Renovation Contractor in Oshawa & Durham Region
Our Written Guarantees
Eight guarantees that stand behind your project. This is how we turn "trust me" into something you can hold in writing. These are the promises behind "We Listen, We Build, We Deliver."
One Symbol, Eight Promises
One crest stands for all eight guarantees below. That is the price lock, the on-time guarantee on larger projects, the daily cleanup, the 5-year warranty, and more.
We wrote down eight guarantees. They cover what homeowners worry about most: the price, the timeline, the mess, the updates, and what happens after we are gone. Tap any guarantee below to see how it works.
Your written price is locked in before we start.
Learn more →On projects of $15,000+ that run about a month or longer, we credit you $300 for each day we miss the completion date for reasons within our control.
Learn more →HEPA air scrubbers and sealed dust walls help keep dust in the work area and out of the rest of your home.
Learn more →We reset the site at the end of each day on site, before we leave, to help keep your home livable.
Learn more →See progress, approvals, and documents in your project portal.
Learn more →Our work is backed by a 5-year workmanship warranty.
Learn more →On renovation projects you get an Owner's Manual at handover. It has finishes, documents, warranty, and care guides.
Learn more →Electrical and plumbing done by licensed trades. Permits pulled wherever your job requires one. $5,000,000 liability insurance and current WSIB coverage. Ask for proof anytime.
Eight guarantees, working together, so you know where your project stands and what we stand behind. That is what makes a renovation with Cornerstone different. It starts with one honest conversation about your project.
Durham Region's trusted renovation contractor. Led by Mike Brock since 2017. We Listen, We Build, We Deliver.
