How to Finance a Loft Conversion or House Extension in London
- LCCL Construction

- 6 days ago
- 3 min read
A loft conversion or house extension is a significant investment, typically costing £30,000 to £150,000 in London. Understanding your financing options and choosing the right payment approach is essential for a stress-free project. This guide covers the main ways to fund your construction project, plus how LCCL Construction structures payments to make the process manageable.

Finance a Loft Conversion or House Extension Savings and Cash
To finance a loft Conversion or house extension using savings is the most straightforward and cheapest way to finance a construction project as you avoid interest charges entirely. Even if you cannot fund the entire project from savings, using savings for the deposit and initial stages reduces the amount you need to borrow. LCCL Construction's stage payment system means you do not need to pay the full amount upfront. Payments are spread across project milestones, so you can manage cash flow by combining savings with other funding sources as the project progresses.
Remortgaging
Remortgaging is one of the most popular ways to fund a loft conversion or house extension. You can release equity from your property by switching to a new mortgage deal at a higher loan amount. Mortgage interest rates are typically the lowest available borrowing rates, making this a cost-effective option. The additional borrowing is secured against your property, which means lower rates but also means your home is at risk if you cannot keep up payments. Since a loft conversion or extension adds value to your property, the increased mortgage can be offset by the higher property value. Speak to a mortgage broker to compare remortgage options before committing.
Home Improvement Loans and Personal Loans
Unsecured personal loans are available from most banks and can fund construction projects up to £25,000 to £50,000 depending on the lender and your credit history. Interest rates are higher than mortgage rates but the loan is not secured against your property. Home improvement loans are specifically designed for renovation and construction projects and are available from specialist lenders. Some lenders offer longer repayment terms of 10 to 15 years for home improvement loans, keeping monthly payments manageable. Always compare rates from multiple lenders before choosing.
LCCL Construction's Payment Structure
LCCL Construction structures payments to make the process manageable for our clients. Once you sign the contract, a deposit is required to initiate the project. You then enter our stage payment schedule where each payment is tied to a specific project milestone. This means you only pay for work as the stages invoices are issued to you, giving you visibility and control over your spending throughout the project. You have a 14-working-day cooling-off period from signing during which you can receive a full refund of your deposit, subject to deductions for any work already carried out. This transparent approach ensures you are never paying large sums for work that has not been done.
Get a Free Quote to Plan Your Budget
The first step in planning your finances is knowing exactly how much your project will cost. LCCL Construction provides detailed fixed-price quotes with no hidden costs, so you can plan your funding with confidence. Use our instant quote calculator at lcclconstruction.co.uk/instant-quote for an immediate estimate, or book a free consultation for a detailed quote. Call 020 8037 7332 or email info@lcclconstruction.co.uk.





