top of page
LCCL Construction – design and build company, London N3
Planning checkBook a callInstant estimateBook

Loft conversions, house extensions, renovations, basements and new builds across London and Hertfordshire.

Services

Loft conversions, house extensions, renovations, basements and new builds across London and Hertfordshire.

Services

Loft conversions, house extensions, renovations, basements and new builds across London and Hertfordshire.

Services

Loft conversions, house extensions, renovations, basements and new builds across London and Hertfordshire.

Services

Call 020 8037 7332 or get an instant estimate online.

How to Finance a Loft Conversion or House Extension in London

Writer: LCCL Construction
LCCL Construction
Apr 23
3 min read

Updated: Oct 16

A loft conversion or house extension is a significant investment, typically costing £36,000 – £180,000 inc. VAT (£30,000 – £150,000 + VAT) 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.


Modern brick house with large windows, open living area visible. Patio with two wicker chairs and green lawn. Evening lighting creates a warm ambiance.
How to Finance a Loft Conversion or House Extension in London

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 lowest-cost 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 £30,000 – £60,000 inc. VAT (£25,000 – £50,000 + VAT) 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.

Aleksandar Madari (Anderson), founder of LCCL Construction

ABOUT THE AUTHOR

Anderson — founder, LCCL Construction

Anderson founded LCCL Construction in Finchley N3 in 2004 and still leads the design of every project; our own team then builds it under one contract, from the first survey to the completion certificate. The company has won two LABC Building Excellence Awards: Best Residential Extension in London 2024 (Bohun Grove, East Barnet) and London Regional Winner 2026, Best Conversion or Alteration to an Existing Home (Weech Road, Hampstead). LCCL is an NFB member and an LABC Registered Partner.

Every guide on this site is written from real LCCL projects. If you are planning your own, call 020 8037 7332 or book a free 30-minute consultation call.

What clients say

Verified reviews, quoted exactly

average rating is 5 out of 5
“We are very happy with the services from Lccl, Alex has done a great job on design and construction. We have used Lccl in the past for our rear house extension and have come back to instruct Lccl for our loft conversion too to our house in North London. As…”

Mia M · Google Reviews

average rating is 5 out of 5
“Everyone at LCCL Construction was skilled, trustworthy and worked to the highest standard. I am delighted with our loft conversion, it is exactly what we wanted and I highly recommend the company - they have transformed the quality of my home. Overall it…”

KashImaging · Google Reviews

average rating is 5 out of 5
“We are very pleased to have used Lccl Construction to do full house renovation and loft conversion to our edwardian terraced house. Project involved total strip out of interiors and remodelling repositioning the interior walls, electrical and plumbing…”

neil smith · Trustpilot

Keep reading

More guides on this topic

Aleksandar Madari (Anderson), founder of LCCL Construction

Start with a figure, then a conversation.

Get an instant estimate for your postcode, or book a free 30-minute call with our team. Call us on 020 8037 7332, Monday to Saturday 08:00–18:00.

One team, one contract, one point of contact — from first sketch to handover.

bottom of page