REDEFINE YOUR
BASEMENT
Transform Your Basement with London's Trusted Renovation & Legal Apartment Experts
15+ Years
of helping London homeowners
Licensed & Insured
General contractor
Full Permit Handling
We deal with City Hall
2-Year Warranty
On all workmanship
You Found London's Basement Experts
London's Premier Authority in Legal Basements, Waterproofing, and Renovation
At Legal Basements London, we don't just finish basements — we transform them. We don't just handle permits — we make the entire process effortless.
As a trusted basement renovation company in London, Ontario, we've spent over 15 years helping homeowners reclaim and protect their lower levels. From foundation repair and waterproofing to stunning legal apartment conversions, we deliver expert solutions that keep your home dry, safe, and livable.
Whether you're dealing with water intrusions, low ceiling height, or just tired of wasting valuable square footage, you're in the right place. We're here to fix it — once and for all.
Why Legal Basements London is the Choice for You:
People
The strength of Legal Basements London lies in our remarkable team. From experienced designers to meticulous tradespeople, our professionals are committed to exceeding your expectations.
Process
We prioritize clarity and ease throughout the entire project. Our 4-step method ensures a transparent and satisfying journey, leading to a seamless renovation without any stress.
Experience
With over 15 years of leadership in basement renovations and legal apartment conversions, we deliver custom solutions that exceed expectations every time.
Products
We use only top-grade, moisture-resistant materials and proven waterproofing systems that guarantee lasting performance and beauty for your basement.
Our Services
Comprehensive Basement Solutions
From legal second suites to foundation repair, we provide full-service basement renovations 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Transform your unfinished or outdated basement into beautiful living space — family rooms, home offices, gyms, media rooms, and more.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
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 your timeline.
Inspection & Handover
Final municipal inspection, occupancy approval, and complete walkthrough. Your legal basement is ready.
Reviews
What Our Clients Say
Based on Google Reviews
“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.”
Sarah M. — 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.”
James & Karen P. — 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.”
Dave R. — 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.”
Linda T. — 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.”
Michael B. — 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.”
Priya & Anand K. — Strathroy
Contact Us
Redefine Your Basement
Schedule your consultation today and see how we can make your basement the space you've always imagined.
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.