French Drain Installation in Aurora — Stop Basement Water

OCM Excavation & Construction installs French drains across Aurora to stop basement seepage, foundation leaks, and chronic backyard pooling on the clay-loam soils that dominate York Region. We dig, line, gravel, and pipe full perimeter drains, exterior weeping tile replacements, and yard catchment systems for homes from Bayview Glen to St. Andrew’s, Aurora Heights, and the Wellington corridor. Call 416-317-3090 for a free site visit and a written quote — no upsell, no pressure.

Why Aurora Homes Need French Drains

Aurora sits on heavy clay-loam glacial till. Clay holds water against your foundation wall for days after a storm, which is why basement leaks here are rarely a roof or grading problem — they are a subsurface drainage problem. The West Holland River watershed, regulated by the Lake Simcoe Region Conservation Authority (LSRCA), also keeps the local water table high through spring and fall. A properly installed French drain pulls that water away from your foundation through a perforated pipe set in washed stone, wrapped in filter fabric, and pitched to daylight or a sump.

We see the same failures across Aurora year after year: cracked parge coat at the footing, rusted-out 1970s clay weeping tile, sump pumps running 24/7, efflorescence on basement walls, and standing water in low spots near Yonge and Wellington. A French drain fixes the cause, not the symptom.

Types of French Drains We Install in Aurora

Not every wet basement needs the same drain. We match the system to the soil, the lot, and the leak:

• Exterior perimeter (weeping tile replacement): Full excavation to the footing — typically 7 to 9 feet deep — with new 4-inch perforated PVC, 19mm clear stone, filter fabric, and dimpled membrane against the wall. This is the gold standard for Aurora Heights bungalows and older two-storeys with original tile.
• Interior perimeter: Saw-cut the basement slab around the footing, install perforated pipe in stone, tie to a new sump pit. Used when exterior excavation is blocked by an attached garage, deck, or interlock.
• Yard French drain (curtain drain): Shallower trench (24 to 36 inches) across a wet backyard, pitched to a dry well or rear lot line. Common request on the larger Estate Residential lots in St. Andrew’s and the Hills.
• Window-well drains: Tied into the perimeter system so window wells stop filling during downpours.

Our French Drain Process in Aurora

Every Aurora job follows the same disciplined sequence:

1. Site assessment. We walk the lot, check downspouts, grade, and where water shows up inside. Free, no obligation.
2. Locates and permits. Ontario One Call (utility locates) is mandatory and free; we book it five business days out. LSRCA approval is checked for lots near the West Holland tributaries.
3. Excavation. Mini-excavator or full-size machine depending on lot access. Soil staged on plywood or boards to protect your lawn.
4. Foundation prep. Wall cleaned, cracks parged, dimpled membrane and peel-and-stick waterproofing applied where the budget allows.
5. Pipe and stone. 4-inch perforated pipe pitched at least 1% (1/8 inch per foot), bedded in 19mm clear stone, wrapped in non-woven filter fabric.
6. Backfill and restoration. Native soil compacted in lifts, positive grade rebuilt away from the house at minimum 2% slope, sod or seed restored.

Typical Aurora French Drain Costs

Pricing depends on depth, length, access, and soil. As a working range for Aurora properties:

• Interior perimeter French drain: roughly $90 to $180 per linear foot for a standard basement.
• Exterior full-depth weeping tile replacement: roughly $350 to $650 per linear wall foot at 7-9 ft depth.
• Yard curtain drain: roughly $60 to $130 per linear foot at 24-36 inch depth.
• Sump pit and pump add-on: typically $1,800 to $3,500 installed.

Every Aurora quote is written, itemized, and locked — no day-of surprises. For a firm number on your address, call 416-317-3090.

Why Aurora Homeowners Choose OCM

We are a hands-on excavation crew, not a call centre. The same foreman who quotes your Aurora job runs the machine on dig day. We pull our own utility locates, we own our equipment, and we coordinate directly with LSRCA when a lot sits inside the regulated area. If your leak is a foundation waterproofing problem rather than a pure drainage one, we’ll tell you straight and route you to our Aurora foundation waterproofing service instead of selling you a drain you don’t need. See every Aurora-area service on our service areas page.

French Drain FAQ — Aurora

How long does a French drain installation take in Aurora?

A standard interior perimeter system in an Aurora basement takes 3 to 5 working days. A full exterior weeping tile replacement on one wall runs 4 to 7 days; a full-perimeter exterior dig can stretch to 10 to 14 days depending on lot access, weather, and whether interlock or decking has to come up first.

Do I need a permit for a French drain in Aurora?

Interior weeping tile and sump pit work generally require a Town of Aurora plumbing permit. Exterior drainage and yard French drains usually do not need a building permit, but any lot inside the LSRCA regulated area near the West Holland River or its tributaries needs LSRCA clearance before we dig. We handle the paperwork as part of every quote.

Will a French drain stop my basement from leaking?

Yes, when the leak is caused by hydrostatic pressure or failed weeping tile — which is the case in the large majority of Aurora basements we see. A French drain removes the water before it reaches the wall. If your leak is from a cracked wall above grade or a window well, drainage alone won’t fully solve it; we’ll tell you that on the site visit.

Can you install a French drain in winter in Aurora?

Interior French drains we install year-round — the basement stays at room temperature once the slab is open. Exterior digs are possible into early December but become slower and more expensive once the ground freezes past 12 inches. We usually recommend booking exterior work between April and late November.

What size and material do you use for the drain pipe?

Standard is 4-inch rigid perforated PVC, bedded and surrounded by 19mm washed clear stone and wrapped in non-woven geotextile filter fabric. We avoid corrugated “Big-O” on foundation perimeters because it crushes under backfill and clogs faster in clay soils.

Do you offer a warranty on French drain work in Aurora?

Yes. Every OCM French drain in Aurora comes with a written workmanship warranty covering the drain system and restoration. Specifics depend on scope and are spelled out on your quote — ask for the warranty page when we send the estimate.

Book Your Free Aurora French Drain Quote

If your Aurora basement is wet, your sump pump won’t quit, or water is pooling near the foundation, get it diagnosed before the next thaw. Call OCM Excavation & Construction at 416-317-3090 or book online through our free GTA quote form. We’ll be on site, with a written number, within days.

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