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Loft Conversions Worcestershire, Gloucestershire and South Birmingham


Loft conversion with Velux windows

A Loft Conversion is a fantastic way of adding extra space and value to your home. It may be difficult to imagine a completed loft conversion when all you can see is rafters and floor joists but once walls, ceiling and floor areas have been insulated and rooflights installed and plasterboarding, plastering and flooring added, a lovely light, airy room materialises.

Loft conversion work can usually proceed under Permitted Development - see our guide below -,Building Regulations approval is required to turn the loft space into a habitable room.

A Loft Conversion with rooflights and staircase to 1st floor level will cost in the region of £25,000 for a terrace or semi detached property. A hip to gable loft conversion with a dormer window will provide the maximum amount of space and costs in the region of £35,000.

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Email:  to discuss your building project.

Call:  Worcestershire/Birmingham - 01905 630 520  or Gloucestershire 01452 595 685

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Permitted Development Planning
A loft conversion for your house is considered to be permitted development, not requiring an application for planning permission, subject to the following limits and conditions:

  • A volume allowance of 40 cubic metres additional roof space for terraced houses.
  • A volume allowance of 50 cubic metres additional roof space for detached and semi-detached houses.
  • No extension beyond the plane of the existing roof slope of the principal elevation that fronts the highway - i.e. no front dormer windows
  • Rear dormer windows are allowed although no extension to be higher than the highest part of the roof and need to be set back at least 20cm from the original eaves.
  • Hip to Gable extensions are allowed under Permitted Development as long as you do not exeed the volume allowance .
  • Materials to be similar in appearance to the existing house
  • No verandas, balconies or raised platforms, although Juliet Balconies are allowed.
  • Side-facing windows to be obscure-glazed; any opening to be 1.7m above the floor


Planning Permission will be required if

  • The volume of the additional roof space will exceed 40 cubic metres for a terraced house and 50 cubic metres for a semi detached or detached house.
  • If you require a front dormer window.
  • If you live in a Conservation Area , Area of Natural Outstanding Beauty , or your property has had the Permitted Development rights removed.


Many areas have their own local restrictions - in Birmingham for example -Bournville Village Trust,  Moorpool Estate, Calthorpe Estate etc you will need to seek approval from these bodies even if the work you wish to undertake is Permitted Development.

Building Regulations approval with be required regardless of whether the building work is undertaken under Permitted Development or a Planning Application.

Areas covered:

Worcester, Redditch, Bromsgrove, Stourport-on Severn, Droitwich, Evesham, Kidderminster, Malvern,Gloucester, Cheltenham, Tewksbury, Evesham, Ledbury. Birmingham, Barnt Green, Cofton Hackett, Rubery,Rednal,  Longbridge, Northfield, Bournville, Selly Oak, Kings Norton, Harborne, Kings Heath Sutton Coldfield, Moseley, Edgbaston, Halesowen, Stourbridge, Dudley & West Midlands.

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Worcestershire/Birmingham Office: 01905 630 520              Gloucestershire  Office: 01452 595 685

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