Strobox

What Strobox does

Strobox B.V. is a Netherlands-based prefabricated construction company founded in 2021 and headquartered at Hanzeweg 19, Deventer, Overijssel, where it operates a combined workshop and headquarters facility. The company manufactures the StroBOX modular building element, a timber-frame panel filled with locally sourced, compressed straw insulation that can serve simultaneously as wall, floor, roof, interior partition, and floor cassette. Panels are produced to order based on 3D connection detailing and assembled on-site in 1-2 weeks to a wind- and water-tight condition. The system is CO2-negative through carbon-sequestering straw and timber, uses a damp-open membrane to support healthy indoor climate, meets all Dutch Building Decree requirements (insulation value, fire resistance, structural load-bearing), and is positioned as a circular alternative to conventional construction.

Strobox operates a hybrid B2B and B2C go-to-market. The projectbouw channel supplies prefab panels to contractors, project developers, housing corporations, and architects, with documented partners and customers including EcoBouwSalland BV (multi-project residential and reconstruction work), Bouwbedrijf de Kreeft (facade panels, Ede office building), Liberterra Koedijk (visitor center), Hemeltjen (tiny house), and architect Lydia Fraaij (biomimicry showcase). The woningbouw channel serves private homeowners with custom homes, pre-designed collectiewoningen, OptopBOX roof extensions, and turn-key TinyBOX tiny houses developed with Helder Architecten; the latter two are sold via downloadable catalogs. Demand generation uses content marketing, a quarterly newsletter, Open Day experience events, self-builder workshops, and an extensive project portfolio.

Revenue is generated entirely through one-time project sales rather than subscriptions or licensing. Strobox is a founder-owned Dutch private limited company (B.V.) with no disclosed external funding, founded by Roelof Vossebeld and Daan Molkenboer. The company is certified under the Code Sociale Ondernemingen and is pursuing BRL, KOMO, and generic LCA certification for compressed straw in partnership with BuildingBallance and Vakgroep Strobouw. Pricing is project-based and not publicly disclosed, with reference pricing dated Q4 2023.

Name

Strobox

Legal name

Strobox B.V.

Website

https://strobox.nl

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

Strobox B.V. is a Netherlands-based prefab construction company that designs, manufactures, and delivers CO2-negative modular straw-insulated building panels and turn-key tiny houses for contractors, developers, architects, and private homeowners across the Netherlands.

Ownership category

akta.pro rank

Product category

Prefab Biobased Building Systems

NAICS

Prefabricated Wood Building Manufacturing (321992)

SIC

Prefabricated Wood Bldgs & Components (2452)

akta.pro primary industry

Residential Modular & Prefabricated Home Construction (IMAFABAF)

Keywords

• Prefabricated building panels
• Biobased construction
• Straw insulation
• Modular housing
• Circular construction

Headquarters

HQ city

Deventer

HQ country

Netherlands

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Prefab StroBOX Panel and Element Sales: StroBOX manufactures and sells prefabricated building panels (walls, floors, roofs, interior partitions) to construction companies, contractors, and project developers. Panels are constructed to order based on 3D drawings and delivered to the construction site.
2. Turn-key Tiny House Delivery: StroBOX designs and delivers complete turn-key tiny houses including facade cladding, installation work, and plumbing. Customers receive a fully finished, ready-to-move-in dwelling.
3. Custom Residential Woningbouw: StroBOX provides custom-designed StroBOX casing (wind- and water-tight) for residential projects. Customers work with their own architect or StroBOX's network, with StroBOX delivering the prefab structure.
4. OptopBOX (Roof Extension): StroBOX designs and installs pre-fab roof extensions for existing buildings, expanding living space and improving insulation simultaneously.
5. Self-Builder Workshops and Support: StroBOX offers self-build workshops and construction guidance for individuals who wish to finish their StroBOX home themselves.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels6 records

Core offering

Strobox manufactures and sells prefabricated biobased building panels (StroBOX) made of timber frames filled with compressed straw insulation. The panels are delivered to building sites as wall, floor, roof, and interior partition elements for residential and commercial projects in the Netherlands. The company also offers turn-key tiny houses (TinyBOX), pre-designed collection homes, roof extensions (OptopBOX), and self-build workshops.

