Swift Close - SG6 4LL
Key Postcode Insights
SG6 4LL is a residential postcode situated on Swift Close, Letchworth Garden City, SG6 with 29 addresses.
It ranks as the 1001st largest and 73rd most expensive of the 1,235 postcodes in the SG6 area. The most common property type is a modern flat built after 1980.
The postcode contains a total of 29 properties: 12 houses and 17 flats.
- Ave. Sale Price
- £223,734
- 10 Year change
- up 18.7%
- Ave. Rental Price
- £1,086pcm
- 10 Year change
- up 48.3%
- Ave. £ per ft²
- £446/ft²
- Ave. Gross Yield
- 5.8%/year/yr
Key Postcode Insights
SG6 4LL is a residential postcode situated on Swift Close, Letchworth Garden City, SG6 with 29 addresses.
It ranks as the 1001st largest and 73rd most expensive of the 1,235 postcodes in the SG6 area. The most common property type is a modern flat built after 1980.
The postcode contains a total of 29 properties: 12 houses and 17 flats.
- Ave. Sale Price
- £223,734
- 10 Year change
- up 18.7%
- Ave. Rental Price
- £1,086pcm
- 10 Year change
- up 48.3%
- Ave. £ per ft²
- £446/ft²
- Ave. Gross Yield
- 5.8%/year/yr
Explore Propertiesin SG6 4LL
- 26 Swift Close
Studio Modern Flat
- 27 Swift Close
Studio Modern Flat
- 28 Swift Close
Studio Modern Flat
- 29 Swift Close
Studio Mid-century Flat
- 30 Swift Close
2 Bed Modern House
Sales Market Trends
The last sale in SG6 4LL sold for £205,000 on 14th November 2025. Since then prices are up an average of 0.1%.
The current average value in the postcode is £223,734.
The SG6 4LL Sales Market has increased by 18.7% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| June 2026 | -0.8% | £223,734 |
| June 2025 | 2% | £225,637 |
| June 2024 | -0.6% | £221,244 |
| June 2023 | 0.3% | £222,677 |
| June 2022 | 6.6% | £222,020 |
| June 2021 | 3.9% | £208,351 |
| June 2020 | 0.9% | £200,620 |
| June 2019 | -3.1% | £198,779 |
| June 2018 | 2.1% | £205,188 |
| June 2017 | 6.7% | £201,064 |
| June 2016 | 11.1% | £188,511 |
| June 2015 | 13.4% | £169,666 |
| June 2014 | 11.1% | £149,665 |
| June 2013 | 1.6% | £134,698 |
| June 2012 | 1.7% | £132,533 |
| June 2011 | -1% | £130,282 |
| June 2010 | 4.9% | £131,655 |
| June 2009 | -12% | £125,560 |
| June 2008 | 0% | £142,635 |
| June 2007 | 0% | £142,658 |
Rental Market Trends
The current average rental value in the postcode is £1,086.
The SG6 4LL Rental Market has increased by 48.3% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| June 2026 | 3.1% | £1,086pcm |
| June 2025 | 7% | £1,053pcm |
| June 2024 | 7.1% | £985pcm |
| June 2023 | 9% | £919pcm |
| June 2022 | 6.8% | £843pcm |
| June 2021 | 3.8% | £790pcm |
| June 2020 | 1.6% | £761pcm |
| June 2019 | -0.3% | £749pcm |
| June 2018 | -1.9% | £751pcm |
| June 2017 | 4.5% | £766pcm |
| June 2016 | 7.1% | £732pcm |
| June 2015 | 6.5% | £684pcm |
| June 2014 | 6.1% | £642pcm |
| June 2013 | 2.3% | £605pcm |
| June 2012 | -0.7% | £592pcm |
| June 2011 | 3.6% | £596pcm |
| June 2010 | 2.4% | £576pcm |
| June 2009 | -7.4% | £562pcm |
| June 2008 | 2.5% | £607pcm |
| June 2007 | 0% | £592pcm |
Sales History
The last sale was on 14th November 2025 for £205,000 and since then the market in the area has increased by 0.1%. The postcode has had a total of 68 sales since 1995.
