St. Mary's Avenue - N3 1SN
Key Postcode Insights
N3 1SN is a residential postcode situated on St. Mary's Avenue, London, N3 with 64 addresses.
It ranks as the 556th largest and 362nd most expensive of the 571 postcodes in the N3 area. The most common property type is a period flat built between 1800 and 1911.
The postcode contains a total of 64 properties: 31 houses and 33 flats.
- Ave. Sale Price
- £874,268
- 10 Year change
- down 3.1%
- Ave. Rental Price
- £2,981pcm
- 10 Year change
- up 33.7%
- Ave. £ per ft²
- £633/ft²
- Ave. Gross Yield
- 4.1%/year/yr
Key Postcode Insights
N3 1SN is a residential postcode situated on St. Mary's Avenue, London, N3 with 64 addresses.
It ranks as the 556th largest and 362nd most expensive of the 571 postcodes in the N3 area. The most common property type is a period flat built between 1800 and 1911.
The postcode contains a total of 64 properties: 31 houses and 33 flats.
- Ave. Sale Price
- £874,268
- 10 Year change
- down 3.1%
- Ave. Rental Price
- £2,981pcm
- 10 Year change
- up 33.7%
- Ave. £ per ft²
- £633/ft²
- Ave. Gross Yield
- 4.1%/year/yr
Explore Propertiesin N3 1SN
- Albany
5 Bed Mid-century House
- Belvin House
Unknown
- Formentor
4 Bed Mid-century House
- Gloralan Lodge
Unknown
- Heathfield
5 Bed Period House
Sales Market Trends
The last sale in N3 1SN sold for £1,350,000 on 19th December 2025. Since then prices are down an average of 2.8%.
The current average value in the postcode is £874,268.
The N3 1SN Sales Market has decreased by 3.1% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| June 2026 | -3.9% | £874,268 |
| June 2025 | -0.6% | £909,948 |
| June 2024 | -0.8% | £915,871 |
| June 2023 | -0.8% | £923,588 |
| June 2022 | 3.2% | £931,039 |
| June 2021 | 2.3% | £902,240 |
| June 2020 | 2% | £882,360 |
| June 2019 | -0.8% | £864,706 |
| June 2018 | -2.2% | £872,111 |
| June 2017 | -1.2% | £891,438 |
| June 2016 | 7.1% | £902,442 |
| June 2015 | 7.2% | £842,590 |
| June 2014 | 13.8% | £785,724 |
| June 2013 | 5% | £690,408 |
| June 2012 | 7.4% | £657,401 |
| June 2011 | 6.7% | £611,849 |
| June 2010 | 10.1% | £573,441 |
| June 2009 | -8.8% | £520,883 |
| June 2008 | 2.4% | £571,213 |
| June 2007 | 0% | £557,905 |
Rental Market Trends
The current average rental value in the postcode is £2,981.
The N3 1SN Rental Market has increased by 33.7% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| June 2026 | 2.8% | £2,981pcm |
| June 2025 | 3% | £2,900pcm |
| June 2024 | 4.6% | £2,814pcm |
| June 2023 | 11.7% | £2,691pcm |
| June 2022 | 10.2% | £2,409pcm |
| June 2021 | -1.2% | £2,187pcm |
| June 2020 | 2% | £2,214pcm |
| June 2019 | 1.1% | £2,171pcm |
| June 2018 | 0% | £2,148pcm |
| June 2017 | -3.6% | £2,149pcm |
| June 2016 | 0.8% | £2,230pcm |
| June 2015 | 5.4% | £2,213pcm |
| June 2014 | 2.1% | £2,100pcm |
| June 2013 | 2.8% | £2,057pcm |
| June 2012 | 6.3% | £2,001pcm |
| June 2011 | 7.1% | £1,882pcm |
| June 2010 | 5% | £1,757pcm |
| June 2009 | -6.7% | £1,674pcm |
| June 2008 | 6.5% | £1,795pcm |
| June 2007 | 0% | £1,686pcm |
Sales History
The last sale was on 19th December 2025 for £1,350,000 and since then the market in the area has decreased by 2.8%. The postcode has had a total of 73 sales since 1995.
N3 1SN has seen 3 sales in the last three years and 2 sales in the last twelve months.
- Sold Dec 2025£1,350,000 | 5 Bed House19, St. Mary's Avenue, London, N3 1SN19, St. Mary's Avenue, London, N3 1SN
- Sold Nov 2025£385,000 | 2 Bed FlatFlat E, 13, St. Mary's Avenue, London, N3 1SNFlat E, 13, St. Mary's Avenue, London, N3 1SN
- Sold Jun 2023£1,185,000 | 4 Bed House38, St. Mary's Avenue, London, N3 1SN38, St. Mary's Avenue, London, N3 1SN
- Sold Aug 2021£396,000 | 2 Bed FlatFlat D, 1, St. Mary's Avenue, London, N3 1SNFlat D, 1, St. Mary's Avenue, London, N3 1SN
- Sold Mar 2021£875,000 | 5 Bed House34, St. Mary's Avenue, London, N3 1SN34, St. Mary's Avenue, London, N3 1SN
Nearby Postcodes
N3 1SN is the 556th largest and the 362nd most expensive postcode out of the 571 postcodes in the N3 area.
- N3 1SW, St. Mary's Avenue, London, N3N3 1SW6 Addresses|14 m away
- N3 1ST, Cyprus Avenue, London, N3N3 1ST29 Addresses|84 m away
- N3 1UL, Hendon Avenue, London, N3N3 1UL18 Addresses|127 m away
- N3 1UP, Freston Park, London, N3N3 1UP11 Addresses|128 m away
- N3 1SL, Hendon Lane, London, N3N3 1SL6 Addresses|139 m away
Property Types
- 16 period houses built between 1800 and 1911
- 33 period flats built between 1800 and 1911
- 5 mid-century houses built between 1936 and 1979
- 10 other addresses of unknown type
- period house (16)
- period flat (33)
- mid-century house (5)
- Unknown (10)
Energy Efficiency
- Energy Performance Certificate (EPC) surveys conducted for 42 properties.
- The most common rating is D.
- A (0)
- E (13)
- B (1)
- F (2)
- C (3)
- G (0)
- D (23)
- No EPC (22)
Top 3 Most Expensive Sales
- Sold Dec 2015£1,495,000 | 6 Bed House8, St. Mary's Avenue, London, N3 1SN8, St. Mary's Avenue, London, N3 1SN
- Sold Jan 2018£1,375,000 | 5 Bed HouseHeathfield, St. Mary's Avenue, London, N3 1SNHeathfield, St. Mary's Avenue, London, N3 1SN
- Sold Dec 2025£1,350,000 | 5 Bed House19, St. Mary's Avenue, London, N3 1SN19, St. Mary's Avenue, London, N3 1SN
Schools Nearby
- Pardes House Primary School500 m away
- St Mary's CofE Primary School700 m away
- Chalgrove Primary School700 m away
- Hasmonean High School for Boys700 m away
- Christ's College Finchley1.4 km away
- Hendon School1.7 km away
More reading links
Public Transport Nearby
The closest station to N3 1SN is Finchley Central station, which is 900 metres away.
- Finchley Central|900 m away
- Mill Hill East|1.2 km away
- West Finchley|1.7 km away
- Hendon Central|2.3 km away
