Renovation Contractor in Oshawa & Durham Region
From demo to final clean, Cornerstone delivers full turnkey kitchen renovations with white glove service across Oshawa, Whitby, Bowmanville, Ajax, Pickering, and Durham Region. One team. One contract. Everything handled.
Kitchens Built
Turnkey Service
Years Exp
Client Rating
Most contractors hand you a quote and disappear until demo day. At Cornerstone, white glove service means something specific — and it applies to every kitchen we build regardless of budget.
Before a single number is discussed, we sit down with you to understand your space, your priorities, and your budget. Then we build a plan around that.
We walk you through real cabinet, countertop, and hardware samples — no pressure, no upsell, just informed choices that fit your style and budget.
Plumber, electrician, and tile setter — all vetted and managed by us. One point of contact for the entire build. No subcontractor chaos.
You always know what happened today and what is next. We update your client portal every evening so you are never left wondering.
Final walkthrough, Owner's Manual, and full warranty documentation at handover. You know exactly what was built and how to maintain it.
Whether your kitchen is $25,000 or $130,000 — you get the same standard of service.
Start Your Kitchen Diagnostic
Cabinetry Options
We build complete kitchens from demo to final clean. Cabinetry, countertops, flooring, electrical, plumbing, tile, and permits — all under one contract, all managed by one team. You choose your cabinet tier. We deliver the same white glove build either way.
Signature Series
Built to your exact dimensions with drawer-heavy lower configuration and panel-ready construction for integrated appliances. Available in plywood or premium particle board.
Hardware
Lighting
Every Signature Series kitchen carries our maker's mark.
Craftsman Series
Custom built cabinetry with door-heavy lower configuration and premium particle board construction.
Hardware
Construction
The same installation standard as our Signature Series at a more accessible price point.
Builder Series
Curated from Aline Cabinetry's 2026 line and installed to the full Cornerstone standard. Available in plywood or particle board — you choose what fits your project and budget.
Construction
Same white glove installation. Same 5-year warranty as every Cornerstone kitchen.
Every Cornerstone kitchen — Signature, Craftsman, or Builder — gets the same white glove service and the same 5-year warranty.
"From permits to final punch list — one team, one contract, no surprises."
Cabinetry supply and installation — all three tiers available
Plumbing — sink, faucet, dishwasher, and appliance hookups
Countertop supply and installation — quartz, granite, and laminate
Backsplash — tile, slab, and full-height options
Flooring — hardwood, tile, and luxury vinyl plank
Permits pulled and managed by Cornerstone
Pot lights, under-cabinet lighting, and full electrical
Final clean, punch list, and Owner's Manual at handover

Optional Upgrades
Every Cornerstone kitchen is built to a turnkey standard. These are some of the upgrades our clients add when they want to take it further.

Custom built pull-out recycling and waste management integrated into your base cabinet layout.

Bottom and side mount utensil pull-outs for full-access base cabinet organization.
Handcrafted in maple, walnut, or white oak with smooth lacquer finish. Available in various widths and depths.
Solid maple or walnut with standard or customizable layouts to suit your organization needs.
Deep drawer peg board organizer that keeps dishes neatly in place and accessible.
Concealed side mount slides with optional touch release for two-level cutlery and utensil organization.
Ask us at your consultation what upgrades are available for your specific layout and cabinet tier.
Most contractors treat your home like a job site. We treat it like someone lives there — because someone does. Before demo starts, our full site protection protocol goes in. It stays in until the last day.
Before a single tool comes in, your floors are protected.
Your living space stays clean while we work.
Your ductwork stays clean from day one.
Every line secured before demo begins.
We take the last 30 minutes of every day to do the following:
On heavy demo and drywall days we run active air management.
This is not an add-on. It is standard on every Cornerstone project — $30,000 kitchen or $130,000 custom build.
"This is what job site protection looks like at the Cornerstone standard."
The Cornerstone Way
Three phases. One team. One contract. No surprises.
01. Planning
Before we touch a single cabinet we sit down with you. We learn how you use your kitchen, what matters most, and what your budget can do. Then we build a plan — and a price — around that.
02. Execution
Every trade on your kitchen is vetted and scheduled by us. One point of contact for the entire build. Level 4 drywall, HEPA air scrubbing, negative pressure containment, and daily cleanup from demo through installation.
03. Completion
Your price is locked. Your timeline is committed. We do a full punch list walkthrough with you before we call it done. Then you get a 5-year warranty and a full Owner's Manual.
Kitchen renovations in Durham Region range from $25,000 for a focused refresh to $150,000 and above for a full custom build. Your investment depends on four things: size of the space, cabinet tier, countertop material, and whether we are moving plumbing or electrical.
Refresh
$20,000 – $50,000
New cabinets, countertops, backsplash, and fixtures. Same layout. Big visual impact. Builder Series cabinetry.
Renovation
$50,000 – $100,000
Full gut and rebuild. New layout, updated plumbing and electrical, Craftsman Series custom cabinetry throughout.
Custom Build
$75,000 – $150,000+
High-end materials, Signature Series custom cabinetry, appliance integration, and full architectural detailing.
All pricing includes labour, materials, permits, and project management. No surprise invoices. Ever.
Book your free project diagnostic and get a fixed price before we start.
Recent Project
Full kitchen gut and rebuild for a growing family in Whitby. New custom cabinetry, quartz countertops, tile backsplash, pot lights, and hardwood flooring throughout. Completed on schedule and on budget.
View More Projects"Mike was the most professional and punctual contractor I have ever worked with. He understood how to bring my 10-year vision into reality."
We took a clean-slate room in Raglan, North Oshawa and designed, built, and installed a full custom kitchen in Oshawa — emerald cabinetry, brushed gold, a pantry-and-bar wall, and solid-birch millwork built from scratch with Blum hardware throughout.
Recent Project
Before
After
A full custom kitchen renovation in Oshawa. We removed a non-load-bearing wall to open the space and took out the bulkhead so the new upper cabinets run right to the ceiling — more storage, cleaner lines. Then rebuilt it with custom cabinetry designed around the way the family lives, finished on budget and on schedule.
"I am so impressed with the quality of work and professionalism of this company. Right from the beginning Mike was very responsive — coming to my home to really understand what needed to be done to give me the results I wanted within my budget and making recommendations to maximize the space. I highly recommend this company for any project."
Kitchen Renovations by Town
Cornerstone builds custom kitchens throughout Durham Region. Find your town below, or call us to start your project anywhere we serve.
Book your free kitchen diagnostic and get a fixed price before we start.
Durham Region's trusted renovation contractor. Led by Mike Brock since 2017. We Listen, We Build, We Deliver.