GDV.calculator

Property Development Worked Examples

Five named scenarios end-to-end. Each lays the ledger out line by line: GDV, build cost, professional fees, s106 / CIL / BNG, contingency, finance, target profit, residual land bid. Read for the maths, not the inspiration.

3-unit terrace, Leeds LS6

975k GDV. Yorkshire BCIS Q2-2026. 20 percent PoC at residual.

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9-unit block, Manchester M4

2.34m GDV. NW BCIS baseline. LTGDV 65 percent senior debt.

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Office to 12 flats, Croydon

Class O PDR. 4.2m GDV. London Outer BCIS conversion.

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Single self-build, Cornwall

180 sqm. 625k GDV. VAT reclaim path.

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Mixed-use shop + 3 flats, Brighton

Retail capitalised at 6.5 percent yield + 3 x 350k flats.

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Planning Practice Guidance: Viability· Last updated 16 December 2025; suggests 15-20% of GDV developer return (paragraph 019)Appraisal model reviewed by Oliver Wakefield-Smith (data integrity) with chartered-surveyor (MRICS) and CTA tax review. No affiliate links.