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Registered Address: 2 Leman St, London E1 8FA
NG31 6SUHouse Prices / East Midlands, South Kesteven, Castlegate
Last updated May 2026
Key Postcode Insights
NG31 6SU is a residential postcode situated on Castlegate, Grantham, NG31 with 3 addresses.
It ranks as the 55th largest and 92nd most expensive of the 1,017 postcodes in the NG31 area. The dominant property type is a period flat built between 1800 and 1911.
The postcode contains a total of 3 properties: 3 flats.
3
Properties
- Flats
Key Postcode Insights
NG31 6SU is a residential postcode situated on Castlegate, Grantham, NG31 with 3 addresses.
It ranks as the 55th largest and 92nd most expensive of the 1,017 postcodes in the NG31 area. The dominant property type is a period flat built between 1800 and 1911.
The postcode contains a total of 3 properties: 3 flats.
3
Properties
- Flats
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House Pricesin NG31 6SU
Sale prices range from £84,484 for 2 bedroom Leasehold flats with a garden (624 ft2) to £107,125 for 3 bedroom Leasehold flats (1,969 ft2) .
Monthly rental prices range from £461 pcm for 2 bed flats to £568 pcm for 3 bed flats.
The gross rental yield is between 6.3% and 6.5%.
The average value per square foot is £135.
Average Sale Value
£95,911
Average Rental Value
£511 pcm
Average Rental Yield
6.4% /year
Average Value Per Sqft
£135 /ft2
Sales Market Trendsin NG31 6SU
The current average value in the postcode is £95,911.
The NG31 6SU Sales Market has increased by 26.6% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| April 2026 | -1.7% | £95,911 |
| April 2025 | 3% | £97,610 |
| April 2024 | 0.2% | £94,788 |
| April 2023 | 4.5% | £94,636 |
| April 2022 | 6.5% | £90,549 |
| April 2021 | 3.7% | £85,033 |
| April 2020 | 1.5% | £82,017 |
| April 2019 | 1% | £80,798 |
| April 2018 | 2.5% | £80,006 |
| April 2017 | 3% | £78,053 |
| April 2016 | 2.9% | £75,765 |
| April 2015 | 5% | £73,660 |
| April 2014 | 5.2% | £70,136 |
| April 2013 | 1.2% | £66,693 |
| April 2012 | -1.9% | £65,927 |
| April 2011 | -0.9% | £67,212 |
| April 2010 | -2% | £67,834 |
| April 2009 | -19% | £69,220 |
| April 2008 | 0.7% | £85,443 |
| April 2007 | 0% | £84,863 |
Rental Market Trendsin NG31 6SU
The current average rental value in the postcode is £511.
The NG31 6SU Rental Market has increased by 40.8% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| April 2026 | 3% | £511pcm |
| April 2025 | 5.1% | £496pcm |
| April 2024 | 7.5% | £472pcm |
| April 2023 | 8.2% | £439pcm |
| April 2022 | 6% | £406pcm |
| April 2021 | 3.2% | £383pcm |
| April 2020 | 1.2% | £371pcm |
| April 2019 | 1.1% | £367pcm |
| April 2018 | -0.7% | £363pcm |
| April 2017 | 0.7% | £365pcm |
| April 2016 | 3.6% | £363pcm |
| April 2015 | 1.5% | £350pcm |
| April 2014 | 1.2% | £345pcm |
| April 2013 | 0% | £341pcm |
| April 2012 | -0.3% | £341pcm |
| April 2011 | -0.2% | £342pcm |
| April 2010 | -2.6% | £343pcm |
| April 2009 | -5.3% | £352pcm |
| April 2008 | 2.1% | £372pcm |
| April 2007 | 0% | £364pcm |
Explore Buildingsin NG31 6SU, Castlegate, Grantham, NG31
Nearby Postcodesto NG31 6SU
NG31 6SU is the 55th largest and the 92nd most expensive postcode out of the 1,017 postcodes in the NG31 area.
- 22 mNG31 6SS, Castlegate, Grantham, NG31NG31 6SS6 Addresses
- 61 mNG31 6RY, Brook Street, Grantham, NG31NG31 6RY3 Addresses
- 80 mNG31 8BY, Park Road, Grantham, NG31NG31 8BY26 Addresses
- 90 mNG31 8BZ, Manthorpe Road, Grantham, NG31NG31 8BZ8 Addresses
- 95 mNG31 8DB, Prospect Place, Grantham, NG31NG31 8DB17 Addresses
- 101 mNG31 8BT, Redcross Street, Grantham, NG31NG31 8BT39 Addresses
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Property Typesin NG31 6SU
- 3 period flats built between 1800 and 1911
- period flat (3)
Energy Efficiencyof properties in NG31 6SU
- Energy Performance Certificate (EPC) surveys conducted for 2 properties.
- The dominant rating is E.
- A (0)
- E (2)
- B (0)
- F (0)
- C (0)
- G (0)
- D (0)
- No EPC (1)
Top 3 Most Expensive Saleson Castlegate
- Sold Jun 2021£730,000 | 5 Bed HouseCastlegate55, Castlegate, Grantham, NG31 6SN
- Sold Aug 2021£400,000 | 5 Bed HouseMiddlemore Yard, CastlegateMiddlemore Lodge, Middlemore Yard, Castlegate, Grantham, NG31 6SN
- Sold Apr 2003£270,000 | 5 Bed HouseMiddlemore Yard, CastlegateMiddlemore Lodge, Middlemore Yard, Castlegate, Grantham, NG31 6SN
Schools Nearbyto NG31 6SU
The nearest primary school to NG31 6SU is St Wulfram's National Church of England Primary School which is 223 metres away.
- 223mSt Wulfram's National Church of England Primary School
- 451mThe Little Gonerby Church of England Primary Academy, Grantham
- 699mSaint Mary's Catholic Voluntary Academy
The nearest secondary school is The King's School, Grantham which is 101 metres away.
- 101mThe King's School, Grantham
- 535mKesteven and Grantham Girls' School
- 834mThe Priory Ruskin Academy
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Public Transport Nearbyto NG31 6SU
The closest station to NG31 6SU is Grantham station which is 1.1 kilometres away.
- 1.1kmGrantham
- 10.6kmAncaster
- 10.9kmBottesford
- 14.5kmRauceby