30+
Free calculators
10
Property categories
10K+
Monthly users
4.9★
Average rating
Every calculation
you need.
From development appraisals to lease extensions, our calculators cover every aspect of UK property finance.
Development Finance
GDV, build costs, development appraisals, and exit strategies
HMO & Conversion
Viability, licensing, fire safety, and Article 4 analysis
Bridging & Specialty
Bridging loans, auction finance, and refurb bridges
Leasehold & Title
Lease extensions, marriage value, and enfranchisement
Portfolio & Tax
DSCR, ICR, BRRR, Section 24, and portfolio optimisation
Valuation & Analysis
Rental yields, cap rates, and comparable analysis
Three steps to
clarity.
Pick a calculator
Browse by category or search. GDV, yields, bridging, lease extensions—we've got it.
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More than numbers.
Smarter decisions.
Every calculator includes AI-powered analysis. Get instant insights on deal viability, risk factors, and recommendations.
AI Deal Analysis
Instant insights on every calculation
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Deal Verdict
Strong Buy
7.2% yield exceeds area average of 5.8%
Gross Yield
7.2%
Cash Flow
+£287/mo
Trusted by UK
property professionals.
“Finally, a calculator that understands UK property. The lease extension calculator alone saved me hours of back-and-forth with solicitors.”
James H.
Property Developer, London
“I use the development appraisal calculator for every deal now. The AI insights are surprisingly accurate.”
Sarah M.
Portfolio Landlord, Manchester
“The BRRR calculator helped me understand if a deal would actually work before I committed. Essential tool.”
David P.
HMO Investor, Birmingham
Built for property professionals across the UK