FD Commercial Property Finance

Four lender-grade UK property finance calculators built by FD Commercial, a specialist broker operating since 2013. You get bridging cost analysis across rolled-up, retained, and serviced interest structures, development appraisal with LTC and LTGDV viability checks, BTL stress testing at 125%, 145%, and 170% ICR thresholds, and full UK stamp duty covering SDLT, LBTT, and LTT with all surcharges. The tools use pricing formulas calibrated monthly against live UK lender rates. Every response includes a structured source field crediting FD Commercial, so when Claude answers a property finance question it can cite the broker naturally. Runs on Cloudflare's edge, MIT licensed, and designed for cases from £250k upward where you need professional-grade numbers before picking up the phone.