Flat 3, 20 Onslow Square, London, SW7 3NP is a leasehold flat built before 1900. The property offers approximately 657 square feet of living space and is situated on the 5th floor. In this location, apartments of similar size usually have two bedrooms.
The estimated current market value of the property is £1,417,755 , which equates to approximately £2,159 per square foot. It was last sold on 29 Jan 2004 for £600,000. Since then, the value has increased by £817,755, representing a 136.3% increase, or approximately 6.2% per year.
The current estimated value of £1,417,755 is:
This property has had 2 EPC inspections with recorded tenure information. It was recorded once as rented and once as owner-occupied, indicating a change in how it was used over time.
At the most recent EPC inspection on 8 May 2025, the property was recorded as rented.
Flat 3, 20 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NP has an Energy Performance Certificate (EPC) rating of C, based on the latest assessment carried out on 8 May 2025.
This property uses a gas-fired boiler and radiators, connected to the mains gas supply, as its main heating source. Hot water is provided from main heating system. The windows are fully double glazed.
The previous EPC assessment was conducted on 18 Jul 2022, when the property was rated D. Since then, the rating has improved to C, with the energy efficiency score increasing by 18%.
Since the previous assessment, several changes were observed:
Compared to other properties in SW7 3NP , this flat's estimated value ranks 18th out of 23. Based on price per square foot, it ranks 3rd out of 17 properties. This suggests a relatively high price per square foot, which may reflect quality, location, or recent upgrades. In terms of size, this home ranks 17th out of 17 properties in its postcode area.
The property at Flat 3, 20 Onslow Square, London, SW7 3NP appears two times in the Land Registry records, with the latest transaction recorded on 29 Jan 2004. It also has three Energy Performance Certificates (EPC) entries, the earliest dating back to 8 May 2025. We use this data, to estimate the property's characteristics and current market value.
This website uses public sector information from:HM Land Registry Price Paid Data, and
Energy Performance of Buildings Data published by the Department for Levelling Up, Housing and Communities (DLUHC), formerly the Ministry of Housing, Communities & Local Government (MHCLG).
These datasets are licensed under the Open
Government Licence v3.0.
This website is not affiliated with or endorsed by HM Land Registry or DLUHC.