French drains, regrading, catch basins, and downspout management for Markham properties — water moved away from the foundation and off the lawn, permanently. Newer subdivision builds + heritage in Unionville.
Every soggy lawn, flooded corner, and damp basement wall is the same problem: water arriving faster than the ground can move it away. The fix is engineering, not landscaping — grade that sheds, french drains that intercept, catch basins that collect, and downspouts that discharge where water can actually go. In Markham, where the ground runs to generally manageable, drainage design is the foundation under every other outdoor investment.
Five factors decide whether a drainage fix in Markham holds:
"Drainage is the least glamorous thing we build in Markham and the one that protects everything else. Get the water right and the rest of the yard finally works."
— Reliable Hardscapes, on Markham drainageComplete drainage scope: french drains in washed gravel with filter fabric, regrading and swales that shed water by gravity, catch basins and channel drains at patios and driveways, downspout extensions and dry wells, and drainage corrections built into patio, wall, and landscape projects — because we build the hardscape too, the water plan and the stone plan are one plan.
Modern large-format pavers, monochromatic palettes, smart-home lighting integration. For drainage specifically, that means basins, grates, and channels chosen to disappear into the finished landscape.
Markham's soil character — generally manageable; older Unionville properties may have legacy issues — is the whole battlefield — how fast water percolates decides whether grade alone works or french drains and basins are needed. We assess this on-site before quoting, because drainage designed for the wrong soil fails on schedule.
Ontario's freeze-thaw makes drainage double-duty: standing water in the wrong place doesn't just kill grass, it freezes under hardscape and heaves it. Spring melt and summer downpours are the two design loads — a system built for both protects the lawn, the stone, and the foundation.
Full overview of every service we deliver in Markham — driveways, patios, pools, and more.
Grading, sod, and planting rebuilt over the corrected drainage.
Walls engineered with the drainage they depend on.
Fixing the hardscape that bad drainage heaved.
A sample of the kind of yard drainage work we deliver across Markham:
Newer subdivision builds + heritage in Unionville. That drives access planning, machine selection, and how we stage materials on site.
Most residential drainage needs no permit, but discharge rules — where water may legally go — are municipal, and work near property lines or the boulevard can require approval. Where approvals apply in Markham, timelines typically run 4–6 weeks; subdivision review in some areas. We confirm during the assessment.
Drainage is trenching work threaded through an existing yard — every Markham lot carries its own routing. We plan machine access, protect what stays, and restore lawn and beds over the completed runs.
Markham's residential character — polished contemporary, refined family homes, smart-home integrated — deserves drainage that disappears: basins in the right places, swales that read as lawn contour, and no visible plastic anywhere it matters.
A french drain in washed gravel with filter fabric, correctly sloped to a legal discharge, works for decades. The failures we replace all skipped one of those words. Done right, drainage is a one-time fix.
Most drainage corrections run 2–5 days. The best time is before hardscape and landscape investment — and the second-best time is now, because water problems only compound with each freeze-thaw season.
It depends entirely on the diagnosis — a downspout-and-regrade fix is a small job, a full french drain system across a wet backyard is real trenching work. We map where the water comes from and where it can legally go, then quote a fixed, itemized price. Honest answer first: sometimes the fix is cheaper than you fear.
A perforated pipe bedded in washed gravel, wrapped in filter fabric, sloped to carry subsurface water to a legal discharge point. You need one where regrading alone cannot win — soggy lawns over slow-draining soil, water arriving from a neighbouring slope, or chronic wet spots. Markham ground (generally manageable) is exactly the context they were invented for.
Spring melt delivers weeks of water into ground that is still partly frozen and drains slowly. If it recovers in days, that is normal; if it stays soft into summer or water reaches the foundation, the lot needs grading or drainage correction. We can tell you which in one site visit.
Yes — it is the quiet cause behind most of the heaved interlock we repair and a common contributor to damp basements. Water that sits under hardscape freezes and lifts it; water against the foundation finds its way in. Drainage is protection for every other investment in the property.
To a legal discharge point — a swale, a municipal drain where permitted, or a dry well on your own property. Discharge rules are municipal and we design to them; directing water at a neighbouring property is both illegal and the start of a feud we will not build for you.
Free on-site drainage assessment across Markham. We'll trace where the water comes from, tell you honestly how big the fix is, and quote it fixed.
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