ARCHITECTURAL & INTERIOR PLANNING SERVICES

Home Counties Design

 

OFFICE : 0208 642 3352  EMAIL : INFO@HOMECOUNTIESDESIGN.CO.UK

Home Counties Design

 

LOFT EXTENSIONS

 

Built under Permitted Development

 

A loft extension may be built under Permitted Development if it meets the following criteria. 

 

*  The house isn’t in designated land, such as National Parks and the Broads,

    Areas of Outstanding Natural Beauty, Conservation Areas and World Heritage Sites.

 

*   It doesn’t exceed 40m3 for a terraced house, or 50m3 for a semi-detached or detached house.

    Any previous roof extension has to be included in this allowance.

 

*   A hip to gable extension is allowed providing it is set back from the eaves/gutter by 200mm.

 

*   The loft extension roof can be no higher than the main house roof.

 

*   You can only have a flat roof to the loft extension, ie. above a rear dormer, if there is already

    a flat roof on the existing house.

 

*   Dormers aren’t permitted on the front roof slope, only Velux style windows.

 

*   Juliet balconies are permitted to rear dormers, but not verandas, balconies or raised platforms.

 

*   Side windows, including Velux style, need to have obscured glazing and must not be openable,

    unless their lowest edge is 1.7m above floor level.

 

*   Chimneys, flues, and soil pipes cannot be altered or extended.

 

*    All building materials must match the existing house.

 

*    The existing foundations will have to be checked by the Local Authority to make sure

      they can take the new loadings.

 

*    Underpinned buildings may not be able to take increased loads.

 

 

WHAT’S NEEDED TO START?

 

*  We’ll come to you to talk over your project, free of charge, and let you know what’s possible.

 

*  We’ll send you an estimate of our fees and let you know what other costs are involved,

   especially Local Authority charges.

 

*  We’ll carry out a measured Survey of the existing building, and plot the surrounding area

   and adjoining properties.

 

*   We’ll draw up the Survey plans and elevations, as these are needed by the Local Authority.

 

*   We’ll prepare Scheme drawings for you to agree, showing plans, sections, and elevations

    of  your proposed extension.

 

*   We’ll prepare and submit the Lawful Development Certificate Application to the Local Authority.

 

*   We’ll receive an Acknowledgement of the Application from the Council giving a decision date

     - which is usually a minimum of 8 weeks from the acknowledgement date.

 

*  The Planning Officer will visit your property, and your neighbours’, and take photographs

    to assist with their report.

 

*   Your Application will be considered by the Planning Department and a decision

     will be received in 8 weeks.

 

*   Once you’ve received the Lawful Development Certificate you’ll need to think about

     construction drawings.

 

*   If Permitted Development is refused you’ll need to make a Planning Application.