Flat 15, 42
Flat 15, 42
Description & Estimates
Flat 15, 42, Onslow Gardens is described in the public record as a period apartment with 1,625 ft2 of internal area.
Locally, apartments of this size normally have 3 bedrooms.
Our estimate of the sale value of Flat 15, 42, Onslow Gardens is £2,614,029 and its rental estimate is £8,762 per month, given the available information and assuming reasonable condition.
42, Onslow Gardens is a residential building on Onslow Gardens, London, SW7 and falls within the SW7 postal district and the London Borough of Kensington and Chelsea.
Our Data Sources
Flat 15, 42, Onslow Gardens has no records in the the Land Registry and a single entry in the EPC database dated January 2019.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 3 out of 5 and is considered of medium accuracy.
Price Range & Condition
The condition of a property plays an important role in determining its value, with the degree of impact varying by property type, size and location.
For Flat 15, 42, Onslow Gardens, we estimate a market value of £2,744,730 and a rental value of £9,200 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £2,431,047 and £8,149 per month respectively.
Recent Market Change
Over the last year, Flat 15, 42, Onslow Gardens has seen its estimated sale value move down by £5,557 (0.2%) and its estimated rental value increase by £461 per month (5.3%). This results in an estimated gross rental yield of 4.0%.
Energy Efficiency
Flat 15, 42, Onslow Gardens has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 02 Jan 2019.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Similar Properties Sold Nearby
Over the past 2 years 3 properties similar to Flat 15, 42, Onslow Gardens have sold within a radius of 240 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 15th August 2025, was Flat 10, 81, Onslow Square, London, SW7 3LT, a leasehold flat which sold for £2,500,000.
Read more about house prices in SW7.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Of the 504 addresses on Onslow Gardens, London, SW7, Flat 15, 42, Onslow Gardens comes out as the 73rd largest and the 99th most expensive in our analysis of the public data.
It is also £502k more expensive than the average property across the SW7 district.
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Schools Nearby
- 200mOur Lady of Victories RC Primary School
- 500mOratory Roman Catholic Primary School
- 600mBousfield Primary School
- 1.1kmSt. Thomas More Language College
- 1.6kmThe London Oratory School
- 1.6kmChelsea Academy
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Public Transport Nearby
From Flat 15, 42, Onslow Gardens, the nearest station is South Kensington, 400 metres away.
- 400mSouth Kensington
- 500mGloucester Road
- 1.1kmEarl's Court
Available Internet Speeds
Broadband here reaches ultrafast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Ultrafast broadband is available in the area.
Risk of Flooding
The flood risk here is rated very low, based on Environment Agency data.
