Concept design by Spartan AtlasGet one for your business →
4.9 · 140 reviews

Renovations built to last.

A drawn plan, a fixed price and a written schedule before demolition day, then one crew in your house until it's finished.

or call (416) 555-0148

  • Fixed-price contracts
  • Permits and drawings handled
  • Two-year workmanship warranty
17Years building
2,400+Projects completed
4.9★Average rating
Tarion registeredBuilder and vendor, additions covered
Fixed-price contractCCDC-based, signed before demolition
$5M liabilityInsured and WSIB covered
2-year workmanshipIn writing, on every project
How it runs

You'll know what week you're in.

The same six stages on every project, so you can tell at a glance whether the job is on schedule.

  1. 01

    Site visit and measure

    We walk the space with you, measure it, and talk through what's structural and what isn't. It's free and it takes about an hour.

    Week 0
  2. 02

    Drawings and a fixed price

    Layouts, elevations and a line-by-line price for the whole job. Nothing is left as an allowance that can move later.

    Weeks 1 to 3
  3. 03

    Permits and inspections

    We file the drawings, book the inspections and deal with the city. You sign once and hear from us when it's approved.

    Weeks 3 to 8
  4. 04

    Demolition and rough-in

    Protection goes down first, then framing, plumbing, electrical and HVAC. You get photographs at the end of every week.

    Weeks 1 to 4 on site
  5. 05

    Finishes

    Drywall, tile, cabinetry, trim and paint, in that order, with your selections locked in before this stage starts.

    Weeks 5 to 9 on site
  6. 06

    Walkthrough and deficiencies

    We walk it with you, write the list, and finish it. The last payment comes after that list is empty.

    Final week
Recent projects

Rooms we finished this year.

Kitchens, basements and additions across the GTA, all of them lived in while we worked.

An open-plan kitchen and living room after renovation
Kitchen and living room opened up · Leaside
A finished basement with a bar, seating and a pool table
Basement rec room · Etobicoke
A renovated kitchen with an island and stone counters
Kitchen rebuild · North York
A renovated bathroom with a walk-in shower
Main bathroom · Scarborough
A living room with wooden floors and a brick fireplace
Living room and fireplace · East York
A modern home exterior photographed at dusk
Second-floor addition · Markham
What we do

Renovations, start to finish.

Framing, plumbing, electrical, tile and cabinetry are all in-house, so nothing waits on a subtrade's other job.

01

Kitchen renovations

Custom cabinetry, stone counters, and layouts drawn around how you actually cook rather than around where the pipes are now.

02

Bathroom renovations

Waterproofing done to the letter, because it's the one part of a bathroom that gets fixed by rebuilding it.

03

Basement finishing

Rec rooms, income suites and home offices, with the underpinning, egress and permits handled where the ceiling is low.

04

Additions & second floors

Engineered, permitted and framed to match the house, so the addition doesn't announce itself from the street.

05

Whole-house renovations

Everything at once while you live elsewhere, which is faster and cheaper than doing it a room at a time.

06

Design & permits

Drawings, city submissions and inspections, whether or not we end up building it for you.

Questions

The things people ask on the first visit.

Can we live in the house while you work?

For a kitchen or a basement, usually yes. We build a dust wall, protect the floors on the route in, and set up a temporary sink where we can. For a whole-house renovation you'll want to be out, and we'll tell you that at the estimate rather than at week three.

How firm is the fixed price?

It's the price. The only things that move it are changes you ask for and genuine surprises behind a wall, and both get priced in writing before anyone carries on. Knob-and-tube and rotten subfloor are the two we find most often, so we allow for them where the age of the house makes them likely.

Who pulls the permits?

We do. Drawings, the submission, the fees and every inspection are ours to book and ours to chase. You sign the application and that's the end of your involvement.

How long does a kitchen take?

Eight to ten weeks on site once permits are in hand, and about three months from the first visit if you count drawings and approval. A bathroom is four to five weeks. An addition runs five to eight months.

When do we pay?

A deposit at signing, then payments tied to stages you can see: rough-in passed, drywall up, cabinetry set. The last one is due after the deficiency list is finished, not before.

Do you use subcontractors?

Our framers, plumbers, electricians and tile setters are on payroll. Anything requiring its own licence, like gas fitting or the structural engineering, goes to the same two firms we've used for years.

Our story

Seventeen years, one standard.

We started as a two-person crew doing kitchens in Leaside. Today we run full renovations and additions across the GTA, and the standard hasn't changed: show up when we say, quote what it really costs, and leave the site cleaner than we found it.

Every project gets a fixed price and a written schedule before we lift a hammer. You'll know who's in your home, what's happening this week, and exactly what you're paying for.

Why Cornerstone

What's in the contract.

A schedule you can hold us to

Written, stage by stage, with dates. If we slip a week you hear it from us on the Friday, not from an empty driveway on the Monday.

Selections locked before demolition

Tile, cabinetry and fixtures are chosen and ordered before the first wall comes down. Waiting on a back-ordered vanity is the most common way a renovation stalls.

One site supervisor

The same person is on your job every day and answers their own phone. They know what happened yesterday without having to ask.

Photographs every Friday

Progress shots and next week's plan, by text. Useful when you're at work all day and the house is somebody else's job site.

Clean at the end of every day

Tools away, floor swept, dust wall sealed. It costs us twenty minutes and it's the thing clients mention most.

The deficiency list is ours to close

We write it with you at the walkthrough and we finish it before the final invoice. Nothing gets left for you to chase in March.

Reviews

Homeowners who'd hire us again.

A few words from recent projects across the GTA.

Cornerstone gutted and rebuilt our kitchen in three weeks flat. Fixed quote, spotless site every single night, and it came in exactly on budget. We've already booked them for the basement.
Sarah & Mike D.Kitchen remodel · Leaside
The only contractor who gave us a real timeline and then actually hit it.
Dave K.Basement · Etobicoke
Clean, professional crew. They treated our house like it was their own.
Priya S.Addition · North York
Detailed quote up front and zero surprises at the end. Rare these days.
Tom B.Bathroom · Scarborough

Planning a renovation this year?

Book a site visit and we'll send a drawn plan and a fixed price within a week.

Call for an estimate

Get an estimate

We'll walk the space, price the whole job, and send it in writing within a week.

No obligation, and no charge for the visit.

Where we build

Residential renovations and additions across Toronto and the inner GTA.

  • Serving Toronto & the GTA
  • Leaside · Etobicoke · North York · Scarborough

Areas we serve

LeasideEast YorkEtobicokeNorth YorkScarboroughMarkhamVaughanMississauga
(416) 555-0148