SLDC

What SLDC does

Linden Oaks, formerly known as Speech and Language Development Center (SLDC), is a California-based nonprofit organization founded in 1955 that delivers therapy and education services to individuals with developmental, behavioral, and learning needs from ages 2 through 40. The organization operates a continuum-of-care model spanning six interconnected programs: Early Intervention Therapy, a Specialized K-12+ Non-Public School, Adult Day Services, Clinical Services, an Intensive Outpatient Program (IOP), and Applied Behavior Analysis (ABA) Services. Its core technology is grounded in evidence-based therapeutic and educational practices; no proprietary software platform or technology product is disclosed, and service delivery is conducted in person at physical facility locations.

The organization is headquartered in Buena Park, California, with a secondary facility in Temecula and an announced expansion into downtown Harrisonburg. Headcount is reported in the 101-250 range. Revenue mechanics are not publicly disclosed but are presumed to derive from a mix of insurance reimbursement, government-funded programs (special education, Medi-Cal/Medicaid equivalents, regional center funding), private tuition, and charitable donations supported by an extensive 2025 Partners donor program. Customer segments are horizontal across the lifespan — young children requiring early intervention, K-12+ students with special education needs, adults with developmental disabilities, and individuals requiring behavioral health services — with referral pathways and community events (e.g., the 48th Annual Dick Gorrie Golf Tournament) serving as primary GTM channels.

The organization rebranded from SLDC to Linden Oaks to reflect its expanded lifespan mission beyond speech and language, and is led by a Board of Directors (individual leadership team not disclosed in source material). Ownership is independent nonprofit; no parent company or equity investors are identified. Strategic posture is best characterized as a regionally embedded, mission-driven service provider with modest geographic expansion and a broadening program portfolio.

Name

SLDC

Legal name

Linden Oaks

Website

https://sldc.net

Company type

Private

Founded year

1955

Operating status

Operating

Headcount range

101–250 employees

Short description

Linden Oaks (formerly SLDC) is a California nonprofit founded in 1955 that delivers therapy and education services across the lifespan — from early intervention through adult day programs — to individuals with developmental, behavioral, and learning needs at facilities in Buena Park and Temecula.

Ownership category

akta.pro rank

Product category

Special Education and Therapy Services

NAICS

Child and Youth Services (624110), Outpatient Mental Health and Substance Abuse Centers (621420), Residential Intellectual and Developmental Disability Facilities (623210)

SIC

Services-Educational Services (8200), Services-Health Services (8000)

akta.pro primary industry

Therapeutic/Behavioral & Residential Treatment K–12 Schools (EDAJABAI)

akta.pro secondary industries

School-Based Mental & Behavioral Health Services (EDAJAIAB), Social Skills, Play Skills & Group ABA Programs (EDAKAHAJ), Mental Health Counseling & Therapy Services (K–12) (EDAJALAG), School Counseling & Guidance Services (Academic/Social-Emotional) (EDAJALAF)

Keywords

• Special education services
• Speech therapy
• Applied behavior analysis
• Early intervention therapy
• Adult day services

Headquarters

HQ city

Buena Park

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Marketing or Sales, Others

Distribution channels1 record

Marketing channels2 records

Core offering

Linden Oaks is a nonprofit school and therapy center that delivers therapeutic and educational services for individuals ages 2 through 40 with developmental, behavioral, and communication needs. Its six core programs—Early Intervention Therapy, a Specialized K-12+ Non-Public School, Adult Day Services, Clinical Services, an Intensive Outpatient Program (IOP), and ABA Services—are delivered in person across its California facilities under an integrated continuum-of-care model.

Product overview

Linden Oaks (formerly Speech and Language Development Center) is a therapy and education organization offering a unified suite of programs serving individuals across the lifespan. The organization operates six interconnected service areas: Early Intervention Therapy, a Specialized K-12+ Non-Public School, Adult Day Services, Clinical Services, an Intensive Outpatient Program (IOP), and ABA Services. These programs share a common therapeutic foundation and are designed to work collaboratively to support individuals with developmental and behavioral needs—from early childhood through adulthood—with the organization's mission centered on providing accessible therapy and education to foster growth, resilience, and well-being.

