Our Data Sources
12, Onslow Gardens has 21 entries in the Land Registry , most recently in September 2021 and a single entry in the EPC database dated June 2021.
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 12, Onslow Gardens, we estimate a market value of £968,825 and a rental value of £3,238 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £858,102 and £2,868 per month respectively.
Plot Size
HM Land Registry records the plot of land for 12, Onslow Gardens as measuring 418 m2.
That makes it the 14th largest plot in the postcode, where all 17 other houses have recorded plot data.
Energy Efficiency
12, Onslow Gardens has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 23 Jun 2021.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
The most recent sale of 12, Onslow Gardens completed on 30th September 2021 at £975,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 the property has sold twice.
Values of comparable properties have dropped by 4.8% over the period since September 2021.
- Sold Sep 2021£975,000
- Sold Nov 1996£149,000
Similar Properties Sold Nearby
Over the past 2 years 131 properties similar to 12, Onslow Gardens have sold within a radius of 700 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 31st July 2025, was 30, Langham Gardens, London, N21 1DJ, a freehold house which sold for £850,000.
Read more about house prices in N21.
- Sold Jul 2025£850,000 | 4 Bed House30, Langham Gardens, London, N21 1DJ30, Langham Gardens, London, N21 1DJ
- Sold May 2025£935,000 | 4 Bed House32, Onslow Gardens, London, N21 1DX32, Onslow Gardens, London, N21 1DX
- Sold Jul 2024£938,000 | 4 Bed House38, Onslow Gardens, London, N21 1DX38, Onslow Gardens, London, N21 1DX
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 42 addresses on Onslow Gardens, London, N21, 12, Onslow Gardens comes out as the 7th largest and the 14th most expensive in our analysis of the public data.
It is also £191k more expensive than the average property across the N21 district.
More reading links
Schools Nearby
- Grange Park Primary School500 m away
- Eversley Primary School800 m away
- Merryhills Primary School900 m away
- Highlands School500 m away
- Enfield Grammar School1.6 km away
- Enfield County School for Girls1.7 km away
More reading links
Public Transport Nearby
- Grange Park|500 m away
- Enfield Chase|1.2 km away
- Winchmore Hill|1.2 km away
Available Internet Speeds
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.
