Basement renovation completed in Brentwood
17 basement renovation projects submitted this week in Brentwood

Basement Renovation
Brentwood

An damp basement in Brentwood is lost monthly income. Our renovation partners plan and execute basements that generate rental income. No-cost estimate within 24h.

$22000
starting from

Estimated prices for Brentwood — free quotes from verified contractors

Licensed & Insured Contractors
100% Free Quote
Waterproofing Expertise

100% Free — No Obligation

Your basement renovation in Brentwood

3 to 5 quotes · Local renovation experts · Response within 24h

Get My Free Basement Quotes

Free · No obligation · Response within 24h

24h
Max response
100%
Free
5
Quotes

Basement renovation prices in Brentwood — 2026

Estimates based on size, scope and finish level

★ POPULAR
🏠

Full Basement Finish

Framing · Drywall · Flooring · Lighting · Bathroom

$22624 – $71985
Get an exact price →
🏡

Legal Basement Suite

Permits · Egress · Kitchen · Bath · Full finish

$10283 – $35992
💧

Waterproofing

Interior/exterior membrane · Sump pump · Drainage

$3599 – $14397

🛁 Basement bathroom addition

$1542 — $6170

☔ Interior waterproofing system

$3599 — $14397

🌡️ Basement heating installation

$1542 — $6170

💡 Egress window installation

$1542 — $6170

Estimated prices for Brentwood. Get accurate, free quotes from our verified contractors.

Why choose Basement Quotes Canada for your basement renovation in Brentwood?

Licensed & Insured Contractors

Every renovation partner is fully licensed, carries liability insurance, and has verified references in Brentwood.

100% Free Quote

No fees, no obligation. Compare up to 5 basement renovation quotes in Brentwood — completely free.

Waterproofing Expertise

Proper waterproofing is critical before finishing a basement. Our contractors in Brentwood assess and correct moisture issues first.

Code-Compliant Builds

All basement renovations — including legal suites — are built to code with proper permits in Brentwood.

Basement renovation services available in Brentwood

Underpinning

Basement underpinning to increase ceiling height in Brentwood. Structural engineering and permit included.

Basement Bathroom

New bathroom addition in your basement. Full plumbing rough-in, tile, fixtures and ventilation.

Legal Basement Suite

Complete legal basement suite construction in Brentwood. Permits, egress, kitchen, bathroom, separate entrance — income-ready.

Basement Waterproofing

Interior and exterior waterproofing systems. Sump pumps, drainage membranes, crack injection in Brentwood.

Home Theatre & Media Room

Custom home theatre and media room design and installation. Wiring, acoustics and custom millwork in Brentwood.

Basement Finishing

Full basement finishing in Brentwood — framing, insulation, drywall, flooring, lighting and trim. Turn unused space into living space.

Frequently asked questions — Basement renovation in Brentwood

How much does it cost to finish a basement in Brentwood?
A full basement finish in Brentwood typically costs $22624–$71985, depending on size, bathroom inclusion and finish level. A basic finish with no bathroom starts around $3599–$10283. Get 3–5 free quotes to compare.
How much does a legal basement suite cost in Brentwood?
A legal basement suite in Brentwood typically costs $10283–$35992, including permits, egress windows, kitchen, bathroom and separate entrance. Rental income of $1,500–$2,500+/month is common in larger Brentwood markets.
Do I need a permit to finish my basement in Brentwood?
Yes — basement finishing that includes electrical, plumbing or structural work requires permits in Brentwood. Legal suites require additional permits and inspections. Your contractor handles the permitting process.
How do I know if my basement has a moisture problem?
Signs of basement moisture in Brentwood: water stains, efflorescence (white powder on walls), musty odour, peeling paint, or visible mold. Our contractors assess moisture before any finishing work to prevent future damage.
How long does a basement renovation take in Brentwood?
A full basement finish in Brentwood takes 4–8 weeks. A legal suite with plumbing and permitting takes 8–14 weeks. Underpinning adds 2–4 weeks. Your contractor will provide a detailed schedule.

Have more questions? Our pros are available.

Contact a pro now

Ready to renovate your basement in Brentwood?

Free quote · 24h response · Local licensed contractors

Get My Free Basement Quotes

Free · No obligation · Response within 24h

100%
free
★★★★★
verified pros
24h
max response