21, Cowper Street, Olney occupies a 122 m² plot as recorded by HM Land Registry.

Of the 41 other houses in this postcode, 37 have recorded plot sizes, and this one ranks as the 31st largest.

21, Cowper Street, Olney has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 26 Feb 2018.

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

21, Cowper Street, Olney last changed hands on 28th May 2004, selling for £181,000. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold 3 times since 1995.

• Sold May 2004£181,000
• Sold Apr 2000£83,000
• Sold Jun 1999£67,500

Land Registry records and our Estate Agent network show 155 sales of comparable properties within 820 metres of 21, Cowper Street, Olney since 2008.

Most recently, 39, Carey Way, Olney, MK46 4DR, a freehold house, sold at £300,000 on the 12th December 2025.

Read more about house prices in MK46.

• Sold Dec 2025£300,000 | 3 Bed House39, Carey Way, Olney, MK46 4DR39, Carey Way, Olney, MK46 4DR
• Sold Oct 2025£320,000 | 3 Bed House36, Cowper Street, Olney, MK46 4BW36, Cowper Street, Olney, MK46 4BW
• Sold Aug 2025£350,000 | 3 Bed House5, Cowper Street, Olney, MK46 4BW5, Cowper Street, Olney, MK46 4BW
• Sold Mar 2025£315,000 | 3 Bed House142, East Street, Olney, MK46 4BT142, East Street, Olney, MK46 4BT
• Sold Mar 2025£326,000 | 3 Bed House20, Newton Street, Olney, MK46 4BS20, Newton Street, Olney, MK46 4BS
• Sold Oct 2024£290,000 | 3 Bed House27, Carey Way, Olney, MK46 4DR27, Carey Way, Olney, MK46 4DR
• Sold Sep 2024£320,000 | 3 Bed House41, Carey Way, Olney, MK46 4DR41, Carey Way, Olney, MK46 4DR
• Sold Apr 2024£475,000 | 3 Bed House14, Cowper Street, Olney, MK46 4BW14, Cowper Street, Olney, MK46 4BW
• Sold Aug 2023£310,000 | 3 Bed House10, Newton Street, Olney, MK46 4BS10, Newton Street, Olney, MK46 4BS
• Sold Aug 2022£350,000 | 3 Bed House34, Dartmouth Road, Olney, MK46 4BH34, Dartmouth Road, Olney, MK46 4BH
• Sold Jul 2022£350,000 | 3 Bed House36, Dartmouth Road, Olney, MK46 4BH36, Dartmouth Road, Olney, MK46 4BH
• Sold Jun 2021£282,000 | 3 Bed House51, Wellingborough Road, Olney, MK46 4BJ51, Wellingborough Road, Olney, MK46 4BJ
• Sold Feb 2021£250,000 | 3 Bed House18, Newton Street, Olney, MK46 4BS18, Newton Street, Olney, MK46 4BS
• Sold Nov 2020£315,000 | 3 Bed House28, Newton Street, Olney, MK46 4BS28, Newton Street, Olney, MK46 4BS
• Sold Apr 2020£355,000 | 3 Bed House38, Newton Street, Olney, MK46 4BS38, Newton Street, Olney, MK46 4BS
• Sold Jan 2019£285,000 | 3 Bed House4, Newton Street, Olney, MK46 4BS4, Newton Street, Olney, MK46 4BS
• Sold Dec 2017£285,000 | 3 Bed House57, Wellingborough Road, Olney, MK46 4BJ57, Wellingborough Road, Olney, MK46 4BJ
• Sold Sep 2017£229,500 | 3 Bed House30, Newton Street, Olney, MK46 4BS30, Newton Street, Olney, MK46 4BS
• Sold Feb 2016£282,500 | 3 Bed House11, Cowper Street, Olney, MK46 4BW11, Cowper Street, Olney, MK46 4BW
• Sold Nov 2008£138,000 | 3 Bed House17, Cowper Street, Olney, MK46 4BW17, Cowper Street, Olney, MK46 4BW

Our analysis of the public data ranks 21, Cowper Street, Olney as the 37th largest and the 37th most expensive of the 41 addresses on Cowper Street, Olney, MK46.

Against the MK46 postcode district average, it is £101k less expensive than the typical property.

• Olney Middle School

  500 m away
• Olney Infant Academy

  1.0 km away
• Lavendon School

  3.2 km away

• E-Act Ousedale School

  9.3 km away
• Wollaston School

  11.0 km away
• Sharnbrook Academy

  12.0 km away

• Wolverton

  |

  12.7 km away
• Milton Keynes Central

  |

  14.9 km away
• Bedford

  |

  15.3 km away

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