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Onslow Square, London

MyStreetCheck free street report: Onslow Square, London · 31 October 2026 · www.mystreetcheck.co.uk/london-greater-london/onslow-square/

House prices, sold prices and local information for SW7 3HY, SW7 3HU, SW7 3NJ.

Average price (last 12 months)
£2,431,667
6 sales
Average price (since 2016)
£2,287,709
78 sales
Price range
£230k – £6.7m
lowest to highest sale
Last sale
15 Jun 2026
SW7 3LT

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At a glance

House prices£2.43m average222% above the London average CrimeAbout averageLower crime than about 50% of neighbourhoods in England DeprivationLess deprived than mostDecile 7 of 10 (10 = least deprived) Flood riskNear a flood alert areaLower risk than a warning area Nearest station3 min walkSouth Kensington Underground Station Schools2 rated Good or betterWithin 1.5 miles, 1 Outstanding Ultrafast broadband100% of homesNational average 80% Freehold or leasehold99% leaseholdAcross 109 Land Registry sales Conservation areaChecking…Planning designations Green beltChecking…Planning designations Listed buildingsChecking…Within about 200 m Planning applicationsChecking…Within 500 m, last 90 days

78 property sales on Onslow Square, London have been recorded by HM Land Registry since 2016. In the last 12 months 6 homes sold here for an average of £2,431,667. Most sales here are flat homes, which have sold for an average of £2,269,368. Average sale prices fell from £2,707,225 in 2016 to £2,390,000 in 2026 (-12%), though averages on a single street can swing with the mix of homes sold. That is 222% above the London average of £755,818 over the same period. 16 homes here have sold more than once since 2016; 13 of them sold for more the second time. By property type, sales here have been 99% flat, 1% terraced. Recorded sale prices on Onslow Square range from £230,000 to £6,700,000. 1% of homes sold here were freehold and 99% leasehold.

House prices on Onslow Square compared

Onslow Square£2,431,667
SW7 postcode area£2,195,563
London£755,818
England & Wales£358,701

Average sale price over the last 12 months. See all SW7 house prices.

Average sale price by year

2016: £2,707,225 (4 sales)2016£2.71m2017: £2,036,000 (7 sales)2017£2.04m2018: £2,516,875 (8 sales)2018£2.52m2019: £3,105,124 (4 sales)2019£3.11m2020: £2,722,067 (6 sales)2020£2.72m2021: £2,100,500 (10 sales)2021£2.1m2022: £1,252,000 (4 sales)2022£1.25m2023: £2,592,000 (10 sales)2023£2.59m2024: £2,013,179 (14 sales)2024£2.01m2025: £2,113,571 (7 sales)2025£2.11m2026: £2,390,000 (4 sales)2026£2.39m

Tenure: 1% freehold and 99% leasehold across 109 recorded sales. Lease extension calculator.

Prices by property type

TypeSalesAverage priceLast sold
Flat77£2,269,36815 Jun 2026
Terraced1£3,700,00018 Sep 2024

