Siza

What Siza does

Siza (Stichting Siza) is a Dutch non-profit healthcare foundation headquartered in Arnhem that delivers care, support, treatment, education, and work-reintegration services to people with physical, intellectual, multiple disabilities, mild intellectual disability (LVB), and non-congenital brain injury (NAH). The organization emerged from the merger of several legacy care foundations that historically managed facilities including the well-known Het Dorp campus (traced to the 1962 Mies Bouwman television fundraiser) and 's Koonings Jaght, and today operates over 100 locations across the Gelderland province, serving approximately 3,500 clients with roughly 2,500 employees.

Siza's service portfolio spans five core categories — Wonen (residential support ranging from independent living to 24-hour group-home care), Begeleiding Thuis (home-based guidance for adults and families), Dagbesteding (day activities), Leren en Werken (education and employment reintegration), and Behandeling (specialist treatment including rehabilitation) — augmented by Logeren (respite care). Specialized, differentiated offerings include the HouVast intervention (recognized by the Dutch Youth Institute NJI) for parents with mild intellectual disability, De Kameleon Onderwijszorggroep (an integrated care-and-education school for children aged 6-18 with severe intellectual disabilities), the Expertisecentrum NAH network for acquired brain injury with interdisciplinary Hersenz treatment modules averaging 1.5 years per client, De Belevenis sensory experience world, and assistive technologies such as VRelax virtual reality relaxation. Underpinning the model are institutionalized methodologies — LACCS, Triple-C, HouVast, Hersenz, BOL/EIM, and PACT — that codify Siza's clinical approach across care settings.

Commercially, Siza operates as a publicly funded care provider rather than a commercial entity. Revenue flows primarily through Dutch statutory frameworks: Wet langdurige zorg (Wlz) for long-term residential care, Wet maatschappelijke ondersteuning (Wmo) for community and home support, Jeugdwet for youth and family services, UWV work-reintegration trajectories, and personal budgets (Pgb). Supplementary income derives from donations and legacies channeled through two affiliated support foundations — Stichting Het Dorp and Stichting Vrienden van Het Dorp — and from named commercial activity at De Belevenis (ticket-based sensory sessions starting at €50). Client acquisition is referral-driven via CIZ indications, municipal Wmo/Jeugdwet decisions, and a central intake function (SizaEntree). The organization partners with school providers, housing corporations, social enterprises, and national knowledge institutes, embedding itself in a multi-stakeholder care ecosystem across Gelderland.

Name

Siza

Legal name

Stichting Siza

Website

https://siza.nl

Company type

Private

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Siza is a Dutch non-profit healthcare foundation headquartered in Arnhem that provides residential, home, educational, treatment, and work-reintegration services to approximately 3,500 people with physical, intellectual, multiple disabilities, mild intellectual disability, and acquired brain injury across more than 100 locations in Gelderland, funded primarily through Dutch statutory healthcare frameworks.

Ownership category

akta.pro rank

Product category

Disability Care Services

NAICS

Residential Intellectual and Developmental Disability Facilities (62321), Residential Intellectual and Developmental Disability, Mental Health, and Substance Abuse Facilities (6232), Services for the Elderly and Persons with Disabilities (62412)

SIC

Services-Nursing & Personal Care Facilities (8050), Services-Home Health Care Services (8082), Services-Social Services (8300)

akta.pro primary industry

Long-Term Care Rehabilitation Centers (HLAFAFAD)

akta.pro secondary industries

Respite Care for Adults with Disabilities / Special Needs (HSABAGAI), Special Needs Adult Day Programs (Developmental/Physical Disabilities, Seniors) (HLADAIAI), Cognitive-Communication & Memory Rehab Therapy In-Home (HSABADAL), Neurorehabilitation Centers (HLAFAFAH)

Keywords

• Disability care services
• Residential support
• Home care services
• Brain injury rehabilitation
• Day activity programs

