Six investment strategies.
Zero spreadsheets.
Enter the postcode, price and a few details — DataDeal runs Buy-to-Let, BRRRR, HMO, Flip, Serviced Accommodation and Purchase Lease Option in seconds. Built on HMLR price-paid data, official ONS area rents and PostGIS.
No card · No setup · Pro features unlocked for 7 days
$ datadeal analyse
> postcode: M1 1AE · £180,000 · 3 bed terraced
[1/3] postcode → Manchester, England
[2/3] ONS rent baseline, 3-bed, Aug 2026…
[3/3] running six strategies…
price £180,000
SDLT (second home) £10,100
rent (ONS area) £1,433/mo
cash in £59,800
overall best BTL
cashflow pre-tax +£572/mo
after tax (40% band) +£234/mo
ICR 1.70
✓ MIN VIABLE — gross yield 9.55%
Real engine output, run 16 Oct 2026. Rent is an area baseline, not this property's rent.
Cashflow pre-tax
+£572/mo
ICR 1.70 · CoC 11.5%
Needs inputs
—
value after works + refurb cost
Needs inputs
—
rent per room
Needs inputs
—
sale price after works + refurb cost
Needs inputs
—
nightly rate + occupancy
Cashflow
−£19/mo
5-yr option · default terms· negative
6
Strategies per analysis
< 1 s
Server time per analysis
50
Regional trade day rates (indicative)
3
Purchase taxes (SDLT · LTT · LBTT)
━━ What you get
The numbers your investor will ask for, before you finish your tea.
Tax rates, sold prices, area rents, planning zones and mainstream mortgage rates come from official UK sources — HMRC, HMLR, ONS, MHCLG, Bank of England. HMO loan rates add a measured lender premium to the BoE buy-to-let rate, bridging uses published market ranges, and refurb day rates are our own indicative table — each labelled with its source.
Six-strategy engine
BTL, BRRRR, HMO, Flip, R2SA and Purchase Lease Option — every property gets all six. 7.5% lender stress test (stricter than the PRA minimum), infinite-ROI detection, MIN VIABLE thresholds.
- Cashflow, yield, ROI, capital growth + low-cash-in rankings
- Maths covered by automated tests, run in full before every release
Intelligence Map
Your portfolio + market signals on a PostGIS-backed dark map. Strategy-coloured pins, clustering, popup-to-detail in one click.
- MapLibre GL · CARTO Dark Matter basemap
- Auto-fit to your deals on load
Purchase tax + refurb maths, built-in
Purchase tax by country: SDLT (England & NI), LTT (Wales), LBTT + 8% ADS (Scotland). Indicative regional trade day rates (10 regions × 5 trades, not an official statistic) — auto-applied by postcode.
- Five refurb tiers cosmetic → HMO conversion
- Flip tax: trading (income tax + Class 4 NI) or investment (CGT) — your choice; Corporation Tax for companies
━━ Also in DataDeal: live and planned
Planning zone alerts
Article 4, conservation area and brownfield zones (MHCLG, England) around your saved deals — pushed to email.
Sold prices nearby
Residential sales in England & Wales from HM Land Registry Price Paid Data (sold for value, 2024 onwards) — median, spread and the latest comparables around any postcode.
AI Vision screening
Flag visible defects such as damp in photos you upload — a prompt for a survey, never a substitute for one.
━━ How it works
From listing to investor-ready in under a minute.
Type in six facts from the listing, wait a few seconds, read the verdict.
Enter the basics
Postcode, asking price, bedrooms, type, tenure and (optionally) floor area. We geocode the postcode via postcodes.io and fill a missing rent with the official ONS average for the area.
The engine runs
Purchase tax for the property's country (SDLT, LTT or LBTT), regional refurb (indicative day rates, 5 trades), and all six strategies — buy-to-let through PLO — fire in parallel. 7.5% lender stress test included (stricter than the PRA minimum).
Verdict in JetBrains Mono
Best-by-goal rankings (cashflow / yield / ROI / capital growth / low-cash-in). Min-viable pass/fail. Warnings tiered by severity. One click to save.
━━ Where the numbers come from
Authoritative UK data, not LLM hallucinations.
Every figure names its source: an official dataset, a published rate, or our own estimate labelled as one. Where an input is missing we say so instead of guessing.
HMRC SDLT · Welsh LTT · Scottish LBTT
Rates checked at gov.uk, gov.wales, gov.scot
HM Land Registry Price Paid
E&W residential sales for value, 2024 onwards
ONS Price Index of Private Rents
Monthly area rent baselines
DataDeal refurb table 2026-Q1
Indicative trade day rates, 10 regions × 5 trades — not an official statistic
MHCLG Planning Data
Article 4, conservation, brownfield
OS Code-Point Open
Postcode locations (postcodes.io fallback)
━━ Pricing
One flat fee. Cancel anytime. Pro features unlocked during trial.
Inclusive of UK VAT. No setup. Self-serve via Stripe Customer Portal.
Free
free forever
7-day trial, no card required
- 3 deal analyses / month
- All calculators (SDLT, refurb, strategy compare)
- Intelligence map: sold-price heatmap (England & Wales) + planning zones (England)
- Sold-price comparables + ONS area rents
Starter
inc VAT · £15.83 ex VAT
For solo investors getting started
- 15 deal analyses / month
- All calculators (SDLT, refurb, strategy compare)
- Intelligence map: sold-price heatmap (England & Wales) + planning zones (England)
- Sold-price comparables + ONS area rents
Pro
inc VAT · £40.83 ex VAT
For serious portfolio builders
- Unlimited deal analyses
- All calculators (SDLT, refurb, strategy compare)
- Intelligence map: sold-price heatmap (England & Wales) + planning zones (England)
- Sold-price comparables + ONS area rents
7-day Pro trial included on every plan · No card required
━━ FAQ
The questions investors actually ask.
If yours isn't here, the trial is free — try it for seven days and decide.
Is the data really live, or curated demos?
What stamp duty rates do you use?
Where do refurb costs come from?
Why six strategies, and what's MIN VIABLE?
Will I be locked in?
Is this UK-only?
Your next deal is on the market right now.
Stop running the maths on six tabs. Enter the basics, get the verdict, move on to the offer.