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November 2026 · By Fransisco Makoye · 4 min read

5 signs a plot may flood: check before you buy

A plot can look dry and perfect in the dry season and sit under water after the first heavy rains. Before you pay, walk the site and look for these five warning signs.

1. It sits low, close to a river, stream or drain

Water always finds the lowest ground. If the plot is lower than the road or the land around it, or close to a river, seasonal stream or drainage channel, it is more likely to flood when that water rises.

2. Water marks on nearby walls, fences and trees

Look at the bottom of walls, fences and tree trunks nearby. Brown lines, stains, peeling paint or dried mud at the same height are often left by past floodwater.

3. Neighbours have raised floors or barriers

Houses built high off the ground, small walls across doorways, sandbags or raised steps all suggest that people living nearby have had water come in before.

4. Soft, dark soil and water-loving plants

Clay soil that stays wet and sticky, cracks deeply when dry, or supports reeds and other plants that like wet ground can be a sign that water collects there.

5. Water has nowhere to go

Check where rainwater from the road and nearby land would flow. If it runs towards the plot, and drains are missing, blocked or full of rubbish, water may pool on the site.

What to do if you see these signs

• Visit the plot again during or just after heavy rain.
• Ask neighbours and the local mtaa leaders whether the area has flooded before.
• Get a professional flood risk report before you pay any money.

A sign on its own does not prove a plot will flood, and a plot with no signs is not guaranteed to be safe. A flood risk report combines elevation, drainage, soil and past flood data to give you a clear answer.