Crawl SpaceConversion Toronto
What Our Clients Have to Say
Basement Waterproofing Testimonials

Why Choose Aquatech for Crawl Space Conversion
Crawl space conversion done wrong means structural risk, moisture problems that return, or work that doesn’t meet code. Aquatech has handled crawl space conversion projects across Toronto and the GTA since 1996, with the structural, waterproofing, and code expertise to do it right the first time. Every project is backed by our lifetime warranty and price match guarantee.
✦ Lifetime warranty
✦ Price Match Guarantee
✦ BBB A+ Accredited
✦ 10-time HomeStars Best of Award winner
✦ Free on-site quote
✦ Flexible financing available
✦ 2026 Top Choice Award winner
✦ 50,000+ Customers Across Ontario
Save With Our Waterproofing Offers
Price
match guarantee
Get a lower quote from any licensed Ontario waterproofing contractor and Aquatech will match it: same scope, same materials.
$300 Off
Waterproofing Services
Save $300 on waterproofing projects over $12,000, ask your estimator to apply the discount at your free consultation.
lifetime
transferable Warranty
Enjoy peace of mind with long-term protection. Our systems are built to last and fully backed by warranty.

Our Crawl Space Conversion Toronto Process
Every crawl space conversion Toronto project starts with a full assessment of your space’s current condition: soil, moisture, and structural state: before any work begins. From there, Aquatech follows a proven four-step process covering excavation, structural reinforcement, waterproofing, and code-compliant finishing. Here’s exactly how it works.
1. Inspection and Assessment
We evaluate your crawl space’s current condition, soil, moisture levels, and structural state to determine the right scope for your conversion.
2. Excavation and Structural Reinforcement
The space is excavated to the required depth, with structural support added to safely accommodate the new headroom.
3. Moisture Control and Waterproofing
A complete waterproofing system is installed to keep the newly converted space permanently dry, critical for any space that will be finished or used for storage.
4. Finishing and Code Compliance
The space is finished to your intended use, with egress windows installed where required for a living area, and a final inspection to confirm everything meets code.
Can I Convert My Crawl Space Myself?
You can try, but crawl space conversion involves excavation, structural work, and moisture control that’s genuinely risky to get wrong: a mistake here can compromise your home’s foundation, not just the crawl space itself. It’s better to call the professionals for a project this structurally significant.
Aquatech’s crawl space conversion team handles the structural, waterproofing, and code requirements together, so nothing gets missed. Contact us for a free assessment before starting any DIY work.


Do I Need a Permit for Crawl Space Conversion in Toronto?
In most cases, yes. Any crawl space conversion involving excavation, structural modifications, or changes to your foundation or drainage system requires a permit from the City of Toronto’s Building Division. Minor work, like insulation or surface-level moisture sealing without structural changes: may not require one, but a full conversion into livable space almost always does, especially if egress windows are being added. Aquatech handles the permit process for you, so your project stays fully compliant from start to finish.
6 Benefits of Crawl Space Conversion
01
Turns Dead Space Into Usable Space
Whether it’s storage or a finished room, a crawl space conversion makes square footage you’re already paying for actually work for you.
02
Solves Moisture and Mold Problems
A properly converted, waterproofed crawl space eliminates the damp conditions mold needs to grow.
03
Improves Structural Stability
Reinforcement work during conversion strengthens your home’s foundation, not just the space above it.
04
Increases Home Value
Usable square footage, especially finished living space, adds real resale value.
05
Reduces Pest Problems
Sealing and converting the space removes the damp, dark conditions pests are drawn to.
06
Improves Energy Efficiency
A properly sealed and insulated crawl space stops outside air from forcing your HVAC to work harder.
Crawl Space Conversion vs. Full Basement Underpinning
Both methods add usable space below your home, but they solve very different problems. Crawl space conversion improves an existing low-clearance space; underpinning actually lowers your basement floor to create full ceiling height where none exists.
| Crawl Space Conversion | Basement Underpinning | |
|---|---|---|
| What it does | Improves and finishes an existing crawl space | Lowers the floor to increase ceiling height |
| Best for | Homes with a crawl space, not a low basement | Homes with a full basement that’s too low to finish |
| Cost | $30-$220/sq ft, depending on scope | Typically higher, full structural underpinning |
| Structural work | Moderate, reinforcement as needed | Extensive, foundation is lowered and re-supported |
| Permit required | Usually, if structural or drainage work is involved | Always |












