If someone you love has an intellectual or developmental disability and is heading toward 21, the DDD application is the door to adult services in New Jersey. You can send it in as early as age 18, and services start at 21. Once the Division has your complete application and every document, it can take up to 60 days to hear whether you’re eligible.
This guide walks through the application in order: who qualifies, when to apply, which form to use, the documents DDD asks for, where to send it, and what happens next. Every rule here comes from the Division’s own pages and from the application form itself, linked in the sources at the end. For the bigger picture of what DDD pays for, see our guide to New Jersey DDD services. New to DDD altogether? Start with what the Division of Developmental Disabilities is.
Key takeaways
- Apply after 18 and at least six months before 21. DDD services begin at 21.
- Sort out Medicaid first. In New Jersey, an SSI approval brings Medicaid automatically.
- Send a complete packet. DDD says missing documents push the decision past its 60-day timeframe.
- Email it to DDD.NJApply@dhs.nj.gov, or take it to your county’s Community Services Office.
Who can apply for NJ DDD?
The application asks you to show three things: a qualifying developmental disability, that you’re a U.S. citizen and New Jersey resident, and that you’re eligible for or enrolled in Medicaid. In 2026, DDD’s application page sets the age rules plainly. You must be 18 or older to apply, and 21 or older to start receiving services.
The disability part has a specific definition. To meet DDD’s functional criteria, the disability must:
- have begun before the person turned 22,
- be expected to last for life, and
- substantially limit at least three of seven life areas: self-care, receptive and expressive language, learning, mobility, self-direction, capacity for independent living, and economic self-sufficiency.
The full definition sits in DDD’s Division Circular 3. On residency, the form is specific: the applicant must be a permanent New Jersey resident. For citizenship, it accepts a Social Security card, other proof of U.S. citizenship, or a green card.
What if the person is under 21? School services can continue until 21, and eligible 18 to 21 year olds can get some extra services through the Children’s System of Care. DDD only enrolls people under 21 in limited cases, such as a graduate starting college or trade school, or already in a competitive job. Our article on turning 21 and moving from school services to DDD covers that handoff in detail.
When should you apply for DDD in New Jersey?
DDD’s transition guidance gives a clear window: after you turn 18 and at least six months before you turn 21, apply for Medicaid and submit the DDD application. Applying in that window leaves time for the assessment, choosing a support coordination agency, and writing a service plan before school ends.
Some families apply right at 18 to know early whether they qualify. Others wait until 19 or 20, since services can’t start before 21 anyway. DDD’s own FAQ mentions both choices. Our view? Earlier is usually kinder to your calendar. If Medicaid or a missing evaluation holds things up, you’ll want months to fix it, not weeks.
| When | What to do | Where the rule comes from |
|---|---|---|
| At 18 | Apply for SSI. In New Jersey, SSI approval means automatic Medicaid. | DDD transition and Medicaid pages |
| After 18, at least 6 months before 21 | Apply for Medicaid and submit the DDD Application for Determination of Eligibility | DDD transition timeline |
| Final school year, September to June | Attend a DDD Welcome Session, use the Person-Centered Planning Tool, learn about support coordination | DDD transition timeline |
| Fall or winter of the last school year | The NJCAT assessment can be completed for students turning 21 | DDD NJCAT page |
| February to April | Choose and get assigned a support coordination agency | DDD transition timeline |
| April to June | The support coordinator writes the Individualized Service Plan, ideally approved before the student leaves school | DDD transition timeline |
| Age 21 | DDD services can begin | DDD application page |
Step 1: Put Medicaid in place first
Medicaid isn’t a side issue. It’s a condition of enrollment. DDD says it serves over 25,000 people because federal Medicaid funding helps pay for the Supports Program and the Community Care Program. To get that funding, everyone who enrolls in either program needs to be enrolled in Medicaid.
There are three common routes, all described on DDD’s Medicaid page:
- Through SSI. Anyone in New Jersey who receives Supplemental Security Income automatically qualifies for Medicaid. DDD recommends applying for SSI at 18. From 18, Social Security no longer counts the parents’ income and resources.
- Without SSI. If income or resources are above the SSI limits, you can still apply for Medicaid at your County Social Service Agency. DDD points to the Medicaid Aged, Blind and Disabled checklist for what to bring.
