The area around Blackfen is green, practical and better supplied than its quiet streets suggest. There are two dozen parks and open spaces within a kilometre of a typical home. Water is a short walk away. The shops easily outnumber the pubs. Behind most houses there is a long back garden.
The average home in Blackfen is about 170 metres from its nearest park or open space, with around 25 within a kilometre. That is close enough that walking the dog takes no planning, and anyone with a pushchair can choose a different park each day of the week.
Blue space, meaning rivers, ponds and lakes, is about 450 metres from a typical home, with around 25 bodies of water within a kilometre. They are mostly small, but they are close.
The nearest stretch of the National Cycle Network is about 6 kilometres away on average, and no postcode in Blackfen counts as close to it. There is no ancient woodland in the area. Longer rides and old woods mean setting off for somewhere else first.
The rated premises tell you what the shopping parades are made of. There are 228 shops, 17 restaurants, 6 pubs and 38 offices. Blackfen buys far more than it drinks, which is how a suburb of owner-occupiers tends to spend its Saturdays.
Fine-particle air pollution across the London Borough of Bexley measured about 8.5 micrograms per cubic metre in 2024. That figure covers the whole borough and is not taken at any one street in Blackfen.
The character is interwar suburb with older pockets. Lamorbey, to the south, has Holy Trinity Church, Lamorbey House and Lamorbey Park, and some of the buildings of the old Hollies children's home survive there as housing. The University of Greenwich's Avery Hill Campus is just to the west. Sidcup and Welling sit on either side, with Eltham and Shooters Hill further off. From the pavement it is hard to tell where Blackfen stops and the next place starts, and the people who live here do not seem to mind.
Private gardens add up to about 75,000 square metres of garden for every 1,000 residents, measured across all 28 of Blackfen's small statistical areas. That is a lot of lawn. The semis were built with long back gardens, and those gardens do as much of the greening as the parks do.
On the council's rating list there are 462 business premises, and shops are by far the biggest group at 228. Offices come next at 38, followed by restaurants at 17. These are premises on a valuation list, which records what a building is rated as and not whether it is trading today. Even so, they show a shopping suburb, and a long way from a nightlife district.
Of the 144 food outlets with a hygiene rating, 72% hold the top score of five and about 1% are rated low. The odds at the local takeaway are good.
There is no protected landscape designation over Blackfen: no area of outstanding natural beauty, no site of special scientific interest and no ancient woodland. Its green space is parks, playing fields and back gardens, looked after by the council and by people who own their own mowers.
Blackfen's surroundings are excellent for a London suburb, with green space at the front door and more of it at the back.