Unlock Your Home’s Potential
with an Additional Dwelling Unit!
This rendering is for illustrative purposes only and should not be used as a basis for construction, code compliance, or other regulatory requirements.
Your house has the potential to…
Earn you a second source of
income
Provide in-demand housing
for someone else
Increase in
property value
The key to unlocking
this potential?
Build an Additional Dwelling Unit (ADU)
An ADU is a separate living space on your property for family or tenants to live in.
ADUs must contain a kitchen, sanitary facilities, and outdoor access through a private entrance or from a common hallway or stairwell.
You could build:
a garden suite
a basement apartment
an upstairs apartment
a living space within an existing garage
Add one ADU…or two…or three!
Homeowners can now build up to three ADUs on their property – allowing for a total of four (4) residential dwelling units per property.
Developers have the opportunity to design and construct multi-unit buildings with up to four dwelling units, maximizing both space and value.
Approvals for ADUs are subject to the applicable laws, by-laws and building codes
Get cash back when you build an ADU in the Town of Ajax with the
Build More, Get More Grant Program
To qualify, application must be submitted on or after July 2, 2025
| Units added | Grant per unit | Maximum grant per property |
|---|---|---|
| 1 unit | $2,000 | $2,000 |
| 2 units | $3,000 | $6,000 |
| 3 units | $4,000 | $12,000 |
How it works:
Grants are first-come, first-serve while funds last
ADUs must comply with all applicable laws, building codes, zoning regulations, and inspections to the satisfaction of the Town of Ajax
Funds are disbursed after the building permit is closed (after construction has been completed and all inspections have passed)
Landlords & Tenants
Building an ADU to rent out? Read about the Residential Tenancies Act, and the rights and responsibilities of landlords and tenants, on TribunalsOntario.ca.
Read about the laws that affect residential tenants and landlords at Ontario.ca.
*Potential applicants under the Build More, Get More Grant Program have until no later than March 1, 2027, to qualify and receive payment under this program, unless otherwise amended or terminated by the Town of Ajax.
*The Town of Ajax reserves the right to withhold grant disbursement if the Additional Dwelling Unit(s) do not meet the required qualifications, or for any other reason, as determined at the sole discretion of the Town of Ajax.
*All terms and conditions are outlined in the Grant Program Agreement provided during the ADU Building Permit application process.