Monthly transaction volume
market_volume_seriesRead-onlyIdempotent
Monthly transaction VOLUME for a postcode district, postcode area or
county — every registered sale, 1995 to present, oldest month first.
Use this, not `market_facts`, for "how many sales" questions.
`market_facts` reads the area_facts cube, whose count is a UPRN-matched
sample that runs 17-66% short of the registry; this reads HMLR price paid
directly. Conversely use `market_facts` for price/rent/yield by asset
class and bedroom band, which this does not break down.
Provide exactly one of district ("SW11", or a full postcode, which is
truncated), area ("SW") or county ("GREATER LONDON"). `district` is a
POSTCODE district, not a borough — "NW1", not "Camden".
`start` and `end` are months: "2024-06" or "2024-06-01", either accepted.
Metrics default to txn_count + median_price. Prices are category A only —
a median including repossessions is not a market median.
ALWAYS check `provisional_from` in the response before reading a trend:
HM Land Registry registers sales months after completion, so the trailing
months are incomplete and will rise. UK only. Free.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| end | No | ||
| area | No | ||
| start | No | ||
| county | No | ||
| metrics | No | ||
| district | No |
Output Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||