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Basement works by area

Surveyor-led checks

Use this hub to open the district-specific guide for basement works. The area pages cover local borough context, likely approvals, cost signals and the exact-address check needed before you rely on permitted development or any consent route.

Check your exact address
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Related guidance

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The biggest space gain — and the hardest consent in London.

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The biggest space gain in London — bought at the steepest price.

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Party walls: notices, awards, and your neighbours

Almost every London extension, loft and basement engages this Act. Here's how it actually works.

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AREAS

Basement works in served areas

Basement works in NW1

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in NW3

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in NW5

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in NW6

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in WC1

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in W1

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in W2

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in W9

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SW1

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in NW8

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in N1

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in N5

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in N7

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in N19

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in EC1

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in E8

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in E9

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in E5

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in N16

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in N4

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in N8

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in N10

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in N15

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in N22

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in N6

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SW3

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SW7

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in W8

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in W11

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in W10

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in W6

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in W12

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in W14

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SW6

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE1

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE5

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE15

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE16

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE22

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SW4

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SW2

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SW9

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE11

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE24

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in E1

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in E2

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in E3

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in E14

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SW18

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SW11

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SW12

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SW15

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SW17

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in TW9

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in TW10

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in TW1

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in TW11

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SW14

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in NW11

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in NW7

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in N20

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in N3

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in EN5

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in W5

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in W13

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in W7

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in W3

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in UB2

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SW19

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SW20

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in CR4

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SM4

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in KT1

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in KT2

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in KT6

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in KT3

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in KT4

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in BR1

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in BR2

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in BR3

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in BR6

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in BR7

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE20

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in HA1

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in HA5

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in HA7

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in HA2

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in HA3

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in NW2

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in NW10

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in NW9

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in HA9

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in HA0

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE10

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE3

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE7

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE9

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE18

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE4

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE13

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE23

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE8

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE14

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in EN2

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in EN1

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in N21

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in N14

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in EN3

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in E17

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in E10

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in E11

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in E4

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SM1

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SM5

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SM2

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SM3

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SM6

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in CR0

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in CR2

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in CR8

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in CR5

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in SE25

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in DA5

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in DA6

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in DA7

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in DA8

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in DA15

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in W4

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in TW8

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in TW7

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in TW3

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in TW13

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in UB10

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in UB8

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in HA4

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in HA6

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in UB7

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in IG1

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in IG8

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in E18

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in IG2

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in IG6

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in RM1

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in RM2

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in RM11

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in RM14

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in RM13

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in E15

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in E7

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in E6

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in E13

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in E16

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in IG11

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in RM8

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in RM9

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in RM10

First check: Planning permission and the borough's basement policy

Service guide →
Basement works in EC2

First check: Planning permission and the borough's basement policy

Service guide →
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