Basement Renovations in Innisfil
Luxury basement finishing for Innisfil homes — free 3D design, itemized fixed pricing, lifetime warranty, and a written timeline backed by our $200-per-day on-time guarantee.
Get a Free Quote →VIEW OUR PROJECTSBasement renovation in Innisfil, street by street
Innisfil stretches from lakefront Alcona and Friday Harbour to village streets in Stroud, Lefroy and Cookstown — newer builds bring dry, open basements ready for finishing, while lakeside and older properties reward moisture-first construction.
Cottage-country lifestyle with commuter convenience means Innisfil basements become guest suites, rec rooms and rental units. Whatever your starting point, we turn that lower level into finished, livable square footage — and real value added to your Innisfil home.
What we build in Innisfil basements
Basement finishing
Theatres, bars, gyms and family spaces — metal studs and moisture-resistant drywall as standard, finished to match the rest of your home.
EXPLORE BASEMENT FINISHING →
Home renovations
Kitchens, bathrooms and whole-home updates for Innisfil families, built with the same crew and warranty as our basements.
EXPLORE HOME RENOVATIONS →
Structural & legal suites
Underpinning for ceiling height, waterproofing, and permitted separate entrances for legal Innisfil second suites.
EXPLORE STRUCTURAL WORK →From our 2026 GTA Basement Cost Report — built from the signed contract values of our completed projects.
A 1,777 sq ft two-bedroom basement on Nottingham Forest Road
- Completed 2025
- 1,777 sq ft
- About 13 weeks
- $160,000 to $170,000
We have not published an Innisfil project yet, so here is a recent one from Bradford, built to the same specification and warranty we bring to Innisfil.
Two bedrooms, a bathroom with a custom tiled shower, and a laundry room with washer plumbing and a sink. A slat feature wall with integrated LED, soundproofing, seven solid-core doors, window casings, 62 pot lights and a heat-pipe relocation, on an insulated Dri-Core subfloor. Built in two sections, which added about a week and a half.
What a basement in Innisfil costs, by scope
The same published rates and itemized add-ons we quote everywhere in the GTA. Permits, inspections, free 3D design and a lifetime warranty are included in every line.
| Scope | Typical cost |
|---|---|
| 1,000 sq ft finished at Essential ($55 per sq ft) | $55,000 |
| 1,000 sq ft finished at Signature ($70 per sq ft) | $70,000 |
| 1,000 sq ft finished at Luxury ($90 per sq ft) | $90,000 |
| The family basement: media wall, full bathroom, laundry, around 1,000 sq ft | $60,000–$85,000 |
| The entertainment build: theatre or media room, bar, gym, spa bathroom, 1,000–1,300 sq ft | $95,000–$130,000 |
| Three-piece bathroom with tiled shower | $18,000–$28,000 |
| Custom wet bar | +$15,000 |
| Home theatre setup | +$20,000 |
| Walkout entrance, permits included | $15,000–$25,000 |
| Full-perimeter underpinning for low ceilings | $60,000–$120,000 |
| Legal basement apartment, purpose-built | $75,000–$110,000+ |
We do not yet publish a separate Innisfil median; Innisfil projects are quoted against the GTA median of $103,000. Sources: 2026 GTA cost report · cost calculator · bathroom, walkout and underpinning cost guides.