BCIS Q2 2026 band
- Low: 2,650 £/sqm
- Mid: 3,050 £/sqm
- High: 3,700 £/sqm
- Regional index (UK = 100): 119
GDV working band
Resale GDV 620 to 1200 £/sqft (low to high). Mid 780 £/sqft. Sense-check against current Land Registry Price Paid postcode-area aggregates before committing a bid.
Outer London BCIS; Inner London adds a further 5 to 12 percent on prime sites.
Mayoral CIL2 zones
- Zone 1: £96.97/sqm for permissions granted in 2026 (£80 base). Camden, City of London, Westminster, Hammersmith & Fulham, Islington, Kensington & Chelsea, Richmond, Wandsworth.
- Zone 2: £72.73/sqm (£60 base). Hackney, Lewisham, Southwark, Tower Hamlets, Lambeth, Ealing, Brent and most other inner-outer boroughs.
- Zone 3: £30.30/sqm (£25 base). Barking & Dagenham, Bexley, Croydon, Greenwich, Havering, Newham, Sutton.
- Rates index annually by the RICS CIL Index (Ip 400 / Ic 330 in 2026). Borough CIL stacks on top; always check the borough's adopted charging schedule.
Which London boroughs publish viability TPDPL
- Camden, Hackney, Lewisham, Southwark, Tower Hamlets and Wandsworth publish tariff schedules and small-sites thresholds.
- See the borough deep-dives for working numbers.
Open the workbench with these rates
Inputs
MAX LAND BID£1,685,450At 20% profit on cost, 9 units, 950 sqft GIA each.
MARGINAL
GDV£5,668,650
Build cost£2,422,678
Prof fees£290,721
s106/CIL/BNG£108,000
Contingency£211,605
Finance interest£216,102
Target profit£649,821
Total costs (excl land)£3,249,106
Senior debt @ LTGDV£3,684,623
PoC14.9%
PoGDV13.0%
LTC74.7%
Sensitivity (PoC %)
Build -5%Build +5%Build +10%Build +15%Build +20%
GDV -15%16%17%18%19%19%
GDV -10%16%17%17%18%18%
GDV -5%15%16%17%17%18%
GDV 0%14%15%16%16%17%
GDV +5%14%15%15%16%16%
Cells show profit-on-cost percentage at each GDV stress / build-cost shock pair. Cells below your target PoC turn amber-warm; cells below 10 percent abort.