Fundex Group

What Fundex Group does

Fundex Group (legal entity: Funderingstechnieken Verstraeten B.V.) is a Dutch family-owned foundation engineering contractor founded in the 1950s by Lex Verstraeten and headquartered in Oostburg, Netherlands. The company specializes in vibration-free ("trillingsvrije") piling and deep foundation solutions for residential, commercial, infrastructure, and energy-sector construction projects, serving as both main contractor and subcontractor across Benelux and selected international markets (Belgium, Germany, Spain, and Sweden). Its customer base consists of large enterprise developers and contractors such as BAM Infra Nederland, Dura Vermeer Bouw Zuid West, K.Dekker Bouw & Infra, Aers Groep, and Kloosterboer, with named projects including BaanTower Rotterdam, NEXUS Leiden, Victoriatoren Eindhoven, and the Eemshaven quay reinforcement.

The company's core offering is a portfolio of proprietary, registered pile systems installed using its own equipment fleet. The flagship Fundex® pile is an earth-displaced concrete pile screwed into the ground using a steel auxiliary tube, preserving surrounding soil structure and enabling installation as close as 0.5 meters to adjacent structures; the Tubex® pile adds a permanent steel tube for high-load applications up to 75+ meters depth. Supporting variants include the Supra® pile (material-optimized), Twin® pile (pipe pile wall for slope stabilization), Vibrex®/Super Vibrex® piles (rammed installation), Fundex® Tension Anchors, Bored Multi-shafts®, and the Fundex® Energy Pile, which integrates geothermal heat exchange into foundation work. The fleet is operated and maintained by Fundex Materieel Dienst and includes the F4500, F15, F3500, F16SE, CD20E (electric), and the recently ordered TTD50 zero-emission machine. Quality assurance is performed via static, ultrasonic, and dynamic load testing, and Fundex also develops proprietary geotechnical software (CPTex).

Fundex operates a project-based contracting business model: revenue is generated through custom-quoted foundation engineering projects (professional services), secured via direct client relationships and project-based bidding, with no publicly disclosed pricing tiers. Geographically, the company operates through wholly-owned regional subsidiaries in the Netherlands (Funderingstechnieken Verstraeten B.V.), Belgium (Fundex Foundations BV), Germany (Fundex Spezialtiefbau GmbH), and Spain (Fundex Special Foundations), supported by an affiliated equipment entity (Fundex Equipment Services). It has held VCA** safety and quality certification since 1996 and is a member of the Dutch NVAF and international DFI. The company owns 100% of the Fundex® and Tubex® trademarks and licenses their use to other foundation companies worldwide through approved drill bits, creating a controlled franchise model around its proprietary techniques. Sustainability positioning is increasingly central: the fleet runs on HVO-100 fuel (90% local CO2 reduction) and is transitioning to zero-emission electric rigs for BREEAM-certified urban projects.

Name

Fundex Group

Legal name

Funderingstechnieken Verstraeten B.V.

Website

https://fundex.nl

Company type

Private

Founded year

1950

Operating status

Operating

Headcount range

11–50 employees

Short description

Fundex Group is a Dutch family-owned foundation engineering contractor that designs and installs proprietary vibration-free Fundex® and Tubex® piling systems for residential, commercial, infrastructure, and energy-sector projects across Benelux, Germany, and Spain, serving enterprise clients like BAM Infra and Dura Vermeer.

Ownership category

akta.pro rank

Headquarters

HQ city

Oostburg

HQ country

Netherlands

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Foundation Engineering Services: Project-based contracting services for foundation installation across construction sectors including residential, commercial, industrial, infrastructure, and specialized applications. Revenue generated through direct project contracts as main contractor or subcontractor in Benelux and international markets.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Fundex Group is a foundation engineering contractor that designs and installs vibration-free and conventional piling systems for residential, commercial, industrial, and infrastructure projects. Its portfolio includes proprietary Fundex®, Tubex®, Supra®, Twin®, and Vibrex® pile systems installed using a fleet of in-house drilling rigs. The company also delivers tension anchors, bored multi-shafts, geothermal energy piles, and associated foundation engineering services as both main and subcontractor across Benelux and select international markets.

Product overview

Fundex Group is a foundation specialist offering a comprehensive portfolio of patented, multifunctional foundation techniques. The core offering centers on vibration-free pile systems including the Fundex® pile (earth-displacing concrete pile screwed into ground), Tubex® pile (with permanent steel tube), Supra® pile (optimized material usage), Twin® pile (pipe pile wall for slope stabilization), Vibrex®/Super Vibrex® piles (rammed installation), and combo variants with grout injection. Additional offerings include the Fundex® Energy Pile for geothermal integration, bored multi-shafts for various applications, and tension anchors. The company also operates a modern machinery fleet (F4500, F15, F3500, F16SE, CD20E electric, TTD50) managed through its Equipment Services division. Quality assurance is maintained through static, ultrasonic, and dynamic testing. Fundex also develops proprietary software CPTex and applies AI in foundation engineering.

