Two-storey rear extension planning approval rate in Three Rivers
84% of 147 decided two-storey rear extension 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.
84%
Approval rate, all years, from 147 decided
147
decided two-storey rear extension applications in Three Rivers: 124 approved, 23 refused
84%
Recent rate, decided since 2022, from 62 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 Withdrawn applications are excluded.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 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 |
|---|---|---|---|
| 25/2008/FUL | 2026 | Approved | Construction of first floor rear extension, partial conversion of existing garage into habitable accommodation and alterations to fenestration detail. Trelawny 1 Ardross Avenue Northwood HA6 3DS |
| 25/0066/FUL | 2025 | Approved | Demolition of existing conservatory and erection of part single, part two storey rear extension and addition to windows to flank elevation 59 Silk Mill Road Oxhey Hall Watford Hertfordshire WD19 4TW |
| 25/0440/FUL | 2025 | Approved | Partial demolition of single storey rear extension and construction of part single, part two storey rear extension and two storey front extension; loft exten... Rawdon 29 Chalfont Lane Chorleywood Rickmansworth Hertfordshire WD3 5PR |
| 25/1648/FUL | 2025 | Refused | Demolition of existing outbuilding, construction of part single-storey, part two-storey front and rear extensions, front dormer window, rear rooflights, relo... Popes Croft Chandlers Lane Chandlers Cross Rickmansworth Hertfordshire WD3 4NE |
| 24/1543/FUL | 2024 | Refused | Construction of part two-storey, part single-storey side and rear extensions, loft conversion including insertion of rear dormer to provide 1no. new resident... 35 Lower Road Chorleywood Hertfordshire WD3 5LQ |
| 22/2364/FUL | 2023 | Refused | Single and two storey side extensions with rear alterations to fenestrations, loft conversion including increase in ridge height and rear dormer, gable windo... Anfield Burfield Road Chorleywood Hertfordshire WD3 5NS |
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
- 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
- Basement 50%, 18 decided
- Window and door 98%, 41 decided