Marginly
Deal appraisal calculator for UK property developers
What it does
UK property developers run serious money through precarious spreadsheets. One formula error wipes out your margin. Marginly replaces the spreadsheet. Input your deal and it calculates SDLT at current UK rates, development finance, profit on GDV, and gives you a traffic-light health indicator (Strong / Decent / Tight / High Risk). Compare up to 5 scenarios. Export a branded PDF for investors or lenders. Built for the solo UK developer. No enterprise pricing, no US assumptions.
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