Lender-ready appraisals2026
Development appraisals for UK residential sites
Enter an address. TBN Stacked checks the planning, pulls the sold prices nearby, prices the build and the finance, and hands you a full appraisal you can take to a lender.
Land at Kingham, Oxfordshire
A bungalow plot with consent for one detached four-bedroom house of about 3,186 sq ft
At the £700,000 guide price the scheme makes £924 (0.05% on GDV). To make 20% on GDV, the most a developer could pay for the plot is £349,935.
Read the full report →What’s in every report
Not a spreadsheet you fill in yourself. TBN Stacked does the research, shows where every number came from, and tells you the most you should pay.
We read the planning history for the address and appraise the scheme it supports, or the one you tell us about.
Recent comparable sales set the end values. Each one is listed with its price and date, so you can check it.
Regional build rates, fees and contingency, with two development finance options side by side.
A sensitivity grid shows what a fall in prices or a rise in costs does to profit, and a risk register lists what to check next.
How it works
Three steps, and the second one is ours.
Add what's planned if you know it: the homes, their sizes, the asking price. If you don't, we work it out from the planning history.
Planning, comparable sales, build costs and finance, calculated the same way every time. Most reports are ready in minutes.
Open the PDF, follow every figure back to its source, and correct anything in Review. Revising a report never uses another one.
A real report, page by page
This is a real TBN Stacked report for a plot in Kingham, Oxfordshire, with the address taken out. Every figure is as the report produced it.
No black box
A figure you can’t trace is a figure you can’t take to a lender. Each report separates what you told us from what we found, what we calculated and what still needs checking.
See how the sample does it →Pricing
Run a real site before you spend a penny. Plans for regular use are announced at launch, and you choose one only when you need more reports.
Fresh research on a property uses one report. Opening it, downloading it and revising its figures never use another.
Questions
An address. If you know what's planned, the asking price or the sizes of the homes, add them and the report uses your figures instead of ours.
Usually a few minutes. You can close the page while it runs: the finished report waits on your dashboard.
Nothing. Every new account gets one free report, and you don't need a card to start.
Yes. Review lets you correct any figure and rebuild the PDF straight away. Opening, downloading and revising a report never uses another one.
Gross development value: what the finished homes should sell for, added together. It is a sales estimate, not profit. Profit is what's left after land, build, fees and finance.
Developers sizing up a site, investors checking an asking price, and finance brokers who want a lender-ready view of a scheme before the first call.
No. It's an indicative appraisal from public sources and the information you give us. It is not a formal RICS valuation, a lending decision or financial advice.
Not ready yet?
No site to run today? Leave your details and we’ll email you when plans and new features arrive. Nothing else.
TBN Stacked
One address. One report. Free to try.
