Property Development Done Right
Find undervalued and off-market opportunities, run due diligence, then underwrite the deal with tools built from real renovation projects.
What you can do
Find deals, check risk, run the numbers
Free UK property tools for landlords and developers — from distressed ownership and area risk to comps, yield and renovation budgets.
Due diligence & risk
Flood, crime, EPC, listed buildings and ground risk before you commit.
See tools →Location & amenities
Schools, transport, retail, broadband and mobile coverage around a postcode.
See tools →Underwrite the deal
Sold comps, ownership lookups, deal analyzer and renovation calculator.
See tools →
Start with high-signal tools
The lookups and calculators we use first when hunting quieter sellers and underwriting a renovation.
Distressed Properties
Company-owned titles in liquidation, dissolved or administration.
Open toolSold Prices
Nearby comps with averages and recent sales.
Open toolDeal Analyzer
ROI, cash flow and yield before you buy.
Open toolOverseas Ownership
Titles held by overseas companies — often quieter sellers.
Open toolFlood Lookup
Live flood warnings and mapped flood areas near a postcode.
Open toolRenovation Calculator
Room-by-room renovation budget with contingency.
Open toolBuilt from site days
Tools from real renovations, not theory
Untagged is run by hands-on developers. Every lookup and calculator is shaped by measuring, costing and delivering rental stock — so you can research faster and decide with clearer numbers.
Free to start
Lookups share a daily quota. Create a free account for higher limits and fuller ownership results.
Open data
Land Registry, Companies House, Ofcom, police and more — surfaced for property decisions.
Knowledge base
Guides and checklists from live projects when you need more than a calculator.
Browse knowledge →Portfolio tracking
Track purchases, rents and valuations once you’re signed in.
Create free account →Ready to find your next deal?
Jump into free tools now, or create an account for higher daily search limits and portfolio tracking.