What IBVreeswijk does

IBVreeswijk B.V. is a privately held, family-owned structural and construction engineering consultancy headquartered in Weerselo, in the Twente region of the Netherlands. Founded in 1986 by Frans Vreeswijk as Adviesburo Vreeswijk and led since 2009 by his son Bas Vreeswijk (TU Delft, Civiele Techniek, 2003), the firm delivers structural calculations and construction engineering advice for residential, commercial, agricultural, and special-purpose buildings. Its service portfolio covers structural analysis in timber (including LVL/Kerto and CLT applications), concrete, and steel, plus specialized lines in tent wind-load calculations, solar-panel and solar-park structural assessments, tiny houses and circular modular timber housing, and heritage/rijksmonument restoration. The firm differentiates through deep expertise in wood-connection design and 3D modeling (RFEM finite element analysis, 3D CFD wind simulations for tents) and through a flagship 2023 project role as main structural engineer for the Xylino Almere modular timber development (93 apartments + 10 houses).

The firm operates a direct-sales B2B professional services model, acquiring projects through relationships with architects, contractors, housing corporations, and direct private clients. Pricing is quote-based (percentage of construction sum, fixed fee, or hourly) with a 7-person team including two constructors, a modeleur, and administration. Customers are diversified across government municipalities (Gemeente Oldenzaal), housing associations (Woningcoöperatie WBO Oldenzaal), enterprises (Koopmans Bouwgroep, Fenix Industries, Sustainer Homes, Aldi Enschede), agricultural SMBs (Fam. Kolthoff), heritage non-profits (Stichting Monumentale Tribune Heracles 1924), and small hospitality/healthcare venues. Revenue is project-based fees in euros, with no disclosed financial metrics. The go-to-market is relationship-led within the Twente region and expanding across the Netherlands, Belgium, and Germany (evidenced by German-language job postings).

Geographically, IBVreeswijk is rooted in the Twente agricultural region with a project footprint extending across the Netherlands and Benelux (including a 2021 engineering partnership with Belgian LVL manufacturer Dupac). It markets through its website project portfolio, LinkedIn and Facebook pages, and event participation (Dag van de Bouw). Ownership remains concentrated with the Vreeswijk family, with no disclosed external investors, no funding rounds, and no M&A activity on record.

Name

IBVreeswijk

Legal name

IBVreeswijk B.V.

Website

https://ibvreeswijk.nl

Company type

Private

Founded year

1986

Operating status

Operating

Headcount range

1–10 employees

Short description

IBVreeswijk is a family-owned Dutch structural engineering consultancy in Twente delivering calculations and advice for timber (including LVL), concrete, and steel buildings. Its 7-person team serves residential, commercial, agricultural, and heritage projects across the Netherlands, Benelux, and now Germany.

Ownership category

akta.pro rank

Product category

Structural Engineering Consultancy

NAICS

Engineering Services (541330)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Structural Wood Repair & Framing (Studs, Joists, Subfloor Patching) (HSAGABAF)

akta.pro secondary industries

Post, Footing & Foundation Work for Outdoor Structures (HSAIAJAL), Bridge Rehabilitation & Structural Strengthening (Deck Replacement, Seismic Retrofit) (IMAFAEAK)

Keywords

• Structural engineering services
• Construction consultancy
• Timber construction calculations
• Building permit calculations
• Structural design services

Headquarters

HQ city

Weerselo

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Structural Engineering Consulting: Professional engineering services for construction projects including structural calculations, construction drawings, and technical advice for residential, commercial, agricultural, and special projects. Revenue is generated through project-based fees, typically calculated as percentage of construction sum, time-based hourly rates, or fixed project fees.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels4 records

Core offering

IBVreeswijk is a structural and construction engineering consultancy providing structural calculations, construction drawings, and technical advice for wood, concrete, and steel constructions. Services span residential, commercial, agricultural, and special projects including tent wind-load analysis and heritage restoration, delivered as project-based engineering services across the Netherlands and Benelux.

Product overview

IBVreeswijk is a structural and construction engineering consultancy firm offering calculations and advice for wood, concrete, and steel constructions. The company operates as a single-service consultancy rather than a software product platform. Their core offering consists of structural calculations for buildings and constructions, with specialized services in wood construction (particularly LVL and CLT), agricultural buildings, tent safety calculations, utility buildings, residential construction, and solar panel installations. The company also handles special projects including heritage restorations and innovative modular construction. Founded in 1986 and based in Weerselo, Twente, they serve clients throughout the Netherlands and Benelux.

Differentiator

Problem solved

Functional benefit

Products and services

• Structural Calculations for Wood, Concrete & Steel Core structural engineering calculations and construction advice for wood, concrete, and steel constructions, serving residential and commercial building projects.
• Agricultural Buildings Specialized structural services for agricultural buildings including livestock stalls and machine storage facilities, with 35 years of regional experience.
• Wood Construction (Houtbouw) Specialized wood construction design and calculation services, including LVL (Laminated Veneer Lumber) and CLT applications, focusing on sustainable building with natural materials.
• Tent Structural Calculations Structural safety calculations for aluminum tents and marquee tents, including wind load analysis and anchoring requirements for event permits.
• Solar Panel Installation Support Structural calculations to determine if solar panels can be installed on buildings, including checks for flat roofs and reinforcement recommendations when needed.
• Utility Buildings (Utiliteitsbouw) Structural engineering services for commercial and public buildings including company halls, healthcare facilities, hospitality venues, office buildings, and schools.
• Residential Construction (Woningbouw) Structural advice for new construction and renovations of residential buildings including apartments, individual homes, and housing complexes.
• Special Projects (Bijzondere projecten) Unique and specialized structural engineering projects including heritage building restorations and innovative construction solutions like Kerto-Ripa LVL floor and roof elements.
• Tiny Houses Structural engineering services for tiny house constructions, including projects with circular wooden modules.
• Solar Parks Structural support for solar park installations, calculating construction requirements for large-scale solar panel arrays.

