Our Data Sources
23, Portmarnock Way, Grantham has 21 entries in the Land Registry, most recently in March 2025 and a single entry in the EPC database dated December 2018.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 5 out of 5 and is considered of high accuracy.
1Sales dated prior to 2007 are shown, but are not used in our calculations.
Price Range & Condition
The condition of a property plays an important role in determining its value, with the degree of impact varying by property type, size and location.
For 23, Portmarnock Way, Grantham, we estimate a market value of £227,202 and a rental value of £1,024 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £201,236 and £907 per month respectively.
Plot Size
HM Land Registry records the plot of land for 23, Portmarnock Way, Grantham as measuring 205 m2.
That makes it the 20th largest plot in the postcode, where 27 of the 29 other houses have recorded plot data.
Energy Efficiency
23, Portmarnock Way, Grantham has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 02 Dec 2018.
The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).
Sold Prices
The most recent sale of 23, Portmarnock Way, Grantham completed on 31st March 2025 at £225,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 the property has sold twice.
Values of comparable properties have dropped by 15.8% over the period since March 2025.
- Sold Mar 2025£225,000
- Sold Nov 2005£141,995
Similar Properties Sold Nearby
Since 2018 293 properties similar to 23, Portmarnock Way, Grantham have sold within a radius of 740 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 21st November 2025, was 57, Portrush Drive, Grantham, NG31 9GD, a freehold house which sold for £215,000.
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 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
Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Explore Nearby Properties
The surrounding properties have an average estimated value of £241,633, ranging from £193,981 to £280,045.
- 25 Portmarnock Way
4 Bed House | 8 m | Est. Value: £280,045
- 21 Portmarnock Way
3 Bed House | 11 m | Est. Value: £222,961
- 19 Portmarnock Way
3 Bed House | 16 m | Est. Value: £222,261
- 17 Portmarnock Way
3 Bed House | 21 m | Est. Value: £193,981
- 27 Portmarnock Way
4 Bed House | 21 m | Est. Value: £259,889
Location Comparison
Of the 29 addresses on Portmarnock Way, Grantham, NG31, 23, Portmarnock Way, Grantham comes out as the 25th largest and the 24th most expensive in our analysis of the public data.
It is also £1k more expensive than the average property across the NG31 district.
More reading links
Schools Nearby
- Belmont Community Primary School500 m away
- Belton Lane Community Primary School900 m away
- The Harrowby Church of England Primary School1.1 km away
- Kesteven and Grantham Girls' School1.9 km away
- The Priory Ruskin Academy2.0 km away
- The King's School, Grantham2.2 km away
More reading links
Public Transport Nearby
- Grantham|2.8 km away
- Ancaster|8.8 km away
- Rauceby|12.5 km away
Available Internet Speeds
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast Broadband available in this area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.
