Seaforth Gardens - N21 3BT
Key Postcode Insights
N21 3BT is a residential postcode situated on Seaforth Gardens, London, N21 with 14 addresses.
It ranks as the 218th largest and 511th most expensive of the 519 postcodes in the N21 area. The most common property type is a early-century house built between 1912 and 1935.
The postcode contains a total of 14 properties: 14 houses.
- Ave. Sale Price
- £2,002,873
- 10 Year change
- up 10.1%
- Ave. Rental Price
- £5,247pcm
- 10 Year change
- up 44.6%
- Ave. £ per ft²
- £883/ft²
- Ave. Gross Yield
- 3.1%/year/yr
Key Postcode Insights
N21 3BT is a residential postcode situated on Seaforth Gardens, London, N21 with 14 addresses.
It ranks as the 218th largest and 511th most expensive of the 519 postcodes in the N21 area. The most common property type is a early-century house built between 1912 and 1935.
The postcode contains a total of 14 properties: 14 houses.
- Ave. Sale Price
- £2,002,873
- 10 Year change
- up 10.1%
- Ave. Rental Price
- £5,247pcm
- 10 Year change
- up 44.6%
- Ave. £ per ft²
- £883/ft²
- Ave. Gross Yield
- 3.1%/year/yr
Explore Propertiesin N21 3BT
- 1 Seaforth Gardens
House
- 3 Seaforth Gardens
5 Bed Early-century House
- 5 Seaforth Gardens
House
- 7 Seaforth Gardens
4 Bed Early-century House
- 9 Seaforth Gardens
House
Sales Market Trends
The last sale in N21 3BT sold for £2,485,000 on 28th March 2025. Since then prices are down an average of 1.0%.
The current average value in the postcode is £2,002,873.
The N21 3BT Sales Market has increased by 10.1% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| June 2026 | -2.1% | £2,002,873 |
| June 2025 | 1% | £2,045,692 |
| June 2024 | -1.1% | £2,025,451 |
| June 2023 | -0.1% | £2,048,469 |
| June 2022 | 7.3% | £2,050,702 |
| June 2021 | 5.8% | £1,911,495 |
| June 2020 | -0.3% | £1,806,182 |
| June 2019 | -0.8% | £1,810,926 |
| June 2018 | -0.8% | £1,826,215 |
| June 2017 | 1.2% | £1,840,690 |
| June 2016 | 9.2% | £1,818,655 |
| June 2015 | 8.5% | £1,665,109 |
| June 2014 | 16.6% | £1,533,993 |
| June 2013 | 5.3% | £1,315,563 |
| June 2012 | 1.4% | £1,248,977 |
| June 2011 | 5.4% | £1,231,878 |
| June 2010 | 13% | £1,169,076 |
| June 2009 | -8.2% | £1,035,016 |
| June 2008 | 3% | £1,127,186 |
| June 2007 | 0% | £1,093,941 |
Rental Market Trends
The current average rental value in the postcode is £5,247.
The N21 3BT Rental Market has increased by 44.6% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| June 2026 | 3.2% | £5,247pcm |
| June 2025 | 4.7% | £5,085pcm |
| June 2024 | 6.1% | £4,856pcm |
| June 2023 | 12.6% | £4,576pcm |
| June 2022 | 8.4% | £4,065pcm |
| June 2021 | 0.9% | £3,750pcm |
| June 2020 | 1.6% | £3,716pcm |
| June 2019 | 0.7% | £3,658pcm |
| June 2018 | 0.7% | £3,632pcm |
| June 2017 | -0.6% | £3,608pcm |
| June 2016 | 2% | £3,629pcm |
| June 2015 | 4.3% | £3,559pcm |
| June 2014 | 4.2% | £3,413pcm |
| June 2013 | 3.1% | £3,275pcm |
| June 2012 | 4.7% | £3,178pcm |
| June 2011 | 8.1% | £3,035pcm |
| June 2010 | 10.4% | £2,809pcm |
| June 2009 | -2.2% | £2,544pcm |
| June 2008 | 6.3% | £2,600pcm |
| June 2007 | 0% | £2,447pcm |
Sales History
The last sale was on 28th March 2025 for £2,485,000 and since then the market in the area has decreased by 1.0%. The postcode has had a total of 12 sales since 1995.
N21 3BT has seen 1 sale in the last three years and no sales in the last twelve months.
- Sold Mar 2025£2,485,000 | 5 Bed House3, Seaforth Gardens, London, N21 3BT3, Seaforth Gardens, London, N21 3BT
- Sold Oct 2018£1,690,000 | 5 Bed House3, Seaforth Gardens, London, N21 3BT3, Seaforth Gardens, London, N21 3BT
- Sold Apr 2017£2,410,000 | 5 Bed House3, Seaforth Gardens, London, N21 3BT3, Seaforth Gardens, London, N21 3BT
- Sold Jul 2016£1,400,000 | 5 Bed House11, Seaforth Gardens, London, N21 3BT11, Seaforth Gardens, London, N21 3BT
- Sold May 2016£1,605,000 | 5 Bed House21, Seaforth Gardens, London, N21 3BT21, Seaforth Gardens, London, N21 3BT
Nearby Postcodes
N21 3BT is the 218th largest and the 511th most expensive postcode out of the 519 postcodes in the N21 area.
- N21 3BS, Seaforth Gardens, London, N21N21 3BS16 Addresses|48 m away
- N21 3BP, Branscombe Gardens, London, N21N21 3BP16 Addresses|116 m away
- N21 3BN, Branscombe Gardens, London, N21N21 3BN16 Addresses|155 m away
- N21 1HZ, Denleigh Gardens, London, N21N21 1HZ5 Addresses|227 m away
- N21 3BU, Broad Walk, London, N21N21 3BU10 Addresses|227 m away
Property Types
- 5 early-century houses built between 1912 and 1935
- 9 other addresses of unknown type
- early-century house (5)
- Unknown (9)
Energy Efficiency
- Energy Performance Certificate (EPC) surveys conducted for 5 properties.
- The most common rating is E.
- A (0)
- E (4)
- B (0)
- F (1)
- C (0)
- G (0)
- D (0)
- No EPC (9)
Top 3 Most Expensive Sales
- Sold Mar 2025£2,485,000 | 5 Bed House3, Seaforth Gardens, London, N21 3BT3, Seaforth Gardens, London, N21 3BT
- Sold Apr 2017£2,410,000 | 5 Bed House3, Seaforth Gardens, London, N21 3BT3, Seaforth Gardens, London, N21 3BT
- Sold Jan 2026£2,100,000 | 6 Bed House20, Seaforth Gardens, London, N21 3BS20, Seaforth Gardens, London, N21 3BS
Schools Nearby
- St Paul's CofE Primary School600 m away
- Eversley Primary School1.1 km away
- Highfield Primary School1.2 km away
- Winchmore School1.3 km away
- Highlands School1.6 km away
- Ashmole Academy1.7 km away
More reading links
Public Transport Nearby
The closest station to N21 3BT is Winchmore Hill station, which is 500 metres away.
- Winchmore Hill|500 m away
- Grange Park|1.2 km away
- Southgate|1.4 km away
- Palmers Green|1.7 km away
