SW7 3NJ · Onslow Square — sold prices, council tax and EPCs

What homes here actually sold for

Address	Sold	Price
Flat 2, 11 Onslow Square	Nov 2025	£2,750,000
Flat 2, 23 Onslow Square	Nov 2024	£2,825,000
Flat 12, 25 Onslow Square	Oct 2024	£560,000
Flat 11, 25 Onslow Square	Jul 2023	£1,600,000
Flat 3, 23 Onslow Square	May 2023	£2,800,000
Flat 1, 17 Onslow Square	Aug 2022	£3,600,000
Flat 1, 1 Onslow Square	Mar 2021	£2,300,000
Flat 1a, 25 Onslow Square	Oct 2020	£560,000
Flat 1, 17 Onslow Square	Feb 2018	£3,500,000
Flat 3, 23 Onslow Square	Aug 2017	£2,750,000
Flat 2, 23 Onslow Square	Mar 2017	£2,720,000
GARAGE Onslow Square	Jan 2017	£40,000,000
19 Onslow Square	Mar 2016	£4,400,000
Flat 4, 5 Onslow Square	Dec 2015	£2,850,000
Flat 2, 11 Onslow Square	Apr 2015	£2,750,000
Flat 3, 23 Onslow Square	Oct 2014	£2,850,000
Flat 10, 25 Onslow Square	Aug 2013	£2,600,000
Flat 8, 25 Onslow Square	Mar 2013	£3,600,000
Flat 5, 5 Onslow Square	Feb 2013	£2,300,000
Flat 8, 25 Onslow Square	Jan 2013	£2,000,000

Source: HM Land Registry Price Paid Data — the price recorded on the deed, not an estimate. Showing the 20 most recent of 59.

Median sale price by year

Year	Sales	Median
2017	3	£2,750,000
2018	1	£3,500,000
2020	1	£560,000
2021	1	£2,300,000
2022	1	£3,600,000
2023	2	£2,200,000
2024	2	£1,692,500
2025	1	£2,750,000

A year with one or two sales is those sales, not a trend. Source: HM Land Registry.

Council tax bands here

Band E — 2 homesBand F — 3 homesBand G — 25 homesBand H — 17 homes

12 homes here look banded above comparable neighbours.

Flat 3, 5 Onslow Square, London, Sw7 3nj	band H, neighbours typically G	26 of 41 lower
Flat 7, 25 Onslow Square, London, Sw7 3nj	band H, neighbours typically G	26 of 41 lower
Flat 12, 25 Onslow Square, London, Sw7 3nj	band H, neighbours typically G	26 of 41 lower
Flat 5, 25 Onslow Square, London, Sw7 3nj	band H, neighbours typically G	26 of 41 lower
Flat 4, 25 Onslow Square, London, Sw7 3nj	band H, neighbours typically G	26 of 41 lower
Flat 5 At 17 Onslow Square, London, Sw7 3nj	band H, neighbours typically G	26 of 41 lower
Flat 6, 5 Onslow Square, London, Sw7 3nj	band H, neighbours typically G	26 of 41 lower
Flat 4, 17 Onslow Square, London, Sw7 3nj	band H, neighbours typically G	26 of 41 lower
Flat 7, 5 Onslow Square, London, Sw7 3nj	band H, neighbours typically G	26 of 41 lower
Flat 1, 17 Onslow Square, London, Sw7 3nj	band H, neighbours typically G	26 of 41 lower
Flat 8, 25 Onslow Square, London, Sw7 3nj	band H, neighbours typically G	26 of 41 lower
Flat 8, 5 Onslow Square, London, Sw7 3nj	band H, neighbours typically G	26 of 41 lower

Worth checking rather than acting on. A review can move a band down and it can move one up, and you can check any address free at gov.uk. This compares like with like - numbered houses against numbered houses, flats against flats - because a named house on the same street is usually simply a bigger house.

Source: Valuation Office Agency. Bands are 1991 values in England, 2003 in Wales.

Energy efficiency

C — 17D — 11E — 4

Typical home here: 107 m², 3 habitable rooms — median of 32 assessed homes.

Source: the EPC register. Only homes assessed since 2008 appear, so this is a sample of the street, not all of it.

On the market now

Address		Asking
Onslow Square, South Kensington, SW7	2 bed	£2,650,000
Onslow Square, London, SW7	2 bed	£2,600,000
Onslow Square	3 bed	—
Onslow Square, London SW7	2 bed	—
Onslow Square, South Kensington, London	2 bed	—
Onslow Square, London, SW7	3 bed	—

Asking prices as currently advertised. An asking price is what is wanted, not what is paid.