Things this data says that nobody set out to look for
Every number here is computed from the 40,487 priced sales and 17,561 planning applications this site holds, each time the page is built — nothing is typed in, so nothing here can quietly go out of date. Each one also says what would make it wrong, because a pattern this easy to find is usually an artefact of how the data was collected rather than a fact about property.
Why do so many Manx sales complete on a Friday?
16,177 of them do — against 6,915 on Thursdays, the next busiest day.
There is no legal reason for it. Guernsey's register clusters on Tuesdays and Thursdays because every conveyance there completes in person before the Royal Court on those days — but a Manx completion is a registry transaction that could fall on any working day. This is habit: advocates, lenders and removal firms all working to the same convention. What would make this wrong: the register records the date of the transaction, which need not be the day anyone actually moved in.
Is a house really worth less in January?
Sales completing in January come in at 95.7% of that year's median, against 102.2% in October — a 6.5-point spread, holding across 22 separate years.
Each year is normalised against its own median first, so three decades of house-price inflation cannot masquerade as a seasonal effect. What would make this wrong: it measures the mix of what sold, not the same house at two different times. If larger properties tend to complete in summer, that alone produces this pattern — read it as “expensive homes change hands in July”, not “list in July and get 6.5% more”.
The repeat-sales index, which does follow the same properties
How long does a planning decision take here?
This site cannot tell you — and says so rather than estimating.
Planning and Building Control's open data publishes the date a decision was issued, but not the date the application was received. Without both, the time an application actually took cannot be computed, and a figure derived from the issue date alone would measure nothing. The Planning Directorate's own published targets are eight weeks for a householder application and thirteen for a larger one; whether those are met is not something this data can check. If a source carrying received dates is ever found, this card fills itself in.
How much of the Isle of Man actually changes hands in a year?
Between 1,809 and 2,483 properties — the market nearly halved between 2021 and 2024, then recovered.
Against an island of roughly 32,000 dwellings, even a peak year moves about four in every hundred. What would make this wrong: nominal £1 family transfers are excluded, and a year is counted by the date of registration, so a sale agreed in December and completed in January lands in the later year.
When do families quietly move property between themselves?
March. 2,260 sales in the register are recorded at a nominal £1, £10 or £100, and 216 of them fall in March against 163 in June — an even spread would be 188 a month.
A token price is the standard consideration for a transfer within a family or an estate settlement, not a market price — which is why this site strips all 2,260 of them out of every average it computes. What would make this wrong: the skew is modest, and December is also when solicitors clear their desks before the year end, which would produce the same shape for a duller reason.
Because they are the questions people actually ask, and because a register nobody cross-references is just a list. None of it is advice, and none of it predicts what your own property will do — every finding here describes what has already happened to other people's homes, which is a different thing.