Side extension planning approval rate in North Hertfordshire
53% of 90 decided side extension 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.
53%
Approval rate, all years, from 90 decided
90
decided side extension applications in North Hertfordshire: 48 approved, 42 refused
50%
Recent rate, decided since 2022, from 26 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 Withdrawn applications are excluded.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 2026. 0 of 90 decided records have no year recorded. Coverage may have gaps within the date range.
26 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 side extension 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 |
|---|---|---|---|
| 25/02863/FPH | 2026 | Refused | Single storey side extension. 24 Stane Street Baldock Hertfordshire SG7 6TS |
| 25/02958/FPH | 2026 | Refused | Existing roof altered from hip to gable roof extension including rear dormer with glass balcony balustrade to facilitate loft conversion to habitable space.... 3 Westfield Lane Hitchin Hertfordshire SG5 2HE |
| 24/02747/LBC | 2025 | Approved | Single storey side extension to provide a 1-bed ancillary annexe following demolition of existing detached timber shed (as a variation of planning permission... The Old Bakery Chapel Street Hinxworth Baldock Hertfordshire SG7 5HN |
| 25/00703/LDCP | 2025 | Refused | Single storey side extension and single storey rear extension following demolition of existing rear extensions 104a Bearton Road Hitchin Hertfordshire SG5 1UF |
| 25/01067/LDCP | 2025 | Approved | Single storey side extension following removal of existing garage 5 West Hill Hitchin Hertfordshire SG5 2HZ |
| 25/01897/LDCP | 2025 | Approved | Single storey side extension 2 Chime Dell Whitwell Hitchin Hertfordshire SG4 8BS |
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
- Loft conversion and dormer 77%, 95 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