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House Extension Plans

House Extension Plans

Planning Permission for House Extension Plans


New legislation for householder extension plans came into force on 1st Oct 2008.

If you contact us we can help you decide if your extension plans require a planning application submission. The new planning legislation at 1st glance appears to give a green light to the average house extension to be built without the need for planning approval. NOTE that will not always be the case and many householders and builders may be caught out due to this ambiguously written piece of  Planning Law.

We have taken the view that it would  be a good idea to clarify the main BASIC   3 Metre RULE. This is one of  new Planning permitted development rules and will effect most new small extensions, especially conservatory extensions, which are being built as possibly NOT requiring Planning approval.

Instead for small extensions and conservatories the following Main rules should be assessed before assuming that an extension can be built without planning permission.HIP TO GABLE ATTIC ROOFLIFT REAR SKETCH VIEW.•you can now ignore the fact that there is a back street or alley at the rear of the property. (the only relevant street or highway is at the front of the property)

•If the property is a semi detached house, an extension of any kind is allowed rearwards of the main house wall (ie what would be the main 2 storey building), so long as it ONLY projects rearwards 3m in total.

•If the property is a detached house, an extension of any kind is allowed rearwards of the main house wall (ie what would be say the 2 storey building), so long as it only projects rearwards 4m in total.

•Total height from ground level to eaves/gutter should be no greater than 3m

•Total height from ground level to ridge should be no greater than 4m•The extension should usually only be single storey. If a  2 storey extension plan is required this can be achieved as but other rules apply.

Note that the above rules are quite far reaching in terms of conservatory design and its requirement for planning permission.

For a typical Victorian style conservatory extension plan with a 3 metre projection of its side, before the splayed section, which could extend to maybe 4 metres is now required to have a planning approval. See sketch at below.


NOTE that in almost EVERY case, even if an extension doesn’t need a planning approval, it WILL  need  a consent under the Building Regulations. Even to commence work without an approval is liable to attract a hefty fine as the building regulations are an Act of Law, and are frequently updated. Buildings erected which do not comply with these CODES of practice can be issued with a notice to demolish by the local authority.

Contact Chris  to get advice on your Extension Plans. we can talk you through the many options and let you know if what you want, is actually feasible. If not, we are sure we can suggest something which can be achieved, within your budget, and get all the relevant council permissions

We will  design and produce your Extension Plans to achieve the Dream Space you want to live in.

Also because we produce all our Designs in 3D you will be able to see your project, it as it will be built. as a near photo realistic perspective view.

We can even provide Fly through animations for you to play with on your computer.

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