Loft conversion and dormer planning approval rate in Three Rivers
79% of 33 decided loft conversion and dormer 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.
79%
Approval rate, all years, from 33 decided
33
decided loft conversion and dormer applications in Three Rivers: 26 approved, 7 refused
93%
Recent rate, decided since 2022, from 14 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 Withdrawn applications are excluded.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 loft conversion and dormer 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 |
|---|---|---|---|
| 25/0678/CLPD | 2025 | Approved | Certificate of Lawfulness Proposed Development: Rear dormer window Lavender House 172A Toms Lane Kings Langley Hertfordshire WD4 8NZ |
| 25/0957/CLPD | 2025 | Approved | Certificate of Lawfulness Proposed Development: Loft conversion including rear dormer and side window 1 Meadow Way Bedmond Abbots Langley Hertfordshire WD5 0RD |
| 25/1277/FUL | 2025 | Approved | Loft conversion including rear dormer, installation of doors and new front porch 88 Ebury Road Rickmansworth Hertfordshire WD3 1BN |
| 24/0568/FUL | 2024 | Refused | Demolition of existing dwelling and construction of two storey detached dwelling with lower ground floor, loft accommodation in the roofspace served by rear... 4 Heathside Road Moor Park Northwood Hertfordshire HA6 2EF |
| 20/2255/CLPD | 2021 | Refused | Certificate of Lawfulness Proposed Development: Extension to existing flank dormer windows and addition of further flank dormer window April Cottage 13 Moor Lane Rickmansworth WD3 1LE |
| 20/2009/FUL | 2020 | Refused | Construction of new roof form including increase in ridge height and creation of a mansard roof form 18 Brookdene Avenue Oxhey Hall WD19 4LF |
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
- 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