Differentiator

Problem solved

Functional benefit

Products and services

• Fundex® Pile A vibration-free, earth-displacing concrete pile screwed into the ground using a steel auxiliary tube, providing controlled installation with minimal impact on surrounding structures. Used for residential, commercial, and infrastructure foundation projects.
• Fundex® Pile with Grout Injection A vibration-free concrete pile installed with simultaneous mortar injection through the steel auxiliary tube, providing highly controlled installation and reliable foundation performance in complex ground conditions.
• Fundex® Combo Pile with Grout Injection A hybrid foundation combining a precast concrete element with an in-situ concrete pile section, enabling efficient static load transfer while remaining vibration-free.
• Tubex® Pile A vibration-free, earth-displacing concrete pile with a permanently installed steel tube that remains in the ground as a structural component, providing additional stability and protection.
• Tubex® Pile with Grout Injection A vibration-free pile combining a permanent steel tube with additional mortar injection during installation, providing high control over ground interaction and optimal load transfer.
• Supra® Pile An efficient foundation solution with optimized material usage, achieving savings in concrete and reinforcement without compromising performance.
• Twin® Pile A vibration-free pipe pile wall consisting of screwed steel tubes with intermediate plates and mortar encapsulation, creating a closed, stable system for foundation and slope stabilization in excavations, basements, and tight-space projects.
• Vibrex® Pile An earth-displacing concrete pile installed using a rammed steel auxiliary tube, enabling rapid and efficient installation with high working speed on site.
• Super Vibrex® Pile A rammed, earth-displacing concrete pile installed with a steel driving tube, providing a robust foundation solution with high load-bearing capacity for larger structures or difficult soil conditions.
• Fundex® Tension Anchor with Grout Injection A vibration-free anchoring system developed specifically for tension forces, installed by screwing the anchor into depth with a steel auxiliary tube while simultaneously injecting grout.
• Fundex® Energy Pile A foundation pile integrated with a geothermal heat exchange system; water circulates through piping in the reinforcement cage to absorb geothermal heat or release building heat. Uses 20x less energy for cooling and 5x less for heating compared to traditional HVAC.
• Bored Multi-shafts® Precisely bored multi-shafts made from concrete or steel for foundation work as well as functional applications such as water treatment, storage, parking, and process waste containment.
• Fundex Foundation Engineering Contracting Services End-to-end foundation engineering contracting services performed as main contractor or subcontractor across residential, commercial, industrial, and infrastructure projects in Benelux and internationally; includes advisory, geotechnical study, project execution, and quality testing.
• Fundex Materieel Dienst (Equipment Services) Internal equipment services division that manages and maintains the Fundex fleet of large and small drilling rigs, including the electric CD20E for small spaces and the zero-emission TTD50 for clean-site operations.

Quantifiable outcome

• Vibration-free operation enables work within 0.5 meters of adjacent structures
• +4 more outcomes

Named customers6 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature12 records

Partnerships

Four partnerships are on record, tiered core and minor.

• Fundex Equipment B.V.coreTechnology or IntegrationEquipment supplier for Fundex machinery and drilling technologies. Affiliated company supplying specialized foundation equipment.
• CEMS: CRUX Engineering MicroServices BVminorImplementation/ SI/ Consulting PartnerGeotechnical engineering consulting partner providing specialized expertise.
• GreenerminorStrategic or Co-development PartnerCollaboration partner on sustainable construction initiatives including zero-emission F4800E trial at NEXUS project in Leiden.
• Stichting LeergeldminorOthersCharity organization supported during Fundex 70th anniversary celebration. Donation of €7,000 presented after anniversary party.

Scale indicators9 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Heijmans: Dutch construction and development company with in-house foundation and piling capabilities serving Dutch and Belgian markets. Overlaps with Fundex on residential and commercial foundation work in the Benelux core geography, though it is a diversified generalist.
• Strabag: Austrian-headquartered major European construction group with foundation engineering among its broad service portfolio. Operates in Benelux and DACH regions that overlap with Fundex's footprint, but is a broad incumbent rather than a focused piling specialist.
• Besix Group: Belgian-based international construction group that owns Franki Foundations. Operates foundation, marine, and infrastructure works across Benelux, Middle East, and Africa, making it a broad incumbent with foundation capabilities that overlap with Fundex's territory.

Direct peers

• Bauer AG: German-headquartered global foundation specialist offering piling, ground improvement, and specialized foundation equipment. Directly comparable to Fundex in vibration-free and driven piling methods, with similar European customer base in construction and infrastructure.
• Menard: French ground improvement specialist (Vinci subsidiary) focused on soil reinforcement, stone columns, and vibration-related techniques. Comparable in specialty geotechnical contracting with focus on ground treatment adjacent to Fundex's piling core.
• Franki Foundations: Belgian foundation specialist (Besix subsidiary) with direct operations in Benelux offering driven piles, screwed piles, and ground improvement. Most direct Benelux-based peer to Fundex with overlapping project geography and customer base.
• Keller Group: UK-based global geotechnical contractor providing ground engineering and foundation services across infrastructure, industrial, and commercial sectors. Closely comparable business model to Fundex with overlapping piling, ground improvement, and specialty foundation offerings.
• Trevi Group: Italian foundation engineering specialist active in soil consolidation, piling, and underground works worldwide. Direct peer in specialized foundation contracting with similar project-based service model and European heritage.
• Soletanche Bachy: French foundation specialist (Vinci Construction subsidiary) operating globally in deep foundations, ground improvement, and underground structures. Directly comparable in foundation methods, with broader geographic and balance-sheet scale.

Emerging players

• VSL International: Specialty post-tensioning and foundation systems provider (Bouygues Construction subsidiary) active in structural foundations. Adjacent peer with partial overlap in deep foundation solutions and similar European infrastructure customer base.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/fundexgroup
• Facebookfacebook.com/fundexgroup
• LinkedInlinkedin.com/company/fundex-piling-group
• Instagraminstagram.com/fundexgroup

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries5 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 Fundex Group