Rear Extension approval rate in Chelmsford
Chelmsford approved 86.4% of rear extension applications, based on 118 decisions analysed.
Last updated: March 2026
86.4%
rear extension approval rate
118
Rear Extension decisions
102
Approved
16
Refused
85.7%
Chelmsford overall
Rear Extension applications are approved at roughly the same rate as the Chelmsford average (85.7%).
How rear extension compares in Chelmsford
Rear Extension
86.4%
Chelmsford all applications
85.7%
Planning a rear extension in Chelmsford?
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✓ Your ward's rear extension approval rate
✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
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✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Less than one set of revised drawings.
Other project types in Chelmsford
85.4%
83.5%
89.2%
89.2%
96.6%
96.0%
87.0%
90.0%
94.7%
100.0%