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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
18
Annex decisions
17
Approved
1
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%

Planning a annex in Merthyr Tydfil?

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Other project types in Merthyr Tydfil

Garage / Parking (171 decided)
92.4%
Rear Extension (141 decided)
98.6%
79.7%
Extension (General) (88 decided)
88.6%
Side Extension (58 decided)
87.9%
New Build (48 decided)
89.6%
Outbuilding (42 decided)
85.7%
Dormer (34 decided)
79.4%
HMO (19 decided)
21.1%
Front Extension (16 decided)
81.2%
Conservatory (11 decided)
90.9%
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