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Bricks&Logic is a trading name of Urban Markets Ltd
Company No. 11113204
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VAT No. GB 287 0845 68
Registered Address: 2 Leman St, London E1 8FA
SG6 3NWHouse Prices / East of England, North Hertfordshire, St. Marys Close
Last updated May 2026
Key Postcode Insights
SG6 3NW is a residential postcode situated on St. Marys Close, Letchworth Garden City, SG6 with 14 addresses.
It ranks as the 601st largest and 715th most expensive of the 1,237 postcodes in the SG6 area. The dominant property type is a mid-century flat built between 1936 and 1979.
The postcode contains a total of 14 properties: 6 houses and 8 flats.
14
Properties
- Houses
- Flats
Key Postcode Insights
SG6 3NW is a residential postcode situated on St. Marys Close, Letchworth Garden City, SG6 with 14 addresses.
It ranks as the 601st largest and 715th most expensive of the 1,237 postcodes in the SG6 area. The dominant property type is a mid-century flat built between 1936 and 1979.
The postcode contains a total of 14 properties: 6 houses and 8 flats.
14
Properties
- Houses
- Flats
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House Pricesin SG6 3NW
Sale prices range from £364,527 for 3 bedroom leasehold flats (881 ft2) to £717,639 for 5 bedroom freehold houses with a garden (2,064 ft2) .
Monthly rental prices range from £1,699 pcm for 3 bed flats to £2,619 pcm for 5 bed houses.
The gross rental yield is between 4.4% and 5.6%.
The average value per square foot is £408.
Average Sale Value
£487,682
Average Rental Value
£2,017 pcm
Average Rental Yield
5.0% /year
Average Value Per Sqft
£408 /ft2
Sales Market Trendsin SG6 3NW
The last sale in SG6 3NW sold for £450,000 on 18th December 2025. Since then prices are down an average of 2.1%.
The current average value in the postcode is £487,682.
The SG6 3NW Sales Market has increased by 19.9% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| April 2026 | -3% | £487,682 |
| April 2025 | 1% | £502,702 |
| April 2024 | 0.3% | £497,738 |
| April 2023 | 1% | £496,219 |
| April 2022 | 5.5% | £491,157 |
| April 2021 | 4.7% | £465,650 |
| April 2020 | 2.2% | £444,749 |
| April 2019 | -2.1% | £434,972 |
| April 2018 | 2.4% | £444,375 |
| April 2017 | 6.7% | £434,048 |
| April 2016 | 9.3% | £406,634 |
| April 2015 | 11.5% | £372,052 |
| April 2014 | 10.3% | £333,631 |
| April 2013 | 4.6% | £302,533 |
| April 2012 | 2.8% | £289,210 |
| April 2011 | 0.2% | £281,329 |
| April 2010 | 8% | £280,843 |
| April 2009 | -14.5% | £259,983 |
| April 2008 | 2.8% | £304,047 |
| April 2007 | 0% | £295,798 |
Rental Market Trendsin SG6 3NW
The current average rental value in the postcode is £2,017.
The SG6 3NW Rental Market has increased by 48.0% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| April 2026 | 0.9% | £2,017pcm |
| April 2025 | 5.2% | £2,000pcm |
| April 2024 | 9.7% | £1,901pcm |
| April 2023 | 8.5% | £1,733pcm |
| April 2022 | 7% | £1,597pcm |
| April 2021 | 4.3% | £1,493pcm |
| April 2020 | 2.7% | £1,431pcm |
| April 2019 | -0.2% | £1,394pcm |
| April 2018 | -2% | £1,396pcm |
| April 2017 | 4.5% | £1,425pcm |
| April 2016 | 4.9% | £1,363pcm |
| April 2015 | 4.9% | £1,299pcm |
| April 2014 | 4.4% | £1,238pcm |
| April 2013 | 4.9% | £1,185pcm |
| April 2012 | 2.5% | £1,130pcm |
| April 2011 | 3.9% | £1,102pcm |
| April 2010 | 3.8% | £1,061pcm |
| April 2009 | -7.2% | £1,022pcm |
| April 2008 | 2.8% | £1,101pcm |
| April 2007 | 0% | £1,071pcm |
Explore Propertiesin SG6 3NW, St. Marys Close, Letchworth Garden City, SG6
- 1, St. Marys Close, Letchworth Garden City, SG6 3NW3 bed mid-century flat
- 2, St. Marys Close, Letchworth Garden City, SG6 3NW3 bed mid-century flat
- 3, St. Marys Close, Letchworth Garden City, SG6 3NW3 bed mid-century flat
- 4, St. Marys Close, Letchworth Garden City, SG6 3NW3 bed mid-century flat
- 5, St. Marys Close, Letchworth Garden City, SG6 3NW3 bed mid-century flat
- 6, St. Marys Close, Letchworth Garden City, SG6 3NW3 bed flat
- 7, St. Marys Close, Letchworth Garden City, SG6 3NW3 bed mid-century flat
- 8, St. Marys Close, Letchworth Garden City, SG6 3NW3 bed mid-century flat
- 9, St. Marys Close, Letchworth Garden City, SG6 3NW4 bed mid-century house
- 10, St. Marys Close, Letchworth Garden City, SG6 3NW4 bed house
- 11, St. Marys Close, Letchworth Garden City, SG6 3NW4 bed mid-century house
- 12, St. Marys Close, Letchworth Garden City, SG6 3NW4 bed mid-century house
- 14, St. Marys Close, Letchworth Garden City, SG6 3NW
- 15, St. Marys Close, Letchworth Garden City, SG6 3NW5 bed house
Sales Historyin SG6 3NW
The last sale was on 18th December 2025 for £450,000 and since then the market in the area has decreased by 2.1%. The postcode has had a total of 25 sales since 1995.
