DURHAM REGION'S PREMIER BUILDER

TURNKEY KITCHEN BUILDSOSHAWA & DURHAM REGION

From demo to final clean, Cornerstone delivers full turnkey kitchens with white glove service across Oshawa, Whitby, Bowmanville, Ajax, Pickering, and Durham Region. One team. One contract. Everything handled.

150+

KITCHENS BUILT

100%

TURNKEY SERVICE

35+

YEARS EXP

4.6

CLIENT RATING

Our Service Standard

White Glove Service At Every Budget Level

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.

Design Consultation Included

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.

Material Selection Guidance

We walk you through real cabinet, countertop, and hardware samples — no pressure, no upsell, just informed choices that fit your style and budget.

Full Trade Coordination

Plumber, electrician, and tile setter — all vetted and managed by us. One point of contact for the entire build. No subcontractor chaos.

Daily Site Updates

You always know what happened today and what is next. We update your client portal every evening so you are never left wondering.

White Glove Handover

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.

Cornerstone Construction Professional Renovation
Modern Kitchen Remodel Detail
Finished Basement in Oshawa

CABINETRY OPTIONS

FULL TURNKEY KITCHEN BUILDS — EVERY BUDGET, SAME STANDARD

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

Full Custom Cabinetry

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

  • Häfele AXILO cabinet levelling system
  • Blum Movento soft-close drawer slides
  • Blum Clip Top Blumotion hinges and mounting plates
  • Solid wood dovetail drawer boxes

Lighting

  • Integrated under-cabinet light panel custom fitted to cabinet base
  • Recessed LED channel with opal diffuser — full length, no hot spots
  • Colour-matched to cabinet exterior with countersunk fasteners

Every Signature Series kitchen carries our maker's mark.

CRAFTSMAN SERIES

Custom Cabinetry

Custom built cabinetry with door-heavy lower configuration and premium particle board construction.

Hardware

  • Häfele AXILO cabinet levelling system
  • Blum Movento soft-close drawer slides
  • Blum Clip Top Blumotion hinges and mounting plates

Construction

  • Door-heavy lower configuration
  • Premium particle board box
  • Full-extension soft-close glides throughout

The same installation standard as our Signature Series at a more accessible price point.

BUILDER SERIES

Stock Cabinetry

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

  • Frameless European box construction
  • Solid wood dovetail drawer boxes
  • Full-extension soft-close drawer glides
  • 6-way adjustable soft-close hinges

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.

Every Kitchen Includes

Everything Done Under One Roof

"From permits to final punch list — one team, one contract, no surprises."

Cabinetry supply and installation — all three tiers available

Countertop supply and installation — quartz, granite, and laminate

Flooring — hardwood, tile, and luxury vinyl plank

Pot lights, under-cabinet lighting, and full electrical

Plumbing — sink, faucet, dishwasher, and appliance hookups

Backsplash — tile, slab, and full-height options

Permits pulled and managed by Cornerstone

Final clean, punch list, and Owner's Manual at handover

Cornerstone Construction kitchen renovation project 1
Cornerstone Construction kitchen renovation project 2
Cornerstone Construction kitchen renovation project 3

OPTIONAL UPGRADES

Interior Organizers & Custom Additions

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.

Dovetail Recycle Centre

Dovetail Recycle Centre

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

Rev-A-Shelf Pull-Outs

Rev-A-Shelf Pull-Outs

Bottom and side mount utensil pull-outs for full-access base cabinet organization.

Angled Spice Racks

Angled Spice Racks

Handcrafted in maple, walnut, or white oak with smooth lacquer finish. Available in various widths and depths.

Cutlery & Utensil Trays

Cutlery & Utensil Trays

Solid maple or walnut with standard or customizable layouts to suit your organization needs.

Horizontal Plate Rack

Horizontal Plate Rack

Deep drawer peg board organizer that keeps dishes neatly in place and accessible.

2-Tier Drawer System

2-Tier Drawer System

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.

The Cornerstone Standard

Your Home Is Protected From Day One

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.

FLOOR ARMOUR

Before a single tool comes in, your floors are protected.

  • Guardia Pro on all hardwood, tile, and stone surfaces
  • HEPA vacuumed before protection goes down
  • Self-adhesive, breathable, and waterproof
  • Floors continue to cure underneath

SEALED DUST CONTAINMENT

Your living space stays clean while we work.

  • Floor-to-ceiling polyethylene barriers at all transitions
  • Heavy-duty zipper doors for crew access
  • Tuck tape sealed at every seam
  • Smoke detector dust covers on every sensor

HVAC PROTECTION

Your ductwork stays clean from day one.

  • MERV 5 filter pads on every supply and return vent
  • Installed before demo starts
  • Keeps silica, gypsum, and drywall dust out of your ductwork

UTILITY SAFING-OFF

Every line secured before demo begins.

  • Water lines capped with SharkBite Max brass fittings
  • Electrical circuits locked out using LOTO procedures
  • Every line tagged and labelled
  • Water restored to the rest of the home same day

DAILY RESET

We take the last 30 minutes of every day to do the following:

  • All garbage removed to the bin
  • Tools, cords, and materials packed up and organised
  • Work zone HEPA vacuumed
  • Floor protection and barriers inspected and re-taped
  • Washroom cleaned twice a week

NEGATIVE PRESSURE ZONE

On heavy demo and drywall days we run active air management.

  • HEPA air scrubber running continuously
  • Negative pressure maintained — air pulled out faster than it comes in
  • Dust physically cannot travel to the rest of your home
  • The same standard used in commercial construction and remediation

This is not an add-on. It is standard on every Cornerstone project — $30,000 kitchen or $130,000 custom build.

Cornerstone Construction floor protection standardsCornerstone Construction dust containment barriers

"This is what job site protection looks like at the Cornerstone standard."

THE CORNERSTONE WAY

We Listen, We Build, We Deliver

Three phases. One team. One contract. No surprises.

01. PLANNING

We Listen

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

We Build

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

We Deliver

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.

What to Expect

Kitchen Renovation Investment Guide

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.

Ready to Build Your Kitchen?

Book your free project diagnostic and get a fixed price before we start.

Samuel Kitchen Renovation in Whitby, ON
Recent Project

Samuel Kitchen — Whitby, ON

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.

"Mike was the most professional and punctual contractor I have ever worked with. He understood how to bring my 10-year vision into reality."

— Jolette Samuel, Kitchen Renovation, Oshawa
Common Questions

Kitchen Renovation Questions

Most kitchen renovations take 4 to 8 weeks depending on scope. A focused refresh runs 3 to 4 weeks. A full gut and rebuild with custom cabinetry runs 6 to 10 weeks. We give you a committed timeline before we start and we hold to it.

Ready to Build Your Kitchen?

Book your free kitchen diagnostic and get a fixed price before we start.