SG6 4LL has seen 6 sales in the last three years and 1 sale in the last twelve months.
- Sold Nov 2025£205,000 | 1 Bed Flat38, Swift Close, Letchworth Garden City, SG6 4LL38, Swift Close, Letchworth Garden City, SG6 4LL
- Sold Mar 2025£185,000 | 1 Bed Flat40, Swift Close, Letchworth Garden City, SG6 4LL40, Swift Close, Letchworth Garden City, SG6 4LL
- Sold Oct 2024£180,000 | 2 Bed Flat42, Swift Close, Letchworth Garden City, SG6 4LL42, Swift Close, Letchworth Garden City, SG6 4LL
- Sold Jun 2024£127,500 | Flat28, Swift Close, Letchworth Garden City, SG6 4LL28, Swift Close, Letchworth Garden City, SG6 4LL
- Sold Feb 2024£305,000 | 3 Bed House31, Swift Close, Letchworth Garden City, SG6 4LL31, Swift Close, Letchworth Garden City, SG6 4LL
Nearby Postcodes
SG6 4LL is the 1001st largest and the 73rd most expensive postcode out of the 1,235 postcodes in the SG6 area.
- SG6 4HZ, Sanderling Close, Letchworth Garden City, SG6SG6 4HZ30 Addresses|49 m away
- SG6 4LQ, Swift Close, Letchworth Garden City, SG6SG6 4LQ44 Addresses|69 m away
- SG6 4HY, Sanderling Close, Letchworth Garden City, SG6SG6 4HY51 Addresses|89 m away
- SG6 4LJ, Swift Close, Letchworth Garden City, SG6SG6 4LJ20 Addresses|104 m away
- SG6 4YF, Firecrest, Letchworth Garden City, SG6SG6 4YF63 Addresses|131 m away
Property Types
- 5 modern houses built after 1980
- 7 modern flats built after 1980
- 2 mid-century houses built between 1936 and 1979
- 5 mid-century flats built between 1936 and 1979
- 1 house of an unknown age
- 1 flat of an unknown age
- 8 other addresses of unknown type
- modern house (5)
- modern flat (7)
- mid-century house (2)
- mid-century flat (5)
- house (1)
- flat (1)
- Unknown (8)
Energy Efficiency
- Energy Performance Certificate (EPC) surveys conducted for 20 properties.
- The most common rating is C.
- A (0)
- E (0)
- B (0)
- F (0)
- C (12)
- G (0)
- D (8)
- No EPC (9)
Top 3 Most Expensive Sales
- Sold Jun 2021£405,000 | 3 Bed House5, Swift Close, Letchworth Garden City, SG6 4LJ5, Swift Close, Letchworth Garden City, SG6 4LJ
- Sold Dec 2020£390,000 | 3 Bed House5, Swift Close, Letchworth Garden City, SG6 4LJ5, Swift Close, Letchworth Garden City, SG6 4LJ
- Sold Jun 2025£370,000 | 3 Bed House67, Swift Close, Letchworth Garden City, SG6 4LQ67, Swift Close, Letchworth Garden City, SG6 4LQ
Schools Nearby
- Stonehill School500 m away
- Northfields Infants and Nursery School800 m away
- The Grange Academy1.0 km away
- Fearnhill School1.8 km away
- The Highfield School2.4 km away
- The Knights Templar School3.1 km away
More reading links
Public Transport Nearby
The closest station to SG6 4LL is Letchworth Garden City station, which is 1.2 kilometres away.
- Letchworth Garden City|1.2 km away
- Baldock|3.3 km away
- Arlesey|4.5 km away
- Hitchin|4.6 km away
