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21, ONSLOW AVENUE, SUTTON, SM2 7ED - £790,000

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.

21 ONSLOW AVENUE is a very large extended detached house of 270m², built sometime between 1930 and 1949, which could now be worth an estimated £1,792,882. It was last sold for £790,000 in September 2004, which was around 76% above the average September 2004 detached price in the Sutton local authority area. The most recent EPC inspection was April 2023, where the current energy rating was C, and the potential energy rating was C.

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21 ONSLOW AVENUE Sold Prices

Land registry data shows one sale for 21 ONSLOW AVENUE since 1st January 1995. The below table shows the price paid for the one sale, along with the average detached price in the Sutton local authority area for the corresponding sale date. The average price is sourced from the Office for National Statistics' House Price Index (HPI).

DatePriceHPI PriceVariation from HPI
2004
1 SEP
£790,000£448,501
up arrow
76% above HPI

What might 21 ONSLOW AVENUE be worth now?

21 ONSLOW AVENUE might now be worth an estimated £1,792,882.

This is based on house price inflation of 126.9%, between September 2004 and May 2026, for detached houses, in the Sutton local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 126.9% inflationary increase is applied to the most recent sale price for 21 ONSLOW AVENUE of £790,000 on 1st September 2004. For the value to have increased from £790,000 to £1,792,882 over the 22 years and four months to May 2026, the following assumptions must hold true:

  • The value of 21 ONSLOW AVENUE has moved in line with the HPI for detached houses in the Sutton local authority area.
  • The September 2004 sale price of £790,000 represented a fair market value for the property.
  • The size, condition, and specification of 21 ONSLOW AVENUE has not materially changed since September 2004.
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 ONSLOW AVENUE?

21 ONSLOW AVENUE is 270m², which includes three extensions, according to the EPC inspection conducted in April 2023. This puts it in the largest 20% of detached houses in London, based on EPC data. The below chart shows the distribution of detached houses by size in London, and where 21 ONSLOW AVENUE lies on this distribution: 87% of detached houses are smaller than 21 ONSLOW AVENUE, and 12% of detached houses are larger. Note that EPC data is not available for all properties in London.

21, ONSLOW AVENUE, SUTTON, SM2 7ED: Size of property relative to detached houses in London

21 ONSLOW AVENUE: Plot

21 ONSLOW AVENUE sits on a plot of roughly 0.471 of an acre, or 1,908m².

Where is 21 ONSLOW AVENUE?

21 ONSLOW AVENUE is located in SUTTON, in the SM2 postcode district.

All property sales on ONSLOW AVENUE

Most recent sales first:

Limited data available
2024
31 JUL
£1,640,000
Limited data available
2023
4 MAY
£1,100,000
Limited data available
2022
30 NOV
£1,000,000
Limited data available
2022
10 FEB
£950,000
Limited data available
2021
14 DEC
£1,520,000
Limited data available
2020
15 JAN
£800,000
Full data available
2014
5 MAR
£885,000
Full data available
2013
27 JUN
£777,000
Limited data available
2013
27 JUN
£1,430,000
Full data available
2013
21 MAR
£1,260,000
Limited data available
2011
9 SEP
£630,000
Limited data available
2010
14 DEC
£1,175,000
Full data available
2008
27 AUG
£640,000
Limited data available
2007
26 OCT
£625,000
Full data available
2006
2 AUG
£635,000
Full data available
2006
7 FEB
£720,000
Limited data available
2005
25 NOV
£460,000
Limited data available
2004
30 NOV
£935,000
Limited data available
2004
1 SEP
£790,000
Limited data available
2004
20 MAY
£610,000
Limited data available
2002
9 AUG
£500,000
Limited data available
2002
2 APR
£385,000
Limited data available
2001
8 AUG
£375,000
Full data available
2001
8 JUN
£650,000
Full data available
1998
16 JUN
£310,000
Limited data available
1996
4 OCT
£167,000
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.
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 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.
Licence: Open Government Licence v3.0.