West Sussex · RH15
Extensions in Burgess Hill
A home extension adds new floor space to an existing property — commonly a rear or side-return kitchen extension, a wraparound, or a first-floor addition — and typically involves planning or permitted development approval, Building Regulations, and coordination of groundworks, structure, roofing and internal finishing.
In Burgess Hill, that covers St Andrews, Gattons, Kings Way, Fairfield, Leylands, Victoria Park, Wivelsfield Green. Burgess Hill has expanded substantially since the Victorian era, with a historic core supplemented by significant 20th and 21st-century housing development, including several large newer estates on the town's edges. This mix means both period-property refurbishment and more straightforward extension work on modern housing are common locally.
Coverage
Areas we cover in Burgess Hill for extensions
Property styles in Burgess Hill
Victorian and Edwardian housing sits close to the town centre, with substantial areas of postwar and recent new-build estate housing across the wider town. Newer estate housing typically has more straightforward extension potential, subject to individual developer restrictive covenants which we advise clients to check.
Planning considerations
Mid Sussex District Council is the local planning authority. Some newer developments carry restrictive covenants set by the original developer that go beyond standard planning control — worth checking your title deeds alongside our planning assessment.
How it works
Our extensions process
- 01
Feasibility and survey
Assessing what is achievable on the plot, including boundary conditions, trees, drainage and neighbouring properties.
- 02
Design
Developing layout and elevations that work with the existing house, in scale and materials.
- 03
Planning route
Establishing whether the extension falls under permitted development or requires a full planning application, and submitting accordingly.
- 04
Party wall matters
Serving party wall notices where the extension is near a boundary, ahead of any groundworks starting.
- 05
Construction
Groundworks, structure, roof, and first fix through to decoration, with the existing house kept weathertight throughout.
- 06
Completion
Building Control sign-off, snagging list and handover.
Also in this area
Other services we provide in Burgess Hill
Nearby coverage
Extensions in nearby areas
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FAQs
Extensions in Burgess Hill: FAQs
Do you provide extensions across all of Burgess Hill?
Yes, we cover the RH15 postcode area in full, including St Andrews, Gattons, Kings Way, Fairfield, Leylands, Victoria Park, Wivelsfield Green.
Do I need planning permission for a rear extension?
Many single-storey rear extensions fall under permitted development if they meet size, height and boundary criteria. Larger extensions, those on designated land, or properties where permitted development rights have been removed, need a full planning application. We assess this during the feasibility stage.
What is a party wall notice and do I need one?
If your extension involves work at or near a shared boundary, the Party Wall etc. Act 1996 usually requires you to notify your neighbour before work starts. We flag this during design so notices can be served in good time.
Do new-build estates in Burgess Hill have restrictions on extending?
Some do, through developer-imposed restrictive covenants in addition to normal planning control. We recommend checking your title deeds, and we factor this into our feasibility advice where relevant.
Get a quote for extensions in Burgess Hill
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Last reviewed 2026-07-19.