Property Data Search:

28, BLACKMILE LANE, GRENDON, NORTHAMPTON, NN7 1JR - £345,000

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.

28 BLACKMILE LANE is a midsized semi-detached house of 150m², built sometime between 1967 and 1975, which could now be worth an estimated £574,301. It was last sold for £345,000 in July 2015, which was around 128% above the average July 2015 semi-detached price in the North Northamptonshire local authority area. The most recent EPC inspection was November 2015, where the current energy rating was D, and the potential energy rating was B.

28 BLACKMILE LANE Sold Prices

Land registry data shows two sales for 28 BLACKMILE LANE since 1st January 1995. The below table shows the price paid for the two sales, along with the average semi-detached price in the North Northamptonshire local authority area for the corresponding sale date. Both of the two 28 BLACKMILE LANE sales were for above the average price. The average price is sourced from the Office for National Statistics' House Price Index (HPI).

DatePriceHPI PriceVariation from HPI
2015
24 JUL
£345,000£151,056
up arrow
128% above HPI
2003
22 AUG
£248,000£101,548
up arrow
144% above HPI

28 BLACKMILE LANE Price Paid vs. HPI Average

The below graph shows the average semi-detached house price in the North Northamptonshire local authority area over time, sourced from the HPI. The two 28 BLACKMILE LANE sales from August 2003 and July 2015 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 August 2003 sale was for 144% above the HPI. So the extrapolation line tracks at 144% above the HPI over time, until the July 2015 sale, where it falls to 128% above the HPI. The line then continues to track at 128% above the HPI.

28, BLACKMILE LANE, GRENDON, NORTHAMPTON, NN7 1JR: Price paid vs HM Land Registry's House Price Index

What might 28 BLACKMILE LANE be worth now?

28 BLACKMILE LANE might now be worth an estimated £574,301.

This is based on house price inflation of 66.5%, between July 2015 and February 2025, for semi-detached houses, in the North Northamptonshire local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 66.5% inflationary increase is applied to the most recent sale price for 28 BLACKMILE LANE of £345,000 on 24th July 2015. For the value to have increased from £345,000 to £574,301 over the ten years and five months to February 2025, the following assumptions must hold true:

  • The value of 28 BLACKMILE LANE has moved in line with the HPI for semi-detached houses in the North Northamptonshire local authority area.
  • The July 2015 sale price of £345,000 represented a fair market value for the property.
  • The size, condition, and specification of 28 BLACKMILE LANE has not materially changed since July 2015.
Disclaimer: Please note that this is a theoretical estimate based on assumptions which may or may not be correct. It should not be relied on for any purpose.

How Large is 28 BLACKMILE LANE?

28 BLACKMILE LANE is 150m² according to the EPC inspection conducted in November 2015. This puts it in the largest 50% of semi-detached houses houses in Grendon, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Grendon, and where 28 BLACKMILE LANE lies on this distribution: 50% of semi-detached houses houses are smaller than 28 BLACKMILE LANE, and 50% of houses are larger. Note that EPC data is not available for all properties in Grendon.

28, BLACKMILE LANE, GRENDON, NORTHAMPTON, NN7 1JR: Size of property relative to semi-detached houses houses in Grendon

28 BLACKMILE LANE: Plot and Title Map

28 BLACKMILE LANE sits on a plot of roughly 0.173 of an acre, or 702m². The below map shows the location of 28 BLACKMILE LANE, 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 28 BLACKMILE LANE). 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.

28, BLACKMILE LANE, GRENDON, NORTHAMPTON, NN7 1JR: Plot and title map

Where is 28 BLACKMILE LANE?

28 BLACKMILE LANE is located in GRENDON, in the NN7 postcode district. The below map shows the position of No. 28 on BLACKMILE LANE.

28, BLACKMILE LANE, GRENDON, NORTHAMPTON, NN7 1JR: Location map and indicative extent of plot

All property sales on BLACKMILE LANE

Most recent sales first:

Full data available
2024
6 SEP
£668,000
Limited data available
2023
4 JUL
£907,500
Full data available
2022
11 JUL
£389,995
Full data available
2021
7 SEP
£432,500
Limited data available
2019
16 SEP
£260,000
Limited data available
2019
6 FEB
£2,005
Limited data available
2019
6 FEB
£1,823
Limited data available
2019
6 FEB
£7,290
Limited data available
2019
6 FEB
£19,502
Limited data available
2019
6 FEB
£1,276
Limited data available
2019
6 FEB
£2,187
Limited data available
2019
6 FEB
£1,823
Limited data available
2019
6 FEB
£4,921
Limited data available
2019
6 FEB
£24,605
Limited data available
2019
6 FEB
£1,094
Full data available
2018
9 FEB
£419,950
Full data available
2015
24 JUL
£345,000
Full data available
2015
24 JUL
£270,000
Full data available
2015
22 MAY
£321,000
Full data available
2014
22 APR
£250,000
Full data available
2013
13 MAR
£302,500
Limited data available
2013
7 MAR
£337,500
Limited data available
2008
11 APR
£312,500
Full data available
2007
20 JUL
£597,000
Full data available
2003
19 DEC
£220,000
Full data available
2003
31 OCT
£230,000
Full data available
2003
22 AUG
£248,000
Limited data available
2003
17 JUN
£350,000
Limited data available
2002
10 JUL
£215,000
Full data available
2002
10 MAY
£143,000
Full data available
2002
24 JAN
£179,000
Limited data available
1999
26 JUL
£129,950
Limited data available
1998
24 JUL
£136,500
Limited data available
1995
27 OCT
£57,000
Source: HM Land Registry Price Paid Data
Licence: Contains HM Land Registry data © Crown copyright and database right 2025. This data is licensed under the Open Government Licence v3.0.
Source: HM Land Registry UK House Price Index
Licence: Contains HM Land Registry data © Crown copyright and database right 2025. This data is licensed under the Open Government Licence v3.0.
Copyright statement: This information is subject to Crown copyright and database rights 2025 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2025 Ordnance Survey 100026316. Conditions of use.