Loft conversion and dormer planning approval rate in North Hertfordshire
77% of 95 decided loft conversion and dormer applications in North Hertfordshire 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.
77%
Approval rate, all years, from 95 decided
95
decided loft conversion and dormer applications in North Hertfordshire: 73 approved, 22 refused
68%
Recent rate, decided since 2022, from 31 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 Withdrawn applications are excluded. The eight-record threshold is a display rule, not a guarantee that a sample is statistically reliable.
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.
Coverage for this project type
Dated records in this archive span 2015 to 2025. 0 of 95 decided records have no year recorded. Coverage may have gaps within the date range.
31 decided records are dated 2022 or later. This is an archive count, not a measure of all current council activity.
These project categories can include different application routes and proposals combining several kinds of work. Read the proposal and decision type before comparing it with your project.
Check planning requirements in North Hertfordshire, or read about permitted development in North Hertfordshire. An approval rate does not decide which route your property qualifies for.
Example loft conversion and dormer decisions in North Hertfordshire
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.
Search North Hertfordshire's planning register using the references below. Descriptions may be shortened; read the complete proposal and decision notice.
| Reference | Year | Decision | Application |
|---|---|---|---|
| 25/00896/PNAA | 2025 | Approved | Enlargement of detached bungalow by the construction of an additional storey to result in an overall height of 7.66 metres. Greenbanks London Road St Ippolyts Hitchin Hertfordshire SG4 7NJ |
| 25/01983/FPH | 2025 | Refused | Insertion of 2 front dormer windows and 1 rear box dormer window in existing roofslopes to facilitate a loft conversion. 137 Mendip Way Great Ashby Stevenage Hertfordshire SG1 6GD |
| 25/02342/LDCP | 2025 | Approved | Rear box dormer 14 Purwell Lane Hitchin Hertfordshire SG4 0NE |
| 25/02633/LDCP | 2025 | Approved | Enlargement of rear dormer window to form box dormer. 22 Ickleford Road Hitchin Hertfordshire SG5 1TJ |
| 24/00100/FPH | 2024 | Refused | Erection of detached double garage, front porch, installation of dormer windows to existing north and south roofslopes and alterations to fenestration follow... New Cottage Ashwell Road Newnham Baldock Hertfordshire SG7 5JX |
| 24/00493/LDCP | 2024 | Refused | Insertion of rear box dormer including 2no Juliet balconies 14 Broadmead Hitchin Hertfordshire SG4 9LU |
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 North Hertfordshire
- Single-storey rear extension 80%, 350 decided
- Two-storey rear extension 35%, 95 decided
- Wraparound extension 40%, 15 decided
- Side extension 53%, 90 decided
- Rooflight 92%, 221 decided
- Outbuilding and garden room 70%, 79 decided
- Porch 89%, 35 decided
- Garage conversion 86%, 74 decided
- Basement 93%, 14 decided
- Window and door 91%, 270 decided