GDV and CIL working numbers
- GDV: 950 to 1550 £/sqft
- Mid GDV: 1180 £/sqft
- Borough CIL: 535 £/sqm
- Mayoral CIL2: Z1
Camden CIL Zone A residential (Q2-2026 rate). Mayoral CIL2 adds £80/sqm in Zone 1.
Local context
- NW3 covers Hampstead, Belsize Park and Gospel Oak. Period stock dominates; HMO and short-let policy restrictive.
- Camden CIL Zone A (residential) plus Mayoral CIL2 Zone 1 £80/sqm.
- Conservation area constraints push contingency to 10 to 12 percent on conversion.
- Camden published viability TPDPL; expect challenge on 17.5 percent PoGDV submissions.
Open the workbench
Inputs
MAX LAND BID£4,152,568At 20% profit on cost, 9 units, 950 sqft GIA each.
MARGINAL
GDV£8,575,650
Build cost£2,422,678
Prof fees£290,721
s106/CIL/BNG£337,050
Contingency£228,784
Finance interest£233,645
Target profit£702,576
Total costs (excl land)£3,512,878
Senior debt @ LTGDV£5,574,173
PoC11.9%
PoGDV10.6%
LTC72.7%
Sensitivity (PoC %)
Build -5%Build +5%Build +10%Build +15%Build +20%
GDV -15%13%14%14%14%15%
GDV -10%12%13%13%14%14%
GDV -5%12%13%13%13%14%
GDV 0%12%12%13%13%13%
GDV +5%11%12%12%12%13%
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.