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Rear Extension Approval Rates in Lake District NPA

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 514 real decisions tell us about rear extension outcomes in Lake District NPA.

514 real decisions·January 2020 to present·Updated June 2026
95.9%
Approval Rate
514
Decisions
493
Approved
21
Refused
95.9% approved. But 21 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.

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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.

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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 Lake District NPA.

TypeDecisionsRate
Rear Extension514
95.9%
Side Extension346
95.7%
Flat Conversion44
95.5%
Basement73
94.5%
Conservatory836
94.0%
Extension (General)5,580
93.9%
Wraparound Extension30
93.3%
Outbuilding1,460
93.1%
Loft Conversion108
92.6%
Garage / Parking2,661
91.6%
Front Extension47
91.5%
Dormer449
89.5%
Annex351
86.9%
Change of Use (Residential)1,811
86.1%
New Build740
80.0%
See how this applies to your postcode →

What the data tells us

1
95.9% of rear extension applications in Lake District NPA get approved. That means 21 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

21 rear extension applications in Lake District NPA 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.

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Free · Property report emailed in minutes · Based on 3,290,000+ real decisions

More Lake District NPA planning data

Methodology: Based on 514 planning decisions classified as rear extensions in Lake District NPA, January 2020 to present. 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 Lake District NPA Council's public planning portal. Full methodology →
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