For UK Property Investors
Stress-Test Every Property Before You Buy It
UPA reads any property listing and runs it through automatic sanity checks and downside scenarios. See your profit at 100%, 90% and 85% of end value - before you commit a penny. The deal that looks great at 100% might be a disaster at 90%.
Stress-Test My First Deal Free48 hours of free deal analyses · No card · Installs in ~30 seconds
Runs right on top of the listings you already use:
No new workflow. No exporting to a spreadsheet.
The Best Case Is Easy. The Downside Is What Protects You.
Every spreadsheet shows you the deal at the expected end value. The profit looks great. So you offer, you complete, you refurb - and only later, when the market shifts or the valuation comes in light, do you discover the deal that made £35k at 100% makes £4k at 90% and loses money at 85%.
That's how investors get caught. Not because they can't calculate profit, but because they only ever model the happy case - and never ask what happens when the numbers don't go to plan.
Your spreadsheet shows you the best case. It doesn't show you the case that actually happens.
From Listing To Stress Test In Under Two Minutes
Open any listing
Find a property on Rightmove, Zoopla, OnTheMarket or any property site.
Click Analyse Deal
UPA reads the listing and runs it through automatic sanity checks.
Read the downside
Profit at 100%, 90% and 85% of end value - all on the page.
This Is The Whole Point
See Your Deal At 100%, 90% And 85% Of End Value. In One Click.
Any tool can tell you a deal makes £34,993 at the expected sale price. The question that actually protects your money is: what happens when it doesn't sell for that?
With one click, UPA runs your deal through automatic sanity checks and downside scenarios, so you see the profit at 100%, 90% and 85% of your end value before you commit a penny.
Same property. Which number are you underwriting to?
That's the difference between a deal that looks good and one you actually understand.
Stress-Test My First Deal Free↑ At 90% of end value, profit drops to £4,153. Nearly gone.
Every Cost. Every Comparable. Every Scenario. In One Place.
The stress test is only as trustworthy as what feeds it. So UPA models the whole deal - costs, comparables and exit - then stress-tests it from every angle.
Every cost, not just the happy ones
Deposit, refurb, stamp duty, legals, bridging interest, JV money, selling fees - totalled into the real cash you need in, and the profit that's left.
Comparable evidence, gathered for you
Nearby sold prices and £/sqm, scored for relevance, so your end value - and therefore your stress test - rests on evidence.
Sanity checks, automatic
UPA flags assumptions that look optimistic - high end values, low refurb costs, tight margins - before you even get to the stress test.
What UPA Does On Every Stress Test
Profit at 100%, 90% and 85%. Your deal stress-tested at three end value scenarios.
Automatic sanity checks. Flags optimistic assumptions before you even start.
Full cost modelling. SDLT, legals, finance, bridging, refurb, JV money.
Comparable sales & rents. Evidence for your end value, not a guess.
Exit comparison. Flip vs refinance - which strategy survives the stress test?
Saved deals & exports. Keep a record of every stress test you run.
It's not a replacement for professional due diligence. It's the fastest way to decide whether the deal survives the downside.
Investors Are Stress-Testing Deals In Seconds, Not Evenings
UPA is live with a founding cohort of UK property investors who are stress-testing deals in seconds, not evenings.
Real testimonials from founding members coming soon. If you're an early user who caught a bad downside with UPA, we'd love to hear your story.
We Built This Because We Only Modelled The Happy Case Too
We're UK developers and investors. We were modelling deals at the expected end value - the best case - and we still nearly committed to deals where the profit vanished at 90% and went negative at 85%.
So we built the tool we wished existed: open a listing, click once, and see the stress test, the sanity checks and the downside in one place.
Now we don't offer on anything without stress-testing it first. Neither should you.
Keep Stress-Testing Every Deal. Founding Investor Price.
Your first 48 hours are free. When you're ready for unlimited, lock in the founding price.
UPA Investor Pass
Unlimited stress tests for 12 months.
Total value £400+
£97 for 12 months
Founding Investor Price, locked while your membership stays active.
One payment for 12 months' access. It does not auto-charge. We'll remind you before it expires.
Founding price is for the first cohort of members. It rises for later ones.
The Risk Is Entirely On Us
Analyse 10 real deals in your first 14 days. If UPA doesn't catch at least one number you'd have gotten wrong on your own, email us for a full refund and keep your access anyway. The only way you lose is by guessing on your next deal without it.
Frequently Asked Questions
None. You get 48 hours of complete stress testing, every feature, no card. If it earns its place, you upgrade.
Your Next Deal Looks Great At 100%. What Happens At 90%? Find Out In 60 Seconds.
Install free, stress-test real deals for 48 hours, and see the profit at 100%, 90% and 85% - before you commit.
Stress-Test My First Deal Free48 hours free · No card · ~30 seconds