Castilian Mews, Flat 4, Castilian Street, Northampton, NN1 1JS
About Castilian Mews
Castilian Mews is a detached house in Northampton (NN1 1JS). It has a recorded floor area of 49 m² (around 527 sq ft), construction records dating it to 1950-1966 and council tax band C. At 49 m² this is the smallest unit on EPC record across Castilian Mews (49–63 m²). The latest certificate (November 2021) shows a C (score 77), near the top of the C band. When first surveyed in June 2009 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Good and lighting went from Average to Very Good; while window efficiency dropped from Good to Average.
Everything you need to know about Castilian Mews
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
Castilian Mews's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Cavity wall insulation installed
Loft insulation installed or upgraded to 250mm+
More low energy lighting installed
Heating controls upgraded for better temperature management
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Planning history
Castilian Mews 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
Castilian Mews has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£149,000
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
On epc rating, Castilian Mews stands well clear of the street.
EPC Rating
77 (C)
Street avg 66 (D)
Floor Area
49 m²
Street avg 54 m²
CO₂ Emissions
1.4 t/year
Street avg 2.3 t/year
Habitable Rooms
2 rooms
Street avg 2 rooms
Everything you need to know about Castilian Mews
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
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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