How Much Does a House Extension Cost in Sunderland in 2026?
House Extension Cost Sunderland
If you're considering a house extension in Sunderland, one of the first questions you'll ask is, "How much will it cost?" The answer depends on several factors, including the size of the extension, the specification, access to the property, and the type of work involved.
At JL Brickwork, we build house extensions across Sunderland, Washington, South Shields, Gateshead, and the surrounding areas. Below is a general guide to extension costs and what homeowners should expect when planning a project.
Average House Extension Costs
As a rough guide:
House Extension Cost Sunderland
Small rear extension (3m x 3m): £15,000 - £25,000
Medium rear extension (4m x 4m): £25,000 - £40,000
Large open-plan extension: £40,000+
Double-storey extension: £45,000 - £80,000+
These figures can vary depending on design, foundations, drainage requirements,
steelwork, roofing, windows, doors, and internal finishes.
What Affects the Cost?
Foundations
Every extension requires suitable foundations. Ground conditions, nearby trees, drains, and existingstructures can all affect the depth and specification required.
Brickwork
Matching existing brickwork is important to ensure the extension blends seamlessly with the originalproperty. At JL Brickwork, we carefully source matching materials wherever possible.
The type of roof has a major impact on cost. Flat roofs are generally more affordable, while pitchedroofs often provide a more traditional appearance and additional internal space.
Modern bifold doors, sliding doors, and large glazed openings can significantly enhance an extensionbut will also increase the overall budget.
For many Sunderland homeowners, extending is often more cost-effective than moving house. Estateagent fees, legal costs, stamp duty, and moving expenses can quickly add up.
A well-designed extension allows you to create additional living space while staying in the area youalready know and enjoy.
Some of the most popular
extension projects we build include:
Kitchen extensions
Rear house extensions
Open-plan living spaces
Double-storey extensions
Side extensions
Utility rooms
Garden room extensions
Each project is tailored to the homeowner's requirements and budget.
With over 20 years of experience, JL Brickwork has built a reputation for quality workmanship, reliability,and professional service. We specialise in:
House extensions
Brickwork
Structural alterations
Garden walls
General building work
Our goal is to provide high-quality building services that add value to your property and improve your home.
Get a Free Quote
f you're planning a house extension in Sunderland or the surrounding areas, contact JL Brickworktoday.We'll be happy to discuss your ideas, provide expert advice, and offer a free no-obligation quotation
Call Jordan on 07786 818018
JL Brickwork – Trusted Extension Builders in Sunderland
At JL Brickwork, we take pride in delivering high-quality workmanship, reliable service, and excellent attention to detail on every project we undertake. Whether you're planning a house extension, garden wall, garage conversion, or a complete brickwork package, our experienced team is committed to achieving outstanding results that add value and enhance your property. We work closely with homeowners from the initial consultation through to project completion, ensuring clear communication and professional standards throughout. Serving Sunderland, South Tyneside, and the surrounding areas, JL Brickwork has built a reputation for quality, trust, and customer satisfaction. Contact us today for a free, no-obligation quotation and expert advice on your next building project.
With many years of experience in the construction industry, JL Brickwork understands the importance of delivering projects on time, within budget, and to the highest standards. We use quality materials, proven building methods, and skilled craftsmanship to ensure every extension, wall, patio, and renovation stands the test of time. Our commitment to customer satisfaction has resulted in numerous recommendations and repeat clients across the North East. If you're looking for a dependable local builder who values quality and professionalism, JL Brickwork is ready to help turn your ideas into reality with expert guidance and exceptional workmanship. House Extension Cost Sunderland
