More than 4,600 basements have been granted planning permission under seven London boroughs in the past decade – together their depth is equivalent to a height almost 50 times that of the Shard

Combined depth of all basements in each postcode of seven London boroughs

5 metres or under

5-10m

15m and above

10-15m

Area of

analysis

Haringey

Kensington

and Chelsea

Islington

Camden

Larger ‘iceberg’ basements are concentrated in Kensington and Chelsea and Westminster. These basements are up to 18 metres deep and often bigger than the houses they are built under

Many small basements have been developed in Fulham and Parsons Green

Combined depth of all basements in each postcode of seven London boroughs

5 metres or under

5-10m

10-15m

15m and above

Area of

analysis

Haringey

Kensington

and Chelsea

Islington

Camden

Larger ‘iceberg’ basements are concentrated in Kensington and Chelsea and Westminster. These basements are up to 18 metres deep and often bigger than the houses they are built under

Many small basements have been developed in Fulham and Parsons Green

Combined depth of all basements in each postcode of seven London boroughs

5 metres or under

5-10m

10-15m

15m and above

Haringey

Area of

analysis

Kensington

and Chelsea

Islington

Camden

Larger ‘iceberg’ basements are concentrated in Kensington and Chelsea and Westminster. These basements are up to 18 metres deep and often bigger than the houses they are built under

Many small basements have been developed in Fulham and Parsons Green

Wandsworth

Of the 4,650 basements there are ...

3,755

783

112

standard basements, of one storey made up the vast majority of the applications granted

large-sized basements, of at least two-storeys in depth or one storey but extending well beyond the house under the garden

basements are classified as mega, or ‘icebergs’, of at least three-storeys or two-storeys extending under the garden

Combined depth of all basements in each postcode of seven London boroughs

5 metres or under

Haringey

5-10m

10-15m

15m and above

No ‘iceberg’ basements were granted in Haringey or Islington between 2008 and 2017

Area of

analysis

Camden

Islington

Kensington

and Chelsea

Hammersmith

and Fulham

Westminster

Larger ‘iceberg’ basements are concentrated in Kensington and Chelsea and Westminster. These basements are up to 18 metres deep and often bigger than the houses they are built under

Wandsworth

Many small basements have been developed in Fulham and Parsons Green

Combined depth of all basements in each postcode of seven London boroughs

Haringey

5 metres or under

5-10m

10-15m

15m and above

No ‘iceberg’ basements were granted in Haringey or Islington between 2008 and 2017

Area of

analysis

Camden

Kensington

and Chelsea

Islington

Hammersmith

and Fulham

Westminster

Of the 4,650 basements

there are ...

3,755

standard basements, of one storey made up the vast majority of the applications granted

783

Many small basements have been developed in Fulham and Parsons Green

large-sized basements, of at least two-storeys in depth or one storey but extending well beyond the house under the garden

112

basements are classified as mega, or ‘icebergs’, of at least three-storeys or two-storeys extending under the garden

Wandsworth

Larger ‘iceberg’ basements are concentrated in Kensington and Chelsea and Westminster. These basements are up to 18 metres deep and often bigger than the houses they are built under

Combined depth of all basements in each

postcode of seven London boroughs

5 metres or under

5-10m

10-15m

Haringey

15m and above

No ‘iceberg’ basements were granted in Haringey or Islington between 2008 and 2017

Camden

Area of

analysis

Of the 4,650 basements

there are ...

Islington

Kensington

and Chelsea

3,755

standard basements, of one storey made up the vast majority of the applications granted

783

Hammersmith

and Fulham

Westminster

large-sized basements, of at least two-storeys in depth or one storey but extending well beyond the house under the garden

112

Many small basements have been developed in Fulham and Parsons Green

basements are classified as mega, or ‘icebergs’, of at least three-storeys or two-storeys extending under the garden

Larger ‘iceberg’ basements are concentrated in Kensington and Chelsea and Westminster. These basements are up to 18 metres deep and often bigger than the houses they are built under

Wandsworth