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Blackfen market report DA15 7, Sidcup
The DA15 7 (Blackfen) house price history in full, 1995 to 2026, in cash and in today's money. Every figure on this page comes from the public record: 3,353 sales registered with HM Land Registry in DA15 7 (Sidcup) since 1995, each one a completed purchase at a real price, plus current rental figures from the ONS. Nothing here is a valuation, an estimate or an asking price.
Sales data to 2026. Rents: ONS, May 2026. Regenerated with every monthly data refresh.
In short: the 2026 median for DA15 7 (Sidcup) is £405,000, from 32 registered sales, up 9% on five years earlier; the mean is £462,900, and by floor area homes here have averaged about £5,160 per square metre over the last five years. Behind the figures sit 3,353 HM Land Registry entries going back to 1995, refreshed monthly, every one a completed sale rather than a valuation or an asking price.
DA15 7 is one sector of DA15 (Sidcup): a handful of streets, and the most local view the sold record can give. The price of that locality is lumpier charts, because each year's median rests on fewer sales.
Where DA15 7 sits
Shaded by median price on the same scale as the average prices map. Click any shape to open it on the live map with every sale plotted at its address, or zoom in past street level to see the sold homes right here.
What DA15 7 homes really sell for
In the DA15 7 property market, the 2026 median sale price is £405,000, from 32 registered sales; the mean, the "average house price" most sites quote, is £462,900, sitting a little above it, the familiar pattern where pricier homes stretch the average.
House prices per square metre in DA15 7
By floor space, homes in DA15 7 have sold for about £5,160 per square metre on average over the last five years: the like-for-like measure that lets you compare a small flat with a large house, from the Energy Performance Certificate floor areas behind each sale.
The national median for England and Wales is £285,000, which puts DA15 7 42% above the country at large.
DA15 7's median sold price, 1995 to 2026
Two lines: the median in the money of its day, and the same years restated by ONS CPIH into today's money, which is the truer test of getting dearer. Hover for exact figures; click a legend entry to isolate a series.
See this chart as a table
| Year | Median (cash) | Median (today's £) | Sales |
|---|---|---|---|
| 2026 | £405,000 | £405,000 | 32 |
| 2025 | £498,500 | £510,421 | 100 |
| 2024 | £430,000 | £457,178 | 103 |
| 2023 | £420,000 | £461,477 | 69 |
| 2022 | £425,000 | £498,361 | 97 |
| 2021 | £370,000 | £468,468 | 113 |
| 2020 | £380,000 | £493,058 | 69 |
| 2019 | £348,000 | £456,145 | 79 |
| 2018 | £416,200 | £554,802 | 82 |
| 2017 | £417,500 | £569,428 | 96 |
| 2016 | £287,000 | £401,516 | 106 |
| 2015 | £290,000 | £409,770 | 98 |
| 2014 | £255,000 | £361,762 | 124 |
| 2013 | £208,000 | £299,291 | 155 |
| 2012 | £248,800 | £366,203 | 102 |
| 2011 | £240,000 | £362,308 | 66 |
| 2010 | £274,500 | £430,487 | 78 |
| 2009 | £230,000 | £369,727 | 76 |
| 2008 | £199,000 | £326,203 | 50 |
| 2007 | £267,000 | £452,906 | 136 |
| 2006 | £211,000 | £366,269 | 131 |
| 2005 | £204,000 | £363,038 | 101 |
| 2004 | £224,500 | £407,736 | 107 |
| 2003 | £184,500 | £339,894 | 132 |
| 2002 | £167,500 | £315,150 | 170 |
| 2001 | £128,000 | £246,073 | 145 |
| 2000 | £100,000 | £196,250 | 112 |
| 1999 | £94,800 | £188,931 | 146 |
| 1998 | £85,200 | £171,982 | 122 |
| 1997 | £77,200 | £158,322 | 133 |
| 1996 | £71,000 | £149,736 | 113 |
| 1995 | £66,500 | £144,561 | 110 |
In cash terms the typical DA15 7 home went from £66,500 in 1995 to £405,000 in 2026, roughly 6 times the price. Inflation explains only part of it: in today's money the rise is still about 180%, a genuine increase in what a home here costs. The real-terms peak came in 2017, and today's median remains roughly 29% under it: a 2017 buyer is still waiting to get that price back in today's money.
Year-on-year change in the DA15 7 median
Each bar is the change on the year before, in cash. The zero line is the boundary between rising and falling.
The strongest year on record here is 2017 (+45.5% on the year before); the weakest, 2008 (−25.5%). Single-year swings like these are why the annualised table below matters more than any one year's headline.
Growth per year, over one to twenty years
| Period | Cash, per year | Real terms, per year |
|---|---|---|
| 1 years (since 2025) | −18.8% | −20.7% |
| 5 years (since 2021) | +1.8% | −2.9% |
| 10 years (since 2016) | +3.5% | +0.1% |
| 20 years (since 2006) | +3.3% | +0.5% |
Compound annual growth of the median sold price; the real column deflates by ONS CPIH. Annualised figures smooth the cycle (the chart above shows the cycle), and past growth is a record, not a forecast.
Sales activity in DA15 7
How many homes change hands
Annual recorded sales. The post-2008 trough is the financial crisis; treat the final bar as provisional while registrations catch up.
