Flat 3, 25 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 60 m² (around 646 sq ft) and construction records dating it to 2012 onwards. At 60 m² this is the 3rd smallest of 4 units on EPC record in the building, where floor areas span 53–68 m². The building's EPC ratings span E to D, with this unit at the top. On EPC score it ranks first in the building (59 versus a worst of 48). The latest certificate (June 2025) shows a D (score 59), a step below the typical UK home. The rating has held steady at D across 2 certificates since February 2015. Between certificates, wall efficiency went from Good to Very Good. The recommended improvements would push it to C (score 77). Main heating runs on electricity.
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
The data behind every report
Energy performance
EPC Rating
Get a survey for this property
Level 3 Building Survey
Because the property has no mains gas supply and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
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.
£161,000
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
CO₂ Emissions for Flat 3 lags the street by a wide margin.
EPC Rating
59 (D)
Street avg 67 (D)
Floor Area
60 m²
Street avg 53 m²
CO₂ Emissions
2.9 t/year
Street avg 2.2 t/year
Habitable Rooms
2 rooms
Street avg 2 rooms
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
The data behind every report
Similar properties nearby
16 Saxon Court, Flat 2, St Peters Street
NN1 1FD
10 Saxon Court, Flat 3, St Peters Street
NN1 1FD
16 Saxon Court, Flat 3, St Peters Street
NN1 1FD
16 20, Flat 7, Gold Street
NN1 1RT
16 20, Flat 3, Gold Street
NN1 1RT
16 20, Flat 6, Gold Street
NN1 1RT
16 Saxon Court, Flat 1, St Peters Street
NN1 1FD
14 Saxon Court, Flat 1, St Peters Street
NN1 1FD
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