House Extensions. We will design, plan and build whatever extension and additional space you and your family need.

House extensions are a great way of getting that additional space you need. With the costs and upheaval involved in moving, many people are extending their home far easier and affordable whilst adding value to their property. The main things to consider with a home extension are:

  •  Local planning guidelines
  • What you want to achieve from the space
  • The position of the extension and what will it affect
  • Accessing the new rooms
  • Budget

The majority of our house extensions we create from design, planning, building control right through to construction, completion and guaranteeing the work. With our design team we work together to create the perfect extension for your home whilst taking away all the headache and managing from you, leaving you to just concentrate on furnishings and moving into the new area – please see our how it works page. If you already have your drawings being carried out by an independent architect, we also carry out construction only packages that are all still fully project managed and guaranteed, we also help with 1st fix (structural only extensions) where required. To get your project started why now get a free quote in under 2 minutes by using our House Extension Cost Calculator?


Need Help? Get A Call Back


Most dwellings will have permitted development rights intact. This means that, subject to the proposed works, it is often possible to design and build a house extension without the need for full planning permission. Where works would be classed as permitted development, we would apply for an application for a “lawful development certificate” on your behalf, this provides you with written verification from the council that the proposal is lawful.

Generally, an house extensions will require planning consent if;

  • More than 50% of the curtilage of the property is covered – note that previous extensions, detached garages, sheds etc. must be taken into consideration
  • The height of the extension exceeds that of the original dwelling
  • The height of the eaves exceeds that of the original dwelling
  • The house extension is to the front of the property (or side of the property to corner plots)
  • The house extension is to the rear of the property and exceeds more than 6m projection for semi-detached or terraced dwellings, and 8m for detached dwellings (notwithstanding the above Notification for Prior Approval guidelines). Single storey rear extensions should be no higher than 4m to the top of the roof from adjoining ground level
  • The house extension is within 2m of the boundary, and the eaves is more than 3m high
  • The house extension is to the side of the property, and more than 4m high, or has more than 1 storey, or is more than half the width of the original property
  • Materials to be used on a project should, where possible, match the existing dwelling. Where this is not the case, planning consent may be required
  • Two storey rear house extensions can sometimes be permitted development, provided that they do not project more than 3m from the original rear wall of the dwelling, and should be no less than 7m from the opposite boundary.

When determining the width or depth of a proposed house extension, it is important to consider the original building, as existing extensions will need to be taken into consideration.

To get your project started why now get a free quote in under 2 minutes by using our House Extension Cost Calculator?