Basement planning approval rate in Three Rivers
50% of 18 decided basement applications in Three Rivers 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.
50%
Approval rate, all years, from 18 decided
18
decided basement applications in Three Rivers: 9 approved, 9 refused
Unknown
Recent rate, decided since 2022: only 6 decided, fewer than 8
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 Withdrawn applications are excluded.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 Three Rivers
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 |
|---|---|---|---|
| 24/1837/FUL | 2025 | Refused | Sub-division of site; construction of two storey detached dwelling, including basement level, solar panels, access, parking and landscaping works. Meldon Chenies Road Chorleywood Rickmansworth Hertfordshire WD3 5LY |
| 25/0080/FUL | 2025 | Refused | Demolition of existing buildings; construction of two single-storey buildings; construction of a two-storey basement level car park; alterations to parking,... D K Engineering Little Green Street Farm Green Street Chorleywood Rickmansworth Hertfordshire WD3 6EA |
| 25/0748/FUL | 2025 | Refused | Demolition of existing dwelling and construction of a self-build two-storey dwelling with basement and accommodation in the roof served by a crown roof and f... 24 Copthorne Road Croxley Green Rickmansworth Hertfordshire WD3 4AQ |
| 24/0317/RSP | 2024 | Approved | Retrospective: Roof extensions including increase in ridge height; construction of a three storey rear extension including extension to basement at lower gro... Beech House Chess Way Chorleywood Rickmansworth Hertfordshire WD3 5TA |
| 23/0004/FUL | 2023 | Approved | Demolition of existing dwelling and construction of detached dwelling with basement level, accommodation within the roof served by front, side and rear dorme... 80 Valley Road Rickmansworth Hertfordshire WD3 4BJ |
| 19/2098/FUL | 2019 | Approved | New roof to existing rear extension, single storey rear infill extension, external render to exterior and basement extension with four new rooflights 24 Sycamore Road Croxley Green WD3 3TD |
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 Three Rivers
- Single-storey rear extension 89%, 223 decided
- Two-storey rear extension 84%, 147 decided
- Wraparound extension 93%, 69 decided
- Side extension 87%, 95 decided
- Loft conversion and dormer 79%, 33 decided
- Rooflight 94%, 103 decided
- Outbuilding and garden room 88%, 48 decided
- Porch 100%, 22 decided
- Garage conversion 100%, 27 decided
- Window and door 98%, 41 decided