Better questions. Stronger evidence.
Guides to property data, market research and the decisions behind an investment.
How to find out who owns land or a building in England and Wales
Company, public body and overseas owners are in bulk registers you can query in one call. Individuals are not. Here is what each route can tell you.
Read the guide ↗PROPERTY RESEARCHUPRN vs postcode: what to key your property data on
A postcode names a group of addresses; a UPRN names one. If you are joining sales, energy certificates, council tax bands and listings, the choice.
Read the guide ↗PROPERTY RESEARCHLand Registry Price Paid Data, explained
Every registered sale in England and Wales since 1995 is public. What the file contains, what it leaves out, why the trailing months are always wrong.
Read the guide ↗PROPERTY RESEARCHHow to read a house price index without fooling yourself
A house price index is not an average price. Here is what a repeat-sales index measures, what the forecast tail means, why thin areas borrow the.
Read the guide ↗PROPERTY RESEARCHEPC F and G: what the rules mean for landlords, and how to find the stock
A privately rented home needs an EPC of E or better to be let, and the floor is set to rise. How the rules work, what the exemptions are, and how to.
Read the guide ↗PROPERTY RESEARCHWhat auction results tell you that portals cannot
A portal knows a property went to auction. The auction house knows what it made. Why achieved prices and sale rates are the most honest market signal.
Read the guide ↗PROPERTY RESEARCHProduce an area report in ten minutes with the Insights skill
One skill, one area name, one sourced report: indices, volumes, rents, live stock, agents and auctions for any UK district, against its neighbours.
Read the guide ↗PROPERTY RESEARCHPull a house price index into a spreadsheet with the REST API
One key, one free call, and the monthly index for any UK district or authority is in Excel or Sheets. The response marks which months are still forecast.
Read the guide ↗PROPERTY RESEARCHConnect your AI assistant to MarketCode and value a property
Ten minutes from nothing to a valuation with its comparables, in Claude, ChatGPT, Codex or Cursor. One URL, one sign-in, no API key. Every call here is free.
Read the guide ↗PROPERTY RESEARCHWhy an AVM is a prior, not a valuation
The structural limits of statistical valuation, and what comes next
Read the guide ↗PROPERTY RESEARCHAirbnb yield: estimating short-term rental income in the UK
Short-term lets promise higher returns, but estimating real income is harder than it looks. Here is how to do it properly.
Read the guide ↗PROPERTY RESEARCHHMO investment analysis for UK landlords
HMOs can deliver higher yields than standard buy-to-let, but only if the numbers work. Here is how to analyse an HMO investment properly.
Read the guide ↗PROPERTY RESEARCHUse Classes Order 2020: can you change a property's use?
The 2020 Use Classes Order changed how every building in England is categorised. Here is what it means for changing your property's use.
Read the guide ↗PROPERTY RESEARCHPermitted development: what you can build without permission
Permitted development lets you extend, convert, and change use without a full planning application. Here is what the rules actually allow.
Read the guide ↗PROPERTY RESEARCHHow to assess planning risk on a development site
Planning risk is the gap between what you want to build and what you are likely to get approved. Here is how to assess it systematically.
Read the guide ↗PROPERTY RESEARCHPlanning constraints to check before buying a development site
Before buying a development site, check six critical planning constraints. Here is what each one means and how to check them fast.
Read the guide ↗PROPERTY RESEARCHComparable evidence in property valuation
Comparable evidence is the foundation of every property valuation. Here is how to find, select, and adjust comps properly.
Read the guide ↗PROPERTY RESEARCHHow to run a development appraisal, step by step
A development appraisal tells you whether a scheme is financially viable before you commit capital. Here is how the residual method works.
Read the guide ↗PROPERTY RESEARCHGross development value: what it is and how to calculate it
GDV is the total revenue a development will generate once complete. Here is how to calculate it properly and avoid the most common mistakes.
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