AI Rental Yield Deal Analyser (Pre-Purchase BTL)
Paste a Rightmove Link, Get a Verdict
Executive Summary
In a nutshell
A UK-first AI deal analyser for pre-purchase buy-to-let decisions. Paste any Rightmove / Zoopla URL → the tool scrapes listing data, applies local rent comps, stress-tests against BTL stress-rate rules (5.5% stress, 125-145% ICR), models Renters' Rights Act impact and EPC-upgrade costs, and outputs a plain-English "should I buy this, yes/no" verdict — plus seeds an MTD-ready property ledger from day one. Timed for the triple catalyst: Renters' Rights Act effective 1 May 2026, MTD for Income Tax live 6 April 2026, and a rate environment that has pulled 200 BTL products from the market in a single month.
The Story
Meet the user
Hannah is a pharmacist in Leeds. She's mid-30s, has one buy-to-let already — a small flat in Headingley her late aunt left her — and she's spent the last six months squirrelling away for a second. She has £62k sat in a cash ISA and a bookmarked Rightmove tab with a two-bed terrace in Harehills. On paper it looks decent: £180k asking, hoping for £1,100 pcm. She's opened her yield spreadsheet, copied the numbers, and now she's staring at it. Is 7.3% gross good? The BTL mortgage calculator on her phone says the 5-year fix she's looking at is 5.75% with a 2% product fee. The EPC is D and she's read something about rules changing. The estate agent texted her again this afternoon. It's Thursday night, her husband's asleep, and she genuinely doesn't know whether to put an offer in tomorrow or walk away.
Her accountant charges £90 an hour and won't look at a deal in progress. The podcasts she listens to keep saying "do your numbers" but the numbers are what she's stuck on. She ends up on a mortgage-broker forum at 1am and somebody drops a link to a new tool. She pastes the Rightmove URL. Eighteen seconds later she has a plain-English verdict: "Marginal at current rates. Breaks even only if void periods stay under 4 weeks and EPC upgrade stays under £3,800. Similar Harehills flats rented for £950-£1,150 last quarter — your £1,100 is fair but not aggressive. Renters' Rights Act increases void risk. Consider revising offer to £168k."
Scores
How does this idea stack up?
7.1/10
UK proptech segment ~£120m addressable; 18,000+/mo head-term volume; RRA reshaping the market pushes amateur landlords toward decision tooling.
BTL investors actively paralysed — 200 products pulled in March, portfolios shrinking from 7.3 to 6.6, "management-sensitive" valuations — real financial risk on every decision.
Standard web stack + LLM + scraping (with ToS navigation); UK mortgage rate data licensable via feeds; EPC register is public.
RRA effective 1 May 2026 (days away), MTD for IT live 6 April 2026, BTL rate volatility — three independent tailwinds compounding.
BTL decisions are perpetual but the AI-verdict wedge is imitable — Lendlord/PropertyData could bolt it on within 12 months.
Standard build but scraping ToS, rate-data licensing, and accuracy accountability raise the bar — 8-10 weeks for a trusted MVP.
Strongest
Timing
The 1 May 2026 Renters' Rights Act launch plus 6 April MTD go-live is a once-in-a-generation double catalyst for UK landlord-facing tooling. Rate volatility compounds it.
Watch out
Durability
Lendlord is already a UK competitor at £2.99/mo and could add an AI-verdict layer within a year. The moat has to be RRA + MTD workflow depth, not AI generically.
Pain Point
The problem
“Lettings market 'holding its breath' until Renters Rights Act... over 200 BTL products pulled in March alone... valuations are increasingly 'management-sensitive,' with the Investment Value being squeezed by the perceived difficulty of achieving vacant possession.”
— Landlord Today + commentary from UK BTL finance houses, April 2026
Amateur landlords face their most uncertain moment in a decade. BTL two-year fixes sit at ~5.44%, five-year at ~5.75%. Stress tests run at 5.5%, with an ICR of 125% (limited company) or 145% (personal). The maths is tight and sensitive to small changes in rent assumption.
Simultaneously, the Renters' Rights Act effective 1 May 2026 ends Section 21, ends fixed-term ASTs, and reforms the rent review process. Every existing deal needs re-modelling. MTD for Income Tax goes live 6 April 2026 for landlords above £50k — record-keeping must be digital from day one, so buying without a ledger plan is buying future admin debt.
The worst part is decision paralysis. Existing calculator tools (Lendlord, PropertyData, Zoopla yield widgets) give you numbers. What a nervous buyer needs is a verdict — "should I buy this at this price, yes or no, and why". Community evidence from r/UKPersonalFinance, r/HousingUK, Property118 and the UK BTL Facebook groups is full of "am I mad to buy this?" posts. The typical respondent is either another amateur with confidence bias or a pro pushing a service. There's no trusted third-party verdict layer.
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