Before any construction of a new building or renovation can begin, you will need to obtain a building permit. Whether you are finishing your basement, adding windows or doors or constructing a deck, fence or pool, you’ll need a building permit. Building without a permit can result in fines and penalties as set out in the Building Code Act.

Apply for a permit

Complete a Building Permit Application and submit the application along with required drawings, documents and other forms to:

Planning & Development, Building
150 Mary St.
Milton, ON L9T 6Z5

All applications must be made in person at Town Hall during business hours. We do not accept permit applications online.

Drawing submission guidelines

Please follow our submission guidelines when submitting your permit application.

Digital submissions

You can submit digital files on a USB flash drive, CD or DVD when you submit the permit application. Digital files must:

  • Be in PDF format and generated directly from the software used to create them (e.g. AutoCAD, Softplan, Revit, etc.) using a PDF printer or converter (no scanned copies)
  • Have the document properties/restrictions/security settings/permissions set to allow “printing” and “adding markups”

Paper submissions

All paper submissions must be:

  • Black and white
  • Drawn to an appropriate scale (3/16”=1’ or metric equivalent)
  • Clearly legible

In addition:

  • All walls must be drawn as double lines to accurately show thickness
  • You must distinguish between existing and proposed construction
  • Every page should include the address and designer information

Rates and fees

Review our permit application fees.

Residential building permit fees

View the most common residential building permit fees in Milton.

Common residential building permit fees
Type Fee
New house or addition to house $15.71/m2
Multiple-unit building or apartment $15.71/m2 
Shed, detached garage, gazebo or personal workshop

$142 (up to 27.83m2)

$8.22 /m2 (over 27.83m2)

New unenclosed deck or porch, or alteration to existing deck $142 (flat rate) 
Basement walkouts, exterior stairs $230 (flat rate)


Interior renovations
Type Fee
Interior alteration $5.70/m2 
Finished basement $5.70/m2
Secondary dwelling unit (basement apartment) $8.34/m2
New opening (window or door) or side door entrance $230 
Fireplace or woodstove $230 
New plumbing or alteration $230 


Septic fees
Type Fee
New or replacement septic system $720
Septic tank or bed replacement or repair $360
Review of existing septic system $179


Other fees
Type Fee
Demolition  $230
Temporary tent $230
Swimming pool enclosure permit (including hot tubs) $174
Property Information Report $108
File retrieval Actual Cost plus $67
Copies of building plans  $230
Permit transfer $150
Certificate of Occupancy $123


 Industrial, Commercial and Institutional building permit fees

View the most common industrial, commercial and institutional building permit fees in Milton.

  • It costs $23.82/m² for all permits for new buildings and additions to existing buildings for assembly uses.
  • It costs $26.31/m² for all permits for new buildings and additions to existing buildings for care or detention uses.
Residential use fees
Type Fee
Multiple unit buildings (apartments) $15.71/m²
Hotel or motel $15.71/m²


Business and personal services use fees
Type Fee
Shell only (no occupancy) $13.54/m²
Partitioned and finished $16.42/m²


Mercantile use fees
Type Fee
Shell only (no occupancy) $10.85/m²
Partitioned and finished $13.39/m²


Industrial use fees
Type Fee
Shell only (no occupancy) $8.67/m²
Partitioned and finished $9.35/m²
Parking garage $5.45/m²
Farm buildings $3.43/m²


Mechanical, plumbing and safety use fees
Type Fee
Special systems (commercial exhaust, spray booth, dust collectors and CO detectors, etc.) $450 
Sprinkler systems $0.87/m²
Electromagnetic locks $124 each
Fire alarm $595
Site servicing (sanitary, storm and water) $3.46/m for each separate line


Other fees
Type Fee
Interior alterations (all building classifications) $5.70/m²
Elective changes (revisions) $380
Racking system 1.8% of the construction value
Change of use (no construction or increase in hazard) $230
Designated structures $425
Demolition $230
Signs 1.60% of prescribed value
Tents $230


All m2 fees are subject to a minimum of a $230 fee. 

Additional forms

Depending on the type of renovation, you may be required to submit additional forms along with your permit application.

Application guidelines

Review our common permit application checklists to make sure your application includes all of the necessary drawings and documents: