Version ECAB 2021
Unit: Number: Suffix:
Building name:
Address 1:
Address 2:
Address 3:
Address 4:
Postcode:
Please provide the full postal address of the application site.
3. Site Address Details
4. Eligibility
Important - Please note that:
- This application is specifically for a 'larger' single storey rear extension to a house, and the questions below are particular to determining
the eligibility of proposals for this extension type.
- Other kinds of home extensions do not use this 'prior approval' process and should not be applied for using this type of application.
- There are additional permitted development conditions that apply to all home extensions which are not covered in the questions below,
they can be reviewed in the common projects section on the Planning Portal at https://www.planningportal.co.uk/extension
If your proposals do not meet these conditions, it is advisable not to continue with this application.
Will the extension be:
- A single storey; and
- No more than 4 metres in height (measured externally from the natural ground level);
NoYes
If you have answered no above, the proposal will exceed the limits set by legislation. In this circumstance, you should not continue with
this application and seek advice from the Local Planning Authority on the best course of action.
Will the extension:
- Where the house is detached, extend beyond the rear wall of the original dwellinghouse by over 4 but no more than 8 metres; or
- Where the house is not detached, extend beyond the rear wall of the original dwellinghouse by over 3 but no more than 6 metres;
Note that this should be measured externally.
Where the proposed extension will be joined to an existing extension, the measurement must be in respect to the total enlargement
(i.e. both the existing and proposed extensions) to the original dwellinghouse.
NoYes
If you have answered no above, the proposed extension will not be within the limits, set by legislation, for the prior approval process.
- If the proposed extension would not extend, as detailed above, by over 3 metres (or over 4 metres for a detached house)
Permitted development rights may still apply, subject to all the other eligibility criteria (including some not covered by this form).
- If the proposed extension would extend, as detailed above, by over 6 metres (or over 8 metres for a detached house)
The size of proposed extension means that you will likely need planning permission to build it.
In either circumstance, you should not continue with this application and seek advice from the Local Planning Authority on the
best course of action.
Is the dwellinghouse to be extended within any of the following:
- a conservation area;
- an area of outstanding natural beauty;
- an area specified by the Secretary of State for the purposes of enhancement and protection of the natural beauty and amenity of the
countryside;
- the Broads;
- a National Park;
- a World Heritage Site;
- a site of special scientific interest;
NoYes
If you have answered yes above, the proposal will exceed the limits set by legislation. In this circumstance, you should not continue with
this application and seek advice from the Local Planning Authority on the best course of action.
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