Single-storey rear extension planning approval rate in Brentwood
84% of 1,730 decided single-storey rear extension applications in Brentwood 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.
84%
Approval rate, all years, from 1,730 decided
1,730
decided single-storey rear extension applications in Brentwood: 1,459 approved, 271 refused
88%
Recent rate, decided since 2022, from 562 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 Withdrawn applications are excluded.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 single-storey rear extension decisions in Brentwood
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 |
|---|---|---|---|
| 25/01161/HHA | 2026 | Approved | Conversion of garage to habitable space. Construction of single storey rear extension and patio area. Fenestration and external material alterations (part re... 8 High Street Ingatestone Essex CM4 9EE |
| 25/01203/HHA | 2026 | Approved | Part single, part double rear extension, changes to external materials to include brick and render and alterations to fenestration's. 7 Weald Road Brentwood Essex CM14 4SX |
| 25/01223/HHA | 2026 | Approved | Proposed ground floor rear extension and raised patio. Fenestration and external material alterations. Amalis Wyatts Green Road Wyatts Green Essex CM15 0PT |
| 24/01343/FUL | 2025 | Refused | Add second floor rear extension and conversion of offices on first and second floors to create 2 No. x 2 bed and 2 No x studio flats with associated bin and... 137 High Street Brentwood Essex CM14 4RZ |
| 25/00018/HHA | 2025 | Refused | Erection of a single-storey rear extension, small porch, double-storey extension above the garage, conversion of the Dutch gable roof to an open gable roof w... 112 Ingrave Road Brentwood Essex CM13 2AQ |
| 25/00042/PN42 | 2025 | Refused | Single storey rear extension. The proposed extension would extend 5m beyond the rear wall of the original dwelling, the maximum height of the proposed extens... 26 Cornwall Road Pilgrims Hatch Essex CM15 9LX |
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 Brentwood
- Two-storey rear extension 78%, 1,295 decided
- Wraparound extension 81%, 339 decided
- Side extension 81%, 1,023 decided
- Loft conversion and dormer 73%, 365 decided
- Rooflight 80%, 386 decided
- Outbuilding and garden room 77%, 396 decided
- Porch 90%, 233 decided
- Garage conversion 90%, 198 decided
- Basement 81%, 99 decided
- Window and door 88%, 289 decided