- As a Disabled Adult Child. Someone who lost SSI because they started receiving Social Security benefits on a parent’s record may keep Medicaid under this rule.
If Medicaid is denied or about to end, DDD has a helpdesk for exactly that. Fill in its Medicaid Eligibility Troubleshooting Form and send it, with a copy of the Medicaid letter, to DDD.MediEligHelpdesk@dhs.nj.gov.
Step 2: Choose the full or the short application
DDD publishes two versions of the Application for Determination of Eligibility. Most first-time applicants need the full one. The short one is for people who were already found eligible for developmental disability services, either by DDD or by the Children’s System of Care, also known as PerformCare.
DDD’s own three questions settle it:
- Have you ever applied for developmental disability services in New Jersey? If not, use the full application.
- Were you found eligible through the Children’s System of Care (PerformCare)? If yes, you can use the short application.
- Were you found eligible through DDD? If yes, the short application. If no, the full one.
Both forms come in English, Spanish, Portuguese, Korean, Gujarati and Traditional Chinese on DDD’s application page. An online application is listed as “coming soon,” so for now it’s the PDF or paper form.
Step 3: Gather the documents DDD asks for
This is the step that decides how fast things move. The checklist on the full application says to include as many disability documents as you can, because “the more documentation that is provided, the easier it is for DDD to process the application.” Here’s what the June 2021 version of that checklist lists.
Forms in the application packet
- The application itself (5 pages)
- Notice of Privacy Practices (keep it for your records)
- Form A: Acknowledgement of Receipt of Notice of Privacy Practices
- Form B: Authorization for Disclosure of Health Information
- Form C: Authorization for Release of Medical Records
- Form D: Consent for Release of Information to DDD
- New Jersey Voter Registration Opportunity and Application
Proof of the developmental disability
| Listed by DDD as necessary | Listed as helpful but not necessary |
|---|---|
| Medical documentation of the disability | Most recent IEP |
| Most recent psychological evaluation, with IQ scores | Speech therapy evaluations |
| Neurological evaluations | Occupational therapy evaluations |
| Most recent Child Study Team or school reports | Physical therapy evaluations |
| Psychiatric evaluations | Hospital records |
| DVRS assessments | Social summaries |
| All available psychological reports |
Proof of age, citizenship and New Jersey residency
- A copy of the birth certificate
- A copy of the Social Security card, or other proof of U.S. citizenship, or a green card
- One proof of New Jersey residency: a current NJ Motor Vehicle Commission photo ID, a pay stub, a W-2, a real estate tax bill (if the applicant owns property), military orders to New Jersey (if a guardian is in the U.S. military), or a voter registration acknowledgement card
Proof of Medicaid eligibility
- The SSI annual award letter, a Medicaid approval letter, or a copy of the Medicaid card
Other documents, if they apply
- A copy of the guardianship order
- Division of Vocational Rehabilitation Services (DVRS) records or evaluations
One practical tip from DDD’s own guidance: scan everything into a single folder before you start, so you can finish in one sitting. It’s written for the online form, but it’s just as useful for the email route.
Step 4: Sign the application and send it
The application has to come from the applicant. Family members and others can help fill it in, but they can’t submit it on the person’s behalf. An applicant who is 18 or older and their own legal guardian signs the forms, and whoever helped signs the witness line. If a court has appointed a legal guardian, the guardian signs instead.
This matters for parents. Are you a parent but not the court-appointed guardian? Then your adult child signs, and you sign as the witness. DDD then gives three ways to send the packet:
- By email. Scan the signed application and all documents and send them as attachments to DDD.NJApply@dhs.nj.gov. DDD asks for this subject line: Intake Application – initials – county. For example: Intake Application – JS – Mercer County.
- By mail. Address it to DDD Intake at the Community Services Office for the county where the person lives.
- In person. Hand it in at that same office, open 9 a.m. to 5 p.m., Monday through Friday.
