HM Land Registry records the plot of land for 9, Portmarnock Close, Milton Keynes as measuring 349 m².

That makes it the 5th largest plot in the postcode, where 7 of the 9 other houses have recorded plot data.

9, Portmarnock Close, Milton Keynes has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 30 Apr 2018.

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

The most recent sale of 9, Portmarnock Close, Milton Keynes completed on 17th August 2021 at £390,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 the property has sold 4 times.

Values of comparable properties have risen by 13.7% over the period since August 2021.

• Sold Aug 2021£390,000
• Sold Apr 2014£249,995
• Sold Jun 1998£95,000

Since 2017 102 properties similar to 9, Portmarnock Close, Milton Keynes have sold within a radius of 680 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 20th November 2025, was 9, Ainsdale Close, Milton Keynes, MK3 7TP, a freehold house which sold for £405,000.

Read more about house prices in MK3.

• Sold Nov 2025£405,000 | 4 Bed House9, Ainsdale Close, Milton Keynes, MK3 7TP9, Ainsdale Close, Milton Keynes, MK3 7TP
• Sold Oct 2025£514,995 | 4 Bed House4, Forches Close, Milton Keynes, MK4 2BE4, Forches Close, Milton Keynes, MK4 2BE
• Sold Oct 2025£360,000 | 4 Bed House23, Tees Way, Milton Keynes, MK3 7PU23, Tees Way, Milton Keynes, MK3 7PU
• Sold Jun 2025£440,000 | 4 Bed House11, Denham Close, Milton Keynes, MK3 7TJ11, Denham Close, Milton Keynes, MK3 7TJ
• Sold Sep 2024£440,000 | 4 Bed House9, Otter Close, Milton Keynes, MK3 7QP9, Otter Close, Milton Keynes, MK3 7QP
• Sold Jul 2024£418,000 | 4 Bed House79, Tattenhoe Lane, Milton Keynes, MK3 7AE79, Tattenhoe Lane, Milton Keynes, MK3 7AE
• Sold May 2024£393,500 | 4 Bed House30, Walton Heath, Milton Keynes, MK3 7RU30, Walton Heath, Milton Keynes, MK3 7RU
• Sold Apr 2024£455,000 | 4 Bed House2, Ashburnham Close, Milton Keynes, MK3 7TR2, Ashburnham Close, Milton Keynes, MK3 7TR
• Sold Aug 2022£420,000 | 4 Bed House22, Severn Way, Milton Keynes, MK3 7QQ22, Severn Way, Milton Keynes, MK3 7QQ
• Sold Jun 2021£375,000 | 4 Bed House60, Severn Way, Milton Keynes, MK3 7QQ60, Severn Way, Milton Keynes, MK3 7QQ
• Sold Mar 2021£322,000 | 4 Bed House41, Severn Way, Milton Keynes, MK3 7QG41, Severn Way, Milton Keynes, MK3 7QG
• Sold Jan 2021£415,000 | 4 Bed House2, Denham Close, Milton Keynes, MK3 7TJ2, Denham Close, Milton Keynes, MK3 7TJ
• Sold Oct 2020£320,000 | 4 Bed House122, Severn Way, Milton Keynes, MK3 7QB122, Severn Way, Milton Keynes, MK3 7QB
• Sold Sep 2020£230,000 | 4 Bed House7, Sunningdale Way, Milton Keynes, MK3 7SB7, Sunningdale Way, Milton Keynes, MK3 7SB
• Sold Jun 2020£423,200 | 4 Bed House1, Hollinwell Close, Milton Keynes, MK3 7TW1, Hollinwell Close, Milton Keynes, MK3 7TW
• Sold Mar 2020£285,000 | 4 Bed House91, Severn Way, Milton Keynes, MK3 7QE91, Severn Way, Milton Keynes, MK3 7QE
• Sold Jan 2020£375,000 | 4 Bed House56, Severn Way, Milton Keynes, MK3 7QQ56, Severn Way, Milton Keynes, MK3 7QQ
• Sold Nov 2018£360,000 | 4 Bed House10, Hollinwell Close, Milton Keynes, MK3 7TW10, Hollinwell Close, Milton Keynes, MK3 7TW
• Sold Jan 2018£350,000 | 4 Bed House64, Severn Way, Milton Keynes, MK3 7QQ64, Severn Way, Milton Keynes, MK3 7QQ
• Sold Apr 2017£436,500 | 4 Bed House8, Denham Close, Milton Keynes, MK3 7TJ8, Denham Close, Milton Keynes, MK3 7TJ

Of the 9 addresses on Portmarnock Close, Bletchley, Milton Keynes, MK3, 9, Portmarnock Close, Milton Keynes comes out as the largest and the most expensive in our analysis of the public data.

It is also £76k more expensive than the average property across the MK3 district.

• Howe Park School

  700 m away
• Emerson Valley School

  900 m away
• Chestnuts Primary School

  1.1 km away

• Lord Grey Academy

  1.3 km away
• Shenley Brook End School

  1.7 km away
• Denbigh School

  3.3 km away

• Bletchley

  |

  2.4 km away
• Fenny Stratford

  |

  3.6 km away
• Milton Keynes Central

  |

  4.0 km away

The flood risk here is rated Very Low, based on Environment Agency data.