Planning approval rates in Hertsmere
Explore approval rates by project type from 9,789 decided application records in Hertsmere.
Checked against 20.6 million UK planning applications on file across 420 planning authorities. Approval rates from 2,343,419 decisions we classified across 181 councils in England.
Open a project type to see its approved and refused counts and example decisions. The council-wide archive count includes other kinds of planning applications.
Compare project types in Hertsmere
| Project type | Approval rate | Decided | Recent rate (since 2022) |
|---|---|---|---|
| Single-storey rear extension | 81% | 1,787 | 78% (630) |
| Two-storey rear extension | 85% | 972 | 86% (384) |
| Wraparound extension | 92% | 436 | 93% (176) |
| Side extension | 84% | 702 | 86% (217) |
| Loft conversion and dormer | 79% | 281 | 80% (109) |
| Rooflight | 90% | 918 | 91% (388) |
| Outbuilding and garden room | 78% | 274 | 79% (128) |
| Porch | 90% | 195 | 88% (83) |
| Garage conversion | 96% | 294 | 95% (107) |
| Basement | 84% | 136 | 89% (45) |
| Window and door | 90% | 223 | 87% (97) |
How to read these rates
These are historical outcomes for the applications in our archive, not the chance of approval for your property. Compare the same project type and read the decided count alongside each percentage.
About the planning data
Rate = approved divided by approved plus refused, using the decisions in our classified archive. Rates are withheld as unknown where fewer than 8 records of that project type were decided. Withdrawn applications are excluded.
Recent means records dated 2022 or later. Records without a year are excluded from the recent rate but remain in the all-years figure. Historical coverage varies by council, and duplicate application references may remain in the archive.
Approval rates from 2,343,419 decisions we classified across 181 councils in England. The wider 20.6 million application catalogue is accessible through PlanIT; it is not the dataset used to calculate these percentages.
Read the full methodology and coverage notes.
Project types and outcomes are classified from council records. Check the original application and decision notice before relying on an individual example. A page rebuild does not mean every council record has just been refreshed.
About the planning data
Checked against 20.6 million UK planning applications on file across 420 planning authorities. Approval rates from 2,343,419 decisions we classified across 181 councils in England.