Side extension planning approval rate in Barnet
81% of 1,910 decided side extension applications in Barnet 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.
A similar project nearby can help you understand the council's decisions. Its outcome does not establish what will be acceptable at your address.
81%
Approval rate, all years, from 1,910 decided
1,910
decided side extension applications in Barnet: 1,541 approved, 369 refused
81%
Recent rate, decided since 2022, from 822 decided
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 Withdrawn applications are excluded.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.
Example side extension decisions in Barnet
These examples deliberately include approved and refused applications where available. They are not a representative sample or a list of the latest decisions. Look up each reference on the council's planning search to read the plans and decision notice.
| Reference | Year | Decision | Application |
|---|---|---|---|
| 25/2211/HSE | 2026 | Refused | Two storey side extension including integrated garage with door to match existing York Lodge |
| 25/3466/FUL | 2026 | Approved | Single storey side extension with 2no. conservation rooflights. Alterations to the existing access steps and new retaining wall Flat 1A |
| 25/3928/192 | 2026 | Approved | Single storey side extension. Single storey rear extension. Roof extension with rear dormer windows, 14no. front and 2no. side facing rooflights following th... |
| 25/4243/HSE | 2026 | Approved | First floor side extension |
| 25/4565/HSE | 2026 | Refused | Conversion of garage into a habitable room including new window to replace existing door. Single storey side extension. Blocking up an existing ground floor... |
| 25/4624/HSE | 2026 | Refused | Two storey side extension |
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.
Other project types in Barnet
- Single-storey rear extension 69%, 8,593 decided
- Two-storey rear extension 76%, 3,903 decided
- Wraparound extension 87%, 1,573 decided
- Loft conversion and dormer 74%, 1,532 decided
- Rooflight 87%, 4,921 decided
- Outbuilding and garden room 73%, 1,394 decided
- Porch 82%, 478 decided
- Garage conversion 90%, 574 decided
- Basement 84%, 1,816 decided
- Window and door 92%, 1,399 decided