Basement planning approval rate in Dacorum
87% of 79 decided basement 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.
87%
Approval rate, all years, from 79 decided
79
decided basement applications in Dacorum: 69 approved, 10 refused
79%
Recent rate, decided since 2022, from 24 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 Withdrawn applications are excluded.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 basement 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 |
|---|---|---|---|
| 25/02497/LBC | 2026 | Approved | Conversion of ground floor and basement to form 2 no. two-bedroom flats and 1 no. one-bedroom flat and a safety deposit box business. Demolition of existing... 20 High Street Tring Hertfordshire HP23 5AH |
| 24/02090/FHA | 2025 | Approved | Construction of new lower ground floor extension, ground floor rear extension and raise roof to provide a first floor extension. Valley View South Bank Road Northchurch Berkhamsted Hertfordshire HP4 1LL |
| 24/02586/FHA | 2025 | Approved | Lower ground floor (basement) rear extension, garage conversion with new front bay window and 2 storey side extension to provide new garage/store and en-suit... 18 Millfield Berkhamsted Hertfordshire HP4 2PB |
| 23/02920/NMA | 2024 | Refused | Non material amendment to planning permission 23/00270/FHA (Two storey side extension, basement extension with adjusted external stepped access and alteratio... 2 Toms Hill Close Aldbury Tring Hertfordshire HP23 5SL |
| 23/03004/FHA | 2024 | Refused | Creation of single storey basement, erection of a first floor side extension, removal of chimney and alteration to roof form and installation of rear dormer... Tilding 118 Grove Road Tring Hertfordshire HP23 5PA |
| 23/00307/FHA | 2023 | Refused | Single storey extension including works in curtilage of Listed Building; new windows, pantry, wine cellar and potting shed. 54 Nettleden Road Little Gaddesden Berkhamsted Hertfordshire HP4 1PL |
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
- 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
- Window and door 93%, 407 decided