A typical Sidcup home sells for about £382,500. A flat costs well under that and a semi well over it. Prices have barely moved in a year. For a London address with a train to Charing Cross, the bill is in the middle of the range.
The Land Registry recorded 216 sales in Sidcup in the year to May 2026, at a median of about £382,500. That middle figure blends some very different homes. The 101 flats sold for a median of about £280,000 and the 45 terraced houses about £435,000. The 57 semis came in at about £532,000. Only 13 detached houses sold, at a median of about £770,000, which is too few to say much beyond who had £770,000 to spend. The flat buyers made up nearly half the sales, so the headline figure moves with them.
The official house price index for the area was up 2.2% in the twelve months to May 2026, putting its average at about £408,600. That is a modest rise. Flats on the same index went the other way, down 0.5%. Over five years, the index is up about 13%. Neither change is big enough to call a boom or a slump, whatever the particulars say about "rising demand".
Band C is the most common council tax band in Sidcup, and only 12% of homes fall in Band A or B. A Band D bill here comes to about £2,370 a year. Arriving every spring, it is a reminder that the post goes to a London borough.
Renting is priced across the whole London Borough of Bexley, where the Office for National Statistics puts the typical private rent at about £1,520 a month in April 2026, up about 7% on a year earlier. That figure is a mean from the index, not an average of what is listed in Sidcup this week. By size, a one-bed in Bexley averages about £1,220 a month, a two-bed £1,515, a three-bed £1,850 and a four-bed or larger £2,410. Studio and room rents aren't published.
Household income in Sidcup was modelled at around £74,700 a year in the financial year to March 2023. That is gross, before tax, and averaged across the area's neighbourhoods. It is enough to make a flat a sensible stretch and a terrace a serious one. For a semi, a household on that income needs either a large deposit or a long mortgage term.
Of the sales that could be matched to an energy certificate's floor area, about 69% of the total, the median price was about £5,430 per square metre. The typical floor area behind that figure was 79 square metres. Floor areas on energy certificates are worth checking against the asking price, because "spacious" in a listing has no unit of measurement and square metres do.
At the 2021 Census, 15% of Sidcup's homes had one bedroom, 33% two, 32% three and 21% four or more. Two- and three-bed homes make up most of the town, which explains why the semi sets the tone. A family looking for a fourth bedroom is competing for about one home in five.
Houses in Sidcup are fairly priced for what they are. They aren't cheap, and they aren't a London premium either. Flats are the affordable way in, and the semi is the target most buyers have to save for.