Resources · Data Bank

Glossary

Term	Meaning in Data Bank
Area / LAD	A supported local authority district, identified by its official code in the selected release.
Basis	The interpretation category of a series: recorded/revisable, estimated, observed, derived, indicative or scenario.
Basis point	One hundredth of a percentage point. 100bp equals one percentage point.
Capital value	Estimated typical property value for an area/type/bedroom segment, not an individual address valuation.
Coverage	Whether a metric/segment/node has retained supported observations; not a confidence probability.
Cursor	Opaque continuation token retaining a query's identity, release and position.
Dataset	Query group selected by `dataset`; it can contain several metrics.
Development cluster	Estimated grouping of observed deliveries, not necessarily a verified planning site.
Dimensions	Additional node identifiers within a response, such as tenor, fixed term or projection horizon.
Fixed term	Duration of a fixed-rate interval, distinct from its start date or horizon.
Gross yield	Annualised estimated rent divided by estimated capital value before costs.
History capability	What historical observations or snapshots are genuinely retained for a product.
Horizon	Future start/projection offset in months from a snapshot.
Indicative	Analytical market reference, not an executable quote.
Instantaneous forward	A fitted forward rate at a point along a curve, not a fixed coupon over a long forward interval.
Latest	Most recent stored observation or product snapshot, not necessarily today's date or a non-null value. Missing nodes are not filled from older snapshots.
LTV	Loan-to-value reference attached to a quoted product or scenario assumption.
Metric	One measure within a dataset, identified by a machine-readable name.
Mixed vintage	Inputs with different observation dates, explicitly disclosed in hybrid yield responses.
Nominal value	Original recorded cash prices, not inflation-adjusted turnover.
Observation period	Date/month labelling a data point; can be the endpoint of a rolling window.
OIS	Overnight indexed swap; used here as a reference curve family and basis for indicative equivalents.
Par equivalent	Fixed-rate equivalent derived for a specified instrument convention; not a zero-coupon spot node.
Price band	National rolling transaction-price group with period-specific cash bounds.
Publication date	When a release was published, distinct from the underlying observation dates.
Release	Versioned family data package used to answer a request.
Reversion rate	Mortgage rate benchmark applicable after an introductory product period, not necessarily a specific lender's contractual rate.
Rolling window	Period of evidence moving forward one month per observation, overlapping neighbouring windows.
Scenario	Conditional future assumptions with no assigned forecast probability.
Series	A metric and dimension combination with dated observations.
Snapshot	Dated curve/path state, separate from future maturities or projection dates.
SONIA	Sterling overnight reference rate; the compounded index and forward path are distinct products.
T-3	Observation endpoint three calendar months before the release month; not a completeness guarantee.
Tenor	Time to maturity, expressed as `tenor_months` on curve requests.
Unclassified	Delivery evidence not assigned to a supported development-size category; not automatically single-home stock.
Vintage	The information contained in a particular retained release, not simply an observation's historical date.