Side Extension approval rate in Lisburn and Castlereagh City Council
Lisburn and Castlereagh City Council approved 100.0% of side extension applications, based on 357 decisions analysed.
Last updated: June 2026
100.0%
side extension approval rate
357
Side Extension decisions
357
Approved
0
Refused
93.6%
Lisburn and Castlereagh City Council overall
Side Extension applications are approved more often than the Lisburn and Castlereagh City Council average (93.6%), suggesting the council is relatively receptive to these projects.
How side extension compares in Lisburn and Castlereagh City Council
Side Extension
100.0%
Lisburn and Castlereagh City Council all applications
93.6%
Planning a side extension in Lisburn and Castlereagh City Council?
100.0% 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 side extension approval rate
✓ Nearest comparable side extension decisions
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Free planning check for Lisburn and Castlereagh City Council →
✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Other project types in Lisburn and Castlereagh City Council
92.7%
98.9%
99.5%
89.1%
89.6%
99.5%
98.6%
100.0%
96.4%
100.0%
100.0%
88.9%