Policy information sourced from Hammersmith & Fulham Planning Guidance

HS6 Development, extensions and alterations - scale and massing

Any proposed new development and/or extensions to existing buildings should as a general rule, not result in an infringing angle of more than 45 degrees. Therefore, depending on the circumstances of the site the following rules will apply:

  • proposals that adjoin residential properties with rear gardens less than 9 metres in length to the adjoining rear boundary, the line should be measured from a point at the rear residential boundary at ground level (see Figure 5); or,
  • proposals that have rear gardens (or distance to adjoining residential properties) of more than 9 metres in length to the rear boundary, should be measured at a height of 2 metres from ground level from a point of the adjoining boundary (see Figure 6); or,
  • if any part of the proposed building extends beyond these lines then on-site judgement will be a determining factor in assessing the impact the extension will have on the existing amenities of neighbouring properties (figures 5 and 6).

For more information please see the Hammersmith & Fulham Planning Guidance