Work out why the ground is uneven
Uneven ground always has a cause, and levelling the surface without fixing that cause means the dips come straight back.
Settlement is the usual culprit, particularly over a trench that was backfilled loosely or on a spot where an old shed or path once stood.
Rotting tree roots and old stumps leave hollows as the wood breaks down, while moles, worms and heavy clay all shift the surface over time.
If a tree is behind the problem, our tree removal service can take it out properly before you start levelling.
A corner that stays boggy may have drainage issues that no amount of topsoil will solve, and those are worth sorting first.
Walk the garden after heavy rain and note where the water collects, because that tells you where the real hole in the ground is.
Tools and materials for garden levelling
A small garden doesn’t need much, since a garden rake, a spade, a wheelbarrow and a long straight board or spirit level will cover most jobs.
A lute, which is a wide, flat levelling rake, makes spreading topdressing much quicker.
For lawn work, buy sharp sand and screened topsoil, and add a little compost if your soil is thin.
Order by volume, since one square metre dressed 1cm deep takes about 10 litres, so a 20 square metre lawn needs roughly 0.2 cubic metres.
Lawn levelling for a bumpy lawn
The fastest way to level your lawn depends on how deep the dips are.
A dip of up to about 2cm can be filled by topdressing, while a deeper hollow needs the turf lifted and the hole filled from underneath.
Topdressing small dips and bumps
Mow the grass short, rake out the thatch and aerate the surface with a fork so the dressing can reach the soil.
Mix sand, topsoil and a little compost, then shovel it into the low spots in layers of no more than 2cm.
Work the mix in with the back of a rake or a lute, and sprinkle a thin scattering over the rest of the lawn so the surface blends together.
Keep the layer thin enough for the grass to grow through it, because a thick one will smother the blades.
Water it in lightly and repeat after a few weeks if a dip is still showing, since top dressing works in several thin passes rather than one thick one.
Filling deeper hollows and cutting back high spots
For a deeper hole, slice an H shape through the turf with a spade and peel the sod back like a flap.
Fill the hollow with topsoil until it sits slightly proud, firm it down with your boot, then fold the turf over and press it flat.
A bump works in reverse, so you cut the turf away, scrape out the excess soil and relay the sod, watering well so the roots take hold again.
Once you level the lawn, setting the mower blade a notch higher for the next few cuts also stops it scalping the repaired patch.
Best time of year to level a lawn
Autumn is the best time to level an uneven lawn in Scotland, because the soil is moist enough for roots to knit back together and the grass is still growing.
If autumn has passed, spring is another viable seasons for lawn levelling too.
Frozen, waterlogged or baked-dry ground is best left alone.
Sow grass seeds into any thin patches, keep the moisture up and stay off the area for a couple of weeks.
Normal lawn care picks up again after that, and a light feed helps thin patches thicken into a healthy lawn.
Levelling bare ground for a patio, shed or raised beds
Bare ground calls for a different approach, because here you want it perfectly flat rather than just smooth.
Hammer a peg in at each corner, run a string line between them and check it with a line level so you know exactly how far the ground falls.
From there it’s a case of cutting and filling, so dig out the high side, shift that soil to the low side and tamp it down in layers of about 10cm, because loose fill that hasn’t been compacted is what makes a new patio sink.
A raised bed only needs the base level in both directions, so a spirit level on a straight board laid across the frame is enough before planting.
Slabs, brick paving and shed bases sit on a compacted sub-base of crushed stone laid over the levelled ground, and that goes down before installation starts.
Dealing with sloping ground
A gentle fall can be levelled by cutting and filling, but steep slopes are a different.
Moving that much soil by hand takes days, and it will slide back down unless a retaining wall in brick, block or timber holds the bank behind a level terrace.
Water building up behind a wall pushes it outwards, so every retaining wall needs drainage. It needs to be properly designed by experts.
Digging into a slope can also undermine the roots of nearby trees.
If a tree on the bank is leaning, diseased or dangerous, our team can remove it safely before any groundwork begins.
If you want to level a sloping garden as part of a bigger project, with steps, fencing and planting, our landscape design team can survey the plot and plan the levels before any digging starts.
Mistakes that undo the ground levelling work
Piling topsoil on too thick is the most common one, since anything over about 2cm smothers the grass and leaves bare patches that fill with weeds.
Levelling while the soil is waterlogged compacts it as well, so wait for a dry spell.
To prevent the dips returning, leave new fill slightly higher than the surrounding ground, because loose soil can drop by a few centimetres as it settles.
Heavy clay holds water and sets hard, so work plenty of sand and compost into it rather than topping it with plain soil.
Levelling ground FAQs
Is it better to level with sand or soil?
Neither works well alone, since pure sand dries out and leaves little for grass roots, while pure soil can cake on clay, so use a mix of both for topdressing and plain topsoil for deeper hollows under turf.
How long after levelling can I walk on the grass?
Give it a couple of weeks for topdressing and longer if you’ve over-seeded or relaid sod. Light foot traffic is fine once the grass has grown through and the roots have bedded back in.
How do you level ground without a spirit level?
Pegs and a string line pulled tight between them show you the fall and mark out a fence line, while a long straight board laid across the ground reveals any gaps. A clear hose filled with water works too, since water finds its own level at both ends.
How much does it cost to level a garden?
It depends on the size of the area, how steep the slope is, how much soil has to move and what’s going on top afterwards. We visit the plot, talk through the options and give you a clear quote after a free survey.
Do I need to level the ground before laying new turf?
Yes, because turf follows the surface underneath it, so every bump and hollow shows through once it’s down. Rake the soil smooth, firm it with a roller or by treading, and check it with a straight board before the first roll goes on.
Ready to get your garden level? Talk to the GGM Landscaping team today
We design, build and maintain outdoor spaces across Scotland, and our free survey looks at the levels, the drainage and the finished surface together, so you know what the job involves before anything is dug.
As an all-in-one landscaping service, we can even take care of dangerous trees in your garden through experienced tree removal.
Call us on 07946 322717 or request a free survey, and we’ll walk the plot with you, agree the levels and have your garden flat and ready for whatever comes next.