Basement renovation completed in Ottawa South
81 basement renovation projects submitted this week in Ottawa South

Basement Renovation
Ottawa South

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Basement renovation prices in Ottawa South — 2026

Estimates based on size, scope and finish level

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Full Basement Finish

Framing · Drywall · Flooring · Lighting · Bathroom

$30238 – $100794
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🏡

Legal Basement Suite

Permits · Egress · Kitchen · Bath · Full finish

$15119 – $50397
💧

Waterproofing

Interior/exterior membrane · Sump pump · Drainage

$5039 – $20158

🛁 Basement bathroom addition

$2015 — $8063

☔ Interior waterproofing system

$5039 — $20158

🌡️ Basement heating installation

$2015 — $8063

💡 Egress window installation

$2015 — $8063

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

Why choose Basement Quotes Canada for your basement renovation in Ottawa South?

Licensed & Insured Contractors

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

100% Free Quote

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

Waterproofing Expertise

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

Code-Compliant Builds

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

Basement renovation services available in Ottawa South

Basement Finishing

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

Home Theatre & Media Room

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

Legal Basement Suite

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

Basement Waterproofing

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

Underpinning

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

Basement Bathroom

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

Frequently asked questions — Basement renovation in Ottawa South

How much does it cost to finish a basement in Ottawa South?
A full basement finish in Ottawa South typically costs $30238–$100794, depending on size, bathroom inclusion and finish level. A basic finish with no bathroom starts around $5039–$15119. Get 3–5 free quotes to compare.
How much does a legal basement suite cost in Ottawa South?
A legal basement suite in Ottawa South typically costs $15119–$50397, including permits, egress windows, kitchen, bathroom and separate entrance. Rental income of $1,500–$2,500+/month is common in larger Ottawa South markets.
Do I need a permit to finish my basement in Ottawa South?
Yes — basement finishing that includes electrical, plumbing or structural work requires permits in Ottawa South. 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 Ottawa South: 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 Ottawa South?
A full basement finish in Ottawa South 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.

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