Bexley looks like a straightforward borough to navigate. Mostly post-war suburban streets, relatively few listed buildings, plenty of semi-detached homes that seem ripe for extensions. But the moment you start digging into what actually applies to your specific property, the picture gets complicated fast — until you see what planning constraints apply to your exact address — free, in about a minute.
The short version
- Green Belt covers Bexley's south and east fringes — but the boundary isn't always where you'd expect
- Conservation areas in Old Bexley Village, Lamorbey, and Blendon change what's permitted, even for small works
- Flood zones along the Cray and Shuttle rivers affect more properties than most homeowners realise
- Most homeowners don't realise their property may carry constraints that aren't obvious from the street
The Green Belt question most people get wrong
Bexley's Green Belt stretches across its southern and eastern edges — Lesnes Abbey Woods, Footscray Meadows, Joydens Wood. Most homeowners in DA5, DA14, or DA16 assume they're either in it or they're not. But the boundary cuts through streets, sometimes between neighbouring properties. Being a few doors down from someone who just built a large extension tells you almost nothing about whether you can do the same. The Green Belt status of your specific plot matters enormously — and it's not something you can reliably guess from a postcode.
Conservation areas and what they actually mean for your project
Old Bexley Village, Lamorbey, and Blendon are all designated conservation areas. If your property falls within one, or even immediately adjacent to one, the scope of what you can do without permission shrinks significantly. Most homeowners picture conservation areas as affecting only grand old buildings — the reality is that works as routine as replacing windows, adding a satellite dish, or changing external cladding can require consent in ways they wouldn't elsewhere. The best way to know how this affects your specific plans is to check whether your property sits inside a conservation area boundary and what that means for your project.
Flood zones
Properties near the River Cray, the Shuttle, or their tributaries may fall within a flood zone. This can affect permitted development rights and trigger additional requirements on certain projects. The boundary isn't always obvious — some affected properties are several streets back from the water.
Why your neighbour's extension doesn't tell you much
Bexley is predominantly post-war suburban housing, which means permitted development rights are often more usable here than in older inner-London boroughs. But "often more usable" is doing a lot of work in that sentence. Article 4 directions, plot size, existing extensions, proximity to protected land, and the specifics of what's already been built on your site all affect what's actually available to you. Two houses on the same street can have meaningfully different planning situations — and what got approved next door may not be a useful guide at all.
This is the part most homeowners discover too late: it's not just about whether you need permission, it's about your odds of getting it if you do. What similar projects on your street have been approved or refused — and why — is the kind of intelligence that changes decisions. With a £548 application fee and an eight-week wait, getting that clarity before you commit matters. With WhatCanIBuild, you can see what's been approved and refused on streets like yours, and what that means for your specific project — no signup needed.
These rules vary by property
Conservation areas, Article 4 directions, and other constraints can change everything. Check what actually applies to your address.
Check my address