Headquarters

HQ city

Arnhem

HQ country

Netherlands

HQ region

Europe

Offices56 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Government-Funded Healthcare (Wlz): Funded through the Wet langdurige zorg (Wlz - Long-term Care Act), covering residential care and intensive support for individuals with chronic conditions or disabilities.
2. Municipal Care Funding (Wmo): Funded through the Wet maatschappelijke ondersteuning (Wmo - Social Support Act) for community-based support and home care services.
3. Youth Act Services (Jeugdwet): Services for children and youth funded under the Jeugdwet (Youth Act), including support for families and specialized youth care.
4. Personal Budget (Pgb): Services funded through a personal budget (Pgb), where clients choose and direct their own care providers.
5. UWV Work Reintegration: Work reintegration trajectories funded through UWV (Employee Insurance Agency) for people with disabilities.
6. Donations and Legacies: Donations from individuals and organizations, including inclusion in wills, with funds freely allocated unless a specific destination is designated in a testament. Siza manages two support foundations: Stichting Het Dorp and Stichting Vrienden van Het Dorp.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels10 records

Core offering

Siza delivers integrated care and support services to people with physical, intellectual, multiple disabilities, and acquired brain injury (NAH) through residential living, home guidance, day activities, learning and working programs, clinical treatment, and short-stay respite across more than 100 locations in Gelderland. The organization operates specialized educational care schools, brain injury expertise centers, sensory experience facilities, and adapted-sports programs alongside recognized intervention methodologies such as HouVast, LACCS, and Hersenz.

Product overview

Siza is a Dutch healthcare organization providing comprehensive care and support services to approximately 3,500 people with physical, intellectual, or multiple disabilities and individuals with acquired brain injury (NAH). The organization operates over 100 locations across Gelderland with approximately 2,500 employees. Services include residential living support (ranging from independent living to 24-hour care), outpatient home guidance, day activities, educational support, treatment services, and short-term respite care. Specialized offerings include the HouVast recognized methodology for parents with mild intellectual disabilities, De Kameleon educational care school for children with severe disabilities, Expertisecentrum NAH for brain injury rehabilitation, De Belevenis sensory experience facility, and therapeutic technologies including VRelax virtual reality for stress reduction and various movement technologies.

Differentiator

Problem solved

Functional benefit

Brands

• De Belevenis: A sensory experience world with snoezel rooms for people and/or children with multiple disabilities or serious illness. A world where their possibilities are central.
• Bakkerij Van Eigen Deeg
• Fitlife
• SizaWerk
• Beweegteam 's Koonings Jaght
• Expertisecentrum NAH

Products and services

• Wonen (Living Support)

Quantifiable outcome

• HouVast intervention can help prevent or shorten child protection measures, keeping families together.
• +1 more outcomes

Named customers1 record

Segments6 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

15 partnerships are on record, tiered core and minor.

