Loft conversion and dormer planning approval rate in St Albans
68% of 670 decided loft conversion and dormer applications in St Albans 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.
68%
Approval rate, all years, from 670 decided
670
decided loft conversion and dormer applications in St Albans: 458 approved, 212 refused
68%
Recent rate, decided since 2022, from 272 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 Withdrawn applications are excluded.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 St Albans
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 |
|---|---|---|---|
| 5/2024/1053 | 2026 | Refused | Certificate of Lawfulness (proposed) - Dormer to the main roof 144 Harpenden Road St Albans Hertfordshire Al3 6Bz |
| 5/2025/2051 | 2026 | Refused | Front and rear dormer window to provide further bedroom with en-suite 12 Avenue St Nicholas Harpenden Hertfordshire Al5 2Bx |
| 5/2025/2063 | 2026 | Approved | Certificate of Lawfulness (proposed) - Roof extension and rear dormer window 17A Mount Drive Park Street St Albans Hertfordshire Al2 2Np |
| 5/2025/2098 | 2026 | Approved | Certificate of Lawfulness (proposed) - Rear dormer extension 38 Batford Road Harpenden Hertfordshire Al5 5At |
| 5/2025/2112 | 2026 | Refused | Certificate of Lawfulness (proposed) - New dormer to rear 441 Luton Road Harpenden Hertfordshire Al5 3Qe |
| 5/2025/2135 | 2026 | Approved | Certificate of lawfulness (proposed) - Hip to gable loft conversion 19 The Pleasance Harpenden Hertfordshire Al5 3Na |
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 St Albans
- Single-storey rear extension 42%, 1,253 decided
- Two-storey rear extension 20%, 592 decided
- Wraparound extension 26%, 177 decided
- Side extension 31%, 349 decided
- Rooflight 65%, 801 decided
- Outbuilding and garden room 57%, 370 decided
- Porch 45%, 124 decided
- Garage conversion 70%, 141 decided
- Basement 51%, 124 decided
- Window and door 65%, 477 decided