According to data from HM Land Registry, 40, Portmarnock Way, Grantham sits on a plot of 248 m².

We have plot size data on 27 out of 29 other houses in the postcode and 40, Portmarnock Way, Grantham sits on the 13th largest plot.

40, Portmarnock Way, Grantham has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 01 Sep 2021.

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, 40, Portmarnock Way, Grantham was last sold on 29th December 2011 for £118,700 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since December 2011, the market for similar properties has risen by 45.1%.

• Sold Dec 2011£118,700

According to the Land Registry and our network of Estate Agents, there have been 291 sales of properties similar to 40, Portmarnock Way, Grantham within a radius of 690 metres since 2020.

The most recent example is 57, Portrush Drive, Grantham, NG31 9GD, a freehold house which sold for £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 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 Jan 2025£795,000 | 3 Bed House65, Cavendish Way, Grantham, NG31 9FN65, Cavendish Way, Grantham, NG31 9FN
• Sold Nov 2024£198,000 | 3 Bed House45, Portrush Drive, Grantham, NG31 9GD45, Portrush Drive, Grantham, NG31 9GD
• Sold Oct 2024£210,000 | 3 Bed House27, Cavendish Way, Grantham, NG31 9FN27, Cavendish Way, Grantham, NG31 9FN
• Sold Oct 2024£235,000 | 3 Bed House6, Woodbrook, Grantham, NG31 9FT6, Woodbrook, Grantham, NG31 9FT
• Sold Sep 2024£200,000 | 3 Bed House5, Woodbrook, Grantham, NG31 9FT5, Woodbrook, Grantham, NG31 9FT
• Sold Sep 2024£210,000 | 3 Bed House49, Cavendish Way, Grantham, NG31 9FN49, Cavendish Way, Grantham, NG31 9FN
• Sold Aug 2024£188,500 | 3 Bed House26, Woodbrook, Grantham, NG31 9FT26, Woodbrook, Grantham, NG31 9FT
• 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 Nov 2022£200,000 | 3 Bed House63, Cavendish Way, Grantham, NG31 9FN63, Cavendish Way, Grantham, NG31 9FN
• Sold Oct 2022£200,000 | 3 Bed House12, Woodbrook, Grantham, NG31 9FT12, Woodbrook, Grantham, NG31 9FT
• 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 Jul 2020£163,000 | 3 Bed House7, Portmarnock Way, Grantham, NG31 9FL7, Portmarnock Way, Grantham, NG31 9FL
• Sold May 2020£175,000 | 3 Bed House34, Woodbrook, Grantham, NG31 9FT34, Woodbrook, Grantham, NG31 9FT

Portmarnock Way, Grantham, NG31 has a total of 29 addresses. According to our analysis of all the public data, 40, Portmarnock Way, Grantham is the 26th largest and the 26th most expensive property on the street.

When compared to the postcode district it is £4k less expensive than the average property in NG31.

• 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

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