HM Land Registry records the plot of land for 40, Carmarthen Road, Slough as measuring 278 m².

That makes it the largest plot in the postcode, where all 20 other houses have recorded plot data.

40, Carmarthen Road, Slough has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 10 Jan 2026.

The property is connected to mains gas and has high performance glazing. It is heated using a boiler and radiators (mains gas).

The most recent sale of 40, Carmarthen Road, Slough completed on 5th March 2007 at £240,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 this is the property's only sale.

Values of comparable properties have risen by 89.4% over the period since March 2007.

• Sold Mar 2007£240,000

Since 2012 37 properties similar to 40, Carmarthen Road, Slough have sold within a radius of 460 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 8th August 2025, was 49, Stoke Poges Lane, Slough, SL1 3NY, a freehold house which sold for £550,000.

Read more about house prices in SL1.

• Sold Aug 2025£550,000 | 4 Bed House49, Stoke Poges Lane, Slough, SL1 3NY49, Stoke Poges Lane, Slough, SL1 3NY
• Sold May 2025£540,000 | 4 Bed House20, Godolphin Road, Slough, SL1 3DN20, Godolphin Road, Slough, SL1 3DN
• Sold Mar 2025£575,000 | 4 Bed House16, Whitby Road, Slough, SL1 3DQ16, Whitby Road, Slough, SL1 3DQ
• Sold Jan 2025£550,000 | 4 Bed House61, Stoke Poges Lane, Slough, SL1 3NY61, Stoke Poges Lane, Slough, SL1 3NY
• Sold Nov 2024£565,000 | 4 Bed House7, Mundesley Spur, Slough, SL1 3JB7, Mundesley Spur, Slough, SL1 3JB
• Sold Feb 2024£535,000 | 4 Bed House58, Stoke Poges Lane, Slough, SL1 3PD58, Stoke Poges Lane, Slough, SL1 3PD
• Sold Dec 2023£450,000 | 4 Bed House24, Carlisle Road, Slough, SL1 3DG24, Carlisle Road, Slough, SL1 3DG
• Sold Aug 2021£435,000 | 4 Bed House37, Aylesbury Crescent, Slough, SL1 3ER37, Aylesbury Crescent, Slough, SL1 3ER
• Sold Jun 2021£335,000 | 3 Bed House17, Carmarthen Road, Slough, SL1 3PT17, Carmarthen Road, Slough, SL1 3PT
• Sold Oct 2020£475,000 | 4 Bed House73, Stoke Poges Lane, Slough, SL1 3NY73, Stoke Poges Lane, Slough, SL1 3NY
• Sold Jul 2019£480,000 | 4 Bed House14, Aldborough Spur, Slough, SL1 3EN14, Aldborough Spur, Slough, SL1 3EN
• Sold Nov 2018£350,000 | 4 Bed House2A, Bradley Road, Slough, SL1 3PP2A, Bradley Road, Slough, SL1 3PP
• Sold Jul 2018£423,000 | 4 Bed House3, Loddon Spur, Slough, SL1 3EJ3, Loddon Spur, Slough, SL1 3EJ
• Sold Dec 2015£320,000 | 3 Bed House32, Baylis Road, Slough, SL1 3PJ32, Baylis Road, Slough, SL1 3PJ
• Sold Nov 2015£332,000 | 3 Bed House34, Baylis Road, Slough, SL1 3PJ34, Baylis Road, Slough, SL1 3PJ
• Sold Sep 2015£322,500 | 4 Bed House53, Aylesbury Crescent, Slough, SL1 3ER53, Aylesbury Crescent, Slough, SL1 3ER
• Sold Aug 2014£269,000 | 4 Bed House53, Bradley Road, Slough, SL1 3PL53, Bradley Road, Slough, SL1 3PL
• Sold Feb 2014£249,000 | 4 Bed House18, Leeds Road, Slough, SL1 3PU18, Leeds Road, Slough, SL1 3PU
• Sold Sep 2013£299,000 | 4 Bed House64, Stoke Poges Lane, Slough, SL1 3PD64, Stoke Poges Lane, Slough, SL1 3PD
• Sold Dec 2012£290,000 | 4 Bed House89, Stoke Poges Lane, Slough, SL1 3NY89, Stoke Poges Lane, Slough, SL1 3NY

Of the 41 addresses on Carmarthen Road, Slough, SL1, 40, Carmarthen Road, Slough comes out as the 6th largest and the 6th most expensive in our analysis of the public data.

It is also £120k more expensive than the average property across the SL1 district.

• James Elliman Academy

  400 m away
• The Godolphin Junior Academy

  900 m away
• Phoenix Infant Academy

  1.0 km away

• Herschel Grammar School

  700 m away
• Lynch Hill Enterprise Academy

  1.0 km away
• Baylis Court School

  1.0 km away

• Slough

  |

  900 m away
• Burnham

  |

  3.2 km away
• Burnham (Buckinghamshire)

  |

  3.2 km away

The flood risk here is rated Very Low, based on Environment Agency data.