The Affordable Dwelling Unit (ADU) and Inclusionary Zoning (IZ) programs of the District of Columbia allows income eligible households to purchase or rent housing at below market prices. The DC government provides incentives to developers to set aside certain units for low- to moderate-income households for purchase or rent through the ADU and IZ programs in order to preserve affordable housing in the city.

Affordable Dwelling Units (ADUs)

For the opportunity to purchase or rent an Affordable Dwelling Unit (ADU), income eligible households should apply directly to the developer or property manager and meet the requirements of that specific property. The District of Columbia does not require that you attend training for the ADU program. HCS assists ADU applicants by completing an income certification, however, applicants should first contact the developer or property management for other property specific requirements.

Inclusionary Zoning (IZ)

For the opportunity to purchase or rent an Inclusionary Zoning  unit, income eligible households must attend an Inclusionary Zoning Orientation. Next you may find an available IZ unit on your own that is accepting applicants AND/OR register for the IZ lottery on the DC Department of Housing and Community Development’s (DHCD’s) website ( Those wishing to buy an Inclusionary Zoning property should call 202-667-7606 to register for the 8-hour Home Buyer Course. A pre-approval or pre-qualification letter will be required before you are registered.

[Please note: Attending the 2-hour Pre-Purchase Orientation will not qualify you to be registered as a potential buyer with the DC Inclusionary Zoning Program for home buyers.] 

HCS assists IZ participants in three ways:

  1. Orientations – We conduct Inclusionary Zoning Orientations once a week at different times, days and locations. Click Here to register. Orientations fill up quickly but we do have a generous walk-in policy. If the session you wish to attend is posted as FULL, you should still consider attending and arriving 10 to 15 minutes early. We will not hold seats for registrants who are late or fail to show. As a result, we have found that we are able to accommodate most walk-ins. Walk-ins will be seated on a first-come first-seated basis as long as seats are available. Fifteen minutes after the event start time you may not be seated.
  2. 8-Hour Home Buyer Course – In order to register as a buyer in the Inclusionary Zoning Program you are now required to first attend an 8-hour Home Buyer Course. HCS conducts this course by invitation only. You must obtain a pre-approval or pre-qualification letter from a lender before you will be registered to attend.
  3. Certifications – We provide required certifications for households selected in the Inclusionary Zoning lottery or who find an Inclusionary Zoning unit on their own. To schedule an appointment to obtain your required certifications, please email your request and a copy of your lottery selection notice to us at or call 202-667-7006.



Registrant, Walk-In and Late Arrival Policy

 PRE-REGISTRATIONS: Please arrive on time as your reserved seat WILL NOT be held after the start time for the event even if you have pre-registered and have a ticket. Please be aware that your registration ticket to attend the IZO expires at the start time for the event and any open seats will be immediately distributed to walk-ins at the start time of the event.

WALK-INs / STAND-BYs: Individuals who have not pre-registered and who do not have a ticket will only be admitted IF seats are available AFTER the start time for the event. While we cannot guarantee a seat, we will try our best to accommodate those who arrive BEFORE the start time. Please sign the Stand-By Sheet, which is available at the intake window, to let us know you are waiting. Names will be called from the Stand-By Sheet in the order of arrival. Once all seats are occupied, those still waiting will be notified that the doors are closed and these individuals will need to register for another date.

LATE ARRIVALS: Because the Inclusionary Zoning regulations REQUIRE that participants be certified as having fully participated in the IZO, nobody will be admitted more than 15 minutes after the start time of the event. If you arrive more than 15 minutes late, you will be asked to re-register for another date. There are no exceptions to this rule as regulation requires certification of FULL participation.