Finished Basements

A building permit is required in Milton for finishing any portion of a basement in a single family dwelling.

Follow the process outlined below to ensure that you meet all of the building permit requirements for your finished basement.

Is your property zoned for a finished basement?

Under the Zoning By-law, cooking facilities are not permitted within a finished basement.  If you would like to install cooking facilities in your basement please refer to information on Accessory Apartments.  Accessory Apartments are regulated under the Town of Milton's Zoning By-law.

General Zoning By-law requirements for your property can be obtained by contacting the Zoning Department at (905) 878-7252 ext.2329 or by reviewing the Town of Milton Zoning By-law.

Apply for your Building Permit

Complete building permit applications are accepted in person on the 2nd floor of Town Hall at 150 Mary St.  Building permit fees are payable by cash, cheque or debit at the time of application. Building permit fees include the review of drawings and all required inspections. 

Building permit applications require 2 types of submissions:

  1. Permit Application Forms
  2. Construction Drawings

Permit Application Forms 

1. Application for a Permit to Construct or Demolish - All sections of the form must be completed, including the full legal description (which can be found on your deed, tax assessment, survey, or is available from the public computer kiosk located on the main floor of Town Hall next to the Reception area).

2. Schedule 1 Designer Form  - This form is required when someone other than an Architect or Licensed Professional Engineer is taking responsibility for the design of the Finished Basement.

This other person would be either:

  • the homeowner taking legal responsibility for the design, provided they understand and are willing to take responsibility for the applicable requirements of the Ontario Building Code
  • OR 
  • a registered designer with a Building Code Identification Number (BCIN) qualified in House or Small Buildings.  Drawings that are prepared by a registered designer (as defined in the Ontario Building Code) must include:
    • The qualified designer's name.
    • The qualified designer’s registration number.
    • The qualification identification number of the qualified designer (Building Code Identification Number: BCIN).
    • The qualified designer's signature.
    • The stamp or statement that the qualified designer has reviewed and taken responsibility for the design activities. 

Construction Drawings Required

  1. An existing floor plan showing existing walls, windows, plumbing and  HVAC.
  2. A proposed basement layout plan showing extent of all new construction.
  3. In addition, when exterior window or door openings are added/enlarged or a bedroom is proposed in the Finished Basement an overall Site Plan* must be created and submitted. Please refer to the Town of Milton’s “Exterior Openings” building permit application guide for additional requirements, including specific egress window requirements.

Sample Drawings

Refer to the enclosed sample drawings for specific drawing requirements, including the number of copies of each drawing required. 

In addition, when exterior window or door openings are added/enlarged or a bedroom is proposed in the Finished Basement please refer to information on Exterior Openings Building Permits for additional requirements, including specific egress window requirements.

Drawing Submission Guidelines

  • Digital drawings are preferred, however paper submission is also accepted
  • Create 1 physical copy of the Site Plan or one digital copy.
  • Digital files must be in PDF format and generated directly from the software used to create them (AutoCAD, Softplan, Revit, etc.) using a PDF printer or converter (no scanned copies).
  • Digital PDF files must have the document properties/restrictions/security settings/permissions set to allow, “Printing” and “Adding Markups”.
  • Submit on CD, DVD, or USB flash drive in person at the time of building permit application.
  • All paper drawings must be submitted in black and white (min. 2 copies of all), drawn to an appropriate scale (min 3/16” = 1’ or metric equivalent), and clearly legible. Drawings in pencil shall be photocopied prior to submission, with the density adjusted so that all information is clear and legible.  All walls must be drawn as double lines (accurately showing wall thickness), and drawings must clearly differentiate between existing and proposed construction. Every page drawing shall include the project address and the designers information.

Book your Inspections

Typical Finished Basement inspections can include (depending on the scope of work):

  • Framing
  • Insulation & Air Barrier
  • Below Grade Plumbing, Above Grade Plumbing and Final Plumbing
  • Heating Rough-in and Final Heating
  • Final Building

Inspections are booked online or by calling the Building Division at (905) 878-7252 ext. 2396.

Rates and Fees

  • Typical homeowner related permit fees see our Residential Permit fees page.
  • For the complete list of Building Permit fees see our Rates and Fees by-law page.

  • All fees are required at the time of Permit Application (acceptable forms of payment include, Cash, Debit or Cheque)
  • Other charges may also apply