These are the Community Services Offices as DDD lists them, with the counties each one serves:
| Office | Counties served | Address | Phone |
|---|---|---|---|
| Flanders | Morris, Sussex, Warren | 1-B Laurel Drive, Flanders, NJ 07836 | 973-927-2600 |
| Paterson | Bergen, Hudson, Passaic | 100 Hamilton Plaza, 7th Floor, Paterson, NJ 07505 | 973-977-4004 |
| Newark | Essex | 153 Halsey Street, 2nd Floor, PO Box 47013, Newark, NJ 07101 | 973-693-5080 |
| Green Brook | Union, Somerset | 275 Greenbrook Road, Green Brook, NJ 08812 | 908-226-7800 |
| Freehold | Ocean, Monmouth | Juniper Plaza, Suite 1J, 3499 Route 9 North, Freehold, NJ 07728 | 732-863-4500 |
| Trenton | Hunterdon, Mercer, Middlesex | 140 East Front Street, Trenton, NJ 08625 (mail: PO Box 706, Trenton, NJ 08625-0706) | 609-292-1922 |
| Egg Harbor | Atlantic, Cape May, Cumberland, Salem | 500 Scarborough Road, Suite 102, Egg Harbor Township, NJ 08234 | 609-300-1898 |
| Voorhees | Burlington, Camden, Gloucester | 2 Echelon Plaza, 221 Laurel Road, Suite 210, Voorhees, NJ 08043 | 856-770-5900 |
Stuck on a question? DDD’s intake team answers questions at DDD.BeforeYouApply@dhs.nj.gov, and you can call or visit your county office and ask for an intake worker. The Division’s main line is 609-633-1482, toll-free 800-832-9173.
Step 5: What happens after you apply?
Once DDD has the complete application and every required document, it can take up to 60 days to tell you whether you’re eligible. Incomplete applications take longer. After that come the assessment, a support coordinator and a service plan. Here’s each piece in order.
The eligibility review
Intake staff check the paperwork against the three requirements. The form notes this can include a face-to-face interview if intake staff think it’s needed. If something is missing, expect a request for more information. The staff section of the form even has a box for closing an application because of insufficient information.
The NJCAT assessment
Next, DDD schedules the New Jersey Comprehensive Assessment Tool. A trained facilitator meets you and your guardian, if you have one, in person, by video or by phone. It looks at support needs in three areas: self-care, behavioral and medical. The result sets the person’s tier, and the tier sets the annual budget for services.
It helps to bring people who know the person well, such as family, caregivers or providers. The group talks through each question and the facilitator records the shared answer. DDD mails a tier letter within four weeks of the NJCAT meeting. You can preview a sample NJCAT beforehand.
Choosing a support coordination agency
Your intake worker gives you a Support Coordination Agency Selection Form during the application process. DDD suggests naming a first and a second choice. You can compare agencies by county, language and level of need with DDD’s online Provider Search. Your support coordinator then checks in at least once a month. If you’re in the Supports Program or Community Care Program, you can switch agencies, and the change takes effect the following month.
Writing the Individualized Service Plan
The support coordinator writes the Individualized Service Plan (ISP) with you, your family and your providers. It draws on the Person-Centered Planning Tool and the NJCAT results. For students, DDD wants the ISP approved before the student leaves school, so services are ready at graduation. Curious how a budget turns into actual hours? Our article on how home-based support is funded in NJ walks through it. If a relative hopes to be paid as a caregiver under the plan, see which New Jersey programs pay family caregivers.
Supports Program or Community Care Program?
There’s no waiting list for the Supports Program. The Community Care Program has one, and being on it doesn’t guarantee enrollment. DDD assesses eligibility for that program when a person reaches the top of the list, and it generally works through the list in order. Our NJ DDD services guide compares the two programs.
What if DDD says you’re not eligible?
You can appeal. The signature page of the application states that the applicant has the opportunity to appeal a determination of ineligibility, under the New Jersey rules it cites (N.J.A.C. 10:48). If you get an ineligibility decision, contact the intake unit at your Community Services Office and ask how to start an appeal.
Read the decision closely first. If the problem was missing or outdated documents rather than the disability itself, the quickest fix may be getting the missing evaluation and sending it in. If the problem is Medicaid, the Medicaid Eligibility Helpdesk described in Step 1 is the place to start.
Mistakes that slow a DDD application down
DDD is direct about the biggest one: when required documents or information are missing, the decision takes longer than 60 days. The rest are avoidable problems you can check for before you hit send.
