According to data from HM Land Registry, 51, Gloucester Avenue, Sidcup sits on a plot of 216 m².

We have plot size data on 35 out of 37 other houses in the postcode and 51, Gloucester Avenue, Sidcup sits on the 31st largest plot.

51, Gloucester Avenue, Sidcup has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 26 Jul 2022.

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

According to HM Land Registry, 51, Gloucester Avenue, Sidcup was last sold on 28th June 2024 for £545,000 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since June 2024, the market for similar properties has dropped by 11.2%.

• Sold Jun 2024£545,000
• Sold Jun 1998£100,000

According to the Land Registry and our network of Estate Agents, there have been 160 sales of properties similar to 51, Gloucester Avenue, Sidcup within a radius of 550 metres since 2009.

The most recent example is 20, Gloucester Avenue, Sidcup, DA15 7LL, a leasehold house which sold for £520,000 on the 11th September 2025.

Read more about house prices in DA15.

• Sold Sep 2025£520,000 | 3 Bed House20, Gloucester Avenue, Sidcup, DA15 7LL20, Gloucester Avenue, Sidcup, DA15 7LL
• Sold Jul 2025£539,000 | 3 Bed House92, Pinewood Avenue, Sidcup, DA15 8BD92, Pinewood Avenue, Sidcup, DA15 8BD
• Sold Jun 2025£610,000 | 3 Bed House52, Little Birches, Sidcup, DA15 7LW52, Little Birches, Sidcup, DA15 7LW
• Sold Feb 2025£675,000 | 3 Bed House126, Old Farm Avenue, Sidcup, DA15 8AH126, Old Farm Avenue, Sidcup, DA15 8AH
• Sold Jan 2025£500,000 | 3 Bed House129, Old Farm Avenue, Sidcup, DA15 8AJ129, Old Farm Avenue, Sidcup, DA15 8AJ
• Sold Sep 2024£585,000 | 3 Bed House5, York Avenue, Sidcup, DA15 7LJ5, York Avenue, Sidcup, DA15 7LJ
• Sold Jul 2024£550,000 | 3 Bed House37, York Avenue, Sidcup, DA15 7LJ37, York Avenue, Sidcup, DA15 7LJ
• Sold Aug 2023£588,000 | 3 Bed House12, Gloucester Avenue, Sidcup, DA15 7LL12, Gloucester Avenue, Sidcup, DA15 7LL
• Sold Dec 2022£538,000 | 3 Bed House42, Gloucester Avenue, Sidcup, DA15 7LL42, Gloucester Avenue, Sidcup, DA15 7LL
• Sold Sep 2022£522,500 | 3 Bed House60, Harland Avenue, Sidcup, DA15 7PQ60, Harland Avenue, Sidcup, DA15 7PQ
• Sold May 2022£445,000 | 3 Bed House74, Harland Avenue, Sidcup, DA15 7PQ74, Harland Avenue, Sidcup, DA15 7PQ
• Sold Mar 2021£427,000 | 3 Bed House14, Gloucester Avenue, Sidcup, DA15 7LL14, Gloucester Avenue, Sidcup, DA15 7LL
• Sold Mar 2020£465,000 | 3 Bed House40, Gloucester Avenue, Sidcup, DA15 7LL40, Gloucester Avenue, Sidcup, DA15 7LL
• Sold Sep 2019£428,000 | 3 Bed House18, Little Birches, Sidcup, DA15 7LW18, Little Birches, Sidcup, DA15 7LW
• Sold Sep 2018£430,000 | 3 Bed House11, York Avenue, Sidcup, DA15 7LJ11, York Avenue, Sidcup, DA15 7LJ
• Sold Jun 2018£448,000 | 3 Bed House29, Little Birches, Sidcup, DA15 7LN29, Little Birches, Sidcup, DA15 7LN
• Sold Jul 2016£447,000 | 3 Bed House53, Gloucester Avenue, Sidcup, DA15 7LP53, Gloucester Avenue, Sidcup, DA15 7LP
• Sold Oct 2015£387,000 | 3 Bed House61, Gloucester Avenue, Sidcup, DA15 7LP61, Gloucester Avenue, Sidcup, DA15 7LP
• Sold Apr 2013£366,821 | 3 Bed House45, York Avenue, Sidcup, DA15 7LJ45, York Avenue, Sidcup, DA15 7LJ
• Sold Nov 2009£249,995 | 3 Bed House37, Gloucester Avenue, Sidcup, DA15 7LP37, Gloucester Avenue, Sidcup, DA15 7LP

Gloucester Avenue, Sidcup, DA15 has a total of 61 addresses. According to our analysis of all the public data, 51, Gloucester Avenue, Sidcup is the 54th largest and the 46th most expensive property on the street.

When compared to the postcode district it is £40k more expensive than the average property in DA15.

• Longlands Primary School

  300 m away
• Burnt Oak Junior School

  800 m away
• Dulverton Primary School

  800 m away

• Chislehurst and Sidcup Grammar School

  1.2 km away
• Hurstmere School

  1.7 km away
• Chislehurst School for Girls

  1.7 km away

• Sidcup

  |

  800 m away
• New Eltham

  |

  1.5 km away
• Albany Park

  |

  2.4 km away

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