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Loft Conversion Approval Rates in Dartford

Loft conversions change your roofline — and that makes them one of the more closely scrutinised application types. Councils scrutinise visibility, overlooking and street character more closely than for ground-level work. Here's what the data shows in Dartford.

263 real decisions·January 2020 to August 2026·Updated August 2026
85.2%
Approval Rate
263
Decisions
224
Approved
39
Refused
85.2% approved. But 39 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 loft conversion approval rates matter

Loft conversions face more scrutiny than rear or side extensions because they change the property's profile from the street. Dormers, mansards and hip-to-gable alterations are particularly sensitive.

These are council averages. Your property is specific.

Two houses on the same street can get different outcomes.
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How loft conversions compare to other project types

Not all applications are treated equally. Here's how loft conversions stack up against other common projects in Dartford.

TypeDecisionsRate
Conservatory349
93.1%
Hip-to-Gable Conversion132
92.4%
Outbuilding514
90.3%
Extension (General)254
89.8%
Side Extension1,031
88.9%
Wraparound Extension102
88.2%
Rear Extension2,109
88.1%
Dormer892
87.2%
Garage / Parking1,933
87.2%
Front Extension249
85.9%
New Build743
85.9%
Annex106
85.8%
Basement96
85.4%
Loft Conversion263
85.2%
Change of Use (Residential)465
73.1%
Flat Conversion31
67.7%
HMO79
65.8%
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What the data tells us

1
85.2% of loft conversion applications in Dartford get approved. That means 39 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

39 loft conversion applications in Dartford 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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More Dartford planning data

Nearby councils loft conversion data

Methodology: Based on 263 planning decisions classified as loft conversions in Dartford, 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 Dartford Council's public planning portal. Full methodology →
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