Our Data Sources
Flat 1, 40, Onslow Gardens has 31 entries in the Land Registry, most recently in December 2007 and a single entry in the EPC database dated May 2025.
We combine this information with that 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.
1Sales dated prior to 2007 are shown, but are not used in our calculations.
Price Range & Condition
Decorative condition can have a big effect on a property's value and this effect varies depending on the type, size and location of the property.
If Flat 1, 40, Onslow Gardens is in very good condition we estimate a sale value of £4,839,880 and a rental value of £14,685 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £4,286,751 and a rental value of £13,007 per month.
Energy Efficiency
Flat 1, 40, Onslow Gardens has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 02 May 2025.
The property is connected to mains gas and has some secondary glazing. It is heated using a boiler and radiators (mains gas).
Sold Prices
According to HM Land Registry, Flat 1, 40, Onslow Gardens was last sold on 7th December 2007 for £2,760,000 and was recorded as a leasehold flat.
The property has had 3 sales since 1995.
Since December 2007, the market for similar properties has risen by 36.9%.
- Sold Dec 2007£2,760,000
- Sold May 1997£682,500
- Sold Mar 1996£595,000
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 4 sales of properties similar to Flat 1, 40, Onslow Gardens within a radius of 230 metres since 2009.
The most recent example is Flat A, 84, Onslow Gardens, London, SW7 3BS, a leasehold flat which sold for £5,000,000 on the 21st July 2025.
Read more about house prices in SW7.
- Sold Jul 2025£5,000,000 | 4 Bed FlatFlat A, 84, Onslow Gardens, London, SW7 3BSFlat A, 84, Onslow Gardens, London, SW7 3BS
- Sold Sep 2013£5,750,000 | 3 Bed Flat28, Rose Square, London, SW3 6RS28, Rose Square, London, SW3 6RS
- Sold Jul 2013£3,725,000 | 4 Bed FlatFlat 2, 94, Queen's Gate, London, SW7 5ABFlat 2, 94, Queen's Gate, London, SW7 5AB
- Sold Jul 2009£1,950,000 | 4 Bed FlatFlat 1A, Clareville Court , Clareville Grove, London, SW7 5ATFlat 1A, Clareville Court , Clareville Grove, London, SW7 5AT
Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Explore Nearby Properties
The surrounding properties have an average estimated value of £1,366,869, ranging from £558,045 to £2,917,850.
- 13 Onslow Mews West
4 Bed House | 6 m | Est. Value: £2,917,850
- 14 Onslow Mews West
3 Bed House | 9 m | Est. Value: £2,011,173
- Basement
3 Bed Flat | 9 m | Est. Value: £2,122,880
- Flat 2, 39 Onslow Gardens
1 Bed Flat | 12 m | Est. Value: £786,225
- Flat 6, 39 Onslow Gardens
1 Bed Flat | 12 m | Est. Value: £594,879
Location Comparison
Onslow Gardens, London, SW7 has a total of 504 addresses. According to our analysis of all the public data, Flat 1, 40, Onslow Gardens is the 27th largest and the 20th most expensive property on the street.
When compared to the postcode district it is £2.547m more expensive than the average property in SW7.
More reading links
Schools Nearby
- Our Lady of Victories RC Primary School200 m away
- Oratory Roman Catholic Primary School500 m away
- Bousfield Primary School600 m away
- St. Thomas More Language College1.1 km away
- The London Oratory School1.6 km away
- Chelsea Academy1.6 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
According to recent data from Ofcom, Ultrafast Broadband is available in this area.
According to recent data from Ofcom, Ultrafast Broadband available in this area.
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.
