It shows 614,474 net new dwellings between 2001/02 and 2021/22. Unfortunately, they don't appear to collect data on floor space at all. So this is less informative than it could be.
The number of residents per dwelling has gone up from 2.4 to 2.5. between 2001 and 2020.
Total Number of Dwellings and Net Additional Dwellings, Borough https://data.london.gov.uk/dataset/net-additional-dwellings-...
It shows 614,474 net new dwellings between 2001/02 and 2021/22. Unfortunately, they don't appear to collect data on floor space at all. So this is less informative than it could be.
The number of residents per dwelling has gone up from 2.4 to 2.5. between 2001 and 2020.