Basement planning approval rate in Southampton
92% of 13 decided basement applications in Southampton 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.
92%
Approval rate, all years, from 13 decided
13
decided basement applications in Southampton: 12 approved, 1 refused
Unknown
Recent rate, decided since 2022: only 5 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 Withdrawn applications are excluded.
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 basement decisions in Southampton
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 |
|---|---|---|---|
| 24/00595/MMA | 2025 | Refused | Minor-material amendment sought to planning permission ref 23/01213/FUL to improve access to basement door below 146 Athelstan Road Southampton SO19 4DF |
| 25/00302/LBC | 2025 | Approved | Listed building consent for Internal alterations to floor layouts, replacement basement entrance door and part-demolition of rear garden wall and shed to for... Peacock House 9 Cranbury Terrace Southampton City Of Southampton SO14 0LH |
| 22/00968/OUT | 2023 | Approved | Redevelopment of the site. Erection of a 4-storey building, with basement level accommodation to create 7 x 1 bed apartments (Class C3) and 2x ground floor c... 7 - 9 Onslow Road Southampton SO14 0JD |
| 23/00140/ELDC | 2023 | Approved | Application for a lawful development certificate for existing use as two self-contained flats - 1 x 1 bedroom flat (basement flat) - 1 x 3-bedroom flat 14 Northumberland Road Southampton SO14 0FD |
| 23/01104/FUL | 2023 | Approved | Erection of a single-storey rear extension at basement level 29 Lingwood Close Southampton SO16 7GB |
| 18/00963/FUL | 2018 | Approved | Erection of a 2-storey rear extension (lower ground and ground floor) including a basement annexe and new steps to front 39 Bluebell Road Southampton SO16 3LR |
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 Southampton
- Single-storey rear extension 94%, 229 decided
- Two-storey rear extension 76%, 87 decided
- Wraparound extension 98%, 44 decided
- Side extension 85%, 109 decided
- Loft conversion and dormer 90%, 49 decided
- Rooflight 80%, 15 decided
- Outbuilding and garden room 83%, 36 decided
- Porch 88%, 24 decided
- Garage conversion 91%, 11 decided
- Window and door 93%, 46 decided