Differentiator

Problem solved

Functional benefit

Products and services

• Early Intervention Therapy
• Specialized K-12+ Non-Public School
• Adult Day Services
• Clinical Services
• Intensive Outpatient Program (IOP)
• ABA Services

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

19 partnerships are on record, tiered minor.

• Leo PaperminorOthersCorporate donor supporting Linden Oaks as part of the 2025 Partners program
• Lockhart LawfirmminorOthersLaw firm donor supporting Linden Oaks as part of the 2025 Partners program
• LocktonminorOthersInsurance/financial services company donor supporting Linden Oaks as part of the 2025 Partners program
• Logical Resource IncminorOthersCorporate donor supporting Linden Oaks as part of the 2025 Partners program
• OneDigitalminorOthersCorporate donor supporting Linden Oaks as part of the 2025 Partners program
• ORCOminorOthersCorporate donor supporting Linden Oaks as part of the 2025 Partners program
• PBCminorOthersCorporate donor supporting Linden Oaks as part of the 2025 Partners program
• Peterson DevelopmentminorOthersDevelopment company donor supporting Linden Oaks as part of the 2025 Partners program
• Philadelphia Insurance CompaniesminorOthersInsurance company donor supporting Linden Oaks as part of the 2025 Partners program
• QuinncatminorOthersCorporate donor supporting Linden Oaks as part of the 2025 Partners program
• SCG (Southern California Gas)minorOthersUtility company donor supporting Linden Oaks as part of the 2025 Partners program
• Schools First Federal Credit UnionminorOthersCredit union donor supporting Linden Oaks as part of the 2025 Partners program
• Teamsters Local 848minorOthersLabor union donor supporting Linden Oaks as part of the 2025 Partners program
• Rite Aid Healthy FuturesminorOthersHealthcare/pharmacy foundation donor supporting Linden Oaks as part of the 2025 Partners program
• United HealthcareminorOthersHealthcare insurance company donor supporting Linden Oaks as part of the 2025 Partners program
• LENNARminorOthersHomebuilding company donor supporting Linden Oaks as part of the 2025 Partners program
• Brookfield ResidentialminorOthersResidential developer donor supporting Linden Oaks as part of the 2025 Partners program
• Arthur J. Gallagher & CominorOthersInsurance brokerage firm donor supporting Linden Oaks as part of the 2025 Partners program
• Anaheim Ducks FoundationminorOthersProfessional sports team foundation donor supporting Linden Oaks as part of the 2025 Partners program

Recent moves6 records

Expansion highlights5 records

Emerging players

• The Menta Group: Illinois-based provider of special education and ABA services across multiple states; comparable in clinical model and K-12 non-public school positioning, though structurally a for-profit.

Direct peers

• AbilityPath: Bay Area nonprofit offering early intervention, special education, and adult services for people with developmental disabilities — direct lifespan-continuum peer with similar donor-funded structure.
• The Help Group: A large Los Angeles-based nonprofit operating therapeutic K-12 non-public schools, ABA services, and adult day programs for children with autism and developmental disabilities — the closest direct analogue in Southern California.
• Easterseals: National nonprofit federation delivering therapy, special education, and adult services for people with disabilities and autism; comparable mission, donor-funded model, and lifespan service continuum.
• The Arc of the United States: National nonprofit advocacy and direct-service organization for people with intellectual and developmental disabilities; overlapping mission in adult day services, residential, and family support.
• Catalight Foundation: California-based nonprofit (formerly Easterseals Bay Area) operating ABA, clinical, and adult services across the lifespan — directly mirrors Linden Oaks' integrated program model.
• May Institute: Nonprofit provider of ABA, special education schools, and adult services for individuals with autism and developmental disabilities across multiple states — comparable integrated model.

Broad incumbents

• BrightSpring Health Services: Large public home and community-based health services platform with significant ABA and behavioral health exposure; broader incumbent but competing for the same referral and clinician pool.
• Devereux Advanced Behavioral Health: Large national nonprofit operating residential, educational, and behavioral health programs for individuals with special needs; broader footprint and more institutional scale than Linden Oaks but serving overlapping populations.

Regional players

• HOPE Services: Silicon Valley-based nonprofit providing adult day services, employment, and behavioral health support for people with developmental disabilities; comparable lifespan and IDD focus in California.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/SLDCtweets

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 SLDC