Flat 1, 46 Onslow Square, London, SW7 3NX is a leasehold flat built before 1900. The property offers approximately 1,173 square feet of living space and is situated on the 1st floor. In this location, apartments of similar size usually have four bedrooms.

The estimated current market value of the property is £2,218,763 , which equates to approximately £1,891 per square foot. It was last sold on 19 Feb 2016 for £2,550,000. Since then, the value has decreased by £331,237, representing a 13.0% decrease, or approximately 1.3% per year.

The current estimated value of £2,218,763 is:

  • 4.5% higher than the average property price on Onslow Square
  • 29.4% lower than the average in the SW7 3NX postcode area
  • and 174.1% higher than the average price for London as a whole

Based on EPC inspection history, this property has been mostly owner-occupied (3 out of 4 inspections). This suggests the property has typically been lived in by its owners, which often reflects longer-term residency and more consistent maintenance.

At the most recent EPC inspection on 9 June 2021, the property was recorded as rented.

View sold house prices in SW7 3NX

Building approximate location

About Property

Type
Flat
Built
before 1900
Interior Size
1173 sq ft
Tenure
Leasehold
Floor level
1st floor
Price (estimate)
£2,218,763
Price Per sq ft (estimate)
£1,891
Bedroom Count (estimate)
4 bedrooms

EPC Summary

Flat 1, 46 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NX has an Energy Performance Certificate (EPC) rating of C, based on the latest assessment carried out on 9 Jun 2021.

This property is heated by a shared community system (community scheme). Community heating means the heat is supplied from a central source serving multiple homes. A community heating scheme is used to provide hot water. The windows are single glazed.

The previous EPC assessment was conducted on 28 Nov 2011, when the property was rated D. Since then, the rating has improved to C, with the energy efficiency score increasing by 14.8%.

Since the previous assessment, several changes were observed:

  • The lighting was updated from no low energy lighting to low energy lighting in all fixed outlets, with efficiency improving from very poor to very good.
Heating Type
Community scheme
Good
Hot Water
Community scheme
Good
Walls
Solid brick, as built, no insulation (assumed)
Very Poor
Windows
Single glazed
Very Poor
Lighting
Low energy lighting in all fixed outlets
Very Good

Compared to SW7 3NX

8 th / 12
Price Rank
29% lower than average
6 th / 8
Size Rank
3% smaller than average
4 th / 8
Price Per Sq FT Rank
27% lower than average

Sale History

Today
£2,218,763
streetscan.co.uk estimate
-13 %
19 Feb 2016
£2,550,000
Leasehold
+87.5 %
30 Mar 2007
£1,360,000
Leasehold

Flood Risk for this Property

Flood risk from rivers and the sea
Very low flood risk
Flood risk from surface water
Medium flood risk
Surface water flood hazard
Medium

* Results are based on Environment Agency flood risk mapping for the property UPRN where available. They are indicative and should not be treated as a site-specific flood survey.

Flood risk from rivers and the sea

This property has very low flood risk from rivers and the sea.

River and sea flooding includes flooding caused by overflowing rivers, estuaries, tidal waters and coastal surges.

Flood risk from surface water

This property has medium surface water flood risk.

Surface water flooding can happen when heavy rainfall overwhelms drains, roads, gardens or other hard surfaces.

Flood depth indicators

Rivers and Sea
  • 0.2m depth No mapped risk
  • 0.3m depth No mapped risk
  • 0.6m depth No mapped risk
  • 0.9m depth No mapped risk
  • 1.2m depth No mapped risk
Surface Water
  • 0.2m depth Medium
  • 0.3m depth Medium
  • 0.6m depth Low
  • 0.9m depth Very low
  • 1.2m depth Very low

Area Insights

Similar Properties Sold Nearby

rooms: 3
size: 1206 sq ft
sale price: £2,650,000
sale date: 31 Oct 2018
rooms: 2
size: 1227 sq ft
sale price: £3,100,000
sale date: 23 Feb 2015
rooms: 4
size: 1184 sq ft
sale price: £425,000
sale date: 9 Feb 1998
rooms: 4
size: 1163 sq ft
sale price: £2,750,000
sale date: 20 Nov 2025
rooms: 4
size: 1184 sq ft
sale price: £2,200,000
sale date: 25 Jun 2025

Data Sources

The property at Flat 1, 46 Onslow Square, London, SW7 3NX appears two times in HM Land Registry records, with the latest transaction recorded on 19 Feb 2016. It also has five Energy Performance Certificate (EPC) records, the earliest dating back to 9 Jun 2021. We use this information to estimate the property's characteristics, flood risk profile and current market value.

This website uses public sector information from:

These datasets are licensed under the Open Government Licence v3.0 .

StreetScan.co.uk is not affiliated with, endorsed by, or associated with HM Land Registry, DESNZ, MHCLG, Defra or the Environment Agency.


Disclaimer: StreetScan.co.uk makes all reasonable efforts to ensure that the information provided on this website is current and accurate. However, no warranties or representations are made regarding its completeness, accuracy, suitability or reliability. Property values, flood risk assessments and other derived information are estimates based on publicly available datasets and should not be relied upon as professional, legal, surveying, environmental, financial or insurance advice. StreetScan.co.uk expressly disclaims all liability for any loss, damage, cost or expense arising directly or indirectly from the use of, or reliance upon, information provided on this website.