Selling part of your garden for a building plot
You can sell part of your garden as a building plot if a new home can get safe access and fit without unacceptable harm to neighbours or the area's character. Your mortgage lender must agree to release the land, and the sale usually depends on planning permission.
Updated October 2026. General information, not legal or tax advice.
Is my garden big enough?
There's no minimum size. What matters is whether a house, parking and a reasonable garden can fit without overlooking or overshadowing neighbours, and whether the plot matches the pattern of the street.
How will access work?
A rear lane or side road is ideal. Access past your house needs to be wide enough for cars and, often, for refuse and emergency vehicles. Visibility onto the road matters too.
What about my mortgage?
If your home is mortgaged, your lender has a charge over the whole title, including the garden. They'll need to agree to release the plot, usually after checking the remaining property still covers the loan.
Will it affect the value of my house?
It might. A smaller garden or a new neighbour close by can reduce your home's value. Weigh that against the plot price, and ask a local estate agent for a view.
What do councils think about garden development?
Councils judge garden plots against their policies on character, design and neighbours' privacy. In England, the August 2026 revision of national policy added support for some development on residential curtilage land, within limits on footprint and open space. Welsh councils judge garden plots against their Local Development Plan policies.
This guide is general information for landowners in England and Wales. It isn't legal, tax or financial advice. Take advice from a solicitor, surveyor or accountant about your own situation.