Residential & Commercial Renovations Across Oshawa and the Greater Toronto Area
Expert Renovations in Oshawa, Durham Region, and Surrounding Areas
Welcome to Cornerstone Construction
We bring expertise and precision to home renovations and commercial construction across the Greater Toronto Area (GTA). We proudly serve Oshawa, Bowmanville, Whitby, Ajax, Pickering, Newcastle, Scarborough, Stouffville, Peterborough, and beyond.
Whether you're remodeling your kitchen or upgrading your business space, we deliver top-tier results. Our focus is on transparency, quality, and care.
Learn more about our residential construction services
Learn more about our commercial construction services
Transforming Homes and Businesses Across Oshawa and GTA
Your Trusted Partner for Home & Commercial Renovations in Ontario
At Cornerstone Construction, we believe every space—whether residential or commercial—should reflect your unique style, needs, and goals. As Ontario’s trusted general contractor, we specialize in transforming homes and businesses into stunning, functional spaces that stand the test of time. From kitchen renovations and custom cabinetry to office fit-ups and retail upgrades, our unmatched craftsmanship and attention to detail ensure your project is completed on time, on budget, and to the highest standards.
Explore how we bring your vision to life with our comprehensive home and commercial renovation services.
Contact our team today to start your journey toward a space designed just for you.
Creating Spaces You’ll Love, with a Process You’ll Enjoy
Why Oshawa Homeowners and Businesses Trust Cornerstone Construction
At Cornerstone Construction, we know a successful project is about more than exceptional craftsmanship—it’s about the experience from start to finish.
1. Full-Service General Contractor
From kitchen transformations and basement upgrades to commercial fit-outs, we deliver seamless execution and expert results.
2. Licensed and Insured
Your project is in the hands of fully qualified professionals who prioritize safety, quality, and compliance.
3. A Process You’ll Enjoy
We focus on listening to your ideas, understanding your vision, and maintaining clear communication at every stage. You’ll receive regular updates, and we ensure job sites remain clean and organized.
4. Local Commitment
Proudly serving Oshawa, Whitby, Bowmanville, Ajax, Pickering, Scarborough, and beyond, we support local trades while delivering outstanding results to our community.
5. Craftsmanship You Can Trust
We combine precision, attention to detail, and premium materials to create spaces you’ll cherish for years to come.
Discover The Cornerstone Difference
Explore our project portfolio and client reviews to see why homeowners and businesses trust Cornerstone Construction to bring their visions to life.
Our Services Overview
Custom Home Renovations in Durham Region and GTA
Create the home of your dreams with expertly crafted renovations tailored to your lifestyle:
• Kitchen Renovations: Beautiful, functional kitchens designed with custom cabinetry, premium finishes, and innovative layouts.
• Bathroom Remodels: Transform your bathroom into a luxurious, spa-like retreat with modern fixtures and elegant designs.
• Basement Upgrades: Maximize your space with custom living areas, entertainment zones, or home offices.
• General Contracting: Full-service project management for home renovations, ensuring seamless execution and superior results.
Explore our project portfolio and client reviews to see why homeowners and businesses trust us.
Learn More About Our Home Renovations
Professional Commercial Renovations for GTA Businesses
Enhance your business space with thoughtful designs and renovations that align with your brand and goals:
• Office Fit-Ups: Modern, functional layouts that improve workflow and productivity.
• Retail Renovations: Stylish, efficient spaces that attract customers and enhance the shopping experience.
• Restaurants and Cafés: Practical yet inviting spaces that balance aesthetics with operational efficiency.
• Custom Commercial Solutions: Tailored renovations designed to meet your specific business needs.
Explore Our Commercial Renovation Services
Want to know more about what to expect for your renovation? Check out these resources:
Detailed Costs for Kitchen and Bathroom Renovations in GTA
Bathroom Renovation Costs: A Complete Breakdown
Kitchen Renovation Costs: A Complete Breakdown
Why do contractors charge a markup on materials
Cornerstone Construction is ready to turn your vision into reality. With expertise in kitchen renovations, bathroom upgrades, and custom cabinetry, we’re here to help you create a space that reflects your lifestyle.
Get in touch with us and let’s start your next project together!
Latest Insights from Cornerstone Construction
Stay inspired with our recent blog posts! Explore expert tips, renovation ideas, and behind-the-scenes stories that showcase how we bring your vision to life. Check back regularly for updates and new content designed to help you plan your next project.