Free planning check
Free Hertsmere planning permission check
Check in 23 seconds whether your Hertsmere project needs planning permission, and what the council has approved near you. £995 planning drawings, paid only when the council approves. Council and Portal fees are paid separately at submission.
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.
Hertsmere approval rates by project type
Historical approval rates in our archive, grouped by project type. These describe recorded decisions, not the chance of approval for your proposal. 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.
| Project type | Approval rate | Decided |
|---|---|---|
| Single-storey rear extension | 81% | 1,787 |
| Two-storey rear extension | 85% | 972 |
| Wraparound extension | 92% | 436 |
| Side extension | 84% | 702 |
| Loft conversion and dormer | 79% | 281 |
| Rooflight | 90% | 918 |
| Outbuilding and garden room | 78% | 274 |
| Porch | 90% | 195 |
| Garage conversion | 96% | 294 |
| Basement | 84% | 136 |
| Window and door | 90% | 223 |
A rate is only shown where at least 8 applications of that type were decided; smaller samples are shown as unknown. Withdrawn and undecided records are excluded. These figures cover all recorded years, including records without a year. Full Hertsmere approval rates.
Hertsmere planning resources
Check the authority's current records for the property's planning history, application requirements and local restrictions.
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Questions about planning in Hertsmere
Do I need planning permission for my project in Hertsmere?
Some house extensions, loft conversions and outbuildings can use permitted development rights in Hertsmere, but size alone does not establish eligibility. Check the property type, previous extensions, planning conditions and the rules for the proposed work. Householder rights do not apply to flats. Conservation areas and Article 4 directions restrict particular rights; they do not automatically require an application for every change. Listed building consent is a separate requirement for works affecting a listed building's special interest.
What is the planning approval rate in Hertsmere?
It depends on the project type. 81% of 1,787 decided single-storey rear extension applications in Hertsmere were approved. 79% of 281 decided loft conversion and dormer applications in Hertsmere were approved. 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. Every project type is on the Hertsmere approval rates page.
Read the official guidance on when permission is required, listed buildings and conservation areas and planning decision periods.
Approval rates are computed from 2,343,419 decided applications across 181 councils, published by each council. The free check is guidance from the public record, not a council decision.