Our Data Sources
Flat 12, 21, Onslow Gardens has no recent1 records in the the Land Registry and a single entry in the EPC database dated February 2022.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 3 out of 5 and is considered of medium accuracy.
Price Range & Condition
In very good condition, we estimate Flat 12, 21, Onslow Gardens would be worth £2,150,614, with a potential rental value of £5,919 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £1,904,830, with a rental value of £5,242 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
Flat 12, 21, Onslow Gardens has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 07 Feb 2022.
The property is connected to mains gas and has single glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
Flat 12, 21, Onslow Gardens last changed hands on 5th January 1999, selling for £364,645. The transaction was logged as a leasehold flat by HM Land Registry.
That is its only recorded sale since 1995.
- Sold Jan 1999£364,645
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 18 sales of comparable properties within 230 metres of Flat 12, 21, Onslow Gardens across the last 2 years.
Most recently, Flat 12, 35, Onslow Gardens, London, SW7 3PY, a leasehold flat, sold at £1,850,000 on the 6th March 2026.
Read more about house prices in SW7.
- Sold Mar 2026£1,850,000 | 3 Bed FlatFlat 12, 35, Onslow Gardens, London, SW7 3PYFlat 12, 35, Onslow Gardens, London, SW7 3PY
- Sold Jul 2024£1,900,000 | 3 Bed Flat3, Rose Square, London, SW3 6RS3, Rose Square, London, SW3 6RS
- Sold Jan 2024£2,160,000 | 2 Bed FlatFlat 3, 24, Onslow Gardens, London, SW7 3ALFlat 3, 24, Onslow Gardens, London, SW7 3AL
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Our analysis of the public data ranks Flat 12, 21, Onslow Gardens as the 218th largest and the 123rd most expensive of the 504 addresses on Onslow Gardens, London, SW7.
Against the SW7 postcode district average, it is £44k less expensive than the typical property.
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Schools Nearby
- Our Lady of Victories RC Primary School300 m away
- Oratory Roman Catholic Primary School500 m away
- Bousfield Primary School600 m away
- St. Thomas More Language College1.1 km away
- Chelsea Academy1.5 km away
- The London Oratory School1.5 km away
More reading links
Public Transport Nearby
- South Kensington|400 m away
- Gloucester Road|500 m away
- Earl's Court|1.1 km away
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