• Stichting Het DorpcoreOthersOne of two support foundations of Siza, established following the 1962 television fundraising event by Mies Bouwman for Het Dorp. The foundation provides financial support for Siza activities not funded by government, such as testing technological aids that help clients live more independently. Contact: Koen Gerritsen, [email protected], IBAN: NL29INGB0000811000.
• Stichting Vrienden van Het DorpcoreOthersOne of two support foundations of Siza, providing financial support to clients who cannot access government social legislation. Examples include purchasing a computer, holiday costs, or entrance fees for zoo, theater, museum, or group outings. Contact: Laura Vis - Van Zadelhoff, [email protected], IBAN: NL91INGB0001123000. Website: www.vriendenvanhetdorp.nl.
• De OnderwijsspecialistencoreStrategic or Co-development PartnerEducational specialists who work together with Siza caregivers at De Kameleon, a special school for children with severe intellectual disabilities and intensive care needs. Teachers and educational supporters collaborate with Siza care staff in an integrated education-care model.
• Landelijk Kenniscentrum LVBcoreStrategic or Co-development PartnerSiza is a participant in the National Knowledge Center for Mild Intellectual Disability (LVB). As a participant, Siza actively contributes to knowledge development and professionalization in the field of mild intellectual disability, improving the quality of support and care for these clients.
• De Lichtenbeek (School)minorStrategic or Co-development PartnerGBJ Kleurrijk (after-school care) works together with De Lichtenbeek school for children aged 4-12 with disabilities.
• Het Prisma (School)minorStrategic or Co-development PartnerGBJ Kleurrijk works together with Het Prisma school for children aged 12-18, using the 'begeleid ontdekkend leren' (guided discovery learning) method for people with intellectual disabilities.
• Stichting SutfeneminorImplementation/ SI/ Consulting PartnerDe Lunette in Zutphen works together with care and nursing services of Stichting Sutfene, who also provide night care services at that location.
• Portaal (Housing Corporation)coreStrategic or Co-development PartnerElderburen is a housing cooperative developed with housing corporation Portaal, with 50 apartments for regular residents (55+) and 20 Siza apartments for people with mild intellectual disability making a next step toward independent living.
• Oostwest and Van Wijnen (Property Developers)coreStrategic or Co-development PartnerElderburen was specially designed and developed by Oostwest and Van Wijnen with 'encounter' as a key principle, for residents who actively want to contribute to their living community.
• Restore (Kringloopwinkel Ede)minorOthersDuurSaam Recycle division checks games and puzzles for completeness so they can be sold at Restore secondhand shop in Ede.
• Speelgoedbankwinkel WageningenminorOthersDuurSaam Recycle division checks and cleans toys for the Speelgoedbankwinkel in Wageningen to give to children in need.
• Leger des Heils (Salvation Army)minorOthersDuurSaam Recycle division collects, sorts, and checks clothing for the Leger des Heils (Salvation Army).
• Nederlands OpenluchtmuseumminorOthersBakkerij Van Eigen Deeg produces artisanal and high-quality pastry products for the Dutch Open-Air Museum and Sportpark Papendal.
• Sportpark PapendalminorOthersBakkerij Van Eigen Deeg produces artisanal and high-quality pastry products for Sportpark Papendal.
• Expertisecentrum William SchrikkerminorStrategic or Co-development PartnerHouVast intervention for parents with mild intellectual disability was developed by Expertisecentrum William Schrikker. Siza caregivers have completed training to become certified to offer HouVast in Siza's service area.

Scale indicators4 records

Recent moves7 records

Expansion highlights5 records

Regional players

• Talant: Friesland-based Dutch care provider for people with intellectual disabilities offering residential, day, and work services — comparable service offering to Siza but operating in a different Dutch province without direct competition in Gelderland.

Direct peers

• ASVZ: Dutch care organization providing residential, ambulatory, and day services for people with intellectual disabilities and behavioral challenges — directly comparable to Siza's EMB/MVB/EVB+ severe intellectual disability focus and 24-hour residential model.
• 's Heeren Loo: One of the largest Dutch care providers for people with intellectual disabilities, operating across the Netherlands with residential, ambulatory, and day services — directly comparable to Siza's full service mix across physical, intellectual, and severe multiple disabilities.
• ORO: Dutch non-profit providing residential, ambulatory, and supported work for people with intellectual and physical disabilities in Brabant — directly comparable service portfolio and non-profit funding model to Siza.
• Pluryn: Dutch organization providing youth care, disability support, and specialized education — directly comparable to Siza's Jeugdwet-funded youth/family services and De Kameleon Onderwijszorggroep model.
• Middin: Zuid-Holland Dutch care provider for people with intellectual disabilities and autism, offering residential support and home guidance — comparable to Siza's home-based Begeleiding Thuis services and disability population focus.
• Dichterbij: Gelderland-based Dutch care provider focused on intellectual disabilities and autism support — directly comparable to Siza's intellectual disability and autism segments within the same regional care market.
• Koraal Groep: Limburg-based Dutch care provider with residential, education, and treatment services for children and adults with disabilities — directly comparable to Siza's integrated care-education model (De Kameleon) and special education offerings.
• Cello: Brabant-based Dutch organization offering supported living, day activities, and work reintegration for people with intellectual disabilities — directly comparable to Siza's independent living, sheltered work, and re-integration services.
• Philadelphia: Dutch non-profit supporting people with intellectual and/or visual disabilities through residential care, home support, and day activities across multiple provinces — directly comparable service portfolio and Wlz/Wmo funding model to Siza.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/SizaFilm
• Facebookfacebook.com/SizaZorg
• LinkedInlinkedin.com/company/sizazorg
• Instagraminstagram.com/sizazorg
• Xx.com/sizatweet

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries2 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 Siza