Two-storey rear extension planning approval rate in Dacorum
92% of 841 decided two-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.
92%
Approval rate, all years, from 841 decided
841
decided two-storey rear extension applications in Dacorum: 774 approved, 67 refused
86%
Recent rate, decided since 2022, from 241 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 Withdrawn applications are excluded.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 two-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 |
|---|---|---|---|
| 25/02729/FHA | 2026 | Approved | Single storey rear extension and two storey side and rear extension. Replacement of Porch. Westbrook Cottage Bushfield Road Bovingdon Hemel Hempstead Hertfordshire HP3 0DR |
| 25/02774/FHA | 2026 | Approved | First floor rear extension and loft conversion Broughtons Cottage The Common Chipperfield Kings Langley Hertfordshire WD4 9BL |
| 25/02775/LBC | 2026 | Approved | First floor rear extension and loft conversion Broughtons Cottage The Common Chipperfield Kings Langley Hertfordshire WD4 9BL |
| 25/03026/LDP | 2026 | Refused | Demolition of existing front dormer and side extension, construction of roof extension, one and two storey rear extensions and side extensions. Holly Tree Cottage Long Lane Bovingdon Hemel Hempstead Hertfordshire HP3 0PZ |
| 24/02620/FHA | 2025 | Refused | First floor rear extension 15 The Back Potten End Berkhamsted Hertfordshire HP4 2QS |
| 24/02844/FHA | 2025 | Refused | Construction of single storey side and rear extensions and two storey front and rear extensions, front porch and associated works. Cleft Oak Cottage Hollybush Close Potten End Berkhamsted Hertfordshire HP4 2SN |
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
- Single-storey rear extension 95%, 1,607 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