Selling Part of Your Garden for Development

Key points

Before selling part of a garden, check your title, boundaries, access and any restrictive covenants.
If you have a mortgage, your lender will normally need to agree to release the plot from its charge.
Councils judge garden plots on access, privacy, daylight, outdoor space, parking and the character of the street.
Private Residence Relief can cover garden land within the permitted area if you sell it while the house is still your home, but not if you sell the house first.
Legal and tax rules are detailed, so speak to a solicitor and an accountant before you agree terms.

Can you sell part of your garden for development?

Yes, in many cases. You can sell part of a garden as a building plot, but it needs safe access, enough space for a home without harming neighbours, a clear title and, if you have a mortgage, your lender's agreement. The council decides planning permission, and any tax depends on how and when you sell.

Large rear gardens, corner plots and gardens next to a side road are often considered. Selling a plot changes your own home too, so it is worth thinking it through. This guide covers the practical, planning and tax points. For the kinds of site we look at, see garden land and backland.

What should you check on your title?

Boundaries and ownership: make sure you own the whole area, including any drive the new home would use. Title plans for England and Wales are available from HM Land Registry.
Restrictive covenants: some older titles limit building to one house, or require someone else's consent before building. In Scotland, similar restrictions are known as real burdens.
Rights and services: pipes, drains or cables crossing the plot, and anyone else's right to use your drive.

Covenants can sometimes be released by agreement or covered by indemnity insurance. A tribunal can also be asked to discharge or modify some covenants: the Upper Tribunal (Lands Chamber) in England and Wales, and the Lands Tribunal in Scotland and in Northern Ireland. Your solicitor will explain which route, if any, fits.

How will the new home be reached?

Access is often the deciding factor. The highway authority will look at the width of the drive, visibility where it meets the road, and whether vehicles can turn. If the new home shares your drive, you will need to grant a right of way and agree who maintains it. If a strip of land you do not own sits between the plot and the road, read our guide to ransom strips and access.

Services matter too. The new home will need water, foul and surface water drainage, electricity and usually broadband. If the connections have to cross the garden you keep, the sale will need to grant rights for those pipes and cables, and agree who repairs them.

Do you need your mortgage lender's consent?

If your home is mortgaged, the lender's charge almost always covers the whole garden. The lender will normally need to agree to release the plot, and it may ask for some of the sale proceeds to reduce the loan. It will want to be sure your home is still adequate security once the garden is smaller, so it helps to contact the lender early.

The legal process differs by nation. In England and Wales, the sale is a transfer of part of your registered title. In Scotland, a disposition of part is registered with Registers of Scotland. In Northern Ireland, the transfer is registered with Land & Property Services.

Will the council grant planning permission?

Councils usually focus on overlooking and privacy, daylight and sunlight, enough outdoor space for both homes, parking and safe access, and the character of the street, including trees and drainage. Many councils offer pre-application advice, which can flag likely objections before a full application is made.

England: the revised National Planning Policy Framework gives substantial weight to adding homes within residential gardens where they fit the street scene and keep acceptable daylight, privacy and outdoor space, with limits on how much of a plot is built on unless there is no harm to local character. Garden land in built-up areas does not count as previously developed land. Since 6 August 2026, many sites of 0.2 hectares or less are exempt from biodiversity net gain.

Wales: decisions follow Planning Policy Wales and the Local Development Plan, and a new home may need SuDS Approving Body approval for its drainage.

Scotland and Northern Ireland: decisions follow NPF4 or the Strategic Planning Policy Statement and the council's local development plan, with similar attention to amenity and character.

How is the sale of garden land taxed?

HMRC's Private Residence Relief helpsheet (HS283) sets out the main rules:

relief can apply to land you occupy as your garden or grounds, up to the permitted area, at the time you sell it;
the permitted area is half a hectare including the house, or more if a larger area is needed for the reasonable enjoyment of the home;
relief is lost if you sell the garden after you have sold the house;
land that has been developed, or fenced or divided off for development, before the sale may not qualify.

If you build and sell a new home yourself, the profit may be taxed differently, possibly as trading income. UK residents who sell UK residential property with Capital Gains Tax to pay normally have to report and pay within 60 days of completion. Speak to an accountant before you agree a sale, and see our guide to tax when selling land.

What will a buyer want to know about the plot?

Having the answers ready makes a sale smoother and helps a buyer price the plot with fewer allowances for risk:

a plan showing the exact boundary of the land to be sold and the garden you keep;
how the plot will be reached, and any rights you will grant or keep over the drive;
where water, drainage and power connections could run;
any trees on or next to the plot, and whether any are protected;
any previous planning applications on your property or nearby gardens;
whether your lender has agreed in principle to release the land.

Should you sell the plot with or without planning permission?

Selling with permission usually achieves a higher price because the buyer takes on less risk, but you pay for the application and wait for the decision. Selling without permission is simpler to agree, though the price reflects the uncertainty. A middle route is to sell now with an overage clause, so you share in any later uplift if permission is granted. If you apply yourself, the permission normally runs with the land, so a buyer benefits from it, but you carry the cost if it is refused.

How does Land to Homes look at garden plots?

We look at access, neighbouring homes, local planning policy and the title before saying whether a plot could work. Our free, no-obligation site appraisal is a simple first step. Where a site suits us, we can buy it directly, with or without planning and with no onward chain, subject to survey, title and contract. Gaps between existing homes are covered on our infill plots page.

Frequently asked questions

Will selling part of my garden reduce the value of my house?

It can. A smaller garden, a new neighbour or a shared drive may affect what buyers will pay for your home, while the sale of the plot brings in money of its own. The balance depends on the house, the plot and the local market, so an independent valuer or estate agent can help you weigh the two before you commit.

Can my neighbours stop me selling part of my garden?

Neighbours cannot normally stop a sale, but they can comment on any planning application, and the council must consider relevant objections. If a neighbour has the benefit of a restrictive covenant over your land, they may be able to enforce it, or their agreement may be needed to release it. Your solicitor can check the title for rights like these.

Do I pay Capital Gains Tax on selling part of my garden?

Often not, if the land is part of your garden within the permitted area when you sell it and the house is still your main home. Relief can be lost if you sell the house first, if the plot goes beyond the permitted area, or if it was divided off for development beforehand. HMRC's HS283 helpsheet explains the rules, and an accountant can apply them to you.

How big does a garden plot need to be for a new house?

There is no single minimum. Councils look at whether the plot can fit a home with safe access, parking, enough outdoor space and acceptable privacy and daylight for everyone, in keeping with the street. Local design guides often set expectations. In England, the NPPF also limits how much of a garden can be built on unless there is no harm to local character.

Sources

This guide is general information about how land and housing processes usually work. It is not legal, tax or financial advice. Rules differ between England, Wales, Scotland and Northern Ireland and change over time, so take advice from a solicitor, accountant or land agent on your own situation.

Selling part of your garden: what you need to know