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Rear Extension Approval Rates in Lancaster

Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 439 real decisions tell us about rear extension outcomes in Lancaster.

439 real decisions·January 2020 to present·Updated June 2026
92.3%
Approval Rate
439
Decisions
405
Approved
34
Refused
92.3% approved. But 34 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 Lancaster

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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.

Rear Extension approval rate by ward

#WardDecisionsApprovedRate
1Bolton And Slyne Ward77
100.0%
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These are council averages. Your property is specific.

Two houses on the same street can get different outcomes.
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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 Lancaster.

TypeDecisionsRate
Wraparound Extension38
97.4%
Conservatory179
96.1%
Extension (General)490
92.9%
Rear Extension439
92.3%
Garage / Parking333
92.2%
Side Extension194
90.2%
Hip-to-Gable Conversion70
90.0%
Dormer247
89.5%
Outbuilding118
89.0%
New Build140
88.6%
Loft Conversion42
85.7%
Change of Use (Residential)153
78.4%
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What the data tells us

1
92.3% of rear extension applications in Lancaster get approved. That means 34 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

34 rear extension applications in Lancaster 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 Lancaster planning data

Methodology: Based on 439 planning decisions classified as rear extensions in Lancaster, 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 Lancaster Council's public planning portal. Full methodology →
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