Flat 2, 7 Castilian Street, Northampton, NN1 1JS
About Flat 2
Flat 2 is a one-bedroom mid-terrace house in Northampton (NN1 1JS). It has a recorded floor area of 38 m² (around 409 sq ft) and construction records dating it to before 1900. The latest certificate (January 2018) shows a D (score 57), a step below the typical UK home. The recommended improvements would lift it to B (score 86), a 2-band jump. Main heating runs on electricity. Period features are noted in the property record.
At 38 m² it sits well below the postcode median (57 m² across 13 EPCs), making it one of the more compact homes locally. Today's modelled estimate of £113,000 is 13.6% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£243/sq ft) was about 77.1% above the typical sold price in the postcode. 9 years since the last transfer (June 2017).
What this property has
Inside
- Bedrooms1
- Bathrooms1
- Open-plan layoutYes
Building
- Period featuresYes
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Certificate validity
Valid until 18 January 2028
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, 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 2 has no planning applications on record.
But the area is active
43 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
Flat 2 valuation runs notably under the typical sold price in this postcode.
£113,000
Modelled from EPC, postcode comparables.
£99,450
Recorded with HM Land Registry.
Sales timeline
11 June 2017Most recent
£99,450
Median price across the last 5 sales in NN1 1JS: £249,995 (2026–2016).
Nearby sales in NN1 1JS
Flat, 21 Castilian Street, Northampton, NN1 1JS
Sold Apr 2026
£330,000Flat 1, 9 Castilian Street, Northampton, NN1 1JS
Sold Mar 2025
£225,0005 Castilian Street, Northampton, NN1 1JS
Sold Dec 2017
£285,000Flat 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
Floor Area for Flat 2 lags the street by a wide margin.
Price per m²
£2,617
Street avg £2,712
Floor Area
38 m²
Street avg 54 m²
Habitable Rooms
2 rooms
Street avg 2 rooms
CO₂ Emissions
2.9 t/year
Street avg 2.2 t/year
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The neighbourhood at a glance
Crime
571/mo
Steady 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







