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

Rear Extension Approval Rates in New Forest National Park

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 969 real decisions tell us about rear extension outcomes in New Forest National Park.

969 real decisions·January 2020 to August 2026·Updated August 2026
91.5%
Approval Rate
969
Decisions
887
Approved
82
Refused
91.5% approved. But 82 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 New Forest National Park.

TypeDecisionsRate
Front Extension130
93.1%
Rear Extension969
91.5%
Side Extension528
91.1%
Outbuilding1,588
90.4%
Wraparound Extension74
89.2%
Extension (General)1,976
89.1%
Dormer429
88.1%
Garage / Parking1,328
86.8%
Conservatory468
86.3%
Loft Conversion42
83.3%
Annex49
79.6%
Basement38
78.9%
Change of Use (Residential)308
78.2%
New Build151
57.0%
See how this applies to your postcode →

What the data tells us

1
91.5% of rear extension applications in New Forest National Park get approved. That means 82 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

82 rear extension applications in New Forest National Park 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 3,780,000+ real decisions

More New Forest National Park planning data

Methodology: Based on 969 planning decisions classified as rear extensions in New Forest National Park, 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 New Forest National Park Council's public planning portal. Full methodology →
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