CM23 planning approval rate
The CM23 postcode area falls under East Hertfordshire council, which has a 74.7% planning approval rate based on 14,403 decisions.
Last updated: October 2026
What this means for CM23
If you're planning a project in the CM23 area, your application will be decided by East Hertfordshire council. Based on historical data, around 25.3% of applications are refused. The approval rate varies by ward and application type, use our free tool to check your specific property.
What gets approved near your property?
In East Hertfordshire, 1 in 4 applications are refused. The PlanningLens property report runs to 17 pages on your address:
✓ Common refusal reasons in East Hertfordshire
✓ Your 10 nearest comparable planning decisions
✓ Appeal success rates
✓ PDF report to share with your architect
Free. Based on 14,403 decisions.
Planning professional? PlanningLens runs refusal alerts and evidence packs for East Hertfordshire and any other published UK council. See the data services →