Licensed General Contractor · 15+ Years Experience
Legal Basement Apartments & Renovations in London, Ontario
Make Your Basement Legal. Add Value. Generate Income. We handle permits, design, and construction for legal second suites, underpinning, waterproofing, and complete basement renovations across London, St. Thomas, Woodstock and surrounding areas.
Free Consultations
No-obligation site assessment
Full Permit Handling
We deal with City Hall
Fixed Pricing
No hidden fees or surprises
2-Year Warranty
On all workmanship
Turn Your Basement Into a Legal, Income-Generating Apartment
A legal basement apartment is one of the smartest investments a London, Ontario homeowner can make. With rental demand at an all-time high — driven by Western University, Fanshawe College, and a growing population — a properly permitted second suite can generate $1,200 to $2,000+ per month in rental income while significantly increasing your property value.
But building a legal basement apartment isn't a DIY project. Ontario Building Code requirements cover everything from minimum ceiling heights and fire separations to egress windows, separate entrances, and independent HVAC systems. Getting it wrong means failed inspections, costly rework, and potential legal liability.
That's where we come in. As London's dedicated basement renovation specialists, we handle every aspect of your project — from initial feasibility assessment and architectural drawings to permit applications, construction, and final inspection. Whether you need underpinning to increase ceiling height, waterproofing to ensure a dry living space, or a complete suite build from scratch, we deliver turnkey results with fixed pricing and no surprises.
Our Services
Basement Renovation Solutions
From legal second suites to foundation repair, we provide comprehensive basement services across London and Southwestern Ontario.
Legal Basement Apartments
Convert your basement into a fully permitted, code-compliant second suite that generates rental income and increases your property value.
Basement Underpinning
Increase your basement ceiling height by lowering the floor — essential for meeting building code requirements and creating livable space.
Basement Waterproofing
Eliminate moisture, leaks, and flooding with interior and exterior waterproofing solutions that keep your basement dry year-round.
Basement Finishing & Renovation
Transform your unfinished or outdated basement into beautiful living space — family rooms, home offices, gyms, media rooms, and more.
Egress Windows & Emergency Exits
Install code-compliant egress windows that provide natural light, ventilation, and safe emergency exits for basement bedrooms.
Basement Bathroom Installation
Add a full or half bathroom to your basement with proper plumbing, drainage, and ventilation — essential for legal suites and comfortable living.
Foundation Repair
Fix cracks, bowing walls, settling, and structural damage to protect your home’s integrity and prevent costly future problems.
How It Works
Our 4-Step Process
A proven approach that delivers code-compliant results on time and on budget.
Consultation
Free on-site assessment. We evaluate your basement's potential, discuss your goals, and outline the path forward.
Design & Permits
3D design renderings, architectural drawings, engineering reports, and full permit submission to the City of London.
Construction
Professional, project-managed construction with regular updates, clean jobsite, and adherence to timeline and budget.
Inspection & Handover
Final municipal inspection, occupancy approval, and complete walkthrough. Your legal basement is ready.
Why Choose Us
The Legal Basements London Advantage
We combine deep expertise in Ontario Building Code with hands-on construction experience to deliver basements that pass inspection the first time.
Full permit handling and code compliance
Licensed and insured general contractor
End-to-end project management
3D design renderings before construction
Fixed pricing with no hidden fees
2-year workmanship warranty
Free consultations and site assessments
Financing options available
Reviews
What Our Clients Say
“They handled everything from permits to final inspection. Our legal basement apartment is now rented and generating great income. The whole process was smooth and professional.”
TODO: Replace with real testimonial — London
“Our 1950s bungalow had a 6-foot basement ceiling. After underpinning, we have a full 8-foot ceiling and a beautiful legal apartment. Worth every penny.”
TODO: Replace with real testimonial — London
“We had water coming in every spring. They installed an interior weeping tile system and sump pump — completely dry now, even during heavy rains. Excellent work.”
TODO: Replace with real testimonial — St. Thomas
“Transformed our dark, unfinished basement into a bright family room and home office. The egress windows made a huge difference. Feels like a whole new level of the house.”
TODO: Replace with real testimonial — Woodstock
“The egress window installation was quick and clean. Our basement bedroom finally has natural light and meets code. They even matched the exterior brick perfectly.”
TODO: Replace with real testimonial — London
“Added a full bathroom to our basement for the legal apartment conversion. Plumbing, tiling, fixtures — all done right. The tenant loves it and so do we.”
TODO: Replace with real testimonial — Strathroy
Contact Us
Get Your Free Consultation
Tell us about your basement project and we'll provide a detailed, no-obligation quote. Most consultations booked within 48 hours.
Services:Legal Apartments · Underpinning · Waterproofing · Finishing · Egress Windows · Bathrooms · Foundation Repair
Service Areas: London, St. Thomas, Woodstock, Strathroy, Tillsonburg, Ingersoll, Aylmer, Dorchester, Komoka, Lucan
Ready to Make Your Basement Legal?
Get a free consultation and site assessment. We'll evaluate your basement's potential and provide a detailed, no-obligation quote.