Community Infrastructure Levy in Bromley
Residential CIL in Bromley is charged per m² of new gross internal area under the council's charging schedule (effective 2021-06-15). Mayoral CIL 2 Band 2 (£72.73/m²) is charged on top by the Greater London Authority. Extensions under 100 m² that create no new dwelling are not liable (reg 42); owner-occupiers can claim the self-build, annex or extension exemption — but only before work starts.
| Zone | Adopted rate | Indexed rate | Applied |
|---|---|---|---|
| Borough-wideResidential development excluding residential development which delivers additional care and support services. Applies across the whole borough.Source: Bromley charging schedule · verified 2026-09-18 | £100.00 | £120.12 (2026) | £120.12/m² |
Source: charging schedule · council CIL page · verified 2026-09-18. Charging schedule approved by Council 19 April 2021, effective for permissions on/after 15 June 2021; base RICS CIL Index 333. Indexed residential rates (council 'Calculate CIL costs' page): 2023 £106.61 (index 355), 2024 £114.41 (381), 2025 £117.42 (391), 2026 £120.12 (400). Large-scale purpose-built shared living (50+ units) and purpose-built student accommodation £150 (2026 £180.18); retail warehousing >1000sqm and supermarkets/foodstores >280sqm £100; other development £0. Instalment policy not stated on pages fetched (see LBB CIL Operational Guidance, file/700). Note: bromley.gov.uk returned 403 for WebFetch on some pages; the calculator page was retrieved directly.
| Scheme | Liability | Exemption | At stake if filed wrong |
|---|---|---|---|
| Rear extension, 120 m², owner-occupier | £23,142 | Form 9 | £23,142 |
| Garden annex, 60 m², for a relative | £11,571 | Form 8 | £11,571 |
| New self-build house, 180 m² | £34,713 | Form 7 | £34,713 |
| Small developer, 3 flats, 240 m² (no exemption) | £46,284 | none | £46,284 |
Indicative — the council's Liability Notice is definitive. Under 100 m² and no new dwelling is not liable at all (reg 42).
Free liability range and exemption check. The £29 report gives the filing order for Forms 1, 2, 6 and 7/8/9 with dates and the surcharge at each step.
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