How Much Does a Home Extension Cost in Preston & Lancashire in 2026?
**All prices mentioned are intended for guideline purposes and your actual quote may be more or less that what is stated in this blog post.**
All prices mentioned are intended for guideline purposes and your actual quote may be more or less that what is stated in this blog post.
If you’re considering a home extension in Preston or the wider Lancashire area, one of the first questions you’ll ask is: how much will it cost in 2026?
The honest answer is that prices vary significantly depending on the size, type, specification, and condition of your property. However, we can give you clear, up-to-date guidelines based on current 2026 market rates in the Northwest. We have completed many high quality extension projects across the Northwest, seem them on our cases studies page.
At Price & Price Building Ltd, we’ve been delivering high-quality extensions across Preston and Lancashire for over 20 years. We believe in transparent pricing, which is why we provide free, no-obligation quotes tailored to your specific project.
What Influences Extension Costs in Preston & Lancashire in 2026?
Several factors affect the final price:
- Size and type of extension (single storey vs double storey)
- Specification (standard, good quality, or premium finishes)
- Site conditions (access, ground levels, drainage, or tree roots)
- Current material and labour costs in the Northwest
- 2026 Building Regulations requirements, particularly around energy efficiency and insulation
- Whether planning permission or building regulations approval is needed
Prices in Lancashire and Preston are generally more affordable than in London and the Southeast, typically 20–40% lower.
Average Extension Costs in Preston & Lancashire (2026)
Here are realistic 2026 cost ranges for the Northwest:
|
Extension Type |
Typical Size |
Cost per m² (Good Quality) |
Typical Total Cost (Construction Only) |
Notes |
|
Single Storey |
20–30m² |
£2,000 – £2,800 |
£45,000 – £80,000 |
Most popular choice in Preston & Lancashire |
|
Single Storey (Larger) |
35–50m² |
£1,950 – £2,600 |
£75,000 – £120,000 |
Good value for open-plan living |
|
Double / Multi-Storey |
40–60m² total |
£1,800 – £2,500 |
£90,000 – £160,000 |
Better value per m² as foundations & roof are shared |
|
Kitchen Extension |
25–40m² |
£2,200 – £3,000+ |
£60,000 – £110,000+ |
Includes higher-spec kitchen fit-out |
Important: These figures are for the construction cost only (materials + labour). They do not include VAT, professional fees, or planning costs.
Additional Costs to Budget For
|
Item |
Typical Cost (2026) |
Notes |
|
Planning Application Fee |
£548 |
Standard householder application fee in England (from April 2026) |
|
Architect / Design Fees |
£1,500 – £4,000 |
Depends on complexity |
|
Structural Engineer |
£600 – £1,500 |
Required for most extensions |
|
Building Regulations |
£800 – £1,800 |
Separate from planning |
|
VAT |
20% |
Applies to most extension work |
|
Kitchen Fit-Out |
£15,000 – £35,000+ |
Added to kitchen/open-plan extensions |
|
Contingency |
10–15% of build cost |
Recommended for unexpected issues |
Recent Home Extensions Built By The Price & Price Team
2026 Specific Considerations for Preston & Lancashire Homeowners
- Energy Efficiency Requirements: New Building Regulations place greater emphasis on insulation, airtightness, and low-carbon heating. This can add 5–10% to costs but reduces long-term running expenses.
- Material & Labour Prices: While some material prices have stabilised, skilled trades (bricklayers, carpenters, and electricians) remain in demand across Preston and Lancashire.
- Permitted Development: Many single-storey rear extensions in Preston, Fulwood, Broughton, and Penwortham can proceed without full planning permission, saving both time and the £548 fee.
Why Choose Price & Price Builders for Your Extension in Preston & Lancashire?
We take a different approach to many builders:
- We offer a full design and build service — you deal with one trusted team from start to finish.
- We provide free, detailed consultations and transparent quotes with no hidden costs.
- As Federation of Master Builders members, we work to the highest standards.
- All our work is fully insured, and we use real photos of our completed projects (no stock images or AI renders).
- We have extensive local knowledge of planning requirements across Preston City Council, South Ribble, and West Lancashire.
Whether you’re in Fulwood, Broughton, Penwortham, Standish, Ormskirk, or Eccleston, we understand the local property styles and planning nuances.
Frequently Asked Questions
How much does a single storey extension cost in Preston in 2026?
Most single-storey extensions in the Preston area cost between £2,000 – £2,800 per m² for good quality work. A typical 25m² extension usually falls between £55,000 – £75,000 including finishes.
Do I need planning permission for an extension in Lancashire?
Many single-storey rear extensions qualify under Permitted Development rights. We assess your property and advise whether you need planning permission or can proceed with a Lawful Development Certificate.
Are your quotes fixed price?
We provide detailed, fixed-price quotes wherever possible after a full site survey and design stage.
How long does it take to get a quote?
We usually visit within a few days and aim to provide a detailed quote within a week.
Ready to find out exactly how much your extension will cost?
Contact Price & Price Building Ltd today for a free, no-obligation consultation and a transparent quote for your home in Preston or Lancashire.
Email: shaun@priceandprice.co.uk We’re happy to discuss your ideas and provide realistic costs based on your specific property and requirements.
All costs mentioned are guideline figures for 2026 based on current Northwest market rates. Every project is unique, so we always recommend a site visit for an accurate quote.