Single-storey rear extension planning approval rate in Dacorum
95% of 1,607 decided single-storey rear extension applications in Dacorum 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.
95%
Approval rate, all years, from 1,607 decided
1,607
decided single-storey rear extension applications in Dacorum: 1,520 approved, 87 refused
91%
Recent rate, decided since 2022, from 579 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 Withdrawn applications are excluded.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 Dacorum
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 |
|---|---|---|---|
| 25/02488/FHA | 2026 | Approved | Single storey rear extension, fenestration changes and extension to existing driveway. 50 Bridgewater Road Berkhamsted Hertfordshire HP4 1JB |
| 25/02508/FHA | 2026 | Approved | Single storey rear extension. Rear raised terrace. Replacement windows and doors. New porch canopy. Painted render and vertical cedar cladding to front eleva... 65 Bridgewater Road Berkhamsted Hertfordshire HP4 1JB |
| 25/02751/FHA | 2026 | Approved | Single storey rear extension, new bay window at rear of first floor and loft conversion including rooflights to front roof slope and dormers to rear roof slopes 40 Elizabeth Ii Avenue Berkhamsted Hertfordshire HP4 3BF |
| 25/03141/FHA | 2026 | Refused | Replacement rear extension roof (with lower roof form), loft conversion with rear dormer & front roof lights 71 Bridgewater Road Berkhamsted Hertfordshire HP4 1JB |
| 25/03170/FUL | 2026 | Refused | Rear extension and re-design of the facade. Internal refurbishment. 126 Bennetts End Road Hemel Hempstead Hertfordshire HP3 8DZ |
| 26/00062/FHA | 2026 | Refused | Single storey rear extension, with extension of patio space. Addition of a small front porch and addition of solar panels. 29 Parsons Close Flamstead St Albans Hertfordshire AL3 8EB |
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 Dacorum
- Two-storey rear extension 92%, 841 decided
- Wraparound extension 93%, 266 decided
- Side extension 94%, 775 decided
- Loft conversion and dormer 88%, 413 decided
- Rooflight 94%, 396 decided
- Outbuilding and garden room 89%, 399 decided
- Porch 95%, 208 decided
- Garage conversion 95%, 209 decided
- Basement 87%, 79 decided
- Window and door 93%, 407 decided