Single-storey rear extension in Leeds
Do you need planning permission for a single-storey rear extension in Leeds? Not always. Under permitted development a rear extension may project up to 4 metres on a detached house or 3 metres on any other house without planning permission, subject to the other Class A limits; larger home extensions of up to 6 or 8 metres go through the neighbour consultation scheme.[1] Leeds treats a projection of 3.0m as normally acceptable on a shared boundary, and a larger one may need prior approval.[2][3]
Local rules for a single-storey rear extension in Leeds
- A rear projection of 3.0m is normally acceptable in Leeds where the extension is on the boundary with a neighbour (terraced or semi-detached homes).[2] The council may ask for less where neighbouring gardens are short or windows are close.[2]
- Larger single-storey extensions, of 4 to 8 metres on a detached house or 3 to 6 metres on other houses, may be permitted development, but the council must be notified through the prior approval process.[3]
- The same 45° code can also inform single-storey extensions, although the council usually applies it to two-storey ones.[2] Compliance does not guarantee approval.[2]
- An extension also has to leave enough garden: normally no more than half of the existing garden space should be covered by extensions.[2]
- Leeds asks for existing and proposed block plans, at 1:100 or 1:200, with every householder application.[4]
How Leeds handles these applications
Of the 1,960 householder applications that Leeds decided between July 2025 and June 2026, 329 were refused and 1,631 granted, which is 83.2%.[5] The count includes every kind of householder work. The share decided within 8 weeks, which we worked out from the same table and which excludes applications on an agreed timescale, was 95.1%.[5]
On our calculation from the Planning Data green-belt dataset, 61.3% of the Leeds council area is Green Belt.[6] Check whether your address is inside it.
Average prices in August 2026 were £205,530 for a terraced home, £269,544 for a semi-detached one and £449,768 for a detached one.[7] Some owners weigh an extension against the cost of moving.
What it costs
Our fixed price for a single-storey rear extension is £1,500 (VAT_WORDING_TBC), and the fee charged by the council is paid on top.
Asking for the proposal costs nothing, and ordering is a separate step.
Charges and fees that come from the council or from national rules:
- A householder pre-application enquiry to Leeds costs £156 (£130 plus VAT), and the council aims to respond within 30 working days.[8]
- Separately, the statutory planning fee set nationally for a householder extension or alteration is £548 from 1 April 2026.[9]
What the work looks like
Questions people ask
What share of householder applications does Leeds approve?
For the 12 months to 30 June 2026 the PS2 table gives a householder grant rate of 83.2% in Leeds.[5] It is an average across every kind of householder application.
How far can a single-storey extension project in Leeds?
The guide treats 3.0m as normally acceptable where the extension is on a boundary with a neighbour, and the council may ask for less where gardens are short or windows are close.[2]
Will a single-storey rear extension in Leeds definitely get approved if Plandome prepares it?
No. Approval is a decision for the council, so Plandome makes no promise about the result.
Does this page replace checking my own property?
Not on its own. The page is general information last checked on 14 November 2026, and the sources are listed below. Your own address may be affected by things it cannot show.