Over the past 28 years, there have been 35 property sales recorded in the NN1 1JS postcode area. The highest sale price reached £285,000, while the most recent sale was a property sold in May 2025 for £235,000.

The estimated average property value in NN1 1JS currently stands at £225,878, which is approximately 18.1% lower than the city average - making it a relatively affordable option for buyers.

In terms of size, the average price per square metre is approximately £3,861.

Property prices in NN1 1JS have risen by 1.3% over the past year , with a total increase of 13.2% over the past five years , and a long-term rise of 41.5% over the past decade .

The most common type of property sold in the area is flat, making up around 54% of transactions , followed by terraced and other.

Housing in NN1 1JS is mixed, with 50% of homes being rented, indicating a diverse residential makeup.

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Property Sales

15 Castilian Street, Northampton, Northamptonshire, NN1 1JS

Today
£370,835
streetscan.co.uk estimate
18 Dec 2006
£213,500
7 Feb 2003
£185,000

19 Castilian Street, Northampton, West Northamptonshire, NN1 1JS

Today
£219,055
streetscan.co.uk estimate
14 Mar 2025
£225,000

23 Castilian Street, Northampton, West Northamptonshire, NN1 1JS

Today
£232,572
streetscan.co.uk estimate
16 May 2025
£235,000

5 Castilian Street, Northampton, Northamptonshire, NN1 1JS

🏠 Terraced
🛏️ 7bed
📐 1668 sq ft
Today
£367,857
streetscan.co.uk estimate
1 Dec 2017
£285,000
4 Aug 2016
£249,995
View +4 more
More details

7 Castilian Street, Northampton, Northamptonshire, NN1 1JS

🏠 Terraced
🛏️ 3bed
📐 398 sq ft
Today
£309,314
streetscan.co.uk estimate
29 May 2015
£197,000
10 Mar 2011
£190,000
View +4 more
More details

Flat 1, 7 Castilian Street, Northampton, Northamptonshire, NN1 1JS

🏠 Flat
🛏️ 2bed
📐 624 sq ft
Today
£149,586
streetscan.co.uk estimate
7 Jun 2018
£138,500
More details

Flat 2, 7 Castilian Street, Northampton, Northamptonshire, NN1 1JS

🏠 Flat
🛏️ 2bed
📐 409 sq ft
Today
£110,526
streetscan.co.uk estimate
12 Jun 2017
£99,450
More details

Flat 3, 7 Castilian Street, Northampton, Northamptonshire, NN1 1JS

Today
£141,949
streetscan.co.uk estimate
31 Mar 2016
£113,500

9 Castilian Street, Northampton, Northamptonshire, NN1 1JS

Today
£205,842
streetscan.co.uk estimate
14 Jan 2020
£185,000

Flat 1, Castilian Court, 17 Castilian Street, Northampton, Northamptonshire, NN1 1JS

Today
£194,659
streetscan.co.uk estimate
29 Jul 2005
£140,000

Flat 10, Castilian Court, 17 Castilian Street, Northampton, Northamptonshire, NN1 1JS

🏠 Flat
🛏️ 3bed
📐 732 sq ft
Today
£261,523
streetscan.co.uk estimate
5 Jan 2006
£190,000
More details

Flat 11, Castilian Court, 17 Castilian Street, Northampton, Northamptonshire, NN1 1JS

Today
£262,277
streetscan.co.uk estimate
23 Nov 2005
£190,000

Flat 12, Castilian Court, 17 Castilian Street, Northampton, Northamptonshire, NN1 1JS

Today
£199,583
streetscan.co.uk estimate
9 Jan 2006
£145,000

Flat 13, Castilian Court, 17 Castilian Street, Northampton, Northamptonshire, NN1 1JS

Today
£234,669
streetscan.co.uk estimate
23 Nov 2005
£170,000

Flat 14, Castilian Court, 17 Castilian Street, Northampton, Northamptonshire, NN1 1JS

🏠 Flat
🛏️ 3bed
📐 883 sq ft
Today
£289,052
streetscan.co.uk estimate
10 Jan 2006
£210,000
More details

Flat 2, Castilian Court, 17 Castilian Street, Northampton, Northamptonshire, NN1 1JS

Today
£234,669
streetscan.co.uk estimate
23 Nov 2005
£170,000

Flat 3, Castilian Court, 17 Castilian Street, Northampton, Northamptonshire, NN1 1JS

Today
£199,583
streetscan.co.uk estimate
11 Jan 2006
£145,000

Flat 4, Castilian Court, 17 Castilian Street, Northampton, Northamptonshire, NN1 1JS

Today
£178,937
streetscan.co.uk estimate
6 Jan 2006
£130,000

Flat 5, Castilian Court, 17 Castilian Street, Northampton, Northamptonshire, NN1 1JS

Today
£261,523
streetscan.co.uk estimate
12 Jan 2006
£190,000

Flat 6, Castilian Court, 17 Castilian Street, Northampton, Northamptonshire, NN1 1JS

Today
£245,409
streetscan.co.uk estimate
15 Aug 2005
£176,500

Flat 7, Castilian Court, 17 Castilian Street, Northampton, Northamptonshire, NN1 1JS

Today
£199,583
streetscan.co.uk estimate
19 Jan 2006
£145,000

Flat 8, Castilian Court, 17 Castilian Street, Northampton, Northamptonshire, NN1 1JS

Today
£178,937
streetscan.co.uk estimate
27 Jan 2006
£130,000

Flat 9, Castilian Court, 17 Castilian Street, Northampton, Northamptonshire, NN1 1JS

Today
£199,583
streetscan.co.uk estimate
9 Jan 2006
£145,000

Flat 1, 7 Castilian Street, Northampton, Northamptonshire, NN1 1JS

🏠 Flat
🛏️ 2bed
📐 624 sq ft
Today
£160,783
streetscan.co.uk estimate
26 May 2015
£120,000
More details

Area Insights

Data Sources

Properties at NN1 1JS appear thirty-five times in the Land Registry records, with the latest transaction recorded on 16 May 2025. It also has six Energy Performance Certificates (EPC) entries, the earliest dating back to 9 Feb 2016. We use this data, to estimate the property's characteristics and current market value.

This website uses public sector information from:

These datasets are licensed under the Open Government Licence v3.0.
This website is not affiliated with or endorsed by HM Land Registry or DLUHC.

Disclaimer: StreetScan.co.uk makes all reasonable efforts to ensure the information provided on this website is current and accurate; however, no warranties or representations are made as to its completeness or accuracy. StreetScan.co.uk expressly disclaims any and all liability for any loss, damage, or expense arising directly or indirectly from the use of, or reliance upon, such information.