Our Data Sources
20, Seaforth Gardens has a single entry in the Land Registry from January 2026 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 3 out of 5 and is considered of medium accuracy.
Price Range & Condition
In very good condition, we estimate 20, Seaforth Gardens would be worth £2,150,252, with a potential rental value of £5,536 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £1,904,509, with a rental value of £4,904 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
20, Seaforth Gardens occupies a 844 m2 plot as recorded by HM Land Registry.
All 16 other houses in this postcode have recorded plot sizes, and this one ranks as the 7th largest.
Energy Efficiency
20, Seaforth Gardens has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 11 Sep 2025.
The property is connected to mains gas and has single glazed windows. It is heated using Boiler and radiators, mains gas, Boiler and radiators, mains gas.
Sold Prices
20, Seaforth Gardens last changed hands on 9th January 2026, selling for £2,100,000. The transaction was logged as a freehold house by HM Land Registry.
That is its only recorded sale since 1995.
The market for similar properties has dropped by 30.1% since January 2026.
- Sold Jan 2026£2,100,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 9 sales of comparable properties within 660 metres of 20, Seaforth Gardens across the last 2 years.
Most recently, 2, Woodcroft, London, N21 3QP, a freehold house, sold at £1,750,000 on the 22nd December 2025.
Read more about house prices in N21.
- Sold Dec 2025£1,750,000 | 6 Bed House2, Woodcroft, London, N21 3QP2, Woodcroft, London, N21 3QP
- Sold Feb 2025£2,500,000 | 6 Bed House45, Broad Walk, London, N21 3BL45, Broad Walk, London, N21 3BL
- Sold Jul 2016£1,700,000 | 6 Bed House18, Seaforth Gardens, London, N21 3BS18, Seaforth Gardens, London, N21 3BS
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Our analysis of the public data ranks 20, Seaforth Gardens as the 5th largest and the 13th most expensive of the 30 addresses on Seaforth Gardens, London, N21.
Against the N21 postcode district average, it is £1.317m more expensive than the typical property.
More reading links
Schools Nearby
- St Paul's CofE Primary School600 m away
- Eversley Primary School1.1 km away
- Highfield Primary School1.1 km away
- Winchmore School1.3 km away
- Highlands School1.6 km away
- Ashmole Academy1.8 km away
More reading links
Public Transport Nearby
- Winchmore Hill|500 m away
- Grange Park|1.2 km away
- Southgate|1.4 km away
Available Internet Speeds
Ofcom's latest figures show ultrafast broadband available in this area.
According to recent data from Ofcom, Ultrafast Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
