Most Bexley homeowners assume planning permission is a formality. It often is — until it isn't. The borough's approval rate tells you almost nothing about your individual chances, and the gap between those two things is where applications quietly fail.
The short version
- Bexley's approval rate varies significantly by project type, location, and property-specific constraints
- Green Belt, conservation areas, flood zones, and Article 4 directions all affect your odds — often in ways you won't spot yourself
- What's been approved on your street is one of the strongest signals for your own application
Your postcode is not your planning situation
Bexley stretches from SE2 in the west to DA18 in the east, and the planning landscape shifts dramatically across those postcodes. A homeowner in a post-war semi in Sidcup faces a very different set of rules from someone in Old Bexley Village or a property backing onto Joydens Wood. Most homeowners don't realise that their street — sometimes even their individual plot — can carry constraints that their neighbour two doors down doesn't share.
Before you budget £548 for a householder application, it's worth seeing what your property's specific constraint mix actually means for your project — free, takes about a minute.
The constraints most applicants underestimate
Bexley has Green Belt land across its southern and eastern fringes. It has conservation areas including Old Bexley Village, Lamorbey, and Blendon. It has listed buildings concentrated around Hall Place and Danson House. And it has flood zones running along the Cray and Shuttle rivers.
Here's what trips people up: knowing you're near a conservation area is not the same as knowing what that means for your extension, your outbuilding, or your conversion. The impact depends on your exact position, your property type, what's already been approved nearby, and how Bexley Council has interpreted similar applications. Article 4 directions can remove permitted development rights you assumed you had — without any notification to you as the homeowner.
The best way to know how these factors interact for your specific situation is to check what similar applications near your property actually achieved.
Don't assume suburban means straightforward
Bexley's predominantly post-war suburban character means many homeowners have more permitted development headroom than they expect — but that headroom disappears fast if your property sits in or near a constrained zone. The line can fall mid-street.
What the borough average won't tell you
Aggregate approval rates for Bexley look reasonable on paper. But those numbers include straightforward applications in unconstrained zones alongside refused applications in sensitive locations. They don't tell you whether a rear extension like yours, on a plot like yours, has been waved through or knocked back in your part of the borough.
Neighbourhood-level precedent matters enormously. Officers look at what's been approved and refused nearby. So should you — before you apply.
The decision that costs nothing upfront is the one you make before you submit
A refused application costs you the full £548 fee, weeks of waiting, and potentially complicates future attempts. Most refusals aren't random — they follow patterns that are visible in local decision data, if you know where to look.
WhatCanIBuild pulls together what's actually been approved and refused near your address, so you can see the approval record for your street and what it means for your odds — free, no signup needed.
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