Property/Postcode Data Search:

6, MILL STREET, UPTON, NORTHAMPTON, NN5 4DH - £250,000

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.

6 MILL STREET is a small semi-detached house of 100m², which could now be worth an estimated £307,947. It was last sold for £250,000 in November 2019, which was around 9% above the average November 2019 semi-detached price in the West Northamptonshire local authority area. The most recent EPC inspection was March 2010, where the current energy rating was B, and the potential energy rating was B.

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6 MILL STREET Sold Prices

Land registry data shows three sales for 6 MILL STREET since 1st January 1995. The below table shows the price paid for the three sales, along with the average semi-detached price in the West Northamptonshire local authority area for the corresponding sale date. All of the three 6 MILL STREET 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
2019
8 NOV
£250,000£230,301
up arrow
9% above HPI
2019
25 OCT
£265,000£227,902
up arrow
16% above HPI
2009
22 MAY
£195,950£138,754
up arrow
41% above HPI

6 MILL STREET Price Paid vs. HPI Average

The below graph shows the average semi-detached house price in the West Northamptonshire local authority area over time, sourced from the HPI. The three 6 MILL STREET sales between May 2009 and November 2019 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 2019 sale was for 16% above the HPI. So the extrapolation line tracks at 16% above the HPI over time, until the November 2019 sale, where it falls to 9% above the HPI. The line then continues to track at 9% above the HPI.

6, MILL STREET, UPTON, NORTHAMPTON, NN5 4DH: Price paid vs HM Land Registry's House Price Index

What might 6 MILL STREET be worth now?

6 MILL STREET might now be worth an estimated £307,947.

This is based on house price inflation of 23.2%, between November 2019 and July 2025, for semi-detached houses, in the West Northamptonshire local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 23.2% inflationary increase is applied to the most recent sale price for 6 MILL STREET of £250,000 on 8th November 2019. For the value to have increased from £250,000 to £307,947 over the six years and four months to July 2025, the following assumptions must hold true:

  • The value of 6 MILL STREET has moved in line with the HPI for semi-detached houses in the West Northamptonshire local authority area.
  • The November 2019 sale price of £250,000 represented a fair market value for the property.
  • The size, condition, and specification of 6 MILL STREET has not materially changed since November 2019.
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 6 MILL STREET?

6 MILL STREET is 100m² according to the EPC inspection conducted in March 2010. This puts it in the smallest 40% of semi-detached houses houses in Northampton, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Northampton, and where 6 MILL STREET lies on this distribution: 37% of semi-detached houses houses are smaller than 6 MILL STREET, and 63% of houses are larger. Note that EPC data is not available for all properties in Northampton.

6, MILL STREET, UPTON, NORTHAMPTON, NN5 4DH: Size of property relative to semi-detached houses houses in Northampton

6 MILL STREET: Plot and Title Map

6 MILL STREET sits on a plot of roughly 0.055 of an acre, or 224m². The below map shows the location of 6 MILL STREET, 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 6 MILL STREET). 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.

6, MILL STREET, UPTON, NORTHAMPTON, NN5 4DH: Plot and title map

Where is 6 MILL STREET?

6 MILL STREET is located in UPTON, in the NN5 postcode district. The below map shows the position of No. 6 on MILL STREET.

6, MILL STREET, UPTON, NORTHAMPTON, NN5 4DH: Location map and indicative extent of plot

All property sales on MILL STREET

Most recent sales first:

Full data available
2025
7 MAR
£445,000
Full data available
2019
8 NOV
£250,000
Full data available
2019
25 OCT
£265,000
Limited data available
2010
26 MAR
£310,000
Full data available
2009
23 OCT
£315,000
Limited data available
2009
31 JUL
£207,100
Limited data available
2009
30 JUN
£224,950
Full data available
2009
22 MAY
£195,950
Limited data available
2009
23 JAN
£189,950
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.
Source: Energy Performance of Buildings Data: England and Wales
Licence: Ordnance Survey and Royal Mail Copyright and Database Right Notice.
Licence: Open Government Licence v3.0.
Source: INSPIRE Polygons
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.
Licence: Open Government Licence v3.0.