Backyard regrading for drainage typically costs $1,500 to $5,000 for a standard residential lot, depending on the area involved and how much soil needs to move. The goal is a gentle, consistent slope — typically a 2% grade, or about one inch of drop per four feet — carrying water away from the foundation toward a safe discharge point rather than letting it pool near the house or in low spots across the yard. Treat every figure on this page as a starting point rather than a quote: how far off-grade the yard currently is affects the real cost more than lot size alone.
The process usually follows a set sequence: strip and stockpile the existing sod and topsoil separately, since that material gets reused once the subgrade is correct, regrade the subgrade itself to establish the proper slope, then replace the topsoil and reseed or sod the finished surface. Skid steers are the standard equipment for this scale of work — large enough to move soil efficiently, small enough to work in a residential backyard without tearing up everything around the work area.
What actually drives the price
How far off the correct grade the yard currently sits is the biggest factor, more than total area. A yard that's mostly right but has one persistent low spot near the foundation is a far smaller project than a yard with no consistent slope at all, where water genuinely doesn't know which way to go. A simple test — watching where water actually pools during or after rain — tells you more about the real scope than eyeballing the yard on a dry day.
What's already in the yard matters too. An open, empty backyard regrades quickly. A yard with mature trees, an existing deck or patio, established garden beds, or in-ground irrigation means working around all of it, protecting root zones and hardscape, and sometimes accepting a less-than-ideal grade in spots where you're not willing to remove what's already there.
Where the water is supposed to go once it leaves your yard is worth confirming before work starts. Regrading to push water toward a property line without anywhere for it to go often just moves the problem onto a neighbour's property — a real source of disputes, and in many municipalities also a bylaw issue. A proper design directs water to a municipal storm system, a natural drainage feature, or a swale designed to hold and slowly release it.
Why this is often the cheapest real fix
A proper grade is frequently the most cost-effective fix for a chronic wet basement or standing water problem, and it's worth assessing before investing in more expensive solutions like a full perimeter drainage system or sump pump upgrades. If water is actively flowing toward the foundation because the ground around it is flat or sloped the wrong way, no amount of interior waterproofing fully solves a problem that's being caused outside.
A short checklist before you book
Observe and note where water actually pools during or after a rain event, rather than guessing. Confirm where regraded water will be directed and that it has somewhere legitimate to go. Flag any trees, hardscape, or irrigation in the work area that need to be protected or worked around. Decide whether you want sod or seed for the finished surface. Confirm the quote includes topsoil replacement and final seeding or sodding, not just the regrading itself.
Costs vary by site conditions. Use the ranges here to sanity-check what you're quoted, then get a direct price for your own property.
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