Basement Renovations in Ajax
Luxury basement finishing for Ajax 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 Ajax, street by street
Ajax's housing stock runs from mature lakeside streets to newer communities in Audley and Nottingham — newer builds bring tall, dry basements ready for finishing, while older homes closer to the lake reward moisture-first construction.
Durham Region's rental demand keeps climbing, and a code-built basement suite in Ajax is one of the area's best income plays. Whatever your starting point, we turn that lower level into finished, livable square footage — and real value added to your Ajax home.
What we build in Ajax 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 Ajax 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 Ajax second suites.
EXPLORE STRUCTURAL WORK →Subdivisions from the 1990s onward, with rough-ins already in the slab
Ajax basements tend to be easy to like. Most of the housing in Audley, Nottingham and the streets north of Highway 2 went up between the 1990s and the 2010s, which means poured-concrete foundations, ceilings of eight feet or more and, in a good share of homes, a three-piece bathroom rough-in the builder left in the slab. When the drain is already there, a bathroom that runs $18,000 to $28,000 elsewhere lands at the lower end of that range, and the schedule shortens with it.
The older streets near the lake, in Pickering Beach and South Ajax, are a different story. Bungalows from the 1950s and 1960s sit lower, with block walls and ceilings under seven feet, and they get a moisture check and an egress plan before we talk finishes.
Permits go through the Town of Ajax building department. A finished basement with a new bathroom or bedroom needs one, and we prepare the drawings and file them.
Our recent Ajax project on Wilsongary Circle finished 879 square feet for $90,000 to $100,000, a realistic figure for a family space with a bathroom and a proper media wall. Richmond Hill to Ajax is about 40 minutes across the 407 and down the 412, and we treat Durham as home turf, not a stretch.
From our 2026 GTA Basement Cost Report — built from the signed contract values of our completed projects.
An 879 sq ft basement on Wilsongary Circle
- Completed 2023
- 879 sq ft
- About 12 weeks
- $90,000 to $100,000
A bar with wine racks and a quartz backsplash carried to the ceiling, a 60-inch linear fireplace set into a six-niche feature wall, and an MDF feature wall opposite. A bathroom with a custom tiled shower, six doors, 37 pot lights and refinished staircase steps.
What a basement in Ajax 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 Ajax median; Ajax projects are quoted against the GTA median of $103,000. Sources: 2026 GTA cost report · cost calculator · bathroom, walkout and underpinning cost guides.