Annex approval rate in Brentwood
Brentwood approved 81.9% of annex applications, based on 188 decisions analysed.
Last updated: March 2026
81.9%
annex approval rate
188
Annex decisions
154
Approved
34
Refused
83.8%
Brentwood overall
Annex applications are approved at roughly the same rate as the Brentwood average (83.8%).
How annex compares in Brentwood
Annex
81.9%
Brentwood all applications
83.8%
Planning a annex in Brentwood?
81.9% get approved — but the odds vary by street. Your Pro Report 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
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✓ Nearest comparable annex decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Less than one set of revised drawings.
Other project types in Brentwood
84.1%
83.3%
82.2%
73.8%
83.4%
86.3%
80.7%
71.7%
83.9%
79.6%
76.4%
78.8%
81.4%
65.8%
62.5%