HM Land Registry records the plot of land for 21, Blawith Road, Harrow as measuring 199 m².

That makes it the 21st largest plot in the postcode, where 15 of the 16 other houses have recorded plot data.

21, Blawith Road, Harrow has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 26 Jan 2023.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

The most recent sale of 21, Blawith Road, Harrow completed on 25th January 2013 at £325,000 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 60.0% over the period since January 2013.

• Sold Jan 2013£325,000

Since 2008 34 properties similar to 21, Blawith Road, Harrow have sold within a radius of 390 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 25th November 2025, was 15, Blawith Road, Harrow, HA1 1TL, a freehold house which sold for £500,000.

Read more about house prices in HA1.

• Sold Nov 2025£500,000 | 3 Bed House15, Blawith Road, Harrow, HA1 1TL15, Blawith Road, Harrow, HA1 1TL
• Sold Nov 2025£502,500 | 3 Bed House17, Woodlands Road, Harrow, HA1 2RT17, Woodlands Road, Harrow, HA1 2RT
• Sold Oct 2024£660,000 | 3 Bed House37, Nibthwaite Road, Harrow, HA1 1TB37, Nibthwaite Road, Harrow, HA1 1TB
• Sold Aug 2024£555,000 | 3 Bed House30, Blawith Road, Harrow, HA1 1TN30, Blawith Road, Harrow, HA1 1TN
• Sold Jul 2024£570,000 | 3 Bed House13, Marlborough Hill, Harrow, HA1 1TX13, Marlborough Hill, Harrow, HA1 1TX
• Sold Aug 2023£635,000 | 3 Bed House7, Sparkbridge Road, Harrow, HA1 1TJ7, Sparkbridge Road, Harrow, HA1 1TJ
• Sold Jun 2021£530,000 | 3 Bed House42, Blawith Road, Harrow, HA1 1TN42, Blawith Road, Harrow, HA1 1TN
• Sold Feb 2021£590,000 | 3 Bed House32, Bethecar Road, Harrow, HA1 1SD32, Bethecar Road, Harrow, HA1 1SD
• Sold Feb 2021£490,000 | 3 Bed House34, Woodlands Road, Harrow, HA1 2RS34, Woodlands Road, Harrow, HA1 2RS
• Sold Nov 2020£485,000 | 3 Bed House45, Lowick Road, Harrow, HA1 1UP45, Lowick Road, Harrow, HA1 1UP
• Sold Jan 2019£525,000 | 3 Bed House18, Sparkbridge Road, Harrow, HA1 1TJ18, Sparkbridge Road, Harrow, HA1 1TJ
• Sold May 2018£400,000 | 3 Bed House39, Frognal Avenue, Harrow, HA1 2SG39, Frognal Avenue, Harrow, HA1 2SG
• Sold Feb 2018£525,000 | 3 Bed House9, Lowick Road, Harrow, HA1 1UP9, Lowick Road, Harrow, HA1 1UP
• Sold Nov 2014£390,000 | 3 Bed House31, Blawith Road, Harrow, HA1 1TL31, Blawith Road, Harrow, HA1 1TL
• Sold Sep 2014£375,000 | 3 Bed House54, Elmgrove Road, Harrow, HA1 2QH54, Elmgrove Road, Harrow, HA1 2QH
• Sold Jul 2013£302,000 | 3 Bed House1, Bethecar Road, Harrow, HA1 1SF1, Bethecar Road, Harrow, HA1 1SF
• Sold Sep 2012£246,000 | 3 Bed House61, Rosslyn Crescent, Harrow, HA1 2SA61, Rosslyn Crescent, Harrow, HA1 2SA
• Sold Dec 2011£300,000 | 3 Bed House33, Blawith Road, Harrow, HA1 1TL33, Blawith Road, Harrow, HA1 1TL
• Sold May 2010£285,000 | 3 Bed House38, Frognal Avenue, Harrow, HA1 2SF38, Frognal Avenue, Harrow, HA1 2SF
• Sold Dec 2008£244,999 | 3 Bed House16, Torver Road, Harrow, HA1 1TQ16, Torver Road, Harrow, HA1 1TQ

Of the 67 addresses on Blawith Road, Harrow, HA1, 21, Blawith Road, Harrow comes out as the 35th largest and the 34th most expensive in our analysis of the public data.

It is also £27k more expensive than the average property across the HA1 district.

• Saint Jerome Church of England Bilingual School

  400 m away
• Marlborough Primary School

  500 m away
• Norbury School

  700 m away

• Harrow High School

  1.0 km away
• The Sacred Heart Language College

  1.2 km away
• Salvatorian Roman Catholic College

  1.3 km away

• Harrow & Wealdstone

  |

  400 m away
• Harrow-on-the-Hill

  |

  1.0 km away

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