- A thin disability file. One old evaluation rarely tells the whole story. Send everything on the “necessary” list that you have.
- Medicaid not sorted. Enrollment in either DDD program requires Medicaid, and the packet asks for proof. Start SSI or Medicaid first.
- The wrong signature. If the applicant is their own guardian, they sign. Helpers sign as witnesses.
- Starting late. DDD’s timeline asks for the application at least six months before 21, so the plan can be approved before school ends.
- A vague email. Use the subject line format DDD asks for, with initials and county.
Need a hand with the next step?
Ameriwell Care supports adults with developmental disabilities and their families across New Jersey. If you’re in the middle of the application, or wondering what services could look like once it’s approved, we’re glad to help you make sense of your options. Talk to a care specialist.
Frequently asked questions
Can I apply for NJ DDD online?
Not yet. DDD’s application page lists the online application as “coming soon.” For now, email the signed application and scanned documents to DDD.NJApply@dhs.nj.gov, mail them to your county’s Community Services Office, or hand-deliver them there between 9 a.m. and 5 p.m., Monday through Friday.
How long does a DDD application take?
Up to 60 days after DDD has your complete application and every required document. Missing documents make it take longer. Next, DDD schedules the NJCAT assessment and mails a tier letter within four weeks of that meeting.
Can a parent apply for an adult child?
A parent can help fill it in, but the application must come from the applicant. An applicant who is 18 or older and their own legal guardian signs it, and the person helping signs the witness line. A court-appointed legal guardian can sign instead.
Do you need Medicaid before applying for DDD?
You need to be eligible for or enrolled in Medicaid, and the packet asks for proof such as an SSI award letter or a Medicaid approval letter. In New Jersey, anyone approved for SSI qualifies for Medicaid automatically, which is why DDD recommends applying for SSI at 18.
Is there a waiting list for DDD services?
Not for the Supports Program. The Community Care Program has a waiting list. DDD evaluates eligibility for that program when a person is reached on the list, and it generally works through the list in order. Being on the list doesn’t guarantee enrollment.
Sources
- NJ Division of Developmental Disabilities, “Application for Determination of Eligibility,” retrieved 2026-10-05, https://www.nj.gov/humanservices/ddd/individuals/apply-for-services/application/index.shtml
- NJ Division of Developmental Disabilities, “Full Application for Determination of Eligibility” (checklist and instructions, June 2021), retrieved 2026-10-05, https://nj.gov/humanservices/ddd/assets/documents/individuals/application-for-eligibility-full.pdf
- NJ Division of Developmental Disabilities, “Medicaid Requirement,” retrieved 2026-10-05, https://www.nj.gov/humanservices/ddd/individuals/apply-for-services/medicaid/index.shtml
- NJ Division of Developmental Disabilities, “NJCAT,” retrieved 2026-10-05, https://www.nj.gov/humanservices/ddd/individuals/apply-for-services/njcat/index.shtml
- NJ Division of Developmental Disabilities, “Transition,” retrieved 2026-10-05, https://www.nj.gov/humanservices/ddd/individuals/transition
- NJ Division of Developmental Disabilities, “Community Services Offices,” retrieved 2026-10-05, https://www.nj.gov/humanservices/ddd/about/community-services
- NJ Division of Developmental Disabilities, “Support Coordination,” retrieved 2026-10-05, https://www.nj.gov/humanservices/ddd/individuals/access-services/care-management
- NJ Division of Developmental Disabilities, “Community Care Program Waiting List,” retrieved 2026-10-05, https://www.nj.gov/humanservices/ddd/individuals/access-services/waiting-list
- NJ Division of Developmental Disabilities, “Contact DDD,” retrieved 2026-10-05, https://www.nj.gov/humanservices/ddd/contact/contact-ddd
- NJ Division of Developmental Disabilities, “Division Circular 3” (functional criteria), retrieved 2026-10-05, https://nj.gov/humanservices/ddd/assets/documents/DC3_2013.pdf
This guide is for general information about applying to New Jersey’s Division of Developmental Disabilities and is not legal or benefits advice. Forms, addresses and timelines change, so always confirm current details with the NJ Division of Developmental Disabilities.