What Turris does

Turris is a Dutch technical services company founded in 2006 and headquartered in Garderen, Netherlands, specializing in the installation, inspection, and maintenance of telecommunications and offshore infrastructure at heights and in difficult-to-access locations. The company's offering is structured around three expertises (Data & Telecom, Working at Height, and Offshore) and delivered through five integrated services (Engineering, Project Management, Installation, Inspection & Maintenance, and Rope Access), enabling turnkey A-to-Z project delivery for clients. Its core technology stack relies on IRATA-certified rope access techniques, certified telecom installation crews, drone-assisted inspection, and a proprietary crane-free lifting method called the Act Safe Power Ascender developed in-house.

Turris serves mobile network operators including KPN, Vodafone, and T-Mobile primarily as a subcontractor to main contractors such as VolkerWessels Telecom, and extends its services to offshore energy operators (drilling rigs, offshore wind farms) and industrial clients requiring work at stadiums, high-rise structures, and petrochemical installations. Project scope spans rooftop antennas to 100+ meter lattice masts, 4G and 5G network rollouts, indoor DAS systems, fiber and datacenter installations, temporary telecom towers, and offshore LTE and microwave link deployments. Pricing is project-based with custom quotes; revenue is generated through professional services contracts.

In December 2024, Turris was acquired by APK Group, a diversified Benelux infrastructure conglomerate with approximately 500 million euros in 2024 revenue, and now operates as a subsidiary alongside CIAG (fixed telecom), with the founder Gerben Kamphuis transitioning to a business development role. The company has approximately 50 employees and is expected to generate around 7 million euros in 2024.

Name

Turris

Legal name

Turris

Website

https://turris.nl

Company type

Private

Founded year

2006

Operating status

Operating

Headcount range

11–50 employees

Short description

Turris is a Netherlands-based technical services firm that delivers rope access, installation, inspection, and project management for telecom and offshore clients, serving Dutch mobile operators, offshore energy operators, and industrial customers through certified working-at-height crews.

Ownership category

akta.pro rank

Headquarters

HQ city

Garderen

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering Services: Custom engineering from technical inspection on location to drawings and calculations. Includes technical control, cost estimation, and project planning from sketch to execution.
2. Project Management: Project leadership providing overview, management, control, and communication. Project manager serves as single point of contact from beginning to end.
3. Installation Services: Installation of telecom equipment, antennas, 4G/5G networks, WiFi networks, fiber optic networks, and datacentre installations performed by certified technicians.
4. Inspection and Maintenance: Periodic inspection and maintenance of installations and structures. Includes height inspections with cranes, drones, or Rope Access techniques for steel or concrete structures and associated equipment.
5. Rope Access Services:

Go-to-market motion2 records

Distribution channels3 records

Marketing channels3 records

Core offering

Turris is a Dutch technical services company that delivers end-to-end A-to-Z solutions for mobile telecom infrastructure, working-at-height tasks, and offshore installations. Its offering combines engineering, project management, installation, inspection and maintenance, and IRATA-certified Rope Access services for telecom operators (e.g., KPN, Vodafone, T-Mobile), offshore energy operators, and industrial clients across the Netherlands.

Product overview

Turris is a technical services company offering a unified portfolio of specialized services centered on three core expertises: Data & Telecom, Working at Height, and Offshore. The offering is structured as a complete A-to-Z service process comprising five integrated services: Engineering, Project Management, Installation, Inspection & Maintenance, and Rope Access. Key products include transmission towers (ranging from 2-meter rooftop to 100+ meter lattice towers), 4G/5G network installations, indoor network solutions (DAS, WiFi, fiber), data center infrastructure, and temporary telecom towers. Turris serves telecom providers through main contractors, specializing in challenging locations and offering proprietary hoisting techniques like the Act Safe Power Ascender for crane-free lifting. The company operates as part of the APK Group following acquisition in December 2024.

