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Loft Conversion Approval Rates in Rhondda Cynon Taf

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 Rhondda Cynon Taf.

120 real decisions·January 2020 to September 2026·Updated September 2026
93.3%
Approval Rate
120
Decisions
112
Approved
8
Refused
93.3% approved. But 8 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 Rhondda Cynon Taf.

TypeDecisionsRate
Wraparound Extension34
100.0%
Side Extension269
97.4%
Front Extension30
96.7%
Extension (General)660
95.8%
Rear Extension609
95.7%
Dormer198
93.9%
Loft Conversion120
93.3%
Conservatory56
92.9%
Annex58
91.4%
Garage / Parking796
90.7%
Flat Conversion42
88.1%
Outbuilding166
88.0%
Change of Use (Residential)449
84.4%
Basement40
80.0%
New Build71
74.6%
HMO52
46.2%
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What the data tells us

1
93.3% of loft conversion applications in Rhondda Cynon Taf get approved. That means 8 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

8 loft conversion applications in Rhondda Cynon Taf 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 Rhondda Cynon Taf planning data

Methodology: Based on 120 planning decisions classified as loft conversions in Rhondda Cynon Taf, January 2020 to September 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 Rhondda Cynon Taf Council's public planning portal. Full methodology →
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