21 Onslow Avenue Mansions, Onslow Avenue
21 Onslow Avenue Mansions, Onslow Avenue
Description & Estimates
21 Onslow Avenue Mansions, Onslow Avenue, Richmond is recorded publicly as a period leasehold apartment across 688 ft2 of internal area.
Locally, apartments of this size normally have 2 bedrooms with a garden.
Our estimate of the sale value of 21 Onslow Avenue Mansions, Onslow Avenue, Richmond is £673,972 and its rental estimate is £2,619 per month, given the available information and assuming reasonable condition.
Onslow Avenue, Richmond, TW10 falls within the TW10 postal district, in the borough of Richmond upon Thames.
Our Data Sources
21 Onslow Avenue Mansions, Onslow Avenue, Richmond has a single entry in the Land Registry from July 2013 and a single entry in the EPC database dated March 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
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 21 Onslow Avenue Mansions, Onslow Avenue, Richmond, we estimate a market value of £707,671 and a rental value of £2,750 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £626,794 and £2,436 per month respectively.
Recent Market Change
Over the last year, 21 Onslow Avenue Mansions, Onslow Avenue, Richmond has seen its estimated sale value decline by £784 (0.1%) and its estimated rental value climb by £170 per month (6.5%). This results in an estimated gross rental yield of 4.7%.
Energy Efficiency
21 Onslow Avenue Mansions, Onslow Avenue, Richmond has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 27 Mar 2025.
The property is connected to mains gas and has single glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
The most recent sale of 21 Onslow Avenue Mansions, Onslow Avenue, Richmond completed on 15th July 2013 at £500,000 and was recorded by HM Land Registry as a leasehold flat.
Since 1995 this is the property's only sale.
Values of comparable properties have risen by 30.1% over the period since July 2013.
- Sold Jul 2013£500,000
Similar Properties Sold Nearby
Over the past 2 years 3 properties similar to 21 Onslow Avenue Mansions, Onslow Avenue, Richmond have sold within a radius of 340 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 15th August 2025, was Flat 4, 44, Onslow Road, Richmond, TW10 6QE, a leasehold flat which sold for £650,000.
Read more about house prices in TW10.
- Sold Aug 2025£650,000 | 2 Bed Flat44, Onslow RoadFlat 4, 44, Onslow Road, Richmond, TW10 6QE
- Sold May 2025£550,000 | 2 Bed FlatOnslow Avenue32 Onslow Avenue Mansions, Onslow Avenue, Richmond, TW10 6QD
- Sold Jul 2024£820,000 | 2 Bed FlatOnslow Avenue29 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
Of the 60 addresses on Onslow Avenue, Richmond, TW10, 21 Onslow Avenue Mansions, Onslow Avenue, Richmond comes out as the 46th largest and the 45th most expensive in our analysis of the public data.
It is also £459k less expensive than the average property across the TW10 district.
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
From 21 Onslow Avenue Mansions, Onslow Avenue, Richmond, the nearest station is Richmond (London), 600 metres away.
- 600mRichmond (London)
- 600mRichmond
- 1.2kmNorth Sheen
Available Internet Speeds
Internet coverage here is poor, based on recent Ofcom data, and connectivity may be weak or unavailable.
According to recent data from Ofcom, Slow/none broadband is available in the area.
Risk of Flooding
The flood risk here is rated very low, based on Environment Agency data.
