71 Onslow Square London SW7 3LS: house prices, rental estimates & market trends

Our Data Sources

71, Onslow Square has no recent¹ records in the Land Registry and a single entry in the EPC database dated March 2023.

We combine this information with public data of neighbouring properties to estimate the property attributes and values.

The local information is scored as 0 out of 5 and is considered of low accuracy.

1Sales dated prior to 2007 are shown, but are not used in our calculations.

What is an EPC?

What is the Land Registry?

What is the Office of National Statistics?

What is the Ordnance Survey?

Public data including the Land Registry and EPC Register is processed and republished under the Government Open Data Licence

All values are estimates based on available data. All data and other content are provided subject to our Terms & Conditions

Energy Efficiency

71, Onslow Square has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 21 Mar 2023.

The property is connected to mains gas and has partial double glazing. It is heated using community scheme.

Latest EPC Survey

21 Mar 2023

Latest EPC Survey

21 Mar 2023

What is an EPC?

EPC rating meaning and how to improve EPC ratings

How much value is added to your home when making it more energy efficient?

Source: MHCLG (July 2026)

Sold Prices

71, Onslow Square last changed hands on 31st January 2005, selling for £1,090,000. The transaction was logged as a leasehold flat by HM Land Registry.

In total it has sold twice since 1995.

Sold Jan 2005£1,090,000
Sold Jan 1997£610,000

The Bricks&Logic house price Heat Map

How accurate is Bricks&Logic?

How long does the land registry take to update?

Source: HM Land Registry (July 2026)

Explore Nearby Properties

The surrounding properties have an average estimated value of £3,879,010, ranging from £1,889,298 to £6,537,778.

Flat 3, 69 Onslow Square
3 Bed Flat | 6 m | Est. Value: £4,721,596
Flat 6, 69 Onslow Square
4 Bed Flat | 6 m | Est. Value: £5,287,968
Flat 7, 69 Onslow Square
2 Bed Flat | 6 m | Est. Value: £3,222,727
Flat 2, 69 Onslow Square
3 Bed Flat | 6 m | Est. Value: £4,687,583
Flat 4, 69 Onslow Square
3 Bed Flat | 6 m | Est. Value: £4,449,247
Flat 8, 69 Onslow Square
3 Bed Flat | 6 m | Est. Value: £3,645,953
Flat 1, 69 Onslow Square
3 Bed Flat | 6 m | Est. Value: £5,086,600
71 Sumner Place Mews
3 Bed House | 14 m | Est. Value: £2,095,512
75 Onslow Square
5 Bed House | 15 m | Est. Value: £6,537,778
69 Sumner Place Mews
3 Bed House | 16 m | Est. Value: £1,903,416
67 Sumner Place Mews
3 Bed House | 20 m | Est. Value: £1,889,298
24 Sumner Place
3 Bed House | 21 m | Est. Value: £3,020,436

Schools Nearby

Our Lady of Victories RC Primary School is the closest primary school to 71, Onslow Square at 300 metres away.

Our Lady of Victories RC Primary School
300 m away
Oratory Roman Catholic Primary School
400 m away
Marlborough Primary School
600 m away

St. Thomas More Language College is the closest secondary school at 900 metres.

St. Thomas More Language College
900 m away
Chelsea Academy
1.7 km away
The London Oratory School
1.8 km away

Schools and house prices

Source: Ofsted 2026

Public Transport Nearby

South Kensington
|
200 m away
Gloucester Road
|
600 m away
Knightsbridge
|
1.2 km away

Available Internet Speeds

Ofcom's latest figures show superfast broadband available in this area.

Superfast

20 mbps

Max upload

100 mbps

Max download

According to recent data from Ofcom, Superfast Broadband available in this area.

Max Upload

20 mbps

Max Download

100 mbps

Source: Ofcom (July 2026)

Risk of Flooding

Environment Agency data suggests this area has a Very Low risk of flooding.

Very Low floodriskin this area

Local Flood RiskVery Low

Source: Environment Agency (2024)

Our Data Sources

71, Onslow Square has no recent¹ records in the Land Registry and a single entry in the EPC database dated March 2023.

We combine this information with public data of neighbouring properties to estimate the property attributes and values.

The local information is scored as 0 out of 5 and is considered of low accuracy.

1Sales dated prior to 2007 are shown, but are not used in our calculations.