Sold prices on Onslow Square

AddressDatePriceTypeTenure
Flat 4, 81, Onslow Square SW7 3LT 15 Jun 2026£3,700,000 FlatLeasehold
Flat 5, 51, Onslow Square SW7 3LR 8 May 2026£1,025,000 FlatLeasehold
Flat 8, 5, Onslow Square SW7 3NJ 24 Apr 2026£2,410,000 FlatLeasehold
Flat 4, 51, Onslow Square SW7 3LR 24 Feb 2026£2,425,000 FlatLeasehold
Flat 8, 20, Onslow Square SW7 3NP 23 Dec 2025£2,280,000 FlatLeasehold
Flat 2, 11, Onslow Square SW7 3NJ 20 Nov 2025£2,750,000 FlatLeasehold
Flat 11, Malvern Court, Onslow Square SW7 3HU 2 Oct 2025£1,725,000 FlatLeasehold
Flat 10, 81, Onslow Square SW7 3LT 15 Aug 2025£2,500,000 FlatLeasehold
Flat 9, 14, Onslow Square SW7 3NP 25 Jun 2025£2,200,000 FlatLeasehold
Flat 34, Malvern Court, Onslow Square SW7 3HY 5 Jun 2025£1,200,000 FlatLeasehold
Flat 31, Malvern Court, Onslow Square SW7 3HY 25 Apr 2025£1,850,000 FlatLeasehold
1, Malvern Court, Onslow Square SW7 3HU 11 Apr 2025£96,408 OtherLeasehold
Flat 21, Malvern Court, Onslow Square SW7 3HU 28 Mar 2025£1,490,000 FlatLeasehold
Flat 16, 27, Onslow Square SW7 3NH 12 Nov 2024£275,000 FlatLeasehold
Flat 2, 23, Onslow Square SW7 3NJ 1 Nov 2024£2,825,000 FlatLeasehold
Flat 1, 73, Onslow Square SW7 3LS 25 Oct 2024£1,732,000 FlatLeasehold
Flat 12, 25, Onslow Square SW7 3NJ 11 Oct 2024£560,000 FlatLeasehold
2, Onslow Square SW7 3NP 18 Sep 2024£3,700,000 TerracedLeasehold
109A, Onslow Square SW7 3LU 17 Sep 2024£1,275,000 FlatLeasehold
4, Onslow Square SW7 3NP 21 Aug 2024£4,100,000 OtherLeasehold
Flat 16, Malvern Court, Onslow Square SW7 3HU 31 Jul 2024£2,288,000 FlatLeasehold
Flat 16, Malvern Court, Onslow Square SW7 3HU 31 Jul 2024£2,288,000 FlatLeasehold
Flat 10, 14, Onslow Square SW7 3NP 24 Jul 2024£1,975,000 FlatLeasehold
Flat 3, 93, Onslow Square SW7 3LU 28 Jun 2024£2,100,000 FlatLeasehold
Flat 2, 69, Onslow Square SW7 3LS 14 Jun 2024£5,000,000 FlatLeasehold
Flat 12, 27, Onslow Square SW7 3NH 17 Apr 2024£1,400,000 FlatLeasehold
Flat 1, 24, Onslow Square SW7 3NS 6 Mar 2024£1,730,000 FlatLeasehold
Flat 14, 27, Onslow Square SW7 3NH 9 Feb 2024£1,493,500 FlatLeasehold
Flat 45, Malvern Court, Onslow Square SW7 3HY 16 Jan 2024£1,275,000 FlatLeasehold
Flat 2, 27, Onslow Square SW7 3NH 20 Nov 2023£1,050,000 FlatLeasehold
Flat 47, Malvern Court, Onslow Square SW7 3HY 16 Oct 2023£2,495,000 FlatLeasehold
Flat 6, 89, Onslow Square SW7 3LT 3 Oct 2023£2,600,000 FlatLeasehold
Flat 32, Malvern Court, Onslow Square SW7 3HY 29 Sep 2023£2,150,000 FlatLeasehold
Flat 8, 61, Onslow Square SW7 3LS 27 Sep 2023£2,750,000 FlatLeasehold
Flat 28, Malvern Court, Onslow Square SW7 3HY 11 Aug 2023£1,775,000 FlatLeasehold
Flat 11, 25, Onslow Square SW7 3NJ 28 Jul 2023£1,600,000 FlatLeasehold
Flat 2, 43, Onslow Square SW7 3LR 10 Jul 2023£3,750,000 FlatLeasehold
Flat 3, 23, Onslow Square SW7 3NJ 19 May 2023£2,800,000 FlatLeasehold
Flat 41, Malvern Court, Onslow Square SW7 3HY 20 Apr 2023£2,250,000 FlatLeasehold
Flat 9, 105, Onslow Square SW7 3LU 13 Jan 2023£5,500,000 FlatLeasehold
57, Onslow Square SW7 3LR 30 Sep 2022£17,000,000 OtherLeasehold
Flat 27, Malvern Court, Onslow Square SW7 3HY 21 Sep 2022£2,500,000 FlatLeasehold
61A, Onslow Square SW7 3LS 16 Sep 2022£718,000 FlatLeasehold
Flat 1, 17, Onslow Square SW7 3NJ 5 Aug 2022£3,600,000 FlatLeasehold
Flat 3, 55, Onslow Square SW7 3LR 22 Jul 2022£3,725,000 FlatLeasehold
Flat 4, Malvern Court, Onslow Square SW7 3HU 13 May 2022£1,440,000 FlatLeasehold
Flat 45, Malvern Court, Onslow Square SW7 3HY 17 Mar 2022£350,000 FlatLeasehold
Flat 11, 27, Onslow Square SW7 3NH 10 Mar 2022£1,130,000 FlatLeasehold
Flat 6, 27, Onslow Square SW7 3NH 14 Oct 2021£430,000 FlatLeasehold
Flat 3, 43, Onslow Square SW7 3LR 20 Sep 2021£4,100,000 FlatLeasehold
123