SG6 3NW has seen 3 sales in the last three years and 1 sale in the last twelve months.
Sold Dec 2025£450,000 | 3 Bed FlatSt. Marys Close7, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Feb 2024£359,461 | 3 Bed FlatSt. Marys Close1, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold May 2023£450,000 | 3 Bed FlatSt. Marys Close5, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Oct 2022£365,000 | 3 Bed FlatSt. Marys Close3, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold May 2019£375,000 | 3 Bed FlatSt. Marys Close5, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Jan 2019£485,000 | 4 Bed HouseSt. Marys Close9, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Sep 2018£465,000 | 4 Bed HouseSt. Marys Close10, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Dec 2013£260,000 | 3 Bed FlatSt. Marys Close8, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold May 2013£405,000 | 4 Bed HouseSt. Marys Close11, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Mar 2013£273,625 | 3 Bed FlatSt. Marys Close2, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold May 2010£400,000 | 4 Bed HouseSt. Marys Close12, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Mar 2010£265,000 | 3 Bed FlatSt. Marys Close6, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Mar 2010£446,000 | 5 Bed HouseSt. Marys Close15, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Apr 2009£203,500 | 3 Bed FlatSt. Marys Close1, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Apr 2006£249,000 | 3 Bed FlatSt. Marys Close4, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Jul 2005£235,000 | 3 Bed FlatSt. Marys Close5, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Mar 2005£370,000 | 4 Bed HouseSt. Marys Close10, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Feb 2005£235,000 | 3 Bed FlatSt. Marys Close7, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Apr 2001£157,000 | 3 Bed FlatSt. Marys Close3, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Sep 1999£162,500 | 3 Bed FlatSt. Marys Close8, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Aug 1997£185,000 | 5 Bed HouseSt. Marys Close15, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Jul 1997£131,000 | 3 Bed FlatSt. Marys Close4, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Mar 1997£137,500 | 3 Bed FlatSt. Marys Close7, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Nov 1996£116,000 | 3 Bed FlatSt. Marys Close8, St. Marys Close, Letchworth Garden City, SG6 3NW
Sold Aug 1996£185,000 | 5 Bed HouseSt. Marys Close15, St. Marys Close, Letchworth Garden City, SG6 3NW
Nearby Postcodesto SG6 3NW
SG6 3NW is the 601st largest and the 715th most expensive postcode out of the 1,237 postcodes in the SG6 area.
- 63 mSG6 3NH, Letchworth Lane, Letchworth Garden City, SG6SG6 3NH5 Addresses
- 119 mSG6 3NL, Manor Way, Letchworth Garden City, SG6SG6 3NL3 Addresses
- 163 mSG6 3TX, Aubreys, Letchworth Garden City, SG6SG6 3TX4 Addresses
- 172 mSG6 3NN, Manor Close, Letchworth Garden City, SG6SG6 3NN7 Addresses
- 183 mSG6 3NF, Letchworth Lane, Letchworth Garden City, SG6SG6 3NF3 Addresses
- 187 mSG6 3NJ, Manor Way, Letchworth Garden City, SG6SG6 3NJ9 Addresses
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Property Typesin SG6 3NW
- 3 mid-century houses built between 1936 and 1979
- 7 mid-century flats built between 1936 and 1979
- 2 houses of an unknown age
- 1 flat of an unknown age
- 1 other address of unknown type
- mid-century house (3)
- mid-century flat (7)
- house (2)
- flat (1)
- Unknown (1)
Energy Efficiencyof properties in SG6 3NW
- Energy Performance Certificate (EPC) surveys conducted for 10 properties.
- The dominant rating is C.
- A (0)
- E (1)
- B (0)
- F (0)
- C (7)
- G (0)
- D (2)
- No EPC (4)
Top 3 Most Expensive Saleson St. Marys Close
- Sold Jan 2019£485,000 | 4 Bed HouseSt. Marys Close9, St. Marys Close, Letchworth Garden City, SG6 3NW
- Sold Sep 2018£465,000 | 4 Bed HouseSt. Marys Close10, St. Marys Close, Letchworth Garden City, SG6 3NW
- Sold May 2023£450,000 | 3 Bed FlatSt. Marys Close5, St. Marys Close, Letchworth Garden City, SG6 3NW
Schools Nearbyto SG6 3NW
The nearest primary school to SG6 3NW is Lordship Farm Primary School which is 610 metres away.
- 610mLordship Farm Primary School
- 1.0kmSt Thomas More Roman Catholic Primary School
- 1.3kmPixmore Junior School
The nearest secondary school is The Highfield School which is 983 metres away.
- 983mThe Highfield School
- 1.8kmFearnhill School
- 3.2kmHitchin Girls' School
More reading links
Public Transport Nearbyto SG6 3NW
The closest station to SG6 3NW is Letchworth Garden City station which is 1.8 kilometres away.
- 1.8kmLetchworth Garden City
- 2.6kmHitchin
- 4.4kmBaldock
- 7.1kmStevenage
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