Buying a house on a slope in Hastings: retaining walls and ground movement

6 November 2026 · Blog · Hastings

Hastings is a town of hills. Whole streets in the Old Town, Ore, West Hill and St Leonards are cut into the slopes, with houses sitting above or below their neighbours and gardens held up by retaining walls. It’s a big part of the town’s character, and it’s also why so many surveys here come back with “refer to a structural engineer”.

Why the ground matters
Hastings is built on the Hastings Beds: layers of sandstone separated by clays, including the Wadhurst Clay. The sandstone is generally good to build on. The clays are softer, they shrink and swell as they dry and wet, and where they come to the surface on a slope the ground can creep downhill over many years. Water makes it worse, so leaking drains, blocked land drains and burst pipes are often part of the story.

What we look for when you’re buying
• The pattern of cracking: cracks that get wider towards one end of the house, or that run diagonally across several walls, point to movement in the ground rather than a local defect.
• Tilting: doors and windows that have been trimmed, floors that slope downhill, and walls that lean out of plumb.
• The garden: steps, paths and walls that have cracked or opened up, and trees leaning downhill.
• Drainage: damp patches, soggy ground and signs of leaking drains near the house.
• Whether it’s still moving: fresh, clean crack edges and recent repairs that have cracked again suggest ongoing movement. Old, dirty, painted-over cracks usually don’t.

Retaining walls
Many of the town’s retaining walls are over a century old, built of stone or brick with no drainage behind them. Most are fine. The warning signs are bulging, leaning, open joints, cracks and water seeping through the face. A failing retaining wall can be expensive, so it’s worth knowing its condition, and who owns it, before you buy.

What happens next
Most of the time the answer is reassuring: the movement is old, the house has settled and nothing needs doing. Sometimes we recommend monitoring cracks over a few months, repairing a drain or rebuilding part of a wall. Occasionally, where there are signs of active slope movement, we recommend a specialist ground investigation before you commit.

Common questions

Will my insurer or lender be worried about a slope?
Not usually, unless there’s evidence of ongoing movement or a past subsidence or landslip claim. Our report gives them a clear, professional view to work from.

Who is responsible for a retaining wall?
Usually the owner of the land it holds up, but not always. Your solicitor can check the deeds and ask the seller for anything they know about the wall.

Can I extend a house on a slope?
Usually, yes, with foundations and retaining walls designed for the slope. We do this regularly in Hastings.

Do you cover the whole of Hastings?
Yes, including St Leonards, Ore, Hollington, Silverhill, Fairlight and Battle, and Bexhill to the west.

Book a structural survey in Hastings →
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More on Hastings
• Regency and Victorian houses in St Leonards: what a structural survey checks
• Timber-framed and Georgian houses in Hastings Old Town
Structural engineers in Hastings →