House Extensions
Single storey, double storey, rear and wrap-around extensions across Prestwich.
Learn more →KJL Builders are local, fully insured builders covering Prestwich and the surrounding areas — house extensions, knock throughs, garage conversions, porches, bricklaying, garden walls, kitchen renovations, loft conversions and commercial building work, all professionally managed from first quote to final finish.
Fill in the form below with a few details about your Prestwich project and we'll get back to you with a free, no-obligation quote.
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Prestwich has a wide mix of property styles, from period terraces and semis to inter-war housing, post-war estates and newer developments — and each comes with its own considerations when extending, converting or renovating. Having worked across Prestwich and the surrounding areas, we understand the construction challenges that different types of properties can present and what's required to keep projects running smoothly through building control and achieve sign-off from Bury Council without unnecessary delays.

Complete protection for your property and our team throughout the work.
Experience with the area's period terraces, semis, post-war estates and newer developments.
From the centre of Prestwich out to Prestwich Village, Sedgley Park, Rainsough and beyond.
Clear, fair quotes with no hidden costs before any work begins.
We liaise directly with Bury Council building control, architects and structural engineers, and can source these professionals for you.
We don't take large payments up front — payments are staged against completed, inspected work.
Every building service we offer, available right across Prestwich.
House Extensions
Single storey, double storey, rear and wrap-around extensions across Prestwich.
Learn more →Knock Through
Structural wall removal and steel beam installation for open-plan Prestwich homes.
Learn more →Garage Conversions
Turn your Prestwich garage into an office, bedroom, gym or extra living space.
Learn more →Porches
Open, enclosed and gable-fronted porches that suit the area's terraces and semis.
Learn more →Bricklaying Contractors
New brickwork, blockwork, repairs and repointing matched to the local period brick.
Learn more →Garden Walls
Boundary walls, retaining walls and brick garden walls built to last.
Learn more →Commercial Builders
Brickwork, steel installation, dry lining, plastering and painting for Prestwich businesses.
Learn more →Kitchen Fitters
Full kitchen renovations and fitted installations for homes across Prestwich.
Learn more →Loft Conversions
Dormer, Velux and hip-to-gable loft conversions, loft boarding and loft bedrooms, offices and ensuites for homes across Prestwich.
Learn more →We cover every Prestwich postcode district — from the centre out to the surrounding areas. Here's a full breakdown of the areas within each postcode.
| Postcode | Areas Covered |
|---|---|
| M25 | Prestwich, Sedgley Park, Simister |
Don't see your exact street listed? We cover the whole of Prestwich — get in touch and we'll confirm we cover your postcode.
Costs vary by property type and the scale of work — a period terrace or a semi in Prestwich will differ from a new-build. Here's a rough guide to help with budgeting; we recommend a site visit for an accurate quote.
Porches, garden walls, bricklaying repairs and small garage conversions.
Knock throughs, full garage conversions and single storey extensions.
Double storey extensions, wrap-around extensions and commercial fit-outs.
For an accurate estimate, we recommend requesting a personalised quote based on your Prestwich property and project requirements. Get in touch →
As well as Prestwich itself, we cover the surrounding towns and areas, including:
A clear, structured process to keep your Prestwich project on track from start to finish.
We discuss your ideas, goals and budget for your Prestwich property.
We visit your property to assess the work and confirm exactly what's needed.
A clear, transparent breakdown of costs, materials, labour and timelines.
We liaise with Bury Council building control and, where needed, architects and structural engineers.
Our experienced team carries out the work to a high standard, keeping you updated throughout.
We walk through the finished project with you to make sure everything meets your expectations.
Feedback from Prestwich homeowners and businesses who chose KJL Builders.
KJL Builders extended our terrace in Prestwich and matched the original brickwork perfectly. Professional from the first quote to the final walkthrough.
We had a knock through done on our semi in Prestwich — tidy, reliable and the steel beam installation was handled without any fuss.
Converted our garage in Prestwich into a home office. Great communication throughout and finished on schedule.
Useful information before you start planning a building project in Prestwich.
Ask us a questionWe cover the whole of the M25 postcode district — including Prestwich Village, Sedgley Park, Rainsough and Simister — plus the surrounding area.
Yes. Prestwich and the surrounding area include conservation areas and listed properties, particularly in the older parts of town. We're experienced working within these constraints and can advise on what's required before work starts.
Yes, we liaise directly with Bury Council's building control team and, where required, architects and structural engineers — and can source these professionals for you if you don't already have your own.
Yes, alongside period terraces and semis across the surrounding areas, we also carry out work on properties in and around the centre of Prestwich, subject to any building management rules that apply.
House extensions, knock throughs and steel beam installation, garage conversions, porches, bricklaying, garden walls, kitchen renovations, loft conversions and commercial building work — all available across every area of Prestwich.
Costs vary widely depending on the project and property type, from around £1,500 for smaller jobs to £30,000+ for larger extensions and commercial work. Contact us for a personalised quote based on your property.
We don't take large payments up front. Payments are staged against completed, inspected work, and for structural elements we don't take payment until the building inspector has signed them off.
Tell KJL Builders what you have planned and arrange a free quote anywhere in Prestwich.