Sale prices are as recorded by HM Land Registry. Some sales (for example repossessions and company purchases) are listed but left out of the averages.

Sale history: homes sold more than once

AddressSalesChange
Flat 4, 81, Onslow Square £3,325,000 (Jun 2021) → £3,700,000 (Jun 2026) +11%
over 5 yrs
Flat 11, Malvern Court, Onslow Square £1,700,000 (Jun 2017) → £1,725,000 (Oct 2025) +1%
over 8 yrs
Flat 34, Malvern Court, Onslow Square £1,600,000 (Jan 2020) → £1,200,000 (Jun 2025) -25%
over 5 yrs
Flat 2, 23, Onslow Square £2,720,000 (Mar 2017) → £2,825,000 (Nov 2024) +4%
over 8 yrs
Flat 10, 14, Onslow Square £525,000 (Sep 2021) → £1,975,000 (Jul 2024) +276%
over 3 yrs
Flat 1, 24, Onslow Square £2,050,000 (May 2016) → £1,730,000 (Mar 2024) -16%
over 8 yrs
Flat 45, Malvern Court, Onslow Square £350,000 (Mar 2022) → £1,275,000 (Jan 2024) +264%
over 2 yrs
Flat 3, 23, Onslow Square £2,750,000 (Aug 2017) → £2,800,000 (May 2023) +2%
over 6 yrs
Flat 27, Malvern Court, Onslow Square £2,000,000 (Jan 2016) → £2,735,000 (Sep 2018) → £2,500,000 (Sep 2022) +25%
over 7 yrs
Flat 1, 17, Onslow Square £3,500,000 (Feb 2018) → £3,600,000 (Aug 2022) +3%
over 4 yrs
Flat 4, Malvern Court, Onslow Square £230,000 (Jun 2021) → £300,000 (Sep 2021) → £1,440,000 (May 2022) +526%
over under a year
Flat 11, 27, Onslow Square £1,300,000 (Feb 2017) → £1,130,000 (Mar 2022) -13%
over 5 yrs
Flat 5, Malvern Court, Onslow Square £400,000 (Mar 2019) → £642,403 (Jan 2020) +61%
over under a year
Flat 30, Malvern Court, Onslow Square £470,000 (Aug 2017) → £1,200,000 (Mar 2018) → £2,095,000 (Jul 2019) +346%
over 2 yrs
Flat 36, Malvern Court, Onslow Square £580,000 (Sep 2017) → £3,050,000 (Apr 2019) +426%
over 2 yrs
Flat 7, Malvern Court, Onslow Square £550,000 (Jun 2017) → £600,000 (Jan 2019) +9%
over 2 yrs

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Crime and flood risk near Onslow Square

Crime

1,203 crimes were reported within about a mile of Onslow Square in August 2026.

