Calgary GradingYard grading & drainage

Yard grading in Calgary

Yard grading and regrading that gets water out of your yard

If your lawn holds water or ground falls toward the house, first identify the source and outlet. A contractor can assess whether regrading will give surface water a suitable route out.

Calgary Grading is a referral website. This page explains work an independent contractor may assess; availability and scope must be confirmed.

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Common reasons people call

  • Water still standing a day after rain
  • Low spots and soggy, mossy lawn
  • Ground falling back toward the house
  • Meltwater running the wrong way in spring
What it covers
Reshaping the ground around a home: cutting high ground, filling and compacting low ground, and finishing with a continuous fall.
Who it is for
Homeowners whose yard holds water, whose lawn stays soggy, or whose ground falls toward the house.
What decides the cost
The area, soil moved or imported, machine access, what is on the ground, and where the water can go.

The service

What yard grading is, and what it fixes

What yard grading is

Yard grading is reshaping the soil surface of a property so water runs away from the house and off the lot instead of collecting on it. It normally means cutting down high ground, filling and compacting low ground, and finishing with a continuous fall toward a swale, a low point or the street.

Most people arrive at this page describing a symptom rather than a service. The lawn is spongy a week after rain. There is a green stripe of moss along one fence line. Meltwater runs toward the back door every March. Those symptoms can involve several contributors. The source, soil, route and outlet need to be checked before choosing earthwork.

Regrading fixes that by rebuilding the surface. It is not a drainage product, a pipe or a pump. It is earthwork, and when the cause really is the shape of the ground, it is the most durable fix available because there is nothing to clog, fail or need power.

123
  1. Old low spot filled and compacted
  2. High ground that blocked the water cut down
  3. Continuous fall away from the house

Illustration, not a photograph of a specific job.

first ~2 m
Negative grade: water runs backThe ground falls toward the house, so rain and snowmelt collect against the foundation wall and soak into the backfill.
first ~2 m
Positive grade: water runs awayThe ground falls away from the house, carrying surface water toward a swale, a low point or the street instead of the wall.

Before you call anyone

How to tell whether your yard needs regrading

Record what you can observe from safe, dry ground; stop when access is slippery, flooded or uncertain.

Signs pointing to a grading problem

  • Water is still standing more than 24 hours after rain stops.
  • Puddles form against the foundation wall rather than out in the yard.
  • There is a visible trench or gap where soil has pulled away from the house.
  • Grass is thin, mossy or yellow in one consistent low area.
  • Visible runoff collects at the same accessible low spot during rainfall.
  • Meltwater in spring travels toward the house instead of away from it.

Signs pointing somewhere else

  • Water appears in the basement with no wet ground outside.
  • The wet area is directly under a downspout that discharges at the wall.
  • Seepage shows up along a single crack in the foundation wall.
  • The yard drains fine but a window well fills up.
  • Water appears during dry weather: irrigation, plumbing or groundwater may need investigation.
  • A neighbouring property has been raised or altered recently.

The right column matters as much as the left. Regrading a yard will not repair a cracked wall or a failed weeping tile, and no honest contractor should tell you otherwise. Our guide to telling grading problems from drainage problems works through how to separate the two. If the water is concentrated right against the house, foundation grading is the narrower job.

Ticked more than one box on the left?

Describe what the water is doing for a free preliminary review. Any recommended work needs an on-site contractor assessment.

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What a useful regrading proposal should explain

Ask for the current and proposed elevations, the water route beyond the work area and a suitable discharge destination. Positive grading beside the house is only one part of the route. A new patio, edging or fence can still create a downstream restriction.

Use the free slope calculator to interpret a safe measurement, and our backyard drainage resource to compare grading with swales, downspout changes and buried drains. No single system fits every property.

Before excavation, confirm utility planning, tree protection, access and restoration. Compare soil movement, material, compaction, sod or landscaping, maintenance and exclusions across written quotes. Area and access affect cost, but this referral website cannot estimate a project from a generic price range.

The City’s lot drainage guidance and applicable plan govern local questions. Do not send water onto neighbouring property or assume a mathematical slope result certifies compliance. For repeated water near the wall, see the foundation pooling guide.

How the work runs

What actually happens when a yard is regraded

  1. Step 1: Walk the yard and find the actual low point

    A contractor checks where water sits, where it comes from and the ground against the house. Measured elevations establish the existing fall and any feasible correction.

  2. Step 2: Agree the finished surface in writing

    Before anything moves, the quote sets out which areas are being regraded, whether soil is being cut or imported, where water will discharge, and the agreed finished surface.

  3. Step 3: Strip and protect

    Turf comes off the areas being raised. Anything staying is protected. Utility locates are in hand before a machine touches the ground.

  4. Step 4: Cut, fill and compact in lifts

    High ground is cut down, low ground is filled, and fill goes in in layers with compaction between them. Skipping this is the reason regraded yards sink.

