For UK Buy-To-Let Investors
Buy-To-Let Numbers Before You Buy
UPA reads any property listing and models it as a buy-to-let - rental income, monthly cashflow, ROI and comparable rents. Know if the yield actually works before you commit your deposit, not after the tenant moves in.
Analyse My First BTL 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.
A Buy-To-Let Is Only As Good As Its Yield
The listing looks like a solid buy-to-let. The asking price is reasonable, the area seems popular. So you buy, you let, and only later - when the achievable rent comes in £150 below your assumption and the service charges eat the margin - do you find the yield is 3.2%, not 5.5%.
That's how buy-to-let investors end up with negative cashflow. Not because they're careless, but because they're guessing at the achievable rent, the true costs, and the real yield - across five tabs, under pressure, before someone else offers.
Your spreadsheet calculates the yield. It doesn't challenge the rental assumption behind it.
From Listing To BTL Verdict 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 models the rental income, costs, cashflow and yield.
Read the verdict
Monthly cashflow, ROI, yield and comparable rents - all on the page.
The Part Other BTL Calculators Skip
Most Calculators Show You Cashflow At Full Rent. UPA Shows You What Happens When It Drops.
Any tool can tell you a buy-to-let cashflows £280 a month at the expected rent. The question that actually protects your money is: what happens when the rent comes in lower, or the property sits void?
With one click, UPA runs your buy-to-let through automatic sanity checks and downside scenarios, so you see the cashflow and yield at 100%, 90% and 85% of your rental income before you commit a penny.
Same property. Which number are you underwriting to?
That's the difference between a buy-to-let that pays you and one that costs you.
Stress-Test My First BTL Free
↑ At 90% of rent, monthly cashflow drops to £95. Nearly break-even.
Every Cost. Every Comparable Rent. Every Scenario.
The buy-to-let is only as trustworthy as what feeds it. So UPA models the whole deal - purchase, rental income, costs and cashflow - not just the headline yield.
Rental income, modelled properly
See your monthly rental income, mortgage payment, service charges and ground rent - totalled into the real monthly cashflow.
Comparable rents, gathered for you
Nearby rental evidence and £/sqm, scored for relevance, so your rental income rests on evidence, not one optimistic estimate.
Every cost, not just the happy ones
Deposit, stamp duty, legals, mortgage fees, SDLT surcharge, service charges, ground rent - totalled into the real cash you need in.
What UPA Does On Every Buy-To-Let
Monthly cashflow. Rental income minus mortgage and all costs - the real number.
Yield & ROI. Gross yield, net yield and return on cash invested.
Comparable rents. Evidence for your rental income, not a guess.
Full cost modelling. SDLT, SDLT surcharge, legals, mortgage fees, service charges.
Downside stress tests. Cashflow at 100%, 90% and 85% of rental income.
Saved deals & exports. Keep a record of every buy-to-let you screen.
It's not a replacement for professional due diligence or mortgage advice. It's the fastest way to decide whether the yield is real.
BTL Investors Are Screening Deals In Seconds, Not Evenings
UPA is live with a founding cohort of UK buy-to-let investors who are screening deals in seconds, not evenings.
Real testimonials from founding members coming soon. If you're an early user who caught a bad yield with UPA, we'd love to hear your story.
We Built This Because We Were Guessing On Rents Too
We're UK developers and investors. We were modelling buy-to-lets on optimistic rents - and we still nearly committed to deals where the achievable rent was £150 below our assumption and the cashflow was negative.
So we built the tool we wished existed: open a listing, click once, and see the rental income, the cashflow and the downside in one place.
Now we don't offer on a buy-to-let without stress-testing the rent first. Neither should you.
Keep Analysing Every Buy-To-Let. Founding Investor Price.
Your first 48 hours are free. When you're ready for unlimited, lock in the founding price.
UPA Investor Pass
Unlimited buy-to-let analysis 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 buy-to-let analysis, every feature, no card. If it earns its place, you upgrade.
Your Next Buy-To-Let Is On A Listing Right Now. Know The Yield Before You Buy.
Install free, analyse real buy-to-let deals for 48 hours, and see the rental income, the cashflow and the downside - before you commit your deposit.
Analyse My First BTL Free48 hours free · No card · ~30 seconds