Property data
Sale history
Date Paid price Annual growth After inflation
Sep 2024 £3,700,000 -1.5% -4.5%
Apr 2015 £4,250,000 11.8% 9.4%
Jul 2010 £2,500,000 0.5% -1.9%
Jun 2006 £2,450,000 32.0% 29.3%
Nov 2003 £1,180,000 8.4% 6.8%
Jun 1996 £649,000 824289.9% 799909.8%
Apr 1996 £112,325 na na
Floor plan

Archived estate agent floor plan for 2, Onslow Square.

Floorplan 2
View floorplan
Internal area
171 square metres (1,841 square feet) according to latest EPC inspection
Price per internal area

This property sold for £21,637 per square metre (£2,010 per square foot) in Sep 2024. Indexed forward to today's value, this is roughly £19,405 per square metre (£1,803 per square foot) .

Date Paid price Paid £/sqm Today's value Today's value £/sqm
Sep 2024 £3,700,000 £21,637 £3,318,325 £19,405
Apr 2015 £4,250,000 £24,854 £3,344,214 £19,557
Jul 2010 £2,500,000 £14,620 £2,864,548 £16,752
Jun 2006 £2,450,000 £14,327 £4,446,400 £26,002
Nov 2003 £1,180,000 £6,901 £2,579,207 £15,083
Jun 1996 £649,000 £3,795 £3,165,971 £18,514
Apr 1996 £112,325 £657 £741,801 £4,338

Calculated using the latest EPC internal area of 171 m². Earlier sale dates may not have had the same measured area available.

Valuation
The most recent sale price indexed forward to today's value is £3,318,325. This is one data point to inform the valuation. Another method is the valuation implied by what comparable homes are selling for. Homes in South Kensington are now selling for between £13,530 and £19,990 per square metre (£1,256 and £1,857 per square foot). Based on an internal area of 171 m², this implies a valuation between £2,314,000 and £3,418,000. Treat this as context only. For a valuation using hand-picked comparable sales, use the Advanced search tool — create a shortlist of similar condition homes, then export a valuation report.
Bedrooms
4
Type
Terrace
Council tax band
H
Archived listings
History:
Archived sales listing for 2 Onslow Square. Advertised on multiple portals. It was reduced on 05/03/2024. It last appeared Oct 2024.
Photos:

There are 25 archived estate agent listing photos for 2 Onslow Square.

Photos for 2 Onslow Square
View photos
Advertiser remarks:
  • 4 bedrooms
  • 2 bathrooms
Planning applications
Planning ref:
March 2025 LB/25/00282
Type:
Heritage application - conservation issues and listed buildings
Status:
Application approved
Address:
2 Onslow Square, LONDON,
Description:
Replacing the large bathroom with a smaller bathroom and shower; removal of a non-original plasterboard wall, shifting of an existing sliding door by 60cm within the same wall and building of a wall inside the rear room; as well as replacing non-original porcelain tiles in the entrance hall of the larger format stone imitation ones

Planning ref:
November 2024 LB/24/07664
Type:
Heritage application - conservation issues and listed buildings
Status:
Decision has yet to be made
Address:
2 Onslow Square, LONDON,
Description:
Creation of second shower room at first floor level. Installation of cornice in reception room and main bedroom overlaying the current one. Replacement of non-original tiles in entrance lobby with large format ones. Replacement of non-original ceramic mosaic tiles on external steps and landing with stone slabs or stone imitation porcelain tiles suitable for external use.

Planning ref:
July 2021 ARB/21/04228
Type:
Tree and hedge works
Status:
Application approved
Address:
2 Onslow Square, LONDON,
Description:
Pruning 1 x Indian Bean Tree.
EPC Inspections
Summary:
17 July 2024 - energy performance certificate grade D
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
marketed sale
Tenure:
Private rental
Property type:
Maisonette , has 7 habitable rooms. Estimated year built before 1900
Area:
171 sqm (1,841 square foot) total internal area
Comments:
Walls: Solid brick, as built, no insulation (assumed). Roof: Flat, no insulation (assumed). Heating: Boiler and radiators, mains gas.

Summary:
17 December 2013 - energy performance certificate grade E
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
Rental
Tenure:
Private rental
Property type:
1st floor flat in an apartment block with 2 storeys , has 5 habitable rooms. Estimated year built before 1900
Area:
170 sqm (1,830 square foot) total internal area
Comments:
Walls: Solid brick, as built, no insulation (assumed). Roof: Flat, no insulation (assumed). Heating: Community scheme.
Frequently asked questions

2 Onslow Square is worth whatever price a willing buyer and seller agree upon. However, the following can provide useful context.

  • HouseMetric estimates the most recent sale price indexed forward to today's value is £3,318,325.
  • Based on an internal area of 171 m² and recent prices in South Kensington, this implies a lower and upper quartile range from £2,314,000 to £3,418,000, using HouseMetric's implied valuation methodology.

According to HM Land Registry price paid data, 2 Onslow Square last sold for £3,700,000 in September 2024.

HouseMetric shows 2 Onslow Square as 171 m² (1,841 sq ft), based on the latest internal area data available for this property. The bedroom count is shown as 4 bedrooms. Bedroom numbers can come from a previous estate agency listing, an EPC record, or an estimate based on the size of the property.

The latest EPC rating shown by HouseMetric is D, from an inspection dated 17 July 2024. EPC information comes from the public Energy Performance Certificate data for England and Wales.

When we last checked, 2 Onslow Square was in council tax band H. Council Tax bands can change, so check the latest Valuation Office Agency Council Tax list.

2 Onslow Square is in postcode SW7 3NP, in South Kensington. You can also view HouseMetric's sold-price page for Onslow Square, SW7 3NP or analysis of the South Kensington property market.

HouseMetric combines HM Land Registry price paid data, Energy Performance Certificate data and Ordnance Survey/open data. The data were last updated 1 June 2026. Figures such as indexed values and local valuation ranges are calculated estimates for context, while official records can change as public datasets are updated.

For more detail on HouseMetric data sources, update frequency and valuation methods, see the HouseMetric FAQs.