Flat 10 81, Onslow Square, SW7 3LT
Flat 10 81 Onslow Square is a 143 m² / 1,539 sq ft flat in South Kensington. It sold for £2,500,000 in August 2025. Indexed forward to today's value, that sale is roughly £2,166k. Recent local prices imply a broad valuation context of £1,935k to £2,859k based on its internal area. The Land Registry and EPC data was last updated 1 June 2026.
- Sale history
-
Date Paid price Annual growth After inflation Aug 2025 £2,500,000 -0.4% -3.1% Nov 2011 £2,625,000 na na - Floor plan
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Archived estate agent floor plan for Flat 10 81, Onslow Square.
- Internal area
- 143 square metres (1,539 square feet) according to latest EPC inspection
- Price per internal area
-
This property sold for £17,482 per square metre (£1,624 per square foot) in Aug 2025. Indexed forward to today's value, this is roughly £15,144 per square metre (£1,407 per square foot) .
Date Paid price Paid £/sqm Today's value Today's value £/sqm Aug 2025 £2,500,000 £17,483 £2,165,587 £15,144 Nov 2011 £2,625,000 £18,357 £2,648,319 £18,520 Calculated using the latest EPC internal area of 143 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 £2,165,587. 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 143 m², this implies a valuation between £1,935,000 and £2,859,000. 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:
- 17 April 2023 - energy performance certificate grade E
- Certificate:
- View energy certificate on GOV.UK
- Reason for EPC:
- Rental
- Tenure:
- Private rental
- Property type:
- 3rd floor flat on the top floor in an apartment block with 1 storeys , has 4 habitable rooms. Estimated year built before 1900
- Area:
- 143 sqm (1,539 square foot) total internal area
- Comments:
- Walls: Solid brick, as built, no insulation (assumed). Roof: Flat, no insulation (assumed). Heating: Community scheme.
- Summary:
- 07 April 2011 - energy performance certificate grade C
- Reason for EPC:
- None
- Tenure:
- Owner-occupied
- Property type:
- None , has 5 habitable rooms. Estimated year built 2007 to onwards
- Area:
- 143 sqm (1,539 square foot) total internal area
- Comments:
Flat 10 81 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 £2,165,587.
- Based on an internal area of 143 m² and recent prices in South Kensington, this implies a lower and upper quartile range from £1,935,000 to £2,859,000, using HouseMetric's implied valuation methodology.
For more detail on HouseMetric data sources, update frequency and valuation methods, see the HouseMetric FAQs.