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Planning guide · Enfield

Permitted development in Enfield

Single-storey rear extensions, lofts and side extensions you can build in Enfield without full planning — and the exceptions.

Quick answer

Borough
Enfield
Planning authority
Enfield Council
Conservation areas
22
Statutory determination
8 weeks
Our approval rate
98% first time

London terraced street — typical residential housing for planning drawings in Enfield

How does Enfield handle the 6 metre extension route?

Evenly, and fast. Enfield granted 94 larger home extension notifications and refused 94, an exact 50.0% split against 34.6% across London, and told 680 households no prior approval was needed. It agreed an extension of time on 6.7% of applications, the lowest rate in London.

Larger home extension routeEnfieldLondon
Prior approval not required6809,067
Granted941,930
Refused943,646
Grant rate50.0%34.6%
Extension of time agreed6.7%34.5%
Lawful development certificates1,81036,657

Sources: MHCLG District Planning Application Statistics (PS1 and PS2), twelve quarters to March 2026. A zero in this return means the measure was not recorded for that borough, never that no such decisions exist. Open Government Licence v3.0.

In detail

Answers for Enfield

What can I build under PD in Enfield without planning?

Single-storey rear extension up to 3m deep (attached house) or 4m (detached); side extension up to half the original width; loft conversion up to 40m³ (terraced) or 50m³ (semi-detached); single-storey outbuilding within the curtilage; replacement windows and doors. All subject to material match, eaves setback (20cm), and not facing a highway.

Does Permitted Development apply to flats in Enfield?

No. Permitted Development rights apply only to houses (Class C3 dwellings). Flats and maisonettes require full planning for almost every external alteration.

Are PD rights different in a conservation area?

Yes — significantly reduced. In a conservation area: side extensions and two-storey rear extensions are not PD; cladding is not PD; chimney removal needs planning; roof additions are restricted.

What is a Lawful Development Certificate?

An LDC is a formal confirmation from the council that your proposal is lawful PD — recommended before building, useful when selling. Costs around £103 for council fees + drawings