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JackCousinsMortgages · Finance · Protection · Consultancy
Mortgage services

Self-build mortgages

Self-build borrowing follows a project rather than a single finished-home purchase. I help you map the land, construction stages and available cash before lender discussions.

Match funding stages to the build budget

Stage payments can be released against value or agreed milestones, depending on the product. You may need to fund work before a stage payment arrives. A detailed budget, contingency allowance and practical accommodation plan help show how the build can continue between releases.

How I approach the case

We begin with what you want to achieve, your timescale and any part of the case that needs explaining. I review the evidence and suitable lender routes, then explain the available options and their costs. A recommendation follows the individual assessment; an initial conversation does not commit you to an application.

Where legal, tax or other specialist advice is needed, we identify it early so the finance fits the wider transaction. Tell me about any change in employment, borrowing, deposit or property details before proceeding.

What to prepare

  • Land ownership or purchase details
  • Planning and building plans
  • Cost schedule and contingency
  • Build team and stage timetable

You do not need every document before saying hello. Start with a short outline; detailed or sensitive records should follow through an agreed secure route.

Before you proceed

Cost overruns and delays can leave a funding gap. Planning consent, construction method and warranties must suit the lender.

Your questions, answered

What should I budget for beyond the deposit?

Build a separate allowance for legal work, a survey, any property tax, moving and immediate repairs. Then consider the monthly mortgage alongside bills, insurance and existing commitments. A budget with some room left over is more useful than a purchase price on its own.

How do we compare mortgage options?

We consider the amount borrowed, the term, repayment method, initial rate period, fees and flexibility together. Tell me if you expect to move, make overpayments or change your working pattern. A lower initial payment does not, by itself, establish that a mortgage is the right fit.

What can change between our first conversation and completion?

A different purchase price, property issue, change in income or new borrowing can affect the assessment. Keep me informed before making a commitment. A lender’s initial indication is followed by its full checks, valuation and offer conditions.

Larger loans & individual properties£1m+ borrowing, substantial homes & landOpen the group to explore the loan, property and project pages relevant to your plans.8 routes

Further reading: MoneyHelper: mortgages and homebuying. Content reviewed 9 September 2026. General information; availability depends on the individual case.

Your next step

Let’s talk about your plans.

Start with self-build mortgages. Tell me what you want to achieve and when; we can work out what needs a closer look.

A useful starting point: land ownership or purchase details; planning and building plans; cost schedule and contingency.

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