Self build mortgages including land

Yes. Many self build mortgages fund the purchase of the plot and the cost of building the home, releasing the first stage to buy the land and later stages as the build progresses. Lenders usually lend a share of the land price and a share of each build stage, so a deposit is needed for both.

A plot with full planning permission for a single home is the easiest to fund. Land without planning, or with outline planning only, is harder, and some buyers use short-term finance or cash for the plot and then move to a self build mortgage once detailed planning is granted.

The total the lender will advance depends on the land value, the build cost and the expected value of the finished home. A broker who arranges self build cases can compare lenders on how much of the plot they will fund.

Land already owned outright can often be used as the deposit for a self build mortgage. The lender values the plot, and that value counts as the borrower's stake, which can reduce or remove the cash needed for the first build stages. Land owned with a mortgage on it needs that loan repaid or moved to the new lender.

Gifted land, inherited land and land split from an existing garden can all be used, though each brings its own legal checks. A garden plot needs separate title, rights of access and planning permission before a lender will lend on it.

Lenders value the plot as it stands, with its planning consent, rather than at the price paid. How deposits and stage releases work across the whole project is set out in the guide to how self build mortgages work.

Lenders check that the plot has planning permission for the home being built, legal access from a public road, connections or a plan for water, drainage and power, and ground conditions that suit the design. A survey or site investigation may be needed where the ground is sloping, soft or near trees and watercourses.

The title must be clean, with no restrictive covenants that block the build. Rural plots can carry agricultural occupancy conditions or other planning limits that some lenders decline.

Stamp duty or the devolved land tax may be due on the land purchase, based on the price of the plot rather than the finished home (GOV.UK, accessed 20 Oct 2026).

Buying land before a self build mortgage is agreed carries risk, because the build funding may be smaller than expected or delayed by planning. Many buyers get a decision in principle on the whole project first, then buy the plot once the lender has confirmed it will fund the build on that land.

Where a plot must be bought quickly, for example at auction, short-term finance can bridge the gap until the self build mortgage is in place. Bridging costs more than a mortgage, so the exit needs to be planned from the start.

Councils keep self build and custom housebuilding registers, and joining one can help buyers hear about suitable plots in the area (GOV.UK Right to Build guidance, accessed 20 Oct 2026). The finance options for the build itself are covered on the self build finance page.