Annex approval rate in Merthyr Tydfil

Merthyr Tydfil approved 94.4% of annex applications, based on 18 decisions analysed.

Last updated: June 2026

94.4%

annex approval rate

Annex decisions

Approved

Refused

90.6%

Merthyr Tydfil overall

Annex applications are approved more often than the Merthyr Tydfil average (90.6%), suggesting the council is relatively receptive to these projects.

How annex compares in Merthyr Tydfil

Annex (18 decided)

94.4%

Merthyr Tydfil all applications (1,154 decided)

90.6%

94.4% get approved, but the odds vary by street. Your Full Planning Analysis shows exactly what gets approved and refused near your property.

✓ Your ward's annex approval rate
✓ Nearest comparable annex decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect

92.4%

98.6%

79.7%

88.6%

87.9%

New Build (48 decided)

89.6%

Outbuilding (42 decided)

85.7%

Dormer (34 decided)

79.4%

HMO (19 decided)

21.1%

81.2%

Conservatory (11 decided)

90.9%