Extensions and loft conversions in Enfield
Enfield is a borough of 1930s semis. Southgate, Oakwood, Winchmore Hill, Bush Hill Park, Grange Park and the suburbs around Enfield Town are lined with hipped-roof pairs on plots wide enough for a two-storey side extension and deep enough for a 4–6 m rear extension, with roofs that suit a hip-to-gable conversion and rear dormer. A large share of this work is possible under permitted development (PD), and we secure a Lawful Development Certificate (LDC) as proof.
Palmers Green, Bowes Park, Edmonton and Ponders End are Victorian and Edwardian terraces, where side-return infills, L-shaped rear extensions and rear dormers within the 40 m³ allowance are the standard moves. In Enfield Town, Forty Hill and Gentleman’s Row the Georgian and Victorian houses are largely in conservation areas and many are listed, so work is slower and more careful.
Planning constraints in Enfield
- Green Belt across the north and west of the borough, where extensions must be proportionate to the original house.
- Lee Valley flood risk along the eastern edge, in Edmonton, Ponders End, Enfield Lock and Brimsdown.
- Conservation areas including Enfield Town, Forty Hill, Bush Hill Park, Winchmore Hill Green and the Lakes Estate, where roof extensions lose PD rights.
- Article 4 directions in several conservation areas and possibly for HMOs.
- An emerging Local Plan to 2041 that may change householder policy once adopted.
If you are unsure which of these affect your plot, start with the council’s constraints map or ask us to check as part of your quote.
What Enfield planning officers look for
Officers assess householder applications against the Development Management Document (2014) and the London Plan. The recurring tests are the 45-degree line from the neighbour’s nearest habitable window, the set-back and set-down of two-storey side extensions to avoid terracing, the depth of rear extensions relative to neighbours, and dormers kept below the ridge and inside the roof slope with matching tiles. Loss of daylight and outlook to a neighbour’s rear rooms is the most common refusal. The council offers paid pre-application advice, worth using in conservation areas and the Green Belt. Council fees from April 2025 are £528 for a householder application and £264 for a proposed-use LDC; verify before applying.
Our services in Enfield
- Planning documentation
- House extensions – side, rear, wraparound and two-storey
- Loft conversions – hip-to-gable and rear dormer designs
- Permitted development and LDCs
- Building Regulations drawings
- Outbuildings and garden rooms
Example projects nearby
- Side extension in Barnet – nearby, two-storey side extension on a 1930s semi
- Loft conversion in Hackney – rear dormer on a Victorian terrace in north-east London
- Rear extension in Islington – single-storey rear extension with side infill
Guides
Read Permitted development rights in London and Do I need planning permission for a rear extension in London?.
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