Castlegate - NG31 6SW
Key Postcode Insights
NG31 6SW is a residential postcode situated on Castlegate, Grantham, NG31 with 14 addresses.
It ranks as the 394th largest and 500th most expensive of the 1,016 postcodes in the NG31 area. The most common property type is a period house built between 1800 and 1911.
The postcode contains a total of 14 properties: 13 houses and 1 flat.
- Ave. Sale Price
- £200,172
- 10 Year change
- up 37.0%
- Ave. Rental Price
- £952pcm
- 10 Year change
- up 54.0%
- Ave. £ per ft²
- £164/ft²
- Ave. Gross Yield
- 5.7%/year/yr
Key Postcode Insights
NG31 6SW is a residential postcode situated on Castlegate, Grantham, NG31 with 14 addresses.
It ranks as the 394th largest and 500th most expensive of the 1,016 postcodes in the NG31 area. The most common property type is a period house built between 1800 and 1911.
The postcode contains a total of 14 properties: 13 houses and 1 flat.
- Ave. Sale Price
- £200,172
- 10 Year change
- up 37.0%
- Ave. Rental Price
- £952pcm
- 10 Year change
- up 54.0%
- Ave. £ per ft²
- £164/ft²
- Ave. Gross Yield
- 5.7%/year/yr
Explore Propertiesin NG31 6SW
- 20 Castlegate
3 Bed Period House
- 21 Castlegate
3 Bed Period House
- 22 Castlegate
3 Bed Period House
- 23A Castlegate
House
- 23 Castlegate
3 Bed Period House
Sales Market Trends
The last sale in NG31 6SW sold for £170,000 on 30th July 2025. Since then prices are down an average of 1.2%.
The current average value in the postcode is £200,172.
The NG31 6SW Sales Market has increased by 37.0% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| June 2026 | -1.4% | £200,172 |
| June 2025 | 1.9% | £203,112 |
| June 2024 | 0.5% | £199,253 |
| June 2023 | 3.3% | £198,268 |
| June 2022 | 9.4% | £191,903 |
| June 2021 | 6.4% | £175,445 |
| June 2020 | 2.6% | £164,884 |
| June 2019 | 1% | £160,725 |
| June 2018 | 3.4% | £159,114 |
| June 2017 | 5.3% | £153,929 |
| June 2016 | 3.8% | £146,160 |
| June 2015 | 5.1% | £140,842 |
| June 2014 | 6.2% | £133,949 |
| June 2013 | 2.9% | £126,120 |
| June 2012 | -0.7% | £122,516 |
| June 2011 | -0.8% | £123,404 |
| June 2010 | 3.2% | £124,402 |
| June 2009 | -16.1% | £120,569 |
| June 2008 | -2.5% | £143,755 |
| June 2007 | 0% | £147,494 |
Rental Market Trends
The current average rental value in the postcode is £952.
The NG31 6SW Rental Market has increased by 54.0% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| June 2026 | 2.8% | £952pcm |
| June 2025 | 3.8% | £926pcm |
| June 2024 | 4.9% | £892pcm |
| June 2023 | 9% | £850pcm |
| June 2022 | 7.6% | £780pcm |
| June 2021 | 8.2% | £725pcm |
| June 2020 | 1.9% | £670pcm |
| June 2019 | 2.3% | £658pcm |
| June 2018 | 0.3% | £643pcm |
| June 2017 | 3.8% | £641pcm |
| June 2016 | 4.8% | £618pcm |
| June 2015 | 3.5% | £590pcm |
| June 2014 | 1.3% | £570pcm |
| June 2013 | 0.6% | £562pcm |
| June 2012 | 1.1% | £559pcm |
| June 2011 | 2.8% | £553pcm |
| June 2010 | 1.9% | £538pcm |
| June 2009 | -6.9% | £528pcm |
| June 2008 | 2.6% | £567pcm |
| June 2007 | 0% | £553pcm |
Sales History
The last sale was on 30th July 2025 for £170,000 and since then the market in the area has decreased by 1.2%. The postcode has had a total of 33 sales since 1995.
NG31 6SW has seen 1 sale in the last three years and 1 sale in the last twelve months.
- Sold Jul 2025£170,000 | 3 Bed House22, Castlegate, Grantham, NG31 6SW22, Castlegate, Grantham, NG31 6SW
- Sold May 2022£158,000 | 3 Bed House21, Castlegate, Grantham, NG31 6SW21, Castlegate, Grantham, NG31 6SW
- Sold Jun 2021£180,000 | 4 Bed House30, Castlegate, Grantham, NG31 6SW30, Castlegate, Grantham, NG31 6SW
- Sold Aug 2020£210,000 | 4 Bed House28, Castlegate, Grantham, NG31 6SW28, Castlegate, Grantham, NG31 6SW
- Sold Aug 2020£122,500 | 3 Bed House22, Castlegate, Grantham, NG31 6SW22, Castlegate, Grantham, NG31 6SW
Nearby Postcodes
NG31 6SW is the 394th largest and the 500th most expensive postcode out of the 1,016 postcodes in the NG31 area.
- NG31 6SN, Castlegate, Grantham, NG31NG31 6SN26 Addresses|19 m away
- NG31 6SP, Castlegate, Grantham, NG31NG31 6SP8 Addresses|51 m away
- NG31 6AB, Castlegate, Grantham, NG31NG31 6AB6 Addresses|59 m away
- NG31 6RH, Russell Read Almshouses, Grantham, NG31NG31 6RH8 Addresses|68 m away
- NG31 6SE, Castlegate, Grantham, NG31NG31 6SE3 Addresses|72 m away
Property Types
- 12 period houses built between 1800 and 1911
- 1 house of an unknown age
- 1 other address of unknown type
- period house (12)
- house (1)
- Unknown (1)
Energy Efficiency
- Energy Performance Certificate (EPC) surveys conducted for 11 properties.
- The most common rating is E.
- A (0)
- E (6)
- B (0)
- F (0)
- C (1)
- G (0)
- D (4)
- No EPC (3)
Top 3 Most Expensive Sales
- Sold Jun 2021£730,000 | 2 Bed Flat55, Castlegate, Grantham, NG31 6SN55, Castlegate, Grantham, NG31 6SN
- Sold Aug 2021£400,000 | 5 Bed HouseMiddlemore Lodge, Middlemore Yard, Castlegate, Grantham, NG31 6SNMiddlemore Lodge, Middlemore Yard, Castlegate, Grantham, NG31 6SN
- Sold Apr 2003£270,000 | 5 Bed HouseMiddlemore Lodge, Middlemore Yard, Castlegate, Grantham, NG31 6SNMiddlemore Lodge, Middlemore Yard, Castlegate, Grantham, NG31 6SN
Schools Nearby
- St Wulfram's National Church of England Primary School100 m away
- The Little Gonerby Church of England Primary Academy, Grantham600 m away
- Saint Mary's Catholic Voluntary Academy700 m away
- The King's School, Grantham300 m away
- Kesteven and Grantham Girls' School400 m away
- The Priory Ruskin Academy1.2 km away
More reading links
Public Transport Nearby
The closest station to NG31 6SW is Grantham station, which is 800 metres away.
- Grantham|800 m away
- Ancaster|10.9 km away
- Bottesford|11.0 km away
- Rauceby|14.7 km away
