Basement planning approval rate in Cornwall
100% of 11 decided basement applications in Cornwall 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.
100%
Approval rate, all years, from 11 decided
11
decided basement applications in Cornwall: 11 approved, 0 refused
Unknown
Recent rate, decided since 2022: only 6 decided, fewer than 8
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 Withdrawn applications are excluded.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 2016 to 2025. 0 of 11 decided records have no year recorded. Coverage may have gaps within the date range.
6 decided records are dated 2022 or later; too few to display a recent rate. This is an archive count, not a measure of all current council activity.
Small archive sample: only 11 decided records support this figure. A small number of different outcomes can substantially change the percentage.
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 Cornwall, or read about permitted development in Cornwall. An approval rate does not decide which route your property qualifies for.
Example basement decisions in Cornwall
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.
Visit Cornwall's official website to find its planning register and search the references below. Descriptions may be shortened.
| Reference | Year | Decision | Application |
|---|---|---|---|
| PA24/08769 | 2025 | Approved | Retention and installation of cast iron railings, granite setts and gates to secure the cellar area along with the renovation and re-roofing of the nearby bu... Beerwolf Books 3 - 4 Bells Court Market Street Falmouth Cornwall TR11 3AZ |
| PA25/01087 | 2025 | Approved | Replacement windows & minor internal alterations including new stairs down to Basement. 5 The Warren St Ives Cornwall TR26 2EA |
| PA25/01088 | 2025 | Approved | Listed Building consent to replace windows in addition to minor internal alterations including new Stair down to Basement. 5 The Warren St Ives Cornwall TR26 2EA |
| PA23/06358 | 2023 | Approved | Proposed alterations including reroofing/lime washing external walls/replacing windows and door together with installing new concrete floor to basement. Jews Cottage Lansallos Street Polperro Looe Cornwall PL13 2QU |
| PA23/06359 | 2023 | Approved | Listed Building Consent for proposed alterations including reroofing/lime washing external walls/replacing windows and door together with installing new conc... Jews Cottage Lansallos Street Polperro Looe Cornwall PL13 2QU |
| PA23/07810 | 2023 | Approved | Listed building consent to make two 100mm holes in exterior walls to allow for the installation of extraction fans for the two bathrooms of the property. One... 42 Lemon Street Truro Cornwall TR1 2NS |
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 Cornwall
- Single-storey rear extension 97%, 146 decided
- Two-storey rear extension 98%, 45 decided
- Wraparound extension 100%, 9 decided
- Side extension 98%, 57 decided
- Loft conversion and dormer 97%, 97 decided
- Rooflight 98%, 52 decided
- Outbuilding and garden room 95%, 125 decided
- Porch 100%, 63 decided
- Garage conversion 94%, 47 decided
- Window and door 96%, 187 decided