Free tools and build-it-yourself engines for property investors.
Model a deal, size a development, check your MTD deadline — then, if you want to go further, take our full architecture specs and build your own automated deal-sourcing engine. Everything on this page is free.
Two engines you can build yourself.
Open technical specifications for the ambitious. Take the architecture, the data joins that matter, and the legal reality — then build on top of the PAM portal. Start with the setup checklist below.
Autonomous deal-sourcing engine
Source on- and off-market opportunities in a target area, enrich each with size, comps, tenure, EPC, planning and ownership, then model and rank a deal score — with a human at the offer stage. The moat is the appraisal engine, not the scraper.
Vacant-site detection
There is no open, address-level empty-homes API in England — so vacancy is a composite inference. Combine dormancy signals, absentee owners and temporal imagery change into a score, resolved on shortlisted titles only. This is the data-sources companion to the deal engine.
How to start a project — three free accounts, connected once.
Think of it like setting up a workshop before you build anything: somewhere for your plans, somewhere for your materials, somewhere to display the finished thing. Work top to bottom — each step needs the one before it. Then you just tell Claude what to build.
Model any deal in minutes.
Twelve calculators and AI reviewers built for UK investors — tax, yield, development and compliance. No sign-up, no paywall. Start with the three below.
MTD ITSA readiness checker
Postcode plus gross rental income tells you if and when you're mandated — £50k from April 2026, £30k from 2027, £20k from 2028 — with your quarterly deadlines and a personalised action list.
Open tool → Developer flagshipDevelopment appraisal & GDV
Land, build, finance and fees resolve into gross development value, profit on cost and GDV, and a residual land value. The full appraisal an investor runs before an offer.
Open tool → Powered by PAM AIAI tenancy agreement reviewer
Upload an AST and PAM flags unfair or non-compliant clauses in plain English — timely for the Renters' Rights Act era. See exactly what needs changing before you sign.
Open tool →Tax & compliance
4 toolsMTD ITSA readiness checker
When you're mandated, your quarterly deadlines, and a personalised action list.
Open tool →Section 24 interest calculator
Tax paid before vs after Section 24 — the real cost of the 20% mortgage-interest credit cap.
Open tool →Ltd Co vs personal comparator
Models incorporation including CGT/SDLT on transfer and ongoing CT vs income tax.
Open tool →CGT on disposal calculator
Gain, the reduced £3k annual allowance and current residential rates on a sale.
Open tool →Property performance
3 toolsRental yield calculator
Gross and net yield from price, rent and running costs. The entry-level model.
Open tool →BRRR / refinance calculator
Money-left-in and ROI after refinance for a buy-refurbish-refinance strategy.
Open tool →EPC upgrade cost estimator
Cost to reach EPC C ahead of MEES tightening — payback against rent uplift.
Open tool →Developer
3 toolsDevelopment appraisal / GDV
Land, build, finance and fees → GDV, profit on cost/GDV and residual land value.
Open tool →Bridging & development finance
Arrangement fees, rolled interest and exit fees on a short-term facility.
Open tool →SDLT calculator with reliefs
Includes the 5% additional-property surcharge, MDR, group relief and non-resident surcharge.
Open tool →AI-native tools
Powered by PAM AI · 2 toolsAI tenancy agreement reviewer
Paste or upload an AST and get flagged unfair or non-compliant clauses in plain English — built for the Renters' Rights Act era, when what's enforceable is shifting.
Open tool →Renters' Rights Act impact summariser
Describe your portfolio and get a plain-English brief on exactly what the Act changes for you — periodic tenancies, grounds for possession, and where you need to act.
Open tool →Model the deal here. Manage it in PAM.
These tools size the opportunity. PAM handles what comes after — maintenance triage, rent collection, compliance and MTD filing across your whole portfolio.