Crime level compared with the rest of England (10 = lowest crime):

12345678910

Lower crime than about 50% of neighbourhoods in England, based on recorded crime rates (English Indices of Deprivation 2025).

Anti-social behaviour208
Shoplifting208
Violence & sexual offences204
Other theft171
Vehicle crime98
Theft from the person90

Source: data.police.uk. Locations are approximate and cover the surrounding area, not just this street.

Flood risk

Onslow Square is in or near 6 Environment Agency flood areas:

  • Tidal Thames in the boroughs of Kensington and Chelsea, Hammersmith and Fulham, Ealing and Hounslow Flood alert area
  • Tidal Thames from Vauxhall Bridge to Battersea Bridge Flood alert area
  • Tidal Thames in the boroughs of Greenwich, Lewisham, Southwark, Lambeth and Wandsworth Flood alert area
  • Tidal Thames in the boroughs of Tower Hamlets, City of London, City of Westminster, Ken and Chelsea Flood alert area
  • Tidal Thames riverside from the Thames Barrier to Putney Bridge Flood alert area

Flood warning areas cover places at risk from rivers and the sea. Surface water risk isn't included. Check the long-term flood risk for a postcode on GOV.UK.

Schools near Onslow Square

SchoolTypeAgesOfstedDistance
Mander Portman Woodward School 524 pupils Other independent school 14–20 Report 0.2 mi
Our Lady of Victories RC Primary School 160 pupils Primary Roman Catholic 4–11 Good Report 0.2 mi
Glendower Preparatory School 292 pupils Other independent school 2–11 Report 0.2 mi
Queen's Gate School 371 pupils Other independent school 4–19 Report 0.2 mi
Lycee Francais Charles de Gaulle 3,420 pupils Other independent school 2–19 Report 0.2 mi
Falkner House 360 pupils Other independent school 2–11 Report 0.2 mi
Oratory Roman Catholic Primary School 210 pupils Primary Roman Catholic 5–11 Outstanding Report 0.3 mi
St Philip's School 79 pupils Other independent school Roman Catholic 4–13 Report 0.3 mi

Source: Department for Education (Get Information about Schools) and Ofsted. Grades are from each school's last graded inspection; newer inspections use report cards without a single overall grade, so check the full report. Distances are straight-line. Check catchment areas with the local council.

Getting around, shops and health

Train, tram & metro stations

  • West Brompton station 0.9 mi · 19 min walk
  • Imperial Wharf station 1.2 mi · 25 min walk
  • London Victoria station 1.4 mi · 27 min walk
  • South Kensington Underground Station 0.1 mi · 3 min walk
  • Gloucester Road Underground Station 0.3 mi · 7 min walk

Nearest bus stops

  • South Kensington Stn / Old Brompton Rd (Stop B, OLD BROMPTON ROAD) 2 min walk
  • Royal Brompton Hosp / Royal Marsden Hosp (Stop HM, FULHAM ROAD) 3 min walk
  • South Kensington Station (Stop D) 3 min walk
  • Onslow Square (Stop HV) 3 min walk

GP surgeries

  • Stanhope Mews Surgery
    7 Stanhope Mews West, London · 0.3 mi
  • Rosary Garden Surgery
    45 Rosary Gardens, London · 0.3 mi
  • Imperial College Health Centre
    40 Princes Gardens, London · 0.5 mi
  • The Chelsea Practice
    43 Chelsea Manor Street, London · 0.5 mi

Supermarkets

  • Tesco Express Tesco Kensington Old Brompton Rd Express · 0.1 mi
  • Little Waitrose Little Waitrose Old Brompton Road · 0.1 mi
  • Tesco Express Tesco South Kensington Express · 0.3 mi
  • Waitrose Waitrose Gloucester Road · 0.4 mi

Pharmacies

  • Dajani Pharmacy · 0.1 mi
  • Harley's Pharmacy · 0.1 mi
  • Stickland Chemist · 0.1 mi

Dentists

  • Thurloe Street Dental · 0.2 mi
  • Chelsea Green Dental Clinic · 0.5 mi
  • Chelsea Dental Studio · 0.5 mi

Sources: Department for Transport (NaPTAN), NHS England organisation data, and GEOLYTIX Retail Points (open data). Walking times are estimates from straight-line distance.

