Looking for reliable builders for a home extension in South East London or Kent? We deliver rear, side, double-storey and wrap-around extensions — with clear communication, a tidy site and a quality finish from first visit to handover.
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Every home is different, and the right type of extension depends on your plot, budget and how you want to use the space. We work across South East London and Kent and regularly build the following extension types:
The most common type in terraced and semi-detached homes across SE London. A rear extension adds kitchen-diner space, a utility room or a larger living area at the back of the property. Single-storey rear extensions up to 3–4m often fall under Permitted Development, simplifying the process.
Common in Victorian and Edwardian terraces in areas like Lewisham, Greenwich and Blackheath. A side return fills the narrow gap down the side of the house to create a wider, more open ground floor. Often combined with a rear extension for a full L-shaped or wrap-around layout.
Adds space on both ground and first floor — ideal if you need both a larger kitchen and an extra bedroom. Double-storey extensions usually require planning permission but can deliver significant value. We manage the build from structure to finish.
Combines a rear and side return extension to create a fully open-plan ground floor. A popular choice for homeowners in Bexleyheath, Sidcup and Bromley who want to transform their ground floor layout.
One of the first questions homeowners ask is whether they need planning permission. Here's a straightforward guide:
Many single-storey rear extensions can be built without a planning application under Permitted Development (PD) rights. Typical limits:
PD rights may be removed in some conservation areas. We always check before proceeding.
A planning application is typically needed for:
We can advise on whether your project needs planning permission.
We deliver home extensions across South East London and Kent. Our core areas include Bexleyheath, Greenwich, Woolwich, Lewisham, Eltham, Sidcup, Dartford, Bromley and surrounding areas. Not sure if we cover your postcode? Send it over and we'll confirm.
Many single-storey rear extensions can be built under Permitted Development rights without a planning application. Side extensions and double-storey extensions usually need planning permission. We can advise on your specific situation.
A typical single-storey rear extension takes 8–14 weeks on site. Double-storey or more complex projects take longer. We agree a realistic programme at quote stage so you can plan ahead.
Yes. We coordinate the full build from structure through to finishes and snagging, including trusted trades and our certified electrical partner MrFuse.
Absolutely. Share your drawings and we'll advise on buildability, lead times and what's included in the quote.
Yes. Where structural openings are required — such as removing a wall to create an open-plan kitchen-diner — we coordinate the structural elements and ensure compliance with building regulations.
Yes, in most cases. We plan access and working zones carefully to minimise disruption to your household and neighbours.
We typically agree staged payments aligned with project milestones — so it's always clear what each payment covers and what has been completed.
Tell us your postcode and a rough idea of what you need. We'll come back with a clear next step and a free, no-obligation quote.
For electrical installations, testing and certification we collaborate with MrFuse – a certified electrical contractor. This helps us deliver complete projects with the right compliance and peace of mind for homeowners across South East London and Kent.
Partner website: mrfuse.uk
