Basement Waterproofing Across York Region
Leaquida provides basement waterproofing across York Region — from Vaughan, Markham and Richmond Hill to Newmarket, Aurora, Stouffville, King, East Gwillimbury and Georgina on Lake Simcoe.
York Region runs water supply and trunk sewers, while each city or town manages local sewers, permits and any rebates — so the rules depend on where you live.
Where We Work in York Region
Choose your community for local conditions and rebates. Pages for smaller towns are coming — we already work there.
Vaughan
Humber and Don headwaters, Black Creek and large finished basements.
Rebate: 50% of a backwater valve, up to $750.
Markham
Rouge River system, heritage Unionville and the West Thornhill flood control area.
Rebate: Up to $5,000 for weeping tile + sump pump; valves up to $2,000.
Richmond Hill
Clay in the south, Oak Ridges Moraine sand and groundwater in the north.
Rebate: Up to $1,500 for a backwater valve.
Newmarket
Historic Main Street homes and newer subdivisions along the East Holland River.
Rebate: We are not aware of a local homeowner rebate in 2026 — check with the municipality.
Aurora
Moraine soils and the East Holland River headwaters; many 1970s–2000s homes.
Rebate: We are not aware of a local homeowner rebate in 2026 — check with the municipality.
Stouffville
Rouge River headwaters, Musselman Lake and fast-growing new subdivisions.
Rebate: We are not aware of a local homeowner rebate in 2026 — check with the municipality.
King
King City, Nobleton and Schomberg on the Oak Ridges Moraine; many rural homes and estates.
Rebate: We are not aware of a local homeowner rebate in 2026 — check with the municipality.
East Gwillimbury
Holland Landing, Mount Albert, Sharon and new Queensville subdivisions near the Holland River.
Rebate: We are not aware of a local homeowner rebate in 2026 — check with the municipality.
Georgina
Keswick, Sutton and Pefferlaw on Lake Simcoe — high water tables and converted cottages.
Rebate: We are not aware of a local homeowner rebate in 2026 — check with the municipality.
Why Basements Leak in York Region
The Oak Ridges Moraine crosses York Region, with clay plains to the south and Lake Simcoe to the north. That mix makes groundwater and soil very different from town to town.
Oak Ridges Moraine
Sand and gravel in the moraine carry a lot of groundwater, so basements in Richmond Hill, Aurora and King can sit close to it.
Clay plains
Vaughan, Markham and south Richmond Hill sit largely on clay that drains slowly and holds water against walls.
River headwaters
The Humber, Don, Rouge and Holland rivers all start in York Region, with branches through many neighbourhoods.
Lake Simcoe shore
Georgina and East Gwillimbury homes near the lake often have high water tables and older, converted cottages.
Basement Flooding Rebates in York Region
Rebates in York Region are run by each municipality, not by the Region.
| Municipality | Program | What it pays |
|---|---|---|
| Markham | Private Plumbing Protection Rebate | Weeping tile + sump pump up to $5,000; valves up to $1,750–$2,000; lateral repair up to $2,500 |
| Richmond Hill | Backwater Valve Subsidy | Up to $1,500 |
| Vaughan | Sanitary Back-Water Valve Subsidy | 50%, up to $750 |
| Newmarket, Aurora, Stouffville, King, East Gwillimbury, Georgina | — | We are not aware of a local homeowner rebate in 2026 — check with the municipality. |
Programs and deadlines can change; Markham’s building permit deadline is April 30, 2027. Check each municipality’s website before you plan around a rebate.
Our Basement Waterproofing Services in York Region
From $100 / lin. ftExterior Basement Waterproofing
Excavation to the footing, membrane, drainage board and new weeping tile — water never reaches the wall.
Learn more →
From $50 / lin. ftInterior Basement Waterproofing
Drainage under the floor along the walls and a sealed sump pump — no digging in your yard.
Learn more →
$500 – $1,500 / crackFoundation Crack Repair
Injection that seals leaking foundation cracks from the inside, usually in one visit.
Learn more →
From $500 / unitSump Pump Installation
Sealed basin, reliable pump, discharge line and optional battery backup.
Learn more →Basement Waterproofing Cost in York Region
Typical 2026 price ranges, before any rebate. Your exact price is written in your quote after a free inspection.
| Service | Price range | Typical duration* |
|---|---|---|
| Interior waterproofing | $50 – $120 per linear foot | 2 – 5 days |
| Exterior waterproofing | $100 – $250 per linear foot | 3 – 7 days |
| Full basement project | $3,000 – $35,000 | Depends on scope |
| Foundation crack repair | $500 – $1,500 per crack | Usually one visit |
| Sump pump installation | $500 – $3,900 per unit | Usually 1 day |
| Backwater valve | $2,000 – $4,200 per unit | Usually 1 day + permit |
| Inspection & written quote | Free | One visit |
*Typical for an average home; your schedule is confirmed in the quote.
Our Process
Free inspection
We check inside and outside, the sump pit, floor drains, grading and downspouts, and find the real cause.
Written quote
Scope, price, schedule and warranty in writing — plus which local rebates you can claim.
Permits
Where a permit or pre-approval is needed, we prepare the quote, sketch and paperwork.
The work
Our own crew protects your property and completes the job.
Test & paperwork
We test the system, clean up and give you the itemized invoice for any claim.
Basement Waterproofing in York Region: Questions & Answers
Do you work in all of York Region?
Yes — Vaughan, Markham, Richmond Hill, Newmarket, Aurora, Whitchurch-Stouffville, King, East Gwillimbury and Georgina. For towns further north we book inspections ahead.
Which York Region cities have basement flooding rebates?
Markham (Private Plumbing Protection Rebate), Richmond Hill (backwater valve subsidy up to $1,500) and Vaughan (backwater valve subsidy, 50% up to $750). We are not aware of similar programs in the other towns in 2026.
My home is on the Oak Ridges Moraine. Why is my basement so wet?
Moraine soils carry a lot of groundwater. Homes there often need reliable drainage and a sealed sump pump with battery backup rather than only wall sealing.
How much does waterproofing cost in York Region?
Interior waterproofing usually costs $50–$120 per linear foot and exterior $100–$250 per linear foot; most full projects are $3,000–$35,000. The inspection and quote are free.
Book a Free Basement Inspection in York Region
Tell us where you live and what is happening in your basement. We will find where water gets in, explain the local rebates and give you a written quote.
Call now — Mon–Fri 7 AM – 4 PM(416) 992-5858Office: 58 Six Point Rd, Etobicoke, ON M8Z 2X2
Email: info@leaquida.ca
Licence No.: P94 4418977 (licensed contractor)