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Rear Extension Approval Rates in Newport

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 734 real decisions tell us about rear extension outcomes in Newport.

734 real decisions·January 2020 to present·Updated June 2026
89.4%
Approval Rate
734
Decisions
656
Approved
78
Refused
89.4% approved. But 78 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 Newport.

TypeDecisionsRate
Conservatory208
93.8%
Extension (General)490
91.2%
Rear Extension734
89.4%
New Build416
88.5%
Outbuilding164
88.4%
Garage / Parking1,001
85.8%
Side Extension448
81.7%
Hip-to-Gable Conversion38
81.6%
Annex51
78.4%
Wraparound Extension62
77.4%
Loft Conversion118
76.3%
Change of Use (Residential)355
75.8%
Dormer220
75.0%
Front Extension99
71.7%
Flat Conversion35
54.3%
HMO71
53.5%
See how this applies to your postcode →

What the data tells us

1
89.4% of rear extension applications in Newport get approved. That means 78 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

78 rear extension applications in Newport 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 Newport planning data

Nearby councils rear extension data

Methodology: Based on 734 planning decisions classified as rear extensions in Newport, 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 Newport Council's public planning portal. Full methodology →
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