Product overview

Strobox offers a modular, circular straw-based building system. The core product is the StroBOX — a prefabricated wooden skeleton panel filled with compressed straw, used for constructing walls, floors, roofs, facades, and other structural elements. The product portfolio includes TinyBOX (prefabricated tiny houses delivered turn-key), Collectiewoningen (four pre-designed residential models), and OptopBOX (rooftop additions for existing buildings). Strobox serves both commercial clients (housing cooperatives, contractors, project developers) and private individuals through services including project building, residential construction, building guidance, and self-build workshops. The company is a social enterprise committed to sustainability and CO2-neutral housing.

Differentiator

Problem solved

Functional benefit

Products and services

• StroBOX Prefabricated biobased building panels made of timber frames filled with compressed straw insulation, supplied as wall, floor, roof, and interior partition elements for residential and commercial construction in the Netherlands.
• TinyBOX Turn-key compact dwellings built from StroBOX panels, offered through an online catalog of models such as Cube, Saar, Roef, Loft, Tiny, Open, Mini, and Spa. Designed for individuals seeking sustainable small-footprint housing delivered complete with kitchen and bathroom.
• Collectiewoningen Pre-designed single-family home models offered to private buyers to streamline the self-build process, providing ready architectural concepts that can be built with StroBOX panels.
• OptopBOX Prefab roof extension system using StroBOX panels, enabling an additional floor to be added to an existing building in a short timeframe. Targeted at homeowners and contractors seeking light, fast-to-install roof additions.
• Projectbouw Construction service for larger residential and commercial projects commissioned by housing corporations, developers, and contractors. Strobox assembles buildings on site using its StroBOX prefab panels for multi-unit or non-standard projects.
• Woningbouw Custom residential building service for private clients building a one-off home with StroBOX panels, with timelines typically of one to two weeks for assembly on site.
• Zelfbouw Workshops Hands-on self-build workshops that guide individuals through assembling a StroBOX structure themselves, including the construction of a building for the public benefit in cooperation with a charity.

Quantifiable outcome

• On-site assembly completed in 1-2 weeks to wind- and water-tight condition
• +2 more outcomes

Named customers6 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Four partnerships are on record, tiered core.

• Helder ArchitectencoreStrategic or Co-development PartnerStroBOX collaborated with Helder Architecten to develop two types of tiny house models. Both designs are turn-key dwellings executed in the StroBOX biobased building system.
• BuildingBallancecoreStrategic or Co-development PartnerStroBOX is working with BuildingBallance and Vakgroep Strobouw to develop a BRL (Beoordelingsrichtlijn) for compressed straw, to obtain a KOMO quality declaration and generic LCA for straw-based construction materials.
• Vakgroep Strobouw (Straw Building Sector Group)coreStrategic or Co-development PartnerStroBOX collaborates with Vakgroep Strobouw to establish industry standards (BRL) for compressed straw construction, aiming for KOMO certification and a generic LCA for straw materials.
• EcoBouwSalland BVcoreChannel Partner/ Reseller/ DistributorEcoBouwSalland is a construction partner that builds projects using StroBOX prefab elements. They have completed multiple residential projects including the reconstruction of a burned-down farmhouse in Wijhe.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Emerging players

• PlantPrefab: US sustainable prefab home manufacturer focused on plant-based materials and efficient factory-built housing. Comparable to Strobox as a sustainability-led prefab home company targeting eco-conscious buyers and developers.
• EcoCocon: European straw bale construction system provider focused on high-performance, biobased building envelopes. Comparable to Strobox as a straw-based building system, though operating primarily as a wall-system licensor rather than full home manufacturer.

Broad incumbents

• Binderholz: Large Austrian timber industry group producing engineered wood products, CLT, and prefabricated building components. Comparable to Strobox as a wood-based prefab building materials supplier, though operating at massive scale across multiple wood product categories.

Direct peers

• Baufritz: German prefab eco-home manufacturer using natural, bio-based insulation materials in factory-built timber systems. Directly comparable to Strobox's biobased prefab approach, though at a larger established scale and broader European footprint.
• Finch Buildings: Netherlands-based modular timber building company producing prefabricated, sustainable building solutions for residential and commercial uses. Comparable to Strobox in geographic focus, material choice, and modular prefab delivery model.
• De Groot Vroomshoop: Dutch manufacturer of prefabricated timber-frame building components and modular homes. Directly comparable to Strobox as a Netherlands-based prefab timber system supplier serving residential and commercial construction.
• Haas Fertigbau: German prefab timber-frame home builder delivering factory-built residential projects with energy efficiency focus. Comparable to Strobox as a European prefab timber home manufacturer, though at significantly larger scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/stroboxnl

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 Strobox