Flat 3, 9 Castilian Street, Northampton, NN1 1JS
About Flat 3
Flat 3 is a mid-terrace house in Northampton (NN1 1JS). It has a recorded floor area of 42 m² (around 452 sq ft). At 42 m² this is the 2nd smallest of 3 units on EPC record in the building, where floor areas span 29–62 m². On EPC score it ranks last in the building (69 versus a best of 74). The latest certificate (December 2020) shows a C (score 69), just inside the C band. Main heating runs on electricity: electricity, unspecified tariff.
At 42 m² it's 26.3% smaller than the typical home in the postcode (57 m² median across 13 EPCs).
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Energy performance
EPC Rating
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Planning history
Flat 3 has no planning applications on record.
But the area is active
45 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
Flat 3 has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£146,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in NN1 1JS: £225,000 (2025–2016).
Nearby sales in NN1 1JS
Flat 1, 9 Castilian Street, Northampton, NN1 1JS
Sold Mar 2025
£225,0005 Castilian Street, Northampton, NN1 1JS
Sold Dec 2017
£285,000Flat 2, 7 Castilian Street, Northampton, NN1 1JS
Sold Jun 2017
£99,450Flat 3, 7 Castilian Street, Northampton, NN1 1JS
Sold Mar 2016
£113,500Flat 1, 7 Castilian Street, Northampton, NN1 1JS
Sold May 2015
£120,000
Versus other Castilian Street homes
Flat 3 is notably below the street on floor area.
EPC Rating
69 (C)
Street avg 67 (D)
Floor Area
42 m²
Street avg 54 m²
CO₂ Emissions
1.8 t/year
Street avg 2.3 t/year
Everything you need to know about Flat 3
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
One time fee only - money back guarantee
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The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
11/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Post Office — bus stop.
Closest school
0.8 km
Spring Lane Primary School. 32 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
57.0dB
Night-time· 23:00 – 07:00
47.6dB