Basement Renovations in Milton
From Old Milton, Mountainview and Timberlea to Hawthorne Village and Willmott, we finish Milton basements and build additional residential units that pass the Town's registration inspection.
Every Unit Is Registered and Inspected
Milton registers every additional residential unit, new or existing, with no grandfathering, and whether or not it is rented. The program is a three-year pilot that began in 2025: you pay $340 per unit, a municipal law enforcement officer and a fire prevention officer inspect it, and a compliance certificate is issued if it passes. Certificates last one year and must be renewed annually, free of charge during the pilot.
The inspection checklist tells you what to build for. Inspectors confirm that smoke alarms are working and interconnected, that carbon monoxide alarms are on each level, that fire separations are intact, and that the sump pump and furnace room can be reached. We design basement units so those items are easy to show, with a clear route to the mechanical room rather than one hidden behind storage.
Milton's zoning spells out the basement rules. A unit in the basement may occupy the entire basement, up to three additional units are allowed on a lot, and each needs one parking space. A path at least 1.2 m wide with 2.1 m of headroom must lead from the street to the unit's entrance. Since 72.9% of Milton homes were built from 2001 onward, a typical basement here is less than 25 years old.
- Licensed & insured contractors
- Transparent, itemized pricing
- Permits & approvals handled for you
- On-time delivery, every project
Recent Basement Renovations
Examples of our basement work from across the GTA.
Milton Requirements Step by Step
What the Town asks for, in the order you will meet it.
Registration Pilot
$340 per unit, then an inspection by by-law and fire officers. Renewal is annual and free during the pilot.
Inspection Items
Interconnected smoke alarms, CO alarms on each level, intact fire separations, and clear access to the sump and furnace.
Access Path
1.2 m wide, with 2.1 m of vertical clearance, from the street to the unit entrance.
Parking
One space for each additional dwelling unit.
Floodplain Limits
No units on hazard lands or in the regulatory flood plain unless the conservation authority permits it.
Rural Lots
Since January 2026, ARUs are also allowed on some rural properties, with tighter limits near the Escarpment and Greenbelt.
Milton Basement Facts
Town fees and census figures behind a Milton basement project.
| Homes built 2001 to 2021 | 72.9% (2021 census) |
| Population growth, 2016 to 2021 | 20.7% (2021 census) |
| ARU registration | $340 per unit; free annual renewal during the pilot |
| Finished basement permit | $6.55 per m (minimum $264.20) |
| Attached unit permit | $9.58 per m (minimum $264.20) |
| Walkout or side entrance | $264.20 flat |
Milton Basement Projects
The basement work Milton families ask us about most often.
Registered Basement Units
Units designed to pass the Town inspection and receive a compliance certificate.
Whole-Basement Suites
Using the full basement for the unit, which Milton zoning specifically allows.
First-Time Finishes
Family rooms, offices and gyms in basements under homes built since 2001.
Side Entrances
New side door entrances and walkouts, with the 1.2 m access path planned in.
Basement Bathrooms
Bathrooms on existing rough-ins, or with a pump where the drain sits high.
Registering Existing Units
Upgrades so an existing unit can pass inspection and join the registry.
Milton Basement Costs
Milton homeowners can finish a basement with us from $55 per square foot, or build a registered unit from $80 per square foot. Typical finishes run $50,000 to $90,000, and legal units typically $80,000 to $175,000, since a unit adds a kitchen, fire separation, interconnected smoke and CO alarms, an exit route and the permit and registration work.
Because so many Milton basements are young, less of the budget usually goes to demolition and repair, and more goes into layout and finishes. A side entrance or walkout is the item that changes a Milton quote most. Quotes are fixed and itemized once we have walked the basement, with the Town's permit and registration fees shown separately.
Milton Basement Renovation FAQs
How much should I budget for a Milton basement?
Does Milton require basement units to be registered?
What permits and fees apply to a Milton basement?
Can the whole basement be the unit?
Are there flood subsidies in Milton?
Milton Neighbourhoods We Serve
We work across Milton, from the mature neighbourhoods around downtown to the newest streets.