According to data from HM Land Registry, 73, Sefton Avenue, Harrow sits on a plot of 257 m².

We have plot size data on 18 out of 18 other houses in the postcode and 73, Sefton Avenue, Harrow sits on the 15th largest plot.

73, Sefton Avenue, Harrow has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 12 Oct 2025.

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

According to HM Land Registry, 73, Sefton Avenue, Harrow was last sold on 10th February 2020 for £400,000 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since February 2020, the market for similar properties has risen by 10.5%.

• Sold Feb 2020£400,000
• Sold Sep 2010£190,000

According to the Land Registry and our network of Estate Agents, there have been 110 sales of properties similar to 73, Sefton Avenue, Harrow within a radius of 440 metres since 2020.

The most recent example is 16, Stox Mead, Harrow, HA3 5JX, a freehold house which sold for £535,000 on the 16th June 2026.

Read more about house prices in HA3.

• Sold Jun 2026£535,000 | 3 Bed House16, Stox Mead, Harrow, HA3 5JX16, Stox Mead, Harrow, HA3 5JX
• Sold Jun 2025£475,000 | 3 Bed House125, Weald Lane, Harrow, HA3 5HB125, Weald Lane, Harrow, HA3 5HB
• Sold Mar 2025£480,000 | 3 Bed House3, Stox Mead, Harrow, HA3 5JX3, Stox Mead, Harrow, HA3 5JX
• Sold Nov 2024£485,000 | 3 Bed House25, Stox Mead, Harrow, HA3 5JX25, Stox Mead, Harrow, HA3 5JX
• Sold Sep 2024£410,000 | 3 Bed House22, Stox Mead, Harrow, HA3 5JX22, Stox Mead, Harrow, HA3 5JX
• Sold Sep 2024£550,000 | 3 Bed House8, Sefton Avenue, Harrow, HA3 5JS8, Sefton Avenue, Harrow, HA3 5JS
• Sold Jul 2024£495,000 | 3 Bed House30, Brinsley Road, Harrow, HA3 5HY30, Brinsley Road, Harrow, HA3 5HY
• Sold Mar 2024£465,000 | 3 Bed House37, Sefton Avenue, Harrow, HA3 5JT37, Sefton Avenue, Harrow, HA3 5JT
• Sold Dec 2023£550,000 | 3 Bed House53, Long Elmes, Harrow, HA3 5LE53, Long Elmes, Harrow, HA3 5LE
• Sold Nov 2023£523,000 | 3 Bed House2, Hitherwell Drive, Harrow, HA3 6JD2, Hitherwell Drive, Harrow, HA3 6JD
• Sold Oct 2023£475,000 | 3 Bed House38, Windsor Road, Harrow, HA3 5PX38, Windsor Road, Harrow, HA3 5PX
• Sold Aug 2023£460,000 | 3 Bed House10, Stox Mead, Harrow, HA3 5JX10, Stox Mead, Harrow, HA3 5JX
• Sold Oct 2022£470,000 | 3 Bed House8, Hitherwell Drive, Harrow, HA3 6JD8, Hitherwell Drive, Harrow, HA3 6JD
• Sold Feb 2022£487,000 | 3 Bed House50, Long Elmes, Harrow, HA3 5JL50, Long Elmes, Harrow, HA3 5JL
• Sold Dec 2021£425,000 | 3 Bed House14, Hitherwell Drive, Harrow, HA3 6JD14, Hitherwell Drive, Harrow, HA3 6JD
• Sold Jun 2021£497,500 | 3 Bed House27, Sefton Avenue, Harrow, HA3 5JT27, Sefton Avenue, Harrow, HA3 5JT
• Sold Apr 2021£430,000 | 3 Bed House13A, Sefton Avenue, Harrow, HA3 5JT13A, Sefton Avenue, Harrow, HA3 5JT
• Sold Apr 2021£450,000 | 3 Bed House84, Clewer Crescent, Harrow, HA3 5PZ84, Clewer Crescent, Harrow, HA3 5PZ
• Sold Jan 2021£505,000 | 3 Bed House16, Sefton Avenue, Harrow, HA3 5JS16, Sefton Avenue, Harrow, HA3 5JS
• Sold Oct 2020£490,000 | 3 Bed House51, Sefton Avenue, Harrow, HA3 5JP51, Sefton Avenue, Harrow, HA3 5JP

Sefton Avenue, Harrow, HA3 has a total of 121 addresses. According to our analysis of all the public data, 73, Sefton Avenue, Harrow is the 95th largest and the 84th most expensive property on the street.

When compared to the postcode district it is £53k less expensive than the average property in HA3.

• Cedars Manor School

  700 m away
• Weald Rise Primary School

  800 m away
• St Teresa's Catholic Primary School and Nursery

  900 m away

• Salvatorian Roman Catholic College

  400 m away
• The Sacred Heart Language College

  600 m away
• Hatch End High School

  1.0 km away

• Headstone Lane

  |

  1.0 km away
• Harrow & Wealdstone

  |

  1.4 km away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.