What is an EPC?

What is the Land Registry?

What is the Office of National Statistics?

What is the Ordnance Survey?

Public data including the Land Registry and EPC Register is processed and republished under the Government Open Data Licence

All values are estimates based on available data. All data and other content are provided subject to our Terms & Conditions

Energy Efficiency

71, Onslow Square has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 21 Mar 2023.

The property is connected to mains gas and has partial double glazing. It is heated using community scheme.

Latest EPC Survey

21 Mar 2023

Latest EPC Survey

21 Mar 2023

What is an EPC?

EPC rating meaning and how to improve EPC ratings

How much value is added to your home when making it more energy efficient?

Source: MHCLG (July 2026)

Sold Prices

71, Onslow Square last changed hands on 31st January 2005, selling for £1,090,000. The transaction was logged as a leasehold flat by HM Land Registry.

In total it has sold twice since 1995.

Sold Jan 2005£1,090,000
Sold Jan 1997£610,000

The Bricks&Logic house price Heat Map

How accurate is Bricks&Logic?

How long does the land registry take to update?

Source: HM Land Registry (July 2026)

Explore Nearby Properties

The surrounding properties have an average estimated value of £3,879,010, ranging from £1,889,298 to £6,537,778.

Flat 3, 69 Onslow Square
3 Bed Flat | 6 m | Est. Value: £4,721,596
Flat 6, 69 Onslow Square
4 Bed Flat | 6 m | Est. Value: £5,287,968
Flat 7, 69 Onslow Square
2 Bed Flat | 6 m | Est. Value: £3,222,727
Flat 2, 69 Onslow Square
3 Bed Flat | 6 m | Est. Value: £4,687,583
Flat 4, 69 Onslow Square
3 Bed Flat | 6 m | Est. Value: £4,449,247
Flat 8, 69 Onslow Square
3 Bed Flat | 6 m | Est. Value: £3,645,953
Flat 1, 69 Onslow Square
3 Bed Flat | 6 m | Est. Value: £5,086,600
71 Sumner Place Mews
3 Bed House | 14 m | Est. Value: £2,095,512
75 Onslow Square
5 Bed House | 15 m | Est. Value: £6,537,778
69 Sumner Place Mews
3 Bed House | 16 m | Est. Value: £1,903,416
67 Sumner Place Mews
3 Bed House | 20 m | Est. Value: £1,889,298
24 Sumner Place
3 Bed House | 21 m | Est. Value: £3,020,436

Schools Nearby

Our Lady of Victories RC Primary School is the closest primary school to 71, Onslow Square at 300 metres away.

Our Lady of Victories RC Primary School
300 m away
Oratory Roman Catholic Primary School
400 m away
Marlborough Primary School
600 m away

St. Thomas More Language College is the closest secondary school at 900 metres.

St. Thomas More Language College
900 m away
Chelsea Academy
1.7 km away
The London Oratory School
1.8 km away

Schools and house prices

Source: Ofsted 2026

Public Transport Nearby

South Kensington
|
200 m away
Gloucester Road
|
600 m away
Knightsbridge
|
1.2 km away

Available Internet Speeds

Ofcom's latest figures show superfast broadband available in this area.

Superfast

20 mbps

Max upload

100 mbps

Max download

According to recent data from Ofcom, Superfast Broadband available in this area.

Max Upload

20 mbps

Max Download

100 mbps

Source: Ofcom (July 2026)

Risk of Flooding

Environment Agency data suggests this area has a Very Low risk of flooding.

Very Low floodriskin this area

Local Flood RiskVery Low

Source: Environment Agency (2024)

Home Ownership Nearby

The recent census recorded whether a resident owned or rented their home.

In the area around 71, Onslow Square, 43.0% of property is privately owned outright and 40.5% is privately rented.

The graph below shows how this compares to Greater London and the rest of England & Wales.

This area

Greater London

England & Wales

Owned (Outright)

Owned (Mortgage)

Shared ownership

Rented (Social)

Rented (Private)

Source: ONS Census (2021)

Education Levels in the Area

The recent census recorded the highest level of education achieved by residents in the local area.

In the area around 71, Onslow Square, 26.0% of residents are recorded as possessing school level qualifications and 71.2% as possessing degree level qualifications.

The graph below shows how this compares to Greater London and the rest of England & Wales.