Quantifiable outcome

• Xylino project achieves 90% CO2 reduction compared to steel/concrete construction using LVL timber modules
• +3 more outcomes

Named customers10 records

Segments6 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Ten partnerships are on record, tiered core and supporting.

• Koopmans BouwgroepcoreStrategic or Co-development Partner · 1 September 2023Main contractor for Xylino Almere project - largest project to date for IBVreeswijk. Koopmans Bouwgroep is building 93 apartments and 10 houses using modular timber construction. IBVreeswijk serves as main structural engineer.
• Arons en Gelauff architectencoreStrategic or Co-development Partner · 1 September 2023Architectural firm for Xylino Almere project. Responsible for architectural design of the 5-story modular timber apartment building.
• SustainercoreStrategic or Co-development Partner · 1 September 2023Developer of the modular timber building system used in Xylino project. IBVreeswijk collaborates with Sustainer for structural engineering of wooden modules.
• geWOONhoutcoreStrategic or Co-development Partner · 1 September 2023Supplier of modular timber units for Xylino project. Factory in Wehl (Doetinchem) produces complete wooden modules with installations, kitchen, toilet, and bathroom.
• conStabielsupportingTechnology or Integration · 1 September 2023Sub-contractor for structural engineering on Xylino project. Responsible for concrete basement/parking garage structural work.
• Nieman Raadgevend IngenieurssupportingImplementation/ SI/ Consulting Partner · 1 September 2023Consulting engineers from Zwolle providing advice on building physics and fire safety for Xylino project.
• DupaccoreStrategic or Co-development Partner · 1 January 2021Belgian timber frame factory producing CE-certified Kerto-Ripa LVL floor and roof elements. IBVreeswijk provides engineering for these structural elements. Partnership for specialized timber connections and prefabricated timber components.
• Bouwbedrijf Oude RoelinkcoreImplementation/ SI/ Consulting PartnerConstruction company for carnavalshallen Oldenzaal project. Responsible for placement of prefabricated Kerto timber elements. Long-standing collaboration with IBVreeswijk on multiple projects.
• Dedem ArchitectuurcoreStrategic or Co-development PartnerArchitecture firm for Fenix Industries expansion project. IBVreeswijk works closely with Dedem throughout design phases from preliminary to execution.
• Atelierbart (Bart Verschoor)supportingStrategic or Co-development PartnerArchitect for self-build Oosterwold Almere project. IBVreeswijk developed practical structural plan in collaboration with Atelierbart for self-builder Sasja Voet.

Scale indicators3 records

Recent moves10 records

Expansion highlights5 records

Direct peers

• IMd Raadgevend Ingenieurs: Rotterdam-based structural and civil engineering consultancy of comparable size and scope to IBVreeswijk, serving Dutch developers, housing corporations, and industrial clients with structural calculations for timber, concrete, and steel projects.
• Nieman Raadgevend Ingenieurs: Zwolle-based engineering consultancy already collaborating with IBVreeswijk on the Xylino project, providing building physics and fire-safety advice. Comparable Dutch structural consultancy with similar mid-market positioning.
• Iv-Groep: Dutch multidisciplinary engineering firm with a structural engineering practice serving industrial, infrastructure, and building clients; comparable technical profile though larger in scale and scope than IBVreeswijk.
• Lievense: Mid-sized Dutch engineering consultancy providing structural and civil engineering services with offices across the Netherlands, comparable in offering to IBVreeswijk's multi-material structural calculation practice.
• Pieters Bouwtechniek: Dutch structural engineering firm of similar size offering calculations and construction advice for residential and commercial building projects across the Netherlands, directly comparable in scope to IBVreeswijk.

Broad incumbents

• Witteveen+Bos: Large Dutch engineering consultancy with broad infrastructure, water, and built-environment practices; overlaps with IBVreeswijk in structural engineering for buildings and infrastructure but operates at much larger scale and breadth.
• Arcadis Nederland: Global design and engineering consultancy with Dutch roots, providing structural and sustainable building services; competes for large Dutch real estate and infrastructure projects where IBVreeswijk is also active.
• Sweco Nederland: European engineering consultancy with substantial Dutch operations covering structural, civil, and sustainable building design; competes in the same Dutch building-engineering RFPs as IBVreeswijk at greater scale.
• Royal HaskoningDHV: Largest Dutch-headquartered engineering consultancy, offering structural and building services across infrastructure, water, and industry; competes for major Dutch building projects where IBVreeswijk also bids.
• WSP Netherlands: Global engineering professional services firm with Dutch offices, active in structural and building-services engineering; competes in the same Dutch building-engineering market as IBVreeswijk, particularly on larger developments.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/IBVreeswijk-198633506987116
• LinkedInlinkedin.com/company/ibvreeswijk

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 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 IBVreeswijk