Lendus.

Self-Build Development Finance

Specialist stage-payment mortgages and development loans for individuals building their own home, whether managing the project directly or working with a main contractor.

200+ UK lenders
2-minute application
No credit check to apply
FCA-regulated brokers

Rates

5.5% – 9.0%

per annum

LTGDV

Up to 65%

LTC

Up to 85%

Timeline

12-24 months

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Finance structure

Arrears-Based Self-Build Mortgage

Rate
5.5% - 8.0%
LTC
Up to 80%

Best for: Experienced self-builders with strong cash reserves who can fund each stage before claiming the advance

Advance-Stage Self-Build Mortgage

Rate
6.5% - 9.0%
LTC
Up to 85%

Best for: First-time self-builders or those with limited working capital who need funds before each stage begins

Self-Build Bridging Loan

Rate
8.0% - 12.0%
LTC
Up to 80%

Best for: Projects needing speed or flexibility, or those that fall outside mainstream self-build mortgage criteria

Key considerations

Exit strategies

Remortgage to a standard residential mortgage on practical completion
Sale of the completed property (though CGT principal private residence relief may apply)

Eligibility

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Market context

Self-build and custom-build housing accounts for approximately 7–10% of new homes completed in England each year, well below the 30–50% seen in countries such as Germany and Austria. The government's Right to Build register has identified significant latent demand, with over 50,000 plots needed annually to meet registered applicants. Specialist lender appetite for self-build has increased substantially since 2022, with several high-street banks re-entering the market alongside dedicated self-build specialists. Average self-build costs nationally range from £1,500–£3,000 per square metre depending on specification and location.

Frequently asked questions

What is the difference between arrears and advance stage payments?
With arrears-stage finance, the lender releases funds after each construction stage is completed and inspected — meaning you fund each phase yourself and reclaim the cost. With advance-stage finance, the lender releases funds before each stage begins. Advance products typically carry higher rates but are essential for self-builders without substantial working capital.
Can I use a self-build loan to purchase the plot as well?
Yes — many self-build lenders will include the land purchase in the facility, typically advancing up to 75% of the plot value on day one. The remaining construction funds are then drawn in stages. If you already own the plot, that equity typically contributes toward the lender's LTC requirements.
Do I need planning permission before I can apply?
Full planning permission is required by most lenders before drawdown of construction funds. Plot purchase can sometimes be funded on outline permission, but the main facility will not draw until full consent is in place. It is advisable to begin your lender search as soon as your planning application is submitted so funding is ready when consent is granted.
What is the Help to Build equity loan and am I eligible?
Help to Build is a government scheme that provides an equity loan of 5–20% of build cost (up to 40% in London) to eligible self-builders, reducing the deposit and mortgage required. To be eligible, you must be building your primary residence, not own another home, and the property must not exceed £600,000 in estimated final value. The loan is interest-free for the first five years.
How do I reclaim VAT on my self-build?
HMRC's DIY Housebuilders Scheme allows self-builders to reclaim VAT paid on eligible building materials at the end of the project. You must keep all invoices and register with the scheme before works begin — HMRC does not accept retrospective claims made after completion. Professional fees and services (e.g. architect, QS) are not eligible, but most structural materials are. VAT savings on an average self-build can amount to £15,000–£40,000.

Related project types

Ground-Up Development New Build Residential

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