15 Onslow Avenue Mansions, Onslow Avenue
15 Onslow Avenue Mansions, Onslow Avenue
Description & Estimates







According to the public record, 15 Onslow Avenue Mansions, Onslow Avenue, Richmond is a period leasehold apartment with 1,011 ft2 of internal area.
Apartments of this size in this area normally have 3 bedrooms with a garden.
Based on available information, and assuming reasonable condition, the estimated sale value for 15 Onslow Avenue Mansions, Onslow Avenue, Richmond is £927,621 and the estimated rental value is £3,506 per month.
Onslow Avenue, Richmond, TW10 is located in the borough of Richmond upon Thames within the TW10 postal district.
Our Data Sources
15 Onslow Avenue Mansions, Onslow Avenue, Richmond has 41 entries in the Land Registry , most recently in October 2015 and a single entry in the EPC database dated September 2025.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 5 out of 5 and is considered of high accuracy.
Price Range & Condition
Decorative condition can have a big effect on a property's value and this effect varies depending on the type, size and location of the property.
If 15 Onslow Avenue Mansions, Onslow Avenue, Richmond is in very good condition we estimate a sale value of £974,002 and a rental value of £3,681 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £862,688 and a rental value of £3,261 per month.
Recent Market Change
Over the past 12 months, the estimated sale value of 15 Onslow Avenue Mansions, Onslow Avenue, Richmond has decreased by £9,072 (1.0%), while its estimated rental value has grown by £239 per month (6.8%). Based on current estimates, the property offers a gross rental yield of 4.5%.
Energy Efficiency
15 Onslow Avenue Mansions, Onslow Avenue, Richmond has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 26 Sep 2025.
The property is connected to mains gas and has single glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
According to HM Land Registry, 15 Onslow Avenue Mansions, Onslow Avenue, Richmond was last sold on 30th October 2015 for £975,000 and was recorded as a leasehold flat.
The property has had 4 sales since 1995.
Since October 2015, the market for similar properties has dropped by 0.8%.
- Sold Oct 2015£975,000
- Sold Oct 2006£525,000
- Sold May 2002£410,000
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 3 sales of properties similar to 15 Onslow Avenue Mansions, Onslow Avenue, Richmond within a radius of 350 metres over the last 2 years.
The most recent example is 10 Onslow Avenue Mansions, Onslow Avenue, Richmond, TW10 6QD, a leasehold flat which sold for £910,000 on the 5th January 2024.
Read more about house prices in TW10.
- Sold Jan 2024£910,000 | 3 Bed Flat10 Onslow Avenue Mansions, Onslow Avenue, Richmond, TW10 6QD10 Onslow Avenue Mansions, Onslow Avenue, Richmond, TW10 6QD
- Sold Oct 2022£1,025,000 | 3 Bed Flat31 Onslow Avenue Mansions, Onslow Avenue, Richmond, TW10 6QD31 Onslow Avenue Mansions, Onslow Avenue, Richmond, TW10 6QD
- Sold Jun 2022£815,000 | 3 Bed Flat9 Onslow Avenue Mansions, Onslow Avenue, Richmond, TW10 6QD9 Onslow Avenue Mansions, Onslow Avenue, Richmond, TW10 6QD
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Onslow Avenue, Richmond, TW10 has a total of 60 addresses. According to our analysis of all the public data, 15 Onslow Avenue Mansions, Onslow Avenue, Richmond is the 27th largest and the 26th most expensive property on the street.
When compared to the postcode district it is £205k less expensive than the average property in TW10.
More reading links
Schools Nearby
- 500mThe Vineyard School
- 600mSt Elizabeth's Catholic Primary School
- 700mMarshgate Primary School
- 700mChrist's Church of England Comprehensive Secondary School
- 1.8kmOrleans Park School
- 2.3kmGrey Court School
More reading links
Public Transport Nearby
The closest station to 15 Onslow Avenue Mansions, Onslow Avenue, Richmond is Richmond (London) station, which is 600 metres away.
- 600mRichmond (London)
- 600mRichmond
- 1.2kmNorth Sheen
Available Internet Speeds
According to recent data from Ofcom, there is poor internet coverage in this area which may result in poor or no internet connectivity.
According to recent data from Ofcom, Slow/none broadband is available in the area.
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be very low.

