15, PORTMARNOCK WAY, GRANTHAM, NG31 9FL - £117,000

The information on this page is based on a number of underlying datasets, most of which are updated monthly. We maintain an update schedule which explains which version of each dataset we are currently relying on.

15 PORTMARNOCK WAY is a small semi-detached house of 83m², built sometime between 2003 and 2006, which could now be worth an estimated £198,939. It was last sold for £117,000 in February 2012, which was around 16% below the average February 2012 semi-detached price in the South Kesteven local authority area. The most recent EPC inspection was March 2021, where the current energy rating was C, and the potential energy rating was B.

15 PORTMARNOCK WAY Sold Prices

Land registry data shows two sales for 15 PORTMARNOCK WAY since 1^st January 1995. The below table shows the price paid for the two sales, along with the average semi-detached price in the South Kesteven local authority area for the corresponding sale date. Both of the two 15 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
2012 6 FEB	£117,000	£139,278	16% below HPI
2005 28 OCT	£127,995	£137,804	7% below HPI

15 PORTMARNOCK WAY Price Paid vs. HPI Average

The below graph shows the average semi-detached house price in the South Kesteven local authority area over time, sourced from the HPI. The two 15 PORTMARNOCK WAY sales from October 2005 and February 2012 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 October 2005 sale was for 7% below the HPI. So the extrapolation line tracks at 7% below the HPI over time, until the February 2012 sale, where it falls to 16% below the HPI. The line then continues to track at 16% below the HPI.

What might 15 PORTMARNOCK WAY be worth now?

15 PORTMARNOCK WAY might now be worth an estimated £198,939.

This is based on house price inflation of 70%, between February 2012 and June 2025, for semi-detached houses, in the South Kesteven local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 70% inflationary increase is applied to the most recent sale price for 15 PORTMARNOCK WAY of £117,000 on 6th February 2012. For the value to have increased from £117,000 to £198,939 over the twelve years and eight months to June 2025, the following assumptions must hold true:

• The value of 15 PORTMARNOCK WAY has moved in line with the HPI for semi-detached houses in the South Kesteven local authority area.
• The February 2012 sale price of £117,000 represented a fair market value for the property.
• The size, condition, and specification of 15 PORTMARNOCK WAY has not materially changed since February 2012.

How Large is 15 PORTMARNOCK WAY?

15 PORTMARNOCK WAY is 83m² according to the EPC inspection conducted in March 2021. This puts it in the smallest 30% of semi-detached houses houses in Grantham, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Grantham, and where 15 PORTMARNOCK WAY lies on this distribution: 21% of semi-detached houses houses are smaller than 15 PORTMARNOCK WAY, and 79% of houses are larger. Note that EPC data is not available for all properties in Grantham.

15 PORTMARNOCK WAY: Plot and Title Map

15 PORTMARNOCK WAY sits on a plot of roughly 0.053 of an acre, or 216m². The below map shows the location of 15 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 15 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 15 PORTMARNOCK WAY?

15 PORTMARNOCK WAY is located in GRANTHAM, in the NG31 postcode district. The below map shows the position of No. 15 on PORTMARNOCK WAY.