DA15 7 recorded 32 sales in the last twelve months of data. Like most of England and Wales, turnover never fully recovered from 2008: the market here averaged 129 sales a year before the financial crisis and 80 a year over the last five. Volume matters as much as price: when few homes change hands, the median gets jumpy and a single street can move the figure. The most recent year is always still filling in, because sales appear in the Land Registry weeks or months after completion.
What kind of market DA15 7 is
This is a thin market: 32 sales in the last twelve months of data. With that few transactions, one street selling well (or one block of cheap transfers) can move the median, so read the year lines as a range rather than a verdict. The record here is jumpy: year-on-year moves of ten per cent or more are common in the chart above, mostly a function of which homes happened to sell rather than the market lurching. Against the DA15 district median, DA15 7 sits 13% lower, marking it as a cheaper pocket of the district.
The rental side of DA15 7
DA15 7 falls under Bexley, where the ONS puts the average private rent at £1,528 a month (May 2026 figures). The spread runs from £1,221 a month for a typical one-bed to £2,413 at four-plus bedrooms, which is size doing most of the pricing.
Average monthly rent by size, Bexley
ONS Price Index of Private Rents, May 2026.
£1,528 a month is £18,336 a year, which against the £405,000 median sold price makes a gross yield of 4.5%. Gross means before letting costs, voids, maintenance and tax: treat it as a ceiling. The ONS publishes rents by local authority, so neighbouring districts under the same authority share these numbers.
Common questions on DA15 7 (Blackfen)
Are property prices falling in DA15 7 (Blackfen)?
Is DA15 7 (Blackfen) a good place to buy a house?
How much did a house sell for in DA15 7 (Blackfen)?
What happens to DA15 7 prices now?
The record answers a different question than "what happens next": the median is up 9% over five years in cash but down 14% after inflation. Put the volume chart beside the price chart before drawing conclusions, and allow for the register's lag behind actual completions.
DA15's current homes for sale
This is what you could actually buy today: 25 homes currently on the market from 8 agents publishing to HomesIndex.
These cover the whole DA15 district, not just DA15 7: live asking prices are collected per district.
16% of current listings sit under the prices comparable homes actually fetched. The comparison behind each listing uses recent recorded sales of similar homes close by.
- East Rochester Way, Sidcup, Kent
- Blackfen Road, Sidcup
- Greenwood Close, Bexley, Sidcup, DA15, Sidcup
The "under comparable sales" label measures each asking price against real nearby sales of similar homes: an opening position for a conversation rather than a valuation. The home itself still needs looking at.
See every DA15 home for sale on the map →
Refreshed every Monday and Thursday from agents' own feeds to HomesIndex, so a sample of the market rather than all of it. An asking price remains an ask, not a sale.
The price of an extra bedroom in DA
Real sold prices by size across the DA area, straight from the Land Registry record. The jump between sizes is local: in some areas a third bedroom adds a quarter to the price, in others nearly four fifths, so a national rule of thumb will mislead you here.
| Type | 1 bed | 2 bed | 3 bed | 4 bed | 5 bed |
|---|---|---|---|---|---|
| Detached | — | £450,000 | £600,000 (+33%) | £800,000 (+33%) | £1,100,000 (+38%) |
| Semi-detached | £341,500 | £410,000 (+20%) | £480,000 (+17%) | £600,000 (+25%) | £712,500 (+19%) |
| Terraced | £312,000 | £364,000 (+17%) | £410,000 (+13%) | £499,997 (+22%) | £630,000 (+26%) |
| Flat | £217,500 | £287,995 (+32%) | £339,997 (+18%) | — | — |
Medians of recorded sales over the last four years, by built form and bedroom count. Sold homes carry no advertised bedroom count, so sizes are estimated from their EPC records; a small number of homes will sit one size out. Blank cells mean too few homes for the figure to mean anything.
The risers and the fallers
The spread across the DA area is the point: the same five years treated these districts very differently.
Five-year change in the median, DA area districts
The districts that gained and lost most in cash terms, each row linking through to its own report.
Other sectors in DA15
Prices can differ sharply between two sectors a few minutes' walk apart. The rest of DA15, each linking to its own report:
| Sector | Median (latest) | Sales that year |
|---|---|---|
| DA15 8 | £470,500 | 62 |
| DA15 9 | £435,000 | 51 |
Zoom out to the full DA15 district report for the type split, monthly volumes and how DA15 compares with its neighbours.
Selling a home in DA15 7? Price it on the evidence
Ground the asking price in real sold prices first. The average prices map gives a rough value in a minute: start at DA15 7's shading and zoom to the sold homes on the street itself. Agents work from this same Land Registry record when they value; this page puts it in front of you before they arrive.
Estate agents working DA15 7: the featured spot on this report is free for founding agents, one per district. Claim DA15 7.
Go deeper
Answers come from the same Land Registry data behind this report, and the AI knows you are asking about DA15 7. Free, with a one click sign in.
Two maps carry on from here: every DA15 7 sale at its exact address, and the average prices map from area shading down to single homes. The report tool answers a specific question in writing, and each sale's mortgage and rent calculator prices a real purchase.
How this page is made: the statistics are computed from HM Land Registry Price Paid Data (Crown copyright, OGL v3.0), geocoded to address level; inflation adjustment uses the ONS CPIH index; rents are the ONS Price Index of Private Rents at local-authority level. Medians of recorded sales, not valuations. Nothing on this page is financial advice.