General Contractor in Oshawa, Ontario
Renovations, fit-outs and construction in Oshawa, from a licensed, WSIB registered and insured contractor.
Get a Free QuoteCall (647) 802-0439- 35+ years of experience
- Licensed general contractor
- WSIB registered
- $5M liability insurance
- Serving the GTA and Ontario
Building in Oshawa
We serve Oshawa homeowners and businesses with renovations, additions and commercial work built to last.
Right now we are partway through a whole-home interior renovation in Oshawa, covering layout reconfiguration, finishes and systems updates. It is a good example of how we plan phased residential work from the first walkthrough through to handover.
Services we provide in Oshawa
Home Renovations and Additions
Kitchens, bathrooms, full-home renovations and additions, built to last and finished with care.
Commercial Renovations and Tenant Improvements
Scoped upgrades to leased and owner-occupied spaces, from layout changes to finishes, planned around your operations.
Flooring and Epoxy Installations
Vinyl plank, epoxy, rubber, tile and high-traffic finishes, installed to last.
Exterior and Site Maintenance
Concrete, stucco, drainage, line painting and façade work for buildings that need to keep operating.
Need windows, doors or garage doors?
We supply and install windows, entry doors and garage doors for homes and businesses across the GTA. Our sister company, Diamond Garage Pros, handles the installation as our specialist sub.
See windows, doors and garage doorsCommon questions
Do you work in Oshawa?
Yes. Oshawa is part of our service area, and we are licensed, WSIB registered and insured to work there. Send the form on this page or call (647) 802-0439 to start the conversation.
Are you licensed and insured?
Yes. We are a licensed contractor, registered with WSIB, and we carry $5,000,000 in commercial general liability insurance. Certificates are available on request.
Can you work in occupied or time-sensitive spaces?
Yes. We are often brought in for work that has to happen around people and operations, with controlled site access, careful sequencing and after-hours work where the building needs it.
How do I get a quote?
Send the form on this page or call (647) 802-0439. We will talk through the scope with you, and if it makes sense we will visit the site before pricing.
Request a free quote
Tell us what you are planning. A real person reads every request, and we reply within one business day.
- Free, no-pressure conversation about your project
- Licensed, WSIB registered and fully insured
- Clear scope before any work starts
Call: (647) 802-0439
Email: info@diamondhabuilders.com
Mailing address: 200 Consumers Road, North York, ON M2J 4R4