Sertum

What Sertum does

Sertum is the independent Dutch registry (Stichting / foundation) for certified maintenance professionals working in real estate, founded in 2004 and headquartered in Valkenswaard, Netherlands. The organization maintains multiple specialized public registers covering the Advisor, Coordinator, and Inspector competency profiles defined in the proprietary 'Maatlat voor Onderhoudskundigen' framework, including registers for BOEI inspectors, NEN-2767 inspectors, NTA-8060 housing inspectors, and Procesbegeleiders for VVE sustainability guidance. Sertum also operates a required Permanente Educatie (PE) continuing-education program as a precondition for maintaining registration, supported by a Mijn Sertum personal dashboard (register.sertum.nl) and the Sertum Community App for registered professionals.

The platform is built on a relational registry database accessible via a public search directory, an e-commerce webshop (supporting iDEAL, Bancontact, and invoice payments via Mollie), and a member portal for profile and PE point management. Core technology components are conventional web infrastructure: a WordPress-based public site, a dedicated registration portal, and a mobile app — no AI/ML capabilities or public APIs are evident. Revenue is generated through (1) one-time registration fees and recurring annual prolongation fees paid by individual professionals; (2) sales of publications such as the Maatlat competency guideline (€19.95) and the annual Wet- en regelgeving pocket guide (€55.00); and (3) paid annual training events such as the Dag van de Wet- en regelgeving (€125 in 2025, €195 in 2026) and the Erkendendag recognition day.

Sertum operates a B2B2C go-to-market: individual professionals register directly via the website and pay recurring fees; employers (housing corporations, real estate managers, engineering consultancies) access the public registry to find certified experts. The organization is supported by an established ecosystem of training providers (Hogeschool Utrecht, Hogeschool Arnhem Nijmegen, HTI-opleidingen, BouwProfs Academie), examination bureaus (BOB-KOB, SCEV), and certification institutes (Hobéon SKO) that align their programs with the Maatlat competency framework.

Name

Sertum

Legal name

Sertum Stichtingsbureau

Website

https://sertum.nl

Company type

Private

Founded year

2004

Operating status

Operating

Headcount range

11–50 employees

Short description

Sertum is the independent Dutch foundation (since 2004) that operates the national public registry certifying real estate maintenance professionals across Advisor, Coordinator, and Inspector disciplines. It serves individual maintenance professionals, housing corporations, and property managers through registration fees, competency publications, and continuing-education programs.

Ownership category

akta.pro rank

Product category

Professional Certification Registry

NAICS

Professional, Scientific, and Technical Services (541)

SIC

Services-Membership Organizations (8600)

akta.pro primary industry

Real Estate, Appraisal & Mortgage (Agent/Broker CE, Appraiser CE) (EDAAALAI)

akta.pro secondary industries

Professional & Occupational Licensing Examination Authorities (EDADAFAD), Construction & Trades Licensure (Contractor, Electrician, Plumber, HVAC CE) (EDAAALAH)

Keywords

• Professional certification registry
• Real estate maintenance
• Competency framework
• Continuing education programs
• Building inspection certification

Headquarters

HQ city

Valkenswaard

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Registration Fees: One-time registration fees for new professionals joining Sertum registers. Annual prolongation costs for maintaining registration.
2. Publications and Products: Sale of publications including the Maatlat voor Onderhoudskundigen (€19.95), Maatlat voor Geregistreerden (€20.00), and the annual Wet- en regelgeving book (€55.00).
3. Permanent Education (PE) Activities: Training sessions and PE activities organized by Sertum-recognized training providers, with some activities offering bundled access for registered professionals.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Sertum operates an independent public registry of certified maintenance professionals (onderhoudsdeskundigen) in the Dutch real estate sector across multiple disciplines including Adviseur, Coördinator, Inspecteur, BOEI inspector/advisor, NEN-2767 inspector, and NTA-8060 woninginspecteur. The foundation verifies professional competencies based on diplomas/certificates, requires ongoing Permanente Educatie (PE) continuing education, sells competency publications (Maatlat voor Onderhoudskundigen, annual Wet- en regelgeving pocket guide), and runs annual training events (Erkendendag, Dag van de Wet- en regelgeving) and a Community App for registered professionals.

Product overview

Sertum is the independent Dutch register for certified maintenance professionals in real estate. The offering consists of a core register system with multiple specialized registers (Advisors, Coordinators, Inspectors across various disciplines including BOEI, NEN-2767, and sustainability), supplemented by a continuing education (PE) program, a Community App for registered professionals, and annual events like the Erkendendag. Sertum also offers publications including the Maatlat voor Onderhoudskundigen (guideline with competency profiles), the annual Wet- en regelgeving pocket guide, and free downloadable knowledge & skills tables. An e-commerce webshop sells publications and training event registrations, while the Mijn Sertum personal dashboard enables professionals to manage their registrations and PE requirements.

