Data-backed planning intelligence · 3,780,000+ decisions analysed across England

Rear Extension Approval Rates in Barking & Dagenham

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 4,814 real decisions tell us about rear extension outcomes in Barking & Dagenham.

4,814 real decisions·January 2020 to August 2026·Updated August 2026
75.5%
Approval Rate
4,814
Decisions
3,633
Approved
1,181
Refused
75.5% approved. But 1,181 refused since 2020. Each refusal cost the homeowner time and money on drawings and application fees. Understanding your local data before you apply is the difference between confidence and a costly gamble.

Check Planning Approval Patterns in Barking & Dagenham

See your ward's approval rate and nearby planning decisions — free and instant.

Check My Postcode

Why rear extension approval rates matter

Rear extensions sit in the middle of the pack nationally. They're common enough that councils have clear precedent — but that cuts both ways. If your neighbours have been refused, that precedent works against you too.

These are council averages. Your property is specific.

Two houses on the same street can get different outcomes.
Check your postcode to see what actually happens near your address.

Check My Postcode

How rear extensions compare to other project types

Not all applications are treated equally. Here's how rear extensions stack up against other common projects in Barking & Dagenham.

TypeDecisionsRate
Rear Extension4,814
75.5%
Conservatory127
73.2%
Extension (General)235
69.4%
Outbuilding486
68.1%
Garage / Parking726
66.3%
Wraparound Extension246
60.2%
Dormer475
56.0%
Side Extension1,499
54.6%
Front Extension341
51.9%
Loft Conversion257
45.9%
New Build194
42.3%
Hip-to-Gable Conversion148
39.9%
Change of Use (Residential)429
36.8%
Annex63
36.5%
Flat Conversion78
34.6%
HMO139
5.8%
See how this applies to your postcode →

What the data tells us

1
75.5% of rear extension applications in Barking & Dagenham get approved. That means 1,181 homeowners since 2020 have been refused. Not terrible odds, but not a foregone conclusion.
3
Council averages are starting points, not guarantees. The decisions that matter most are the comparable ones near your specific property — because planning officers look at precedent, character and the immediate context of your street.

Before you spend £5,000+ on architects and drawings

1,181 rear extension applications in Barking & Dagenham have been refused since 2020. Many of those homeowners had already paid for drawings and application fees. A free, property-specific report shows you what gets approved — and what gets refused — near your property.

Check my postcode
Free · Property report emailed in minutes · Based on 3,780,000+ real decisions

More Barking & Dagenham planning data

Nearby councils rear extension data

Methodology: Based on 4,814 planning decisions classified as rear extensions in Barking & Dagenham, January 2020 to August 2026. Classification uses keyword matching against proposal descriptions (matching generate_site_data.py rules). A single application may appear in multiple categories. Approval rate = approved / (approved + refused). Pending, withdrawn and invalid applications excluded. Data from Barking & Dagenham Council's public planning portal. Full methodology →
Check planning approval patterns in Barking & Dagenham — Free