- March 20, 2026
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REQUEST A QUOTELegal basement renovation in Scarborough requires licensed professionals who understand Ontario Building Code requirements, local zoning bylaws, permits, and safety standards. As a licensed basement renovation company serving Scarborough and The GTA, we help homeowners create fully legal, code-compliant basement spaces that meet all provincial and municipal regulations.
Whether you plan to build a legal basement apartment, a rental unit, or a new living space for your family, we manage the entire renovation process correctly from start to finish. Our services include permit applications, inspections, structural modifications, fire separation, soundproofing, and high-quality finishes designed for long-term durability. We transform unfinished or outdated basements into safe, functional living areas such as rental suites, family rooms, home offices, and modern entertainment spaces.
Our goal is to deliver affordable basement renovation in Scarborough that look great, meet all legal requirements, and perform reliably for years without hidden issues or unnecessary delays. Every basement renovation project is customized to your home and completed with attention to detail, clear communication, and dependable timelines, ensuring a smooth and stress-free experience.
| Basic Basement Finishing | $35,000 – $55,000 |
| Full Basement Renovation | $55,000 – $85,000 |
| Legal Secondary Suite (Basement Apartment) | $90,000 – $150,000+ |
| Waterproofing / Moisture Control | $3,000 – $15,000 |
| Custom Feature | $5,000 – $25,000+ |
Absolutely. A finished basement is one of the highest-yield home improvements you can make, often seeing a Return on Investment (ROI) of 70% to 75%. Beyond the financial gain, it significantly increases your home’s usable square footage allowing for home offices, gyms, or guest suites that make the property more attractive to future buyers.
In the GTA, you must have a building permit if you are changing the structural layout, adding a bathroom, or modifying the HVAC/plumbing. Minor cosmetic updates like new flooring or painting do not require one, but failing to get a permit for structural work can lead to “Work Without Permit” penalties and issues during home resale
Yes, basement renovation with low ceilings is possible using smart layout planning, recessed lighting, and code-compliant ceiling heights.
Yes, a legal basement renovation can significantly increase property value and rental potential because it complies with safety and zoning laws.
A legal basement renovation usually takes longer than standard basement finishing due to inspections, permits, and required safety upgrades.
Yes, once approved, a legal basement renovation allows the space to be used as a secondary suite, subject to local bylaws.
ASM Constructions and Renovations started in 2019. The Director, Abdul Kayum, has over ten years of international experience in construction and renovation. His career began in the Middle East. There, he worked on many residential and commercial projects. His strong work ethic, careful attention, and consistent results helped him earn a solid reputation.