  5. Step 5: Shape the fall and any swale

    The surface is worked to a continuous fall away from the house toward the discharge point, with a shallow swale cut where water needs a defined route.

  6. Step 6: Topsoil, rake and walk it through

    Topsoil goes back on, the surface is raked ready for sod or seed, and the contractor explains where water is meant to travel so you know what to watch after the next heavy rain.

What changes the price

What makes one yard grading job cost more than another

We do not publish prices, because a number quoted without seeing the ground is a guess. These are the variables that move it.

FactorWhy it matters
Area being regradedWhy it mattersThe single biggest driver. Correcting one corner beside a downspout is a different job from reshaping a whole back yard.
Soil volume moved or importedWhy it mattersCutting a high spot to fill a low one is cheaper than trucking in screened topsoil. Jobs that need imported material carry the material and haulage cost.
Machine accessWhy it mattersA gate a skid steer fits through changes everything. Narrow side yards, mature landscaping and fenced-in back yards can push work to hand tools or smaller machines, which takes longer.
What is already on the groundWhy it mattersSod, beds, edging, pavers, sheds and irrigation all have to be removed, protected or reinstated. Bare ground is the simplest starting point.
Where the water is going to goWhy it mattersIf there is a clear low point or a street to drain to, shaping the fall is straightforward. If there is nowhere obvious, the job grows to include a swale or another route.
Finish levelWhy it mattersLeaving a raked topsoil grade ready for someone else to sod costs less than supplying and laying sod as part of the same job.

When you compare quotes, compare these variables rather than the totals. Two numbers that look far apart usually describe two different jobs, most often because one includes imported topsoil or sod reinstatement and the other does not.

Local conditions

Why Calgary yards lose their grade

A yard that drained perfectly for twelve years and now holds water has usually not been hit by anything dramatic. It has been slowly flattened.

  • Freeze and thaw, over and over

    Chinook conditions push temperatures across the freezing point far more often through a Calgary winter than a steadier cold climate would. Each cycle lifts the top layer of soil and drops it again. The subtle fall a yard depends on is measured in tens of millimetres, so it does not take many seasons of that movement to erase it.

  • Clay holds what it is given

    Much of the Calgary area sits on clay-rich glacial till. Clay drains slowly, so water that would disappear into sandy soil sits on the surface instead. It also swells when wet and shrinks when dry, which means the ground moves seasonally and a low spot that stays wet stays a problem.

  • The worst day is a March thaw

    Snowmelt can arrive while ground is frozen or saturated, limiting infiltration and increasing surface runoff. Ice or snow piles may also obstruct a route. More on this in how freeze-thaw affects Calgary yards.

Related services

Where to go next

Yard grading overlaps with three other jobs. These explain where the boundaries are.

Common questions

Yard grading questions

What is the difference between yard grading, regrading and resloping?
In practice they describe the same work. Grading is the general term for shaping ground to a planned slope. Regrading and resloping both mean correcting a slope that already exists and is no longer working. Contractors and homeowners use the words interchangeably, so what matters is the scope being described, not the label on the quote.
Do I have to remove my lawn to regrade the yard?
Usually some of it, yes. Fill placed on top of existing grass sits on a soft, decomposing layer and settles unevenly, so the area being raised is normally stripped first. Areas that only need cutting down, or that are outside the work zone, can often be left alone. A quote should say exactly which areas are being stripped and what the surface will be at handover.
How much slope does a yard actually need?
A common approach is a steeper fall through the immediate foundation perimeter, then a gentler continuous fall across lawn and landscaped areas. A 2 percent slope is 20 mm per metre; a 5 percent slope is 50 mm per metre. On a lot with an approved lot grading plan, that plan governs rather than a rule of thumb.
Will regrading damage my sprinklers, fence or trees?
Irrigation lines and shallow utilities are the usual conflict, which is why locates and a walk-through happen before machines arrive. Mature trees are the harder constraint: adding soil over a root zone can smother roots, and cutting into it can sever them, so grading near established trees often has to be shallower or hand-worked. If your yard has trees you want to keep, say so early because it changes the approach.
How long will the new grade last?
Durability depends on soil suitability, compaction, drainage, restoration and future changes. Ask the contractor how settlement is addressed and what maintenance or follow-up the written scope includes. This website cannot guarantee a lifespan or warranty for independent contractor work.

Free Grading & Drainage Project Review

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Tell us what the water is doing and roughly where the property is. Add photos for a free preliminary review and discuss potential next steps.

Useful to include

  • Where water sits, and how long it stays there.
  • Whether it reaches the house or stays out in the yard.
  • How wide the gate or side yard access is.
  • Whether there is sod, irrigation or landscaping in the area.
  • Photos taken the day after rain, if you have them.

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