Our Data Sources
Flat 5, 51, Onslow Square has no records in the Land Registry and a single entry in the EPC database dated October 2025.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 1 out of 5 and is considered of low accuracy.
Price Range & Condition
In very good condition, we estimate Flat 5, 51, Onslow Square would be worth £1,803,420, with a potential rental value of £5,249 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £1,597,315, with a rental value of £4,649 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
Flat 5, 51, Onslow Square has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 17 Oct 2025.
The property is connected to mains gas and has single glazed windows. It is heated using community scheme.
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 15 sales of comparable properties within 270 metres of Flat 5, 51, Onslow Square since 2007.
Most recently, Flat 1, 24, Onslow Square, London, SW7 3NS, a leasehold flat, sold at £1,730,000 on the 6th March 2024.
Read more about house prices in SW7.
- Sold Mar 2024£1,730,000 | 2 Bed FlatFlat 1, 24, Onslow Square, London, SW7 3NSFlat 1, 24, Onslow Square, London, SW7 3NS
- Sold Mar 2021£1,700,000 | 2 Bed FlatFlat 3, 24, Onslow Square, London, SW7 3NSFlat 3, 24, Onslow Square, London, SW7 3NS
- Sold Feb 2021£1,280,000 | 2 Bed FlatFlat 2, 42, Thurloe Square, London, SW7 2SRFlat 2, 42, Thurloe Square, London, SW7 2SR
- Sold May 2020£6,700,000 | 2 Bed FlatFlat 2, 38, Onslow Square, London, SW7 3NSFlat 2, 38, Onslow Square, London, SW7 3NS
- Sold Aug 2019£1,100,000 | 2 Bed Flat74, Rose Square, London, SW3 6RS74, Rose Square, London, SW3 6RS
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 £4,036,050, ranging from £1,059,965 to £7,927,484.
- Flat 9, 51 Onslow Square
2 Bed Flat | 0 m | Est. Value: £1,648,836
- Flat 6, 51 Onslow Square
3 Bed Flat | 0 m | Est. Value: £3,198,082
- Flat 4, 51 Onslow Square
3 Bed Flat | 0 m | Est. Value: £3,222,769
- Basement
1 Bed Flat | 2 m | Est. Value: £1,059,965
- 53 Onslow Square
3 Bed Flat | 7 m | Est. Value: £2,854,372
Location Comparison
Our analysis of the public data ranks Flat 5, 51, Onslow Square as the 275th largest and the 181st most expensive of the 321 addresses on Onslow Square, London, SW7.
Against the SW7 postcode district average, it is £345k less expensive than the typical property.
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Schools Nearby
- Oratory Roman Catholic Primary School400 m away
- Our Lady of Victories RC Primary School400 m away
- Marlborough Primary School500 m away
- St. Thomas More Language College800 m away
- Chelsea Academy1.8 km away
- The London Oratory School1.9 km away
More reading links
Public Transport Nearby
- South Kensington|100 m away
- Gloucester Road|600 m away
- Knightsbridge|1.1 km away
Available Internet Speeds
Ofcom's latest figures show ultrafast broadband available in this area.
According to recent data from Ofcom, Ultrafast Broadband available in this area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
