Castle Street - MK18 1BS
Key Postcode Insights
MK18 1BS is a residential postcode situated on Castle Street, Buckingham, MK18 with 17 addresses.
It ranks as the 843rd largest and 340th most expensive of the 1,199 postcodes in the MK18 area. The most common property type is a period house built between 1800 and 1911.
The postcode contains a total of 17 properties: 11 houses and 6 flats.
- Ave. Sale Price
- £421,938
- 10 Year change
- up 21.9%
- Ave. Rental Price
- £1,693pcm
- 10 Year change
- up 38.8%
- Ave. £ per ft²
- £281/ft²
- Ave. Gross Yield
- 4.8%/year/yr
Key Postcode Insights
MK18 1BS is a residential postcode situated on Castle Street, Buckingham, MK18 with 17 addresses.
It ranks as the 843rd largest and 340th most expensive of the 1,199 postcodes in the MK18 area. The most common property type is a period house built between 1800 and 1911.
The postcode contains a total of 17 properties: 11 houses and 6 flats.
- Ave. Sale Price
- £421,938
- 10 Year change
- up 21.9%
- Ave. Rental Price
- £1,693pcm
- 10 Year change
- up 38.8%
- Ave. £ per ft²
- £281/ft²
- Ave. Gross Yield
- 4.8%/year/yr
Explore Propertiesin MK18 1BS
- Garden House
5 Bed Mid-century House
- The Penthouse
2 Bed Period Flat
- Remus House
Building  |  4 Flats
- 1-2 Castle Street
House
Sales Market Trends
The last sale in MK18 1BS sold for £610,000 on 27th June 2025. Since then prices are up an average of 1.4%.
The current average value in the postcode is £421,938.
The MK18 1BS Sales Market has increased by 21.9% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| June 2026 | 1.6% | £421,938 |
| June 2025 | -0.2% | £415,108 |
| June 2024 | -2.2% | £416,137 |
| June 2023 | 4% | £425,331 |
| June 2022 | 8.5% | £409,107 |
| June 2021 | 1.1% | £376,965 |
| June 2020 | 3.1% | £372,801 |
| June 2019 | -2% | £361,739 |
| June 2018 | 2.2% | £369,276 |
| June 2017 | 4.4% | £361,231 |
| June 2016 | 8.7% | £346,114 |
| June 2015 | 8.1% | £318,348 |
| June 2014 | 9.4% | £294,536 |
| June 2013 | 2.4% | £269,247 |
| June 2012 | -4.3% | £262,941 |
| June 2011 | 0.8% | £274,776 |
| June 2010 | 10.4% | £272,523 |
| June 2009 | -13.2% | £246,876 |
| June 2008 | 0.6% | £284,563 |
| June 2007 | 0% | £282,982 |
Rental Market Trends
The current average rental value in the postcode is £1,693.
The MK18 1BS Rental Market has increased by 38.8% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| June 2026 | 4.6% | £1,693pcm |
| June 2025 | 3.5% | £1,619pcm |
| June 2024 | 9.2% | £1,565pcm |
| June 2023 | 6.4% | £1,434pcm |
| June 2022 | 5.9% | £1,347pcm |
| June 2021 | 4.6% | £1,272pcm |
| June 2020 | -1.4% | £1,216pcm |
| June 2019 | 0.9% | £1,233pcm |
| June 2018 | -0.2% | £1,222pcm |
| June 2017 | 0.3% | £1,224pcm |
| June 2016 | 6% | £1,220pcm |
| June 2015 | 3.3% | £1,151pcm |
| June 2014 | 6.4% | £1,114pcm |
| June 2013 | 2.4% | £1,047pcm |
| June 2012 | 3.3% | £1,023pcm |
| June 2011 | 3.7% | £990pcm |
| June 2010 | 3.3% | £955pcm |
| June 2009 | -5.4% | £925pcm |
| June 2008 | 3.5% | £978pcm |
| June 2007 | 0% | £945pcm |
Sales History
The last sale was on 27th June 2025 for £610,000 and since then the market in the area has increased by 1.4%. The postcode has had a total of 24 sales since 1995.
MK18 1BS has seen 3 sales in the last three years and no sales in the last twelve months.
- Sold Jun 2025£610,000 | 5 Bed House6, Castle Street, Buckingham, MK18 1BS6, Castle Street, Buckingham, MK18 1BS
- Sold Mar 2025£895,000 | 5 Bed House5, Castle Street, Buckingham, MK18 1BS5, Castle Street, Buckingham, MK18 1BS
- Sold Mar 2024£570,000 | 5 Bed House7, Castle Street, Buckingham, MK18 1BS7, Castle Street, Buckingham, MK18 1BS
- Sold May 2021£272,500 | 5 Bed House4, Castle Street, Buckingham, MK18 1BS4, Castle Street, Buckingham, MK18 1BS
- Sold Dec 2020£685,000 | 5 Bed House6, Castle Street, Buckingham, MK18 1BS6, Castle Street, Buckingham, MK18 1BS
Nearby Postcodes
MK18 1BS is the 843rd largest and the 340th most expensive postcode out of the 1,199 postcodes in the MK18 area.
- MK18 1BP, Castle Street, Buckingham, MK18MK18 1BP8 Addresses|32 m away
- MK18 1EQ, Castle Court, Buckingham, MK18MK18 1EQ12 Addresses|48 m away
- MK18 1EZ, Bristle Hill, Buckingham, MK18MK18 1EZ14 Addresses|57 m away
- MK18 1HB, School Lane, Twyford, Buckingham, MK18MK18 1HB9 Addresses|68 m away
- MK18 1EU, Elm Street, Buckingham, MK18MK18 1EU8 Addresses|75 m away
Property Types
- 6 period houses built between 1800 and 1911
- 1 period flat built between 1800 and 1911
- 1 mid-century house built between 1936 and 1979
- 4 mid-century flats built between 1936 and 1979
- 5 other addresses of unknown type
- period house (6)
- period flat (1)
- mid-century house (1)
- mid-century flat (4)
- Unknown (5)
Energy Efficiency
- Energy Performance Certificate (EPC) surveys conducted for 14 properties.
- The most common rating is D.
- A (0)
- E (4)
- B (1)
- F (1)
- C (0)
- G (0)
- D (8)
- No EPC (3)
Top 3 Most Expensive Sales
- Sold Mar 2025£895,000 | 5 Bed House5, Castle Street, Buckingham, MK18 1BS5, Castle Street, Buckingham, MK18 1BS
- Sold Dec 2020£685,000 | 5 Bed House6, Castle Street, Buckingham, MK18 1BS6, Castle Street, Buckingham, MK18 1BS
- Sold Sep 2001£675,000 | 5 Bed House12, Castle Street, Buckingham, MK18 1BS12, Castle Street, Buckingham, MK18 1BS
Schools Nearby
- George Grenville Academy500 m away
- Buckingham Primary School1.0 km away
- Bourton Meadow Academy1.2 km away
- Buckingham School600 m away
- Royal Latin School700 m away
- Silverstone UTC8.7 km away
More reading links
Public Transport Nearby
The closest station to MK18 1BS is Winslow station, which is 9.0 kilometres away.
- Winslow|9.0 km away
- Wolverton|14.6 km away
- Milton Keynes Central|15.2 km away
- Bicester North|15.4 km away
