Basement Renovations in Markham
Luxury basement finishing for Markham 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 Markham, street by street
Newer communities like Cornell, Cathedraltown, Berczy and Wismer feature tall, dry basements built for finishing, while mature streets in Unionville, Milliken and Markham Village reward the moisture-first approach our crews build into every project.
Markham is also one of the GTA's strongest rental markets, and since provincial housing changes opened the door to up to three units on most urban lots, a registered basement suite here is both legal and lucrative. Whatever your starting point, we turn that lower level into finished, livable square footage your family uses every day — and real value added to your Markham home.
What we build in Markham 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 Markham 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 Markham second suites.
EXPLORE STRUCTURAL WORK →From our 2026 GTA Basement Cost Report — built from the signed contract values of our completed projects.
An 832 sq ft spa basement on Sherwood Forest Drive
- Completed 2025
- 832 sq ft
- About 13 weeks
- $170,000 to $180,000
Compact footprint, high specification. A bedroom with a closet, a large bathroom with a custom tiled shower and wiring for a sauna, an L-shaped bar of 11 feet plus a return, laundry millwork and a 42-inch Napoleon linear fireplace. The project also included a bar and new staircase steps on the main level, which is why the contract sits above the usual range for this size.
What a basement in Markham 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+ |
Markham median completed project: $89,000 (Desire Basements contracts, 2022–2026). Sources: 2026 GTA cost report · cost calculator · bathroom, walkout and underpinning cost guides.
A real basement we finished in Markham
Tap to watch the walkthrough — a 40-year-old basement fully gutted and rebuilt.
