Over the past 27 years, there have been 98 property sales recorded in the NN9 5TW postcode area. The highest sale price reached £225,000, while the most recent sale was for a semi-detached house sold in February 2026 for £225,000.

The estimated average property value in NN9 5TW currently stands at £263,992, which is roughly in line with the city average (within ±8%), suggesting property prices reflect broader market trends.

In terms of size, the average price per square metre is approximately £3,287.

Property prices in NN9 5TW have risen by 4.5% over the past year , with a total increase of 24.8% over the past five years , and a long-term rise of 72.1% over the past decade .

The most common type of property sold in the area is semi-detached, making up around 73% of transactions , followed by detached.

Housing in NN9 5TW is predominantly owner-occupied, with an estimated 80% of homes being lived in by the owners.

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Property Sales

1 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

🏠 Detached
🛏️ 6bed
📐 1152 sq ft
Today
£361,624
streetscan.co.uk estimate
10 Jun 2011
£185,000
6 Sep 2002
£137,500
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10 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

🏠 Semi-detached
🛏️ 5bed
📐 743 sq ft
Today
£228,194
streetscan.co.uk estimate
27 Mar 2015
£130,750
2 Nov 2006
£125,000
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11 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

🏠 Semi-detached
🛏️ 5bed
📐 732 sq ft
Today
£242,169
streetscan.co.uk estimate
4 Jul 2018
£187,000
24 Jul 2015
£140,000
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12 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

Today
£316,611
streetscan.co.uk estimate
23 Oct 1998
£59,950

14 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

🏠 Semi-detached
🛏️ 5bed
📐 721 sq ft
Today
£219,783
streetscan.co.uk estimate
3 Apr 2020
£176,000
5 Sep 2008
£110,000
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15 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

Today
£289,218
streetscan.co.uk estimate
24 Sep 1998
£59,999

16 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

Today
£248,747
streetscan.co.uk estimate
18 Mar 2005
£125,000
25 Sep 1998
£60,500

17 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

Today
£250,396
streetscan.co.uk estimate
15 Apr 2005
£121,000
7 Sep 2001
£69,000
30 Jun 1998
£59,950

18 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

Today
£299,916
streetscan.co.uk estimate
30 Jun 1998
£59,500

19 Middle Grass, Irthlingborough, Wellingborough, North Northamptonshire, NN9 5TW

🏠 Semi-detached
🛏️ 4bed
📐 614 sq ft
Today
£224,778
streetscan.co.uk estimate
9 Feb 2026
£225,000
28 Jan 2022
£208,000
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2 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

🏠 Detached
🛏️ 5bed
📐 1133 sq ft
Today
£309,708
streetscan.co.uk estimate
7 Apr 2011
£160,000
30 Dec 1998
£83,500
More details

20 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

🏠 Semi-detached
🛏️ 4bed
📐 734 sq ft
Today
£225,172
streetscan.co.uk estimate
24 Feb 2017
£155,000
19 Dec 2014
£128,000
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21 Middle Grass, Irthlingborough, Wellingborough, North Northamptonshire, NN9 5TW

🏠 Semi-detached
🛏️ 4bed
📐 764 sq ft
Today
£225,000
streetscan.co.uk estimate
9 Jan 2026
£225,000
23 Aug 2013
£123,000
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22 Middle Grass, Irthlingborough, Wellingborough, North Northamptonshire, NN9 5TW

🏠 Semi-detached
🛏️ 5bed
📐 743 sq ft
Today
£223,371
streetscan.co.uk estimate
24 Jan 2025
£215,000
19 Sep 2003
£97,500
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23 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

🏠 Semi-detached
🛏️ 4bed
📐 884 sq ft
Today
£220,778
streetscan.co.uk estimate
2 Mar 2016
£140,000
21 Mar 2014
£115,000
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24 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

🏠 Semi-detached
🛏️ 4bed
📐 732 sq ft
Today
£260,158
streetscan.co.uk estimate
27 May 2005
£127,000
15 Jul 1998
£58,500
More details

25 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

🏠 Semi-detached
🛏️ 4bed
📐 614 sq ft
Today
£224,127
streetscan.co.uk estimate
28 Sep 2018
£175,500
30 Oct 2003
£92,000
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26 Middle Grass, Irthlingborough, Wellingborough, North Northamptonshire, NN9 5TW

🏠 Semi-detached
🛏️ 4bed
📐 732 sq ft
Today
£233,044
streetscan.co.uk estimate
1 Jul 2022
£225,000
3 Feb 2009
£107,000
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27 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

🏠 Semi-detached
🛏️ 5bed
📐 732 sq ft
Today
£274,880
streetscan.co.uk estimate
27 Sep 2002
£90,000
26 Jun 1998
£59,500
More details

28 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

🏠 Semi-detached
🛏️ 5bed
📐 936 sq ft
Today
£241,184
streetscan.co.uk estimate
28 Feb 2006
£117,500
26 Jun 1998
£56,220
More details

29 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

Today
£328,331
streetscan.co.uk estimate
27 May 2005
£164,000
8 Mar 2002
£96,995
18 Jun 1998
£80,300

3 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

🏠 Detached
🛏️ 5bed
📐 990 sq ft
Today
£285,942
streetscan.co.uk estimate
4 Aug 2014
£165,000
20 Dec 2005
£157,000
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30 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

Today
£404,761
streetscan.co.uk estimate
22 Jun 1998
£80,300

4 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

🏠 Detached
🛏️ 4bed
📐 990 sq ft
Today
£303,980
streetscan.co.uk estimate
28 Nov 2003
£135,000
27 Sep 2002
£125,000
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5 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

Today
£264,408
streetscan.co.uk estimate
19 May 2006
£135,000
29 Jan 1999
£71,750

6 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

🏠 Semi-detached
🛏️ 4bed
📐 603 sq ft
Today
£198,088
streetscan.co.uk estimate
31 Mar 2015
£113,500
30 Oct 1998
£52,500
More details

7 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

🏠 Semi-detached
🛏️ 4bed
📐 732 sq ft
Today
£220,038
streetscan.co.uk estimate
2 Sep 2011
£108,500
23 Oct 1998
£51,950
More details

8 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

🏠 Semi-detached
🛏️ 4bed
📐 614 sq ft
Today
£220,810
streetscan.co.uk estimate
5 Sep 2003
£89,500
23 Mar 2001
£59,000
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9 Middle Grass, Irthlingborough, Wellingborough, East Northamptonshire, Northamptonshire, NN9 5TW

🏠 Semi-detached
🛏️ 4bed
📐 4187 sq ft
Today
£236,945
streetscan.co.uk estimate
18 Nov 2009
£114,500
11 Apr 2003
£82,000
View +1 more
More details

Area Insights

Data Sources

Properties at NN9 5TW appear ninety-eight times in the Land Registry records, with the latest transaction recorded on 9 Feb 2026. It also has twenty-one Energy Performance Certificates (EPC) entries, the earliest dating back to 13 Jan 2020. 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.