Basement planning approval rate in City of London
99% of 378 decided basement applications in City of London 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.
99%
Approval rate, all years, from 378 decided
378
decided basement applications in City of London: 376 approved, 2 refused
98%
Recent rate, decided since 2022, from 94 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 Withdrawn applications are excluded.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 basement decisions in City of London
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 |
|---|---|---|---|
| 25/00848/FULL | 2026 | Approved | Refurbishment and alterations to office building including:
i) Provision of access to terraces on the 4th floor and alteration and extension to existing roof... Unilever House |
| 25/00849/LBC | 2026 | Approved | Refurbishment and alterations to office building including:
i) Provision of access to terraces on the 4th floor and alteration and extension to existing roof... Unilever House |
| 25/01245/FULL | 2026 | Approved | Refurbishment and alterations to the existing building including relocation of the southern offices entrance, new partial facade treatment at ground floor le... London Stock Exchange |
| 25/01273/LBC | 2026 | Approved | Internal and external alterations including (i) replacement HVAC units to first floor roof (ii) replacement retractable awning at ground floor to Ball Court... Simpsons Tavern 38 And A Half |
| 25/00506/FULL | 2025 | Refused | Retention of air handling units (AHUs) with new acoustic louvred enclosures at basement level. Offices |
| 20/00848/FULEIA | 2022 | Refused | Demolition of existing building and construction of a new building comprising 2 basement levels (plus 2 mezzanines) and ground floor plus 48 upper storeys (1... Bury House |
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 City of London
- Single-storey rear extension 100%, 10 decided
- Two-storey rear extension unknown, 1 decided
- Wraparound extension unknown, 1 decided
- Side extension unknown, 0 decided
- Loft conversion and dormer 100%, 67 decided
- Rooflight 100%, 54 decided
- Outbuilding and garden room unknown, 4 decided
- Porch 98%, 44 decided
- Garage conversion unknown, 2 decided
- Window and door 100%, 691 decided