According to data from HM Land Registry, 1, Portmarnock Close, Milton Keynes sits on a plot of 426 m².

We have plot size data on 7 out of 9 other houses in the postcode and 1, Portmarnock Close, Milton Keynes sits on the 4th largest plot.

1, Portmarnock Close, Milton Keynes has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 24 Jun 2026.

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

According to HM Land Registry, 1, Portmarnock Close, Milton Keynes was last sold on 18th February 2015 for £262,500 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since February 2015, the market for similar properties has risen by 53.2%.

• Sold Feb 2015£262,500

According to the Land Registry and our network of Estate Agents, there have been 128 sales of properties similar to 1, Portmarnock Close, Milton Keynes within a radius of 690 metres since 2017.

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

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£360,000 | 4 Bed House23, Tees Way, Milton Keynes, MK3 7PU23, Tees Way, Milton Keynes, MK3 7PU
• Sold Aug 2025£405,000 | 3 Bed House109, Severn Way, Milton Keynes, MK3 7QE109, Severn Way, Milton Keynes, MK3 7QE
• Sold Jun 2025£440,000 | 4 Bed House11, Denham Close, Milton Keynes, MK3 7TJ11, Denham Close, Milton Keynes, MK3 7TJ
• Sold Jun 2025£405,000 | 3 Bed House12, Forches Close, Milton Keynes, MK4 2BE12, Forches Close, Milton Keynes, MK4 2BE
• Sold May 2024£393,500 | 4 Bed House30, Walton Heath, Milton Keynes, MK3 7RU30, Walton Heath, Milton Keynes, MK3 7RU
• Sold Nov 2023£418,000 | 4 Bed House46, Cropwell Bishop, Milton Keynes, MK4 2AH46, Cropwell Bishop, Milton Keynes, MK4 2AH
• Sold Oct 2023£305,000 | 4 Bed House16, Tyne Square, Milton Keynes, MK3 7QA16, Tyne Square, Milton Keynes, MK3 7QA
• Sold Mar 2023£420,000 | 4 Bed House162, Severn Way, Milton Keynes, MK3 7QB162, Severn Way, Milton Keynes, MK3 7QB
• Sold Aug 2022£420,000 | 4 Bed House22, Severn Way, Milton Keynes, MK3 7QQ22, Severn Way, Milton Keynes, MK3 7QQ
• Sold Sep 2021£325,000 | 4 Bed House182, Severn Way, Milton Keynes, MK3 7QB182, Severn Way, Milton Keynes, MK3 7QB
• Sold Aug 2021£390,000 | 4 Bed House9, Portmarnock Close, Milton Keynes, MK3 7TH9, Portmarnock Close, Milton Keynes, MK3 7TH
• 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 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 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 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

Portmarnock Close, Bletchley, Milton Keynes, MK3 has a total of 9 addresses. According to our analysis of all the public data, 1, Portmarnock Close, Milton Keynes is the 4th largest and the 3rd most expensive property on the street.

When compared to the postcode district it is £54k more expensive than the average property in MK3.

• 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

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.