About Us | GTA Basement Renovation Specialists

About Company

20 Years of Experience

Premium basement living spaces, designed and built to last.

Custom Built Basements is the dedicated basement division of First Class Remodeling. For years our team has transformed unfinished and dated lower levels into legal suites, home theaters, spa bathrooms, and entertainment spaces, always with quality framing, proven waterproofing, and finishes built to last.

First Class Remodeling Team

Basement Design & Build Specialists

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Our Values

Licensed and insured custom basement construction

100% Licensed
& Insured

Fully licensed and insured, so your project is protected from start to finish.

Building Code
Compliant

Every build meets or exceeds Ontario building code, including legal suite requirements.

Transparent
Pricing

Detailed, itemized quotes with no hidden costs and no surprises.

Precision basement design and project planning

Timely
Completion

Realistic timelines, clear communication, and on-time project delivery.

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© 2026 Custom Built Basements

Built by First Class Remodeling

About Company