Legal Basement Apartments in Milton, Built and Registered as a Compliant ARU
Milton requires every ARU to register and renew annually. We build with that yearly inspection in mind from day one, so your unit passes year after year, not just the first time.
Book your free assessment
Tell us about your property and we'll confirm your lot's coverage and ARU capacity.
No obligation. We'll only use your details to prepare your assessment.
Milton runs one of the more structured ARU programs in the GTA. Since April 2025, every Additional Residential Unit in town, new or existing, has to go through a dedicated registration process with a $340 one-time fee per unit, renewed every single year.
The renewal inspection checks things a lot of basement renovations overlook, like whether the sump pump is blocked by storage or the furnace room is actually accessible. Letting a unit drift out of compliance puts the registration at risk. We've built ARUs across Milton's newer neighbourhoods, from Hawthorne Village to Ford to Harrison, and we build with the annual renewal in mind from day one.
Legal basement & ARU services in Milton
From the zoning check to registration and renewal, built to pass that yearly inspection.
Zoning & coverage review
We confirm eligibility for your detached, semi-detached, or townhouse property, check lot coverage (30, 25, or 20% by lot size), and confirm one parking space per unit.
Permits & registration
We prepare the building permit and, after sign-off, handle the ARU registration with the $340 per-unit fee, plus the annual renewal so it doesn't slip.
Renewal-ready construction
We keep the sump pump accessible, the furnace room clear, and exterior access routes unobstructed from day one, the exact things the annual inspection checks.
Multi-unit planning
Since June 2024, Milton allows up to three ARUs per lot, four units total. We plan the layout so building separation and coverage rules all line up.
Basement renovations
Non-rental renovations for family rooms, home offices, and extra living space, built to code so converting to a registered ARU later is straightforward.
Basement finishing
Flooring, drywall, lighting, and bathroom or kitchen finishes matched to the rest of your Milton home.
What a permit-ready Milton ARU needs
A building permit is required before any work starts, and every unit must meet the Ontario Building Code and Fire Code. Here's what has to be in place.
The detail that catches people: Milton's annual renewal inspection checks sump pump and furnace room access, not just alarms. We build those clearances in from the start so renewal is a formality.
- Building permit before any workRequired up front, with drawings, for the unit creating the ARU.
- Lot coverage within limits30, 25, or 20 percent depending on lot size, which also governs how many units the lot supports.
- One parking space per unitMandatory for each dwelling unit on the property.
- Egress, fire separation & alarmsStandard egress windows, fire separation, and interconnected smoke and carbon monoxide alarms.
- Accessible sump pump & furnace roomKept clear of storage and obstructions, since the annual renewal inspection checks both.
- ARU registration & annual renewal$340 per unit one-time, then renewed yearly to confirm the unit remains unchanged and compliant.
From your lot to a registered, renewed ARU
Seven steps, in order, including the yearly renewal that keeps it legal.
Confirm zoning eligibility and lot coverage limits for your property.
Submit a building permit application with drawings.
Construction proceeds with staged inspections.
Electrical Safety Authority sign-off.
Final building inspection and occupancy approval.
ARU registration application submitted with the $340 fee per unit.
Annual renewal confirming the unit is unchanged and remains compliant.
Benefits of a registered ARU
- Documented, registered legality that holds up at resale.
- Rental income that helps offset mortgage and property tax costs.
- Flexible space for adult children or aging parents.
- Up to four total units possible on qualifying lots.
Why homeowners choose My Legal Basement
We know Milton's annual renewal checklist before we ever frame a wall, which means the unit is built to pass that inspection year after year, not just the initial one. We also handle the registration paperwork and renewal reminders so it doesn't fall through the cracks.
Milton ARU FAQs
How much does ARU registration cost in Milton?
Do I need to renew my ARU registration every year?
How many ARUs can I add to my Milton property?
What happens during the registration inspection?
Are ARUs allowed in rural Milton?
How much parking do I need for an ARU in Milton?
Plan for the renewal from the start
Milton's registration program rewards homeowners who plan for the annual renewal from the start. Book a free assessment and we'll show you exactly what that looks like for your property.