18, Sunnyside, Northampton occupies a 591 m² plot as recorded by HM Land Registry.

Of the 31 other houses in this postcode, 27 have recorded plot sizes, and this one ranks as the 8th largest.

18, Sunnyside, Northampton has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 09 Jun 2010.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

18, Sunnyside, Northampton last changed hands on 2nd February 2018, selling for £425,000. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold twice since 1995.

The market for similar properties has risen by 31.2% since February 2018.

Land Registry records and our Estate Agent network show 26 sales of comparable properties within 890 metres of 18, Sunnyside, Northampton since 2008.

Most recently, 23, New Street, Northampton, NN6 0NN, a freehold house, sold at £392,000 on the 12th January 2026.

Read more about house prices in NN6.

• Sold Jan 2026£392,000 | 3 Bed House23, New Street, Northampton, NN6 0NN23, New Street, Northampton, NN6 0NN
• Sold Nov 2025£437,500 | 3 Bed House3, Townley Way, Northampton, NN6 0HR3, Townley Way, Northampton, NN6 0HR
• Sold Nov 2025£410,000 | 4 Bed House10, Shurville Close, Northampton, NN6 0JB10, Shurville Close, Northampton, NN6 0JB
• Sold Feb 2025£462,500 | 4 Bed House57, Churchill Road, Northampton, NN6 0PQ57, Churchill Road, Northampton, NN6 0PQ
• Sold Nov 2024£320,000 | 4 Bed House70, Elizabeth Way, Northampton, NN6 0HN70, Elizabeth Way, Northampton, NN6 0HN
• Sold May 2020£325,000 | 4 Bed House2, Churchill Road, Northampton, NN6 0PQ2, Churchill Road, Northampton, NN6 0PQ
• Sold Jan 2020£15,000 | 3 Bed House40, Northampton Road, Northampton, NN6 0HA40, Northampton Road, Northampton, NN6 0HA
• Sold Nov 2019£346,000 | 3 Bed House31, Broad Street, Northampton, NN6 0ND31, Broad Street, Northampton, NN6 0ND
• Sold Jun 2019£315,000 | 4 Bed House15, Knights Close, Northampton, NN6 0JD15, Knights Close, Northampton, NN6 0JD
• Sold Aug 2018£330,000 | 4 Bed House14, Knights Close, Northampton, NN6 0JD14, Knights Close, Northampton, NN6 0JD
• Sold Jun 2018£300,000 | 4 Bed House5, Harrowick Lane, Northampton, NN6 0HD5, Harrowick Lane, Northampton, NN6 0HD
• Sold Jul 2017£334,995 | 4 Bed House1, Knights Close, Northampton, NN6 0JD1, Knights Close, Northampton, NN6 0JD
• Sold Oct 2015£275,000 | 3 Bed House1, Beare Close, Northampton, NN6 0QZ1, Beare Close, Northampton, NN6 0QZ
• Sold Mar 2015£100,000 | 3 Bed House3, Beare Close, Northampton, NN6 0QZ3, Beare Close, Northampton, NN6 0QZ
• Sold Mar 2015£236,463 | 3 Bed House16, Pynkeny Close, Northampton, NN6 0RL16, Pynkeny Close, Northampton, NN6 0RL
• Sold Mar 2015£232,500 | 3 Bed House18, Pynkeny Close, Northampton, NN6 0RL18, Pynkeny Close, Northampton, NN6 0RL
• Sold Apr 2014£335,000 | 3 Bed House1, Harrowick Lane, Northampton, NN6 0HD1, Harrowick Lane, Northampton, NN6 0HD
• Sold Feb 2013£250,000 | 3 Bed House9, Leys Road, Northampton, NN6 0ET9, Leys Road, Northampton, NN6 0ET
• Sold Mar 2010£219,000 | 3 Bed House86, Northampton Road, Northampton, NN6 0HE86, Northampton Road, Northampton, NN6 0HE
• Sold Jul 2008£225,000 | 3 Bed House84, Northampton Road, Northampton, NN6 0HE84, Northampton Road, Northampton, NN6 0HE

Our analysis of the public data ranks 18, Sunnyside, Northampton as the 23rd largest and the 9th most expensive of the 31 addresses on Sunnyside, Earls Barton, Northampton, NN6.

Against the NN6 postcode district average, it is £41k more expensive than the typical property.

• Earls Barton Primary School

  500 m away
• Ecton Village Primary School

  2.2 km away
• Ecton Brook Primary School

  3.2 km away

• Northampton Academy

  5.2 km away
• Weavers Academy

  5.2 km away
• Wrenn School

  5.9 km away

• Wellingborough

  |

  7.1 km away
• Northampton

  |

  10.5 km away
• Kettering

  |

  14.5 km away

Environment Agency data suggests this area has a Very Low risk of flooding.