Data-backed planning intelligence · 2,500,000+ decisions analysed across England, Scotland and Wales

Flat Conversion approval rate in Merton

Merton approved 82.8% of flat conversion applications, based on 873 decisions analysed.

Last updated: March 2026

82.8%
flat conversion approval rate
873
Flat Conversion decisions
723
Approved
150
Refused
85.9%
Merton overall

Flat Conversion applications are refused more often than the Merton average (85.9%), suggesting the council scrutinises these projects more closely.

How flat conversion compares in Merton

Flat Conversion (873 decided)
82.8%
Merton all applications (17,557 decided)
85.9%

Planning a flat conversion in Merton?

82.8% get approved — but the odds vary by street. Your Pro Report shows exactly what gets approved and refused near your property.

✓ Your ward's flat conversion approval rate
✓ Nearest comparable flat conversion decisions
✓ Refusal triggers specific to your area
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Less than one set of revised drawings.

Other project types in Merton

Rear Extension (5,617 decided)
81.5%
Loft Conversion (3,839 decided)
89.9%
Dormer (2,346 decided)
88.3%
Garage / Parking (2,106 decided)
88.7%
Side Extension (1,898 decided)
84.9%
New Build (1,232 decided)
87.7%
Hip-to-Gable Conversion (1,151 decided)
86.8%
83.9%
Outbuilding (1,002 decided)
82.8%
Extension (General) (874 decided)
86.6%
Basement (573 decided)
91.3%
Wraparound Extension (470 decided)
88.5%
Conservatory (288 decided)
93.1%
Front Extension (229 decided)
78.2%
HMO (174 decided)
55.7%
Annex (101 decided)
79.2%
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