Our Data Sources
17, Portland Avenue, Sidcup has 21 entries in the Land Registry , most recently in September 2007 and no records in the EPC database.
We combine this sold price information with public data of neighbouring properties to estimate the attributes and values.
The local information is scored as 5 out of 5 and is considered of high accuracy.
Price Range & Condition
Decorative condition can have a big effect on a property's value and this effect varies depending on the type, size and location of the property.
If 17, Portland Avenue, Sidcup is in very good condition we estimate a sale value of £526,171 and a rental value of £2,320 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £466,037 and a rental value of £2,055 per month.
Plot Size
According to data from HM Land Registry, 17, Portland Avenue, Sidcup sits on a plot of 174 m2.
We have plot size data on 52 out of 60 other houses in the postcode and 17, Portland Avenue, Sidcup sits on the 48th largest plot.
Sold Prices
According to HM Land Registry, 17, Portland Avenue, Sidcup was last sold on 21st September 2007 for £265,000 and was recorded as a freehold house.
The property has had 2 sales since 1995.
Since September 2007, the market for similar properties has risen by 101.7%.
- Sold Sep 2007£265,000
- Sold Jul 1998£85,000
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 3 sales of properties similar to 17, Portland Avenue, Sidcup within a radius of 480 metres over the last 2 years.
The most recent example is 9, Portland Avenue, Sidcup, DA15 9HA, a freehold house which sold for £515,000 on the 21st January 2026.
Read more about house prices in DA15.
- Sold Jan 2026£515,000 | 3 Bed House9, Portland Avenue, Sidcup, DA15 9HA9, Portland Avenue, Sidcup, DA15 9HA
- Sold Mar 2025£510,000 | 4 Bed House42, Portland Avenue, Sidcup, DA15 9HA42, Portland Avenue, Sidcup, DA15 9HA
- Sold May 2023£385,000 | 3 Bed House15, Portland Avenue, Sidcup, DA15 9HA15, Portland Avenue, Sidcup, DA15 9HA
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Portland Avenue, Sidcup, DA15 has a total of 60 addresses. According to our analysis of all the public data, 17, Portland Avenue, Sidcup is the 15th largest and the 17th most expensive property on the street.
When compared to the postcode district it is £3k less expensive than the average property in DA15.
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Schools Nearby
- 400mSherwood Park Primary School
- 500mDays Lane Primary School
- 700mChatsworth Infant School
- 500mBlackfen School for Girls
- 1.1kmBexley Grammar School
- 1.1kmHurstmere School
More reading links
Public Transport Nearby
- 1.4kmSidcup
- 1.9kmAlbany Park
- 2.0kmWelling
Available Internet Speeds
According to recent data from Ofcom, ultrafast broadband is available in this area.
According to recent data from Ofcom, Ultrafast broadband is available in the area.
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be very low.
