Free on-site assessment · Mon–Sat 8:00–5:30 · (705) 970-5677

Home / Services / Basement Cost Guide

Basement finishing & legal basement cost guide (2026)

Typical 2026 costs to finish a basement in the GTA, the extra steps for a legal second unit in Brampton, and how to plan the budget.

Finishing costs

Cost per square foot

Typical finishing ranges reported for the GTA in 2026.

Finish levelTypical range (CAD / sq ft)What it usually includes
Basic$50 – $75Framing, insulation, drywall, flooring, lighting
Mid-range$75 – $100Better finishes, more lighting, built-ins
High-end$100 – $200Premium materials, custom features, wet bar or bathroom

Example: an 800 sq ft basic finish works out to roughly $40,000 – $60,000 at these rates. Permits typically add $500 – $2,000, and a 10 – 15% contingency is recommended.

Price ranges are typical market figures reported by the sources below, not an Empire quote. Your price depends on size, layout changes, materials and site conditions. Sources: HomeStars basement finishing guide (2026).

Legal second units

Extra steps for a legal basement in Brampton

A legal unit costs more than a basic finish because it must meet second-unit requirements.

  • Registration requiredBrampton requires second units, third units and garden suites to be registered with the City.
  • Up to 3 units per lotBrampton allows a maximum of 3 units, including the main house, in set combinations.
  • Permit drawingsPrepared by our in-house BCIN designer.
  • Code upgradesFire separation, smoke alarms, egress windows, ceiling height and a separate entrance where needed.
  • InspectionsBooked at each stage; failed inspections can bring recall fees.
  • Kitchen and bathroomA full unit needs both, which adds plumbing and finishes.

Price ranges are typical market figures reported by the sources below, not an Empire quote. Your price depends on size, layout changes, materials and site conditions. Sources: City of Brampton – additional residential units, HomeStars basement finishing guide (2026).

FAQ

Common questions

How much does a legal basement cost?

It depends heavily on your existing basement: ceiling height, windows, entrance, plumbing and size. After a free assessment we give you a written quote covering drawings, permits and construction.

Is a legal unit worth it?

A legal unit can be rented properly and avoids insurance and resale problems that unpermitted units can cause.

Get a free on-site estimate

Tell us about your project and we'll book a visit at a time that suits you.