1, Portmarnock Way, Grantham occupies a 219 m² plot as recorded by HM Land Registry.

Of the 29 other houses in this postcode, 27 have recorded plot sizes, and this one ranks as the 17th largest.

1, Portmarnock Way, Grantham has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 21 Jan 2010.

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

1, Portmarnock Way, Grantham last changed hands on 21st July 2010, selling for £129,000. 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 42.0% since July 2010.

• Sold Jul 2010£129,000
• Sold Aug 2005£149,995

Land Registry records and our Estate Agent network show 221 sales of comparable properties within 700 metres of 1, Portmarnock Way, Grantham since 2019.

Most recently, 57, Portrush Drive, Grantham, NG31 9GD, a freehold house, sold at £215,000 on the 21st November 2025.

Read more about house prices in NG31.

• Sold Nov 2025£215,000 | 3 Bed House57, Portrush Drive, Grantham, NG31 9GD57, Portrush Drive, Grantham, NG31 9GD
• Sold Oct 2025£197,500 | 3 Bed House38, Portmarnock Way, Grantham, NG31 9FL38, Portmarnock Way, Grantham, NG31 9FL
• Sold Sep 2025£218,000 | 3 Bed House14, Blairgowie Close, Grantham, NG31 9FJ14, Blairgowie Close, Grantham, NG31 9FJ
• Sold May 2025£252,000 | 3 Bed House24, Tom Childs Close, Grantham, NG31 9FR24, Tom Childs Close, Grantham, NG31 9FR
• Sold Mar 2025£225,000 | 3 Bed House23, Portmarnock Way, Grantham, NG31 9FL23, Portmarnock Way, Grantham, NG31 9FL
• Sold Dec 2024£236,000 | 3 Bed House3, Portmarnock Way, Grantham, NG31 9FL3, Portmarnock Way, Grantham, NG31 9FL
• Sold Oct 2024£235,000 | 3 Bed House6, Woodbrook, Grantham, NG31 9FT6, Woodbrook, Grantham, NG31 9FT
• Sold Sep 2024£260,000 | 3 Bed House10, Hoylake, Grantham, NG31 9FS10, Hoylake, Grantham, NG31 9FS
• Sold Sep 2024£210,000 | 3 Bed House49, Cavendish Way, Grantham, NG31 9FN49, Cavendish Way, Grantham, NG31 9FN
• Sold Aug 2024£190,000 | 3 Bed House16, Woodbrook, Grantham, NG31 9FT16, Woodbrook, Grantham, NG31 9FT
• Sold Aug 2024£186,000 | 3 Bed House18, Woodbrook, Grantham, NG31 9FT18, Woodbrook, Grantham, NG31 9FT
• Sold May 2024£172,500 | 3 Bed House19, Portmarnock Way, Grantham, NG31 9FL19, Portmarnock Way, Grantham, NG31 9FL
• Sold May 2023£200,000 | 3 Bed House47, Portrush Drive, Grantham, NG31 9GD47, Portrush Drive, Grantham, NG31 9GD
• Sold Nov 2022£218,000 | 3 Bed House14, Tom Childs Close, Grantham, NG31 9FR14, Tom Childs Close, Grantham, NG31 9FR
• Sold May 2022£230,000 | 3 Bed House49, Portrush Drive, Grantham, NG31 9GD49, Portrush Drive, Grantham, NG31 9GD
• Sold Mar 2022£260,380 | 3 Bed House32, Portrush Drive, Grantham, NG31 9GD32, Portrush Drive, Grantham, NG31 9GD
• Sold Dec 2021£235,000 | 3 Bed House35, Tom Childs Close, Grantham, NG31 9FR35, Tom Childs Close, Grantham, NG31 9FR
• Sold Dec 2021£240,000 | 3 Bed House4, Woodbrook, Grantham, NG31 9FT4, Woodbrook, Grantham, NG31 9FT
• Sold Jun 2020£172,000 | 3 Bed House3, Blairgowie Close, Grantham, NG31 9FJ3, Blairgowie Close, Grantham, NG31 9FJ
• Sold Sep 2019£195,000 | 3 Bed House9, Blairgowie Close, Grantham, NG31 9FJ9, Blairgowie Close, Grantham, NG31 9FJ

Our analysis of the public data ranks 1, Portmarnock Way, Grantham as the 20th largest and the 19th most expensive of the 29 addresses on Portmarnock Way, Grantham, NG31.

Against the NG31 postcode district average, it is £11k more expensive than the typical property.

• Belmont Community Primary School

  500 m away
• Belton Lane Community Primary School

  900 m away
• The Harrowby Church of England Primary School

  1.1 km away

• Kesteven and Grantham Girls' School

  1.9 km away
• The Priory Ruskin Academy

  2.0 km away
• The King's School, Grantham

  2.2 km away

• Grantham

  |

  2.8 km away
• Ancaster

  |

  8.8 km away
• Rauceby

  |

  12.5 km away

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