Flat 18 27, Onslow Square, SW7 3NH
Flat 18 27 Onslow Square is a 99 m² / 1,066 sq ft flat in South Kensington. It sold for £1,700,000 in October 2013. Indexed forward to today's value, that sale is roughly £1,407k. Recent local prices imply a broad valuation context of £1,326k to £1,977k based on its internal area. The Land Registry and EPC data was last updated 2 July 2026.
- Sale history
-
Date Paid price Annual growth After inflation Oct 2013 £1,700,000 18.7% 15.7% Jan 2004 £320,000 na na - Floor plan
-
Archived estate agent floor plan for Flat 18 27, Onslow Square.
- Internal area
- 99 square metres (1,066 square feet) according to latest EPC inspection
- Price per internal area
-
This property sold for £17,171 per square metre (£1,595 per square foot) in Oct 2013. Indexed forward to today's value, this is roughly £14,213 per square metre (£1,320 per square foot) .
Date Paid price Paid £/sqm Today's value Today's value £/sqm Oct 2013 £1,700,000 £17,172 £1,407,042 £14,213 Jan 2004 £320,000 £3,232 £671,449 £6,782 Calculated using the latest EPC internal area of 99 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 £1,407,042. 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 £13,390 and £19,970 per square metre (£1,243 and £1,855 per square foot). Based on an internal area of 99 m², this implies a valuation between £1,326,000 and £1,977,000. 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
- 2
- Type
- Flat
- Council tax band
- G
- Summary:
- 01 April 2026 - energy performance certificate grade D
- Certificate:
- View energy certificate on GOV.UK
- Reason for EPC:
- Rental
- Tenure:
- Private rental
- Property type:
- 2nd floor flat in an apartment block with 1 storeys , has 3 habitable rooms. Estimated year built 1930 to 1949
- Area:
- 99 sqm (1,066 square foot) total internal area
- Comments:
- Walls: System built, as built, no insulation (assumed). Roof: (another dwelling above). Heating: Community scheme.
- Summary:
- 15 November 2023 - energy performance certificate grade C
- Certificate:
- View energy certificate on GOV.UK
- Reason for EPC:
- Rental
- Tenure:
- Social rental
- Property type:
- 2nd floor flat in an apartment block with 1 storeys , has 4 habitable rooms. Estimated year built 1950 to 1966
- Area:
- 104 sqm (1,119 square foot) total internal area
- Comments:
- Walls: Cavity wall, as built, no insulation (assumed). Roof: (another dwelling above). Heating: Community scheme.
- Summary:
- 07 August 2013 - energy performance certificate grade C
- Certificate:
- View energy certificate on GOV.UK
- Reason for EPC:
- Rental
- Tenure:
- Private rental
- Property type:
- 2nd floor flat in an apartment block with 1 storeys , has 3 habitable rooms. Estimated year built 1950 to 1966
- Area:
- 99 sqm (1,066 square foot) total internal area
- Comments:
- Walls: Cavity wall, as built, no insulation (assumed). Roof: (another dwelling above). Heating: Community scheme.
Flat 18 27 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 £1,407,042.
- Based on an internal area of 99 m² and recent prices in South Kensington, this implies a lower and upper quartile range from £1,326,000 to £1,977,000, using HouseMetric's implied valuation methodology.
For more detail on HouseMetric data sources, update frequency and valuation methods, see the HouseMetric FAQs.