A Proanex productA value you can defend in committee.
Any home in England and Wales valued from like-for-like sales, with a range that holds the price eight times in ten, a confidence band that means something, and the deal maths in tested code.
Ranges that tell the truth.
Viiyoo values a home from the sales most like it, then sets the range from how far past valuations of homes like it actually missed. The band says how much to rely on it, and it is measured, not asserted.
- Like-for-like. Comparables of the same built form, floor areas that account for extensions, and price per square metre adjusted for size.
- Flats, from their own block. A sale in the same building counts for more.
- Honest about the hard cases. Flats and recently extended homes are harder to value; their ranges are wider, and the page says so.
Real Viiyoo screen from a demo organisation. Addresses are replaced with descriptions.
From rent to return, step by step.
Rents from comparable lettings
Market rent from comparable lettings chosen under your methodology, the same home listed twice counted once, with the range of comparable rents. These are asking rents, not achieved rents.
The right tax for each nation
Stamp Duty Land Tax in England, Land Transaction Tax in Wales, and LBTT with the Additional Dwelling Supplement in Scotland.
Underwriting in tested code
Yields, cash flow, interest cover, IRR and stress tests on stated assumptions. A language model never computes a number.
The area behind it
Deprivation, income affordability, how asking prices turn into sale prices, flood risk, planning constraints, crime and tenure.
Documents read for you
Leases and reports: the terms that matter, quoted word for word from the page they came from.
Ask Viiyoo
Questions in plain English, answered only from the evidence, with every sentence pointing to its source.
The detail behind every figure.
The detail behind every decision. Screens are illustrative; figures are examples.
A value you can walk someone through.
Viiyoo finds nearby sales, matches floor areas from the EPC register, adjusts each for time with the UK House Price Index and removes outliers. The result is a central figure, a range and a confidence level, and it widens the range when the evidence disagrees.
| # | Sale | Area | Price | £/m² (adj.) |
|---|---|---|---|---|
| 1 | 3 months ago · 0.3 mi | 71 m² | £629,500 | £8,940 |
| 2 | 7 months ago · 0.4 mi | 64 m² | £585,000 | £9,210 |
| 3 | 10 months ago · 0.4 mi | 70 m² | £640,000 | £9,260 |
What's around it, from the people who record it.
Viiyoo asks official open sources about the exact location when you need it: flood risk and warnings, conservation areas, Article 4 directions, listed buildings, tree preservation orders, street-level crime and Census tenure. Each fact is dated and named, and a source that fails to answer is reported, not hidden.
| Check | Result | Source |
|---|---|---|
| Flood zone | Zone 1 · low | Environment Agency |
| Conservation area | Inside | planning.data.gov.uk |
| Article 4 direction | None at point | planning.data.gov.uk |
| Street crime, 3 months | Recorded within 1 mile | data.police.uk |
| Private renting, LSOA | Share of households | Census 2021 |
The lease, read. The clause, quoted.
Upload a lease, a survey or a management pack. Viiyoo pulls out the terms that matter (ground rent, term, service charge, restrictions) and shows the exact words from the page they came from. If the words aren't in the document, the term isn't claimed.
What a home should let for, and how sure we are.
Viiyoo picks comparable rentals under your organisation's own versioned methodology, applies the Local Housing Allowance rate in force on the day, runs several rent models and gives a 0–100 confidence score with its basis. The result is an evidence pack you can hand on.
Below the minimum sample, a market figure is withheld with the reason.
Every home checked, every exception explained.
Import a portfolio from a spreadsheet, with saved column layouts. Viiyoo resolves and assesses every home against your methodology, keeps a ledger of each rule it applied, lists the exceptions and produces an assurance pack ready for a funder or board.
| Rule | Pass | Exceptions |
|---|---|---|
| Rent within 10% of LHA | 205 | 9 |
| At least 5 comparables | 212 | 2 |
| EPC rating E or better | 210 | 4 |
Where a requirement can actually be met.
Lettings and sales by local authority, ward or postcode district, with maps and monthly trends, refreshed nightly. The scenario modeller takes a requirement, such as a number of homes at a rent ceiling, and shows where the market can supply it.
Requirement: 40 two-bed homes a quarter at up to £1,700 a month
| Area | Lets / month | Median rent | Fit |
|---|---|---|---|
| Area A | 62 | £1,650 | Meets |
| Area B | 71 | £1,740 | Partly |
| Area C | 48 | £2,050 | No |
Answers that show their working.
Ask a question in plain English. Viiyoo answers only from the evidence on the property, and every sentence points to the record or calculation behind it. Money figures come from tested code, never from the AI, and an answer it can't support never reaches you.
Is the asking price supported?
The asking price is 6% above the estimated value calc. The three closest sales of similar two-bedroom flats in the last year sold between £585,000 and £640,000 123. The flat sits inside a conservation area 5, which limits external changes.
Value a home you know.
Tell us an address and what it sold for, and see how close Viiyoo gets.