Differentiator

Problem solved

Functional benefit

Products and services

• Engineering Technical engineering services for telecom and industrial clients, starting from customer specifications with on-location technical inspections, custom drawings, calculations, technical control, cost estimation, and project planning from sketch through execution.
• Project Management (Projectleiding) Project leadership service providing overview, management, control, and communication through a single point of contact from project start to finish for telecom, offshore, and industrial clients.
• Installation (Installatie) Installation service by certified technicians covering telecom equipment, antennas, 4G/5G networks, WiFi networks, fiber optic networks, and data center installations following technical specifications, proper certifications, and correct materials.
• Inspection and Maintenance (Inspectie en Onderhoud) Periodic inspection and maintenance of installations and structures, including height inspections using cranes, drones, or Rope Access techniques for steel and concrete structures and associated equipment.
• Rope Access Rope Access service using rope techniques to bring IRATA-certified technicians to challenging locations for installation, inspection, and maintenance work where conventional access is not feasible.
• Data & Telecom Projects (4G/5G, Towers, DAS, Datacenters, Temporary Towers) Turnkey Data & Telecom project delivery covering 4G/5G network installations for operators such as KPN, Vodafone, and T-Mobile via main contractors, transmission towers from 2-meter rooftops to 100+ meter lattice masts, indoor DAS systems in stadiums and tunnels, data center copper and fiber optic installations, and temporary telecom towers up to 36 meters.
• Offshore Services (Inspections, Drilling Platforms, Wind Farms) Offshore services including inspections of load-bearing concrete and steel structures using Rope Access, controlled placement and installation of constructions on drilling platforms, antenna installations on offshore wind turbines, and telecom upgrades on installations in the North Sea.
• Hoisting without Crane (Hijsen zonder Kraan / Act Safe Power Ascender) Alternative hoisting service developed by Turris using the Act Safe Power Ascender, providing crane-free load movement solutions in nearly any situation, including difficult-to-reach telecom and industrial locations.

Quantifiable outcome

• Up to 36 meter temporary towers with capacity for three systems
• +1 more outcomes

Named customers5 records

Segments3 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

Two partnerships are on record, tiered core and minor.

• CIAGcoreStrategic or Co-development PartnerCIAG is already part of APK Group in the Netherlands and specializes in fixed telecom installations. Following Turris acquisition, CIAG and Turris will work closely together, with CIAG handling fixed networks (HFC and FttH, coax, copper and fiber) and Turris handling mobile networks (4G and 5G transmission masts). Together they cover the entire Dutch market and provide complete telecom infrastructure services.
• VolkerWessels TelecomminorStrategic or Co-development PartnerTurris supported VolkerWessels Telecom with the construction of an LTE network on the North Sea. Turris provided four technicians with required offshore and IRATA certifications for the project.

Scale indicators5 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Allinq Group: Dutch telecom infrastructure services company providing design, build and maintenance of fixed and mobile networks. Comparable in offering (telecom network rollout and maintenance in NL) and customer base (Dutch telecom operators).
• Skyriders Access Specialists: Dutch rope access specialist offering inspection, installation, and maintenance services at height for telecom, wind, and industrial clients. Directly comparable on rope access service line, certifications, and target segments (offshore, telecom, industrial).
• CIAG: Sister company within APK Group, specializing in fixed telecom installations (HFC, FttH, coax, copper, fiber). Direct peer in Dutch telecom infrastructure services, covering the complementary fixed-network side of the same customers Turris serves in mobile.
• BAM Telecom: Telecom infrastructure arm of Royal BAM Group, active in mobile and fixed network construction in the Netherlands and Europe. Comparable in mobile telecom installation services and direct relationships with Dutch operators.

Broad incumbents

• Croonwolter&dros: Dutch technical services provider (part of VINCI Energies) delivering installation and maintenance for telecom, energy, and industrial clients. Comparable on telecom and industrial working-at-height projects, though with a much broader service portfolio.
• SPIE Nederland: Subsidiary of French technical services group SPIE, offering multi-disciplinary technical services including telecom infrastructure, energy networks, and industrial solutions. Overlaps with Turris on telecom installation but at much broader scale and scope.
• VolkerWessels Telecom: Major Dutch telecom infrastructure main contractor. Functions as both a customer (Turris executes on its offshore LTE projects) and a broader competitor offering end-to-end telecom network deployment services across the Netherlands.

Regional players

• Industrial Access: Belgium-based rope access company providing inspection, installation, and maintenance at height. Comparable on rope access methodology and certifications; regional peer serving Benelux telecom and industrial customers.

Others

• VodafoneZiggo (operational telecom customer): Dutch cable/fiber and mobile operator and one of Turris's end-customers via main contractors. Included as an ecosystem reference — the operator's capex cycle directly drives demand for Turris's installation services.

Emerging players

• Heerema Marine Contractors: Major Dutch offshore construction and engineering contractor. Comparable on the offshore service line where Turris works on drilling rigs and offshore wind farms, though Heerema operates at a vastly larger scale.

Market position

Strengths1 record

Weaknesses1 record

Competitive moat3 records

Key risks5 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/turrisGarderen
• LinkedInlinkedin.com/company/turris-b.v.

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 Turris