Money & benefits
I Want to Extend My Home — How Can I Afford to Fund It?
The main ways to fund an extension are savings, remortgaging (or a further advance from your lender), a secured (second-charge) loan, an unsecured loan, or releasing equity. Remortgaging is usually the cheapest if you have equity and a good rate. Weigh the cost against the value it adds — and against simply moving, which can sometimes be better value than a big build.
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The funding options
Savings (cheapest, no interest); remortgage or further advance (borrow more against your home at mortgage rates); second-charge/secured loan (keeps your current deal but higher rate); unsecured loan (for smaller jobs); or equity release for older owners.
Will it add value?
Extensions often add value, but not always more than they cost — and over-developing for the street can cap returns. Check local ceiling prices before committing to a big spend.
Extend or move?
Sometimes moving to a larger home is better value than an expensive extension and the disruption. If you decide to sell, a fast cash sale can fund a chain-free move. See selling and moving mortgages.
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Written & reviewed by Lisa Hayes, Founder
Lisa Hayes is the founder of Ready Steady Sell and an independent UK home-selling expert with over a decade helping homeowners weigh cash house buyers, property investors and the wider fast house-sale industry — without pressure or hidden fees. Every guide is reviewed for accuracy under our editorial standards.
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Frequently asked questions
Straight answers, no sales talk
How can I fund a house extension?
Savings, remortgaging or a further advance, a secured (second-charge) loan, an unsecured loan, or equity release for older owners. Remortgaging is usually cheapest if you have equity.
Is it cheaper to extend or move house?
It depends — extensions add value but not always more than they cost, and over-developing caps returns. Sometimes moving to a larger home is better value than a big build.