Step-by-step fix
Step 1: Confirm grading is the problem
- Walk the foundation after rain or during hose runoff and look for water pooling near the wall, muddy splash marks, or soil that clearly slopes back toward the house.
- Check whether downspouts are dumping water right beside the foundation. If they are, fix that too so the new grade is not overwhelmed.
- Look for low spots along the wall where mulch or soil has settled and created a trough.
- Measure from the soil line to the bottom edge of siding, trim, weep screed, or other wall materials so you know how much room you have to build the grade safely.
If it works: You have identified one or more sections where water is being directed toward the foundation and regrading is a sensible next step.
If it doesn’t: If the ground already slopes away well, focus on gutters, downspout extensions, window wells, or cracks instead of changing the grade.
Stop if:- You see major foundation cracks, bowing walls, sinking slabs, or obvious structural movement.
- The area stays wet from a plumbing leak, sump discharge, or irrigation line rather than rain runoff.
- You cannot maintain safe clearance between soil and siding or other moisture-sensitive wall materials.
Step 2: Clear the area and plan the new slope
- Pull back mulch, edging, loose stone, and any decorative material from the section you need to reshape.
- Remove weeds, roots near the surface, and loose debris so the new soil can bond to the existing ground.
- Mark the area to be regraded, usually starting at the foundation and extending outward far enough to create a gentle continuous slope.
- Plan to keep the finished soil below siding, trim, vents, and other openings so water and pests are not invited into the wall.
If it works: The work area is exposed, clean, and ready for soil to be cut, added, and shaped.
If it doesn’t: If landscaping blocks access, temporarily move it now rather than trying to grade around it.
Stop if:- You uncover hidden rot, insect damage, open gaps, or buried utility markings you do not understand.
Step 3: Cut high spots and add fill where the grade is low
- Use the shovel to shave down any ridge that traps water against the house or creates a dip farther out.
- Bring in clean fill dirt to build low areas near the foundation first, then feather it outward so the slope stays gradual.
- Use fill dirt for the main buildup if you need to raise the grade noticeably. A thin top layer of topsoil can go over it if needed for appearance or grass.
- Do not rely on mulch alone to create slope. It washes, settles, and does not control water well by itself.
If it works: The ground is roughly shaped so the highest point is near the house and the soil falls away from the foundation.
If it doesn’t: If the area still has a bowl shape, keep cutting the outer high edge or add more compactable fill near the wall until runoff has a clear path away.
Stop if:- You need to pile soil so high that it would cover siding, vents, or other wall components.
- The amount of settlement or washout suggests a larger drainage or erosion problem than simple regrading will solve.
Step 4: Rake and compact the new grade
- Rake the soil smooth from the house outward so there are no pockets where water can sit.
- Compact the soil in thin layers with a hand tamper, especially close to the foundation where settling causes repeat problems.
- Add a little more soil and re-rake as needed after tamping, because compacted fill usually drops slightly.
- Keep the finished surface even and firm enough that a hard rain will not immediately carve channels into it.
If it works: The new grade is smooth, firm, and shaped to shed water away instead of holding it.
If it doesn’t: If footprints sink deeply or the surface feels fluffy, tamp again and add soil in thinner lifts rather than one thick loose layer.
Stop if:- The soil stays soupy or unstable because water is constantly entering the area from another source.
Step 5: Restore the surface without blocking drainage
- Reinstall mulch, stone, or ground cover lightly so it protects the soil without creating a dam against the house.
- Keep mulch thinner near the wall and avoid piling it up into a berm that traps runoff.
- If you removed edging, reset it so it does not hold water along the foundation line.
- Reconnect or extend downspouts if needed so roof water discharges well away from the newly graded area.
If it works: The area looks finished and the surface treatment still allows water to move away from the house.
If it doesn’t: If decorative materials keep sliding back toward the wall, reduce the thickness and recheck the slope underneath.
Stop if:- A downspout, hardscape edge, or planter design forces water back toward the foundation no matter how you shape the soil.
Step 6: Test the grade and watch it through real rain
- Run water from a hose gently over the area or wait for the next steady rain and watch where the runoff goes.
- Check that water moves away from the foundation without pooling at the wall or cutting channels into the new soil.
- Inspect the area again a day later for settlement. Touch up any low spots before they become a repeat leak path.
- Look inside the basement or crawlspace after rain if that was the original concern, and confirm moisture signs are improving.
If it works: Water drains away from the house, the soil holds its shape, and the problem area stays drier after real use.
If it doesn’t: If water still returns to the wall, extend the graded area farther out, correct downspout discharge, or move to a larger drainage solution such as a swale or drain.
Stop if:- Water still enters the basement or crawlspace even though the surface grade now sheds water away properly.
- You see repeated erosion, heavy runoff from neighboring property, or signs that a broader site drainage plan is needed.
Supplies you may need
Repair Riot may earn a commission from qualifying purchases, at no extra cost to you.
FAQ
What kind of soil should I use for regrading?
Use clean fill dirt for bulk buildup because it compacts better than loose organic soil. If you want a nicer finish for grass, add a thin top layer of topsoil after the base grade is set.
Can I just add mulch against the house to build slope?
No. Mulch is not a stable grading material. It settles, floats, and washes away. Shape the grade with soil first, then add mulch lightly on top if you want it.
How far should the slope extend away from the foundation?
Far enough that water clearly leaves the wall area instead of turning back. The exact distance depends on the yard, but the key is a continuous outward slope with no low pocket near the house.
Should I regrade if my downspouts already overflow near the foundation?
Yes, but fix the downspout discharge too. Regrading helps surface water move away, but a downspout dumping beside the house can overwhelm even a decent slope.
When should I call a pro instead of doing this myself?
Call for help if you see structural cracking, major settlement, severe erosion, standing water that never dries, or a drainage pattern that involves neighboring property, retaining walls, or large hardscape areas.