20, PORTMARNOCK WAY, GRANTHAM, NG31 9FL - £217,000

Based on the December 2024 Price Paid Data (released on 29th January 2025), the November 2024 House Price Index (released on 15th January 2025), and the December 2024 Energy Performance of Buildings Data (released on 31st January 2025). Sources

20 PORTMARNOCK WAY is a large detached house of 120m², built sometime between 2003 and 2006. It was last sold for £217,000 in March 2018, which was around 27% below the average March 2018 detached price in the South Kesteven local authority area. The most recent EPC inspection was August 2022, where the current energy rating was C, and the potential energy rating was B.

20 PORTMARNOCK WAY Sold Prices

Land registry data shows four sales for 20 PORTMARNOCK WAY since 1^st January 1995. The below table shows the price paid for the four sales, along with the average detached price in the South Kesteven local authority area for the corresponding sale date. All of the four 20 PORTMARNOCK WAY sales were for below the average price. The average price is sourced from the Office for National Statistics' House Price Index (HPI).

Date	Price	HPI Price	Variation from HPI
2018 29 MAR	£217,000	£298,432	27% below HPI
2015 29 MAY	£178,000	£239,807	26% below HPI
2007 7 SEP	£198,000	£247,620	20% below HPI
2005 22 DEC	£185,000	£211,327	12% below HPI

20 PORTMARNOCK WAY Price Paid vs. HPI Average

The below graph shows the average detached house price in the South Kesteven local authority area over time, sourced from the HPI. The four 20 PORTMARNOCK WAY sales between December 2005 and March 2018 have been plotted on the graph. A line has been extrapolated to show what the value of the property might have been over time, following each sale, had it maintained the same margin above or below the HPI (as a percentage). For example, the May 2015 sale was for 26% below the HPI. So the extrapolation line tracks at 26% below the HPI over time, until the March 2018 sale, where it falls to 27% below the HPI. The line then continues to track at 27% below the HPI.

How Large is 20 PORTMARNOCK WAY?

20 PORTMARNOCK WAY is 120m² according to the EPC inspection conducted in August 2022. This puts it in the largest 40% of detached houses in Grantham, based on EPC data. The below chart shows the distribution of detached houses by size in Grantham, and where 20 PORTMARNOCK WAY lies on this distribution: 60% of detached houses are smaller than 20 PORTMARNOCK WAY, and 38% of houses are larger. Note that EPC data is not available for all properties in Grantham.

20 PORTMARNOCK WAY: Plot and Title Map

20 PORTMARNOCK WAY sits on a plot of roughly 0.081 of an acre, or 327m². The below map shows the location of 20 PORTMARNOCK WAY, an approximate outline of the building(s), and the indicative extent of the property. The plot extent is a Land Registry INSPIRE Index Polygon, and it is important to note that a title may include more than one polygon, whereas only one polygon is shown on the map (the polygon which intersects with the position of 20 PORTMARNOCK WAY). The full extent of the land contained in any registered title can only be identified from the individual title plan. The maps on this page should not be relied upon to establish the extent of a title.

Where is 20 PORTMARNOCK WAY?

20 PORTMARNOCK WAY is located in GRANTHAM, in the NG31 postcode district. The below map shows the position of No. 20 on PORTMARNOCK WAY.