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21, NEW PARK LANE, ASTON, STEVENAGE, SG2 7ED - £550,000

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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.

21 NEW PARK LANE is a small extended detached house of 136m², built sometime before 1900, which could now be worth an estimated £643,915. It was last sold for £550,000 in January 2020, which was around 27% below the average January 2020 detached price in the East Hertfordshire local authority area. The most recent EPC inspection was September 2019, where the current energy rating was D, and the potential energy rating was A.

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21 NEW PARK LANE Sold Prices

Land registry data shows four sales for 21 NEW PARK LANE since 1st January 1995. The below table shows the price paid for the four sales, along with the average detached price in the East Hertfordshire local authority area for the corresponding sale date. All of the four 21 NEW PARK LANE sales were for below the average price. The average price is sourced from the Office for National Statistics' House Price Index (HPI).

DatePriceHPI PriceVariation from HPI
2020
17 JAN
£550,000£756,827
down arrow
27% below HPI
2010
29 JAN
£450,000£484,262
down arrow
7% below HPI
2004
4 JUN
£365,000£416,506
down arrow
12% below HPI
2000
6 OCT
£180,000£278,124
down arrow
35% below HPI

21 NEW PARK LANE Price Paid vs. HPI Average

The below graph shows the average detached house price in the East Hertfordshire local authority area over time, sourced from the HPI. The four 21 NEW PARK LANE sales between October 2000 and January 2020 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 January 2010 sale was for 7% below the HPI. So the extrapolation line tracks at 7% below the HPI over time, until the January 2020 sale, where it falls to 27% below the HPI. The line then continues to track at 27% below the HPI.

21, NEW PARK LANE, ASTON, STEVENAGE, SG2 7ED: Price paid vs HM Land Registry's House Price Index

What might 21 NEW PARK LANE be worth now?

21 NEW PARK LANE might now be worth an estimated £643,915.

This is based on house price inflation of 17.1%, between January 2020 and July 2026, for detached houses, in the East Hertfordshire local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 17.1% inflationary increase is applied to the most recent sale price for 21 NEW PARK LANE of £550,000 on 17th January 2020. For the value to have increased from £550,000 to £643,915 over the five years and six months to July 2026, the following assumptions must hold true:

  • The value of 21 NEW PARK LANE has moved in line with the HPI for detached houses in the East Hertfordshire local authority area.
  • The January 2020 sale price of £550,000 represented a fair market value for the property.
  • The size, condition, and specification of 21 NEW PARK LANE has not materially changed since January 2020.
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 21 NEW PARK LANE?

21 NEW PARK LANE is 136m², which includes one extension, according to the EPC inspection conducted in September 2019. This puts it in the smallest 40% of detached houses houses in Aston, based on EPC data. The below chart shows the distribution of detached houses houses by size in Aston, and where 21 NEW PARK LANE lies on this distribution: 32% of detached houses houses are smaller than 21 NEW PARK LANE, and 68% of houses are larger. Note that EPC data is not available for all properties in Aston.

21, NEW PARK LANE, ASTON, STEVENAGE, SG2 7ED: Size of property relative to detached houses in Aston

21 NEW PARK LANE: Plot and Title Map

21 NEW PARK LANE sits on a plot of roughly 0.085 of an acre, or 342m². The below map shows the location of 21 NEW PARK 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 21 NEW PARK 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.

21, NEW PARK LANE, ASTON, STEVENAGE, SG2 7ED: Plot and title map

Where is 21 NEW PARK LANE?

21 NEW PARK LANE is located in ASTON, in the SG2 postcode district. The below map shows the position of No. 21 on NEW PARK LANE.

21, NEW PARK LANE, ASTON, STEVENAGE, SG2 7ED: Location map and indicative extent of plot

All property sales on NEW PARK LANE

Most recent sales first:

Limited data available
2025
19 SEP
£360,000
Limited data available
2024
22 JAN
£468,793
Limited data available
2024
22 JAN
£468,793
Full data available
2022
3 NOV
£360,000
Limited data available
2021
20 SEP
£590,000
Full data available
2021
28 JUN
£435,000
Full data available
2020
17 JAN
£550,000
Limited data available
2019
14 FEB
£387,500
Full data available
2015
20 NOV
£275,000
Limited data available
2015
9 NOV
£335,000
Limited data available
2015
20 FEB
£240,000
Full data available
2014
6 OCT
£316,500
Full data available
2011
18 NOV
£690,000
Full data available
2010
7 OCT
£250,000
Full data available
2010
29 JAN
£450,000
Full data available
2009
19 OCT
£205,000
Full data available
2009
6 FEB
£174,995
Limited data available
2007
1 MAR
£217,000
Limited data available
2006
29 JUN
£187,500
Limited data available
2004
19 NOV
£173,000
Full data available
2004
4 JUN
£365,000
Limited data available
2003
29 APR
£130,000
Limited data available
2003
29 APR
£130,000
Limited data available
2002
16 SEP
£139,950
Full data available
2002
12 SEP
£322,500
Full data available
2002
23 AUG
£190,000
Full data available
2002
20 JUL
£119,000
Limited data available
2002
19 JUN
£139,950
Limited data available
2001
19 OCT
£85,000
Full data available
2000
6 OCT
£180,000
Limited data available
2000
11 SEP
£105,000
Limited data available
2000
31 JUL
£95,000
Limited data available
1999
19 JAN
£74,950
Limited data available
1999
19 JAN
£74,950
Limited data available
1998
21 OCT
£130,000
Limited data available
1998
1 OCT
£77,000
Source: HM Land Registry Price Paid Data
Licence: Contains HM Land Registry data © Crown copyright and database right 2026. 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 2026. This data is licensed under the Open Government Licence v3.0.
Copyright statement: This information is subject to Crown copyright and database rights 2026 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 2026 Ordnance Survey 100026316. Conditions of use.