Differentiator

Problem solved

Functional benefit

Products and services

• Sertum Registers Public registers of certified maintenance professionals across multiple real estate maintenance disciplines: Erkend Onderhoudskundig Adviseur, Erkend Onderhoudskundig Coördinator, Technisch Beheerder Vastgoed, Erkend Onderhoudskundig Inspecteur, Inspecteur NEN-2767, Woninginspecteur NTA-8060, Gecertificeerd Onderhoudskundig Inspecteur BOEI, BOEI-Adviseur, and Procesbegeleider VVE. For individual professionals seeking certification and employers searching for qualified experts.
• Permanente Educatie (PE) Continuing education program offering knowledge sessions and training activities delivered by Sertum-recognized training providers that allow registered professionals to fulfill mandatory PE points and stay current with regulations, NEN standards (NEN 2767), and industry developments.
• Boekje Wet- en regelgeving 2026 Annual pocket guide (€55.00 excl. BTW) covering current legislation, guidelines, standards, and permits for existing buildings and installations. Authored by Melford and distributed via Sertum.
• Maatlat voor Onderhoudskundigen Guideline publication (€19.95 excl. BTW per copy, with volume discounts) describing standardized competency profiles — Adviseur, Coördinator, and Inspecteur — for maintenance professionals working in real estate management, developed with industry knowledge partners.
• Maatlat voor Geregistreerden Edition of the Maatlat guideline available to registered Sertum professionals at a reduced price (€20.00 excl. BTW, originally €27.50).
• Dag van de Wet- en regelgeving Annual full-day training event (€195.00 excl. BTW for 2026) on Dutch building legislation and regulation for existing buildings and installations, jointly organized by Sertum, Melford, and Building G100.
• Erkendendag Annual half-day recognition event for registered professionals featuring networking and professional development on a current industry theme (2026: circularity), held at Fort Sint Gertrudis te Geertruidenberg.

Quantifiable outcome

• Professionals can demonstrate verified competencies to clients and employers through Sertum registration
• +1 more outcomes

Named customers4 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Nine partnerships are on record, tiered core and major.

• MelfordcoreStrategic or Co-development Partner · 1 January 2025Author of the Wet- en regelgeving book and co-organizer of the annual Dag van de Wet- en regelgeving event. Provides authoritative content on building legislation and regulations.
• Building G100coreStrategic or Co-development Partner · 1 January 2025End-user platform for building automation professionals. Co-organizer of the Dag van de Wet- en regelgeving event with Melford and Sertum.
• Hobéon SKOcoreTechnology or Integration · 1 January 2021Independent certification institute that performs personal certification of maintenance professionals. Certificatieschema Onderhoudskundige Vastgoed governs certification of inspectors. Sertum works with Hobéon for the Gecertificeerd Onderhoudskundig Inspecteur BOEI register.
• BouwProfsmajorStrategic or Co-development PartnerCollaboration for Woninginspecteur NTA-8060 register. BouwProfs Academie provides training and the PE program for housing inspectors. Joint responsibility model defined in cooperation agreement.
• HTI-opleidingenmajorStrategic or Co-development PartnerTraining provider for Woninginspecteur NTA-8060, offering courses in Amsterdam with Maastricht base. Provides PE programs for registered inspectors.
• Hogeschool Utrecht (HU)majorStrategic or Co-development PartnerEducational institution offering BOEI and NEN-2767 related training programs. Works with NVDO for integrated inspector and advisor training. Major training provider for Sertum-certified professionals.
• Hogeschool Arnhem Nijmegen (HAN)majorStrategic or Co-development PartnerUniversity of applied sciences offering training for BOEI inspectors and advisors. Major training provider with courses starting twice yearly in Arnhem.
• BOB Examens (BOB-KOB)majorStrategic or Co-development PartnerExamination bureau for various Sertum registers including Coördinator and Adviseur. Manages exams for Projectleider Beheer en Onderhoud Vastgoed and Asset en Onderhoudsmanager Vastgoed.
• Stichting Comog Examens Vastgoed (SCEV)majorStrategic or Co-development PartnerExamination foundation that administers exams for Onderhoudskundig Coördinator and Onderhoudskundig Inspecteur registers since 2018.

Scale indicators2 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• NEN (Royal Netherlands Standardization Institute): Dutch standards body that develops and maintains standards for the built environment, including NEN 2767 which Sertum's Inspector register is built upon. Both operate as standards/qualification authorities for the Dutch built environment and serve overlapping professional audiences in real estate maintenance.
• TVVL: Dutch professional association for building services professionals including HVAC, climate control, and building installations. Comparable to Sertum as both serve Dutch building services professionals with knowledge sharing, training programs, and professional recognition activities.
• NVDO (Nederlandse Vereniging voor Doelmatig Onderhoud): Dutch Association for Effective Maintenance, focused on maintenance professionals in the Netherlands. Directly comparable as both target the Dutch maintenance professional community; NVDO partners with Hogeschool Utrecht for integrated inspector training, mirroring Sertum's partner ecosystem.
• ISSO: Dutch knowledge institute focused on building services and installations, providing publications, training programs, and knowledge dissemination to building services professionals. Directly comparable to Sertum's PE programs and competency frameworks in the Dutch building services sector.

Others

• Aedes: Dutch trade association representing housing corporations including Woonkracht10, Dunavie, and Mooiland who are Sertum customers. Operates as an industry advocacy body rather than a professional certification body, but serves the same customer base and shapes demand for certified maintenance professionals.
• Bouwend Nederland: Dutch employers' organization for construction and infrastructure companies. Adjacent industry body covering the broader built environment sector that Sertum's maintenance professionals operate within; not a direct peer as it represents companies rather than certifying individual professionals.

Broad incumbents

• RICS (Royal Institution of Chartered Surveyors): Global chartered body for property professionals across real estate, land, and construction. Operates in a similar professional certification and credentialing space but with much broader geographic scope and professional categories than Sertum's narrow Dutch maintenance focus.
• BRE Group: UK-based building science organization offering BREEAM certification, training, and standards for the built environment. Comparable to Sertum's role as a standards and certification authority for building professionals, but operates at much larger scale, broader scope, and includes international market reach.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/SertumRegister
• LinkedInlinkedin.com/company/sertum

Revenue estimate

Valuation estimate

Number of profiles

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 Sertum