Flat 4, 25 Castilian Street, Northampton, NN1 1JS

Flat 4 has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.

Flat 4 sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.

How the estimate is made

The estimate for Flat 4 is modelled from its 53 m² EPC floor area, the absence of a recorded sale and recent sales of comparable homes in NN1 1JS. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.

Where sold prices come from

Sold prices are HM Land Registry Price Paid Data, which covers residential sales in England and Wales since 1995. No sale is recorded for Flat 4, which usually means it hasn't changed hands since 1995 or the sale was not for value. Sales normally appear two to three months after completion, so the most recent ones take time to show up anywhere.

Reading the EPC

Energy Performance Certificates rate homes from A (most efficient) to G and last 10 years. The latest one for Flat 4 was lodged in June 2025 at band E and is valid until June 2035. 2 certificates are on record, which shows how the home has changed.

Planning records

Planning applications are collected from local authority registers through PlanIt. None is matched to Flat 4. Councils sometimes file applications under a different address format, and applications on neighbouring land aren't listed here; the report covers both.

Area figures

Crime is police-recorded street-level data over the last 16 months, which places each incident at an approximate point. The 32 schools and 30 stops listed are measured in a straight line from NN1 1JS, not by walking route. Road noise is Defra's strategic noise modelling, averaged across the postcode.