Area profile

Deprivation

12345678910

This neighbourhood is in decile 7 of 10 on the English Indices of Deprivation 2025, where 1 is the most deprived 10% of areas in England and 10 the least deprived.

Income10 of 10
Employment10 of 10
Education and skills10 of 10
Health and disability10 of 10
Crime6 of 10
Access to housing and services8 of 10
Living environment1 of 10

Each domain ranked in deciles across England (10 = least deprived).

Homes

HereEng & Wales
Owned34.4%62.5%
Private rented54.1%20.3%
Social rented11.4%17.1%
Households996

People

HereEng & Wales
Under 1513.5%17.4%
Aged 15–6472.8%64.1%
Aged 65+13.7%18.6%
Residents1,997

Broadband

HereUK
Superfast (30Mbit+)100%95%
Ultrafast (300Mbit+)100%80%
Gigabit-capable100%80%

Share of homes on this street's postcodes that can get each speed. UK figure is the average across all postcodes. Source: Ofcom Connected Nations.

Mobile signal

HereEng & Wales
4G indoors, all 4 networks100%89%
4G indoors, at least 1 network100%100%
4G outdoors, all 4 networks100%99%
Calls indoors, all 4 networks100%92%

Share of homes across Kensington and Chelsea with good coverage (Jul 2025). Signal varies street by street; check your exact address on Ofcom's checker. Source: Ofcom Connected Nations.

Neighbourhood figures cover the surrounding Lower Layer Super Output Area (about 1,500 residents). Sources: Census 2021 (ONS) and the English Indices of Deprivation 2025.

Energy ratings and home sizes on Onslow Square

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Who lives around Onslow Square

Ethnic group

HereKensington and Chelsea
White74.3%63.9%
Asian, Asian British or Asian Welsh13.9%11.9%
Other ethnic group5.2%9.8%
Mixed or Multiple ethnic groups5.1%6.6%
Black, Black British, Black Welsh, Caribbean or African1.5%7.8%

Religion

HereKensington and Chelsea
Christian49.4%48.4%
No religion28.5%24.9%
Not answered10.3%10%
Muslim5%11.6%
Jewish3.2%1.9%
Hindu1.1%1.1%
Buddhist0.9%1.1%
Other religion0.9%0.7%

Country of birth

HereKensington and Chelsea
Born in the UK38.7%45.9%
Born outside the UK61.3%54.1%

Highest qualification

HereKensington and Chelsea
Level 4 qualifications and above69%59.8%
Level 3 qualifications11.4%12.5%
No qualifications7.1%11.2%
Level 2 qualifications4.7%7.1%
Other qualifications3.4%3.1%
Level 1 and entry level qualifications3.2%4.4%
Apprenticeship1.2%1.9%

General health

HereKensington and Chelsea
Very good health68.4%59.8%
Good health24.2%26.7%
Fair health5.3%9.1%
Bad health1.3%3.3%
Very bad health0.8%1.1%

Cars or vans per household

HereKensington and Chelsea
No cars or vans in household58.1%58.3%
1 car or van in household32.2%32.7%
2 cars or vans in household8%7.4%
3 or more cars or vans in household1.7%1.6%

Source: Census 2021 (ONS), via Nomis. Percentages of usual residents or households, as recorded in March 2021.

Figures cover the surrounding neighbourhood (Lower Layer Super Output Area, about 1,500 residents). Full demographics of Kensington and Chelsea.

Planning and heritage near Onslow Square

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Planning applications near Onslow Square

Recent planning applications around Onslow Square from the council's planning register. Choose how far to look:

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