Basement Remodeling Cornwall

Transform Your Unfinished Basement

An unfinished basement is a blank canvas with massive potential. Whether you need a home office, a recreational room for the family, or a legal secondary suite to generate rental income, Ground Level Construction provides the expertise to do it right. We handle everything from the initial framing and insulation to the final flooring and paint.

Basement Waterproofing — Protecting Your Foundation

Before finishing a basement, ensuring it is dry and secure is paramount. Cornwall's climate can lead to foundation seepage and sump pump failures. We provide comprehensive interior and exterior waterproofing solutions, including foundation crack repair, drainage tile installation, and high-performance sump pump systems.

Legal Basement Suite Development

For landlords and investors, converting a basement into a legal rental unit is one of the best ways to increase property value and cash flow. We are experts in Ontario Building Code requirements for secondary suites, including fire separation, egress windows, independent heating controls, and ceiling height standards. We manage the entire permit process to ensure your unit is fully legal and safe.

Basement Framing, Drywall & Insulation

Proper insulation and framing are critical for a comfortable, energy-efficient basement. We use high-R-value insulation and mold-resistant drywall to ensure your new living space feels like a natural extension of your home, not a cold cellar. Our framing is precise, ensuring perfectly straight walls and professional finishes.