked residential construction. The company produces CO₂-reduced concrete products, with the latest innovation being the NEXT level casco system combining Impakt Beton walls with CO₂-reduced floors from partner VBI. For industry, the company produces transformer stations, counterweights, street furniture, and foundation piles. The company operates from a hypermodern, robotized factory in Amsterdam and is part of TBI Holdings.

Differentiator

Problem solved

Functional benefit

Brands

• Groene Voorbij Casco: Prefab concrete casco's produced with CO2-reduced concrete, registered in the Nationale Milieudatabase (NMD). These are the company's flagship sustainable building shell products for residential construction.
• Impakt Beton
• NEXT level casco

Products and services

• Groene Voorbij Casco (residential prefab concrete shell) Prefab concrete shells for residential construction made with CO2-reduced concrete, available with or without integrated insulation in wall thicknesses of 100-250mm. Used by Dutch general contractors and developers for ground-bound housing, social rental housing, and senior housing. Registered in the Nationale Milieudatabase (NMD) with category 1 data.
• Gestapelde Woningbouw Casco's (stacked residential shells) Prefab concrete shells for stacked multi-story residential construction up to 7+ floors using CO2-reduced concrete. Enables apartment buildings and social housing with reduced carbon footprint. Wall thicknesses from 100-250mm, registered in the NMD.
• NEXT level Casco Ultra-low CO2 prefab shell system combining Impakt Beton walls with CO2-reduced floors from partner VBI and biobased carbon storage via biochar. The lowest CO2 footprint prefab casing in the Netherlands, already meeting 2050 climate targets today. Co-developed with TBI WOONlab, VBI, Hazenberg Bouw, ERA Contour, and Koopmans Bouw.
• Industrial Concrete Products (transformer stations, counterweights, street furniture, foundation piles) High-quality industrial concrete products including transformer stations (transformatorhuisjes), counterweights (contragewichten), foundation piles (heipalen), and street furniture (straatmeubilair). Produced in the automated Amsterdam factory using innovative in-house developed concrete mixtures.
• Certified Installation / Montage Services (BRL 2800) Full certified on-site installation of prefab concrete shells at construction sites, performed under KOMO-certificate BRL 2800. Provides a turnkey solution from production to on-site installation, de-risking clients and reducing on-site supervision needs.

Quantifiable outcome

• CO2 reduction of 44% achieved since 2021 vs 2020 baseline; Impakt Beton achieves 75% reduction to 45 kg CO2/m3
• +4 more outcomes

Named customers7 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

Feature6 records

Partnerships

13 partnerships are on record, tiered core and minor.

• TNOcoreStrategic or Co-development Partner · 9 December 2021Research consortium led by TNO studying further concrete sustainability. TNO coordinates the knowledge and innovation programme Emissieloos Bouwen (Emission-free Construction), partially funded by the Ministry of BZK. Research focuses on alternative binders, ultra-fine recycled concrete fines, calcined clay, and integration of demolished concrete in new mixes.
• BTE GroepminorStrategic or Co-development Partner · 9 December 2021Participating company in the TNO-led consortium for sustainable concrete research (December 2021). Contributes expertise in concrete production and processing to the joint research on alternative binders and further CO2 reduction.
• Twee "R" Recycling GroepminorStrategic or Co-development Partner · 9 December 2021Participating recycling company in the TNO-led consortium for sustainable concrete research (December 2021). Supplies recycled concrete aggregate (betongranulaat) for use in new concrete mixes. Renewi is mentioned as a neighbour providing recycled concrete materials.
• TBI Holdings B.V.coreStrategic or Co-development PartnerParent company of Voorbij Prefab since 1996. TBI is one of the largest Dutch technical, construction, and infrastructure groups. Provides capital for innovation investment, robotisation, and R&D. Voorbij Prefab operates as an independent entity under TBI with short lines to 17 sister companies and can collaborate directly with them on projects.
• VBIcoreStrategic or Co-development PartnerVBI supplies (nagenoeg) cementloze (near-cementless) channel slab floors that halve CO2 emissions vs traditional channel slab floors. Together with Voorbij Prefab's Impakt Beton walls, VBI's floors form the NEXT level casco — the prefab shell with the lowest CO2 footprint in the Netherlands.
• TBI WOONlabcoreStrategic or Co-development PartnerTBI WOONlab (TBI innovation lab) co-initiated and contributed to the development of the NEXT level casco consortium. Aims to accelerate sustainability in residential construction through collaborative innovation.
• Hazenberg BouwcoreStrategic or Co-development PartnerTBI construction company partner in the NEXT level casco consortium. First application of NEXT level casco at project Beekhof in Roosendaal (4 homes). Contributed expertise in construction execution and building practice to the co-development.
• ERA ContourcoreStrategic or Co-development PartnerTBI construction company partner in the NEXT level casco consortium. Also a long-standing customer of Voorbij Prefab for Groene Voorbij Casco's. Awarded Voorbij Prefab the Groene Hart Award in 2025. Currently building Linck in Den Haag and a project on Nieuwe Defensieterrein Utrecht with NEXT level casco.
• Koopmans BouwgroepcoreStrategic or Co-development PartnerTBI construction company partner in the NEXT level casco consortium. Long-standing project partner for Groene Voorbij Casco's (De Kreekvelden Almere, Het Slingerbos Ophemert). Started a project of 46 ground-bound homes in Baak using NEXT level casco/Impakt Beton from October 2024, proving scalability to serial housing.
• ABTminorStrategic or Co-development PartnerEngineering partner that collaborated with Voorbij Prefab's specialist team to develop the Green Concrete mix with 44% CO2 reduction (2020). Contributed structural engineering expertise to validate the hybrid mix for construction applications.
• KIWAcoreOthersCertification body that certified Voorbij Prefab's CO2-reduced concrete mixes and granted the KOMO-certificate BRL 2800. Working with Concrefy for testing and validation of new concrete formulations.
• ConcrefycoreTechnology or IntegrationTesting and certification partner that worked with Voorbij Prefab to validate the hybrid concrete mixture, including testing protocols for demoulding strength, durability, and CO2 performance. Certified the concrete formulations alongside KIWA.
• EcocemminorStrategic or Co-development PartnerCement/materials supplier referenced in interview with betontechnoloog Ruud Out (September 2025). Ecocem produces cement alternatives and supplementary cementitious materials (e.g., ground granulated blast furnace slag) that are used in Voorbij Prefab's hybrid concrete mixes.

Scale indicators13 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Spaansen: Dutch precast concrete manufacturer producing walls, floors and complete prefab building systems for residential construction. Direct competitor in the Dutch prefab concrete market with comparable product offerings.
• Byldis: Dutch manufacturer of precast concrete facades, sandwich panels, and structural elements for residential and non-residential projects. Direct competitor in prefab concrete shells and architectural concrete for Dutch housing developers.
• Bruil: Dutch prefab concrete producer focused on residential and utility construction, including precast walls, floors and structural elements. Direct competitor in the Dutch prefab concrete market for housing developers and contractors.
• Holcon: Dutch manufacturer of precast concrete elements including walls, columns, beams and structural frames. Direct competitor in prefab concrete shells and structural components for Dutch residential construction.
• VBI: Dutch manufacturer of precast channel slab floors and CO2-reduced floor systems. Direct strategic partner for NEXT level casco and direct peer in the Dutch prefab concrete elements market serving residential developers.
• Kijlstra: Leading Dutch precast concrete manufacturer producing walls, floors, columns and infrastructure elements. Direct competitor in residential prefab concrete shells, with comparable focus on serial housing and Dutch construction-company customers.
• Hurks Groep (Hurks Prefab): Dutch construction group with an integrated prefab concrete factory serving residential, commercial and utility building. Direct competitor offering prefab concrete shells and structural elements across the Netherlands.

Broad incumbents

• Consolis: Pan-European precast concrete group offering structural elements, building systems and infrastructure products. Operates at much larger scale and broader geography than Voorbij, with overlapping product categories in precast concrete walls and floors.
• Royal BAM Group: One of the largest Dutch construction groups with in-house precast concrete capacity and as a buyer of prefab concrete shells. Overlaps with Voorbij both as a potential supplier/customer relationship and as a broad construction-industry incumbent.

Emerging players

• Van Nieuwpoort Groep: Dutch concrete and aggregates group with growing involvement in sustainable concrete solutions and prefab elements. The previous employer of Voorbij's current CEO, and increasingly active in the same CO2-reduced concrete market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/voorbij-prefab-beton-b-v-

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 Voorbij Prefab