Nine scheme-type presets. Each preset loads the workbench with default unit count, GIA, BCIS build cost, professional fees, contingency, finance and target profit-on-cost. Adjust from there.
Medium-rise blocks or terraces. BCIS general new-build rate; CIL and BNG itemised per unit.
NPPF Dec-2025 small-sites threshold. BNG exemption to 1 sept 2026 transition; CIL minor-development relief.
Class O, MA or G prior-approval conversion. NDSS now applies; daylight or BRE often kills schemes pre-residual.
Class O PDR or full planning conversion. BCIS conversion rate is roughly 70 to 80 percent of new build.
Class Q PDR up to 10 dwellings, 150sqm cap. Unknown-structure conversions justify 15 percent contingency.
Single dwelling self-build with HMRC VAT reclaim on materials. Target return lower than commercial development.
Ground-floor retail or office capitalised on NOI/yield, residential units priced on £/sqft.
HMO converts a single C3 dwelling to sui generis or C4. GDV sized as NOI capitalised at 7 to 9 percent yield.
BTR GDV is NOI / net initial yield. Op-cost ratio 25 to 30 percent of gross rent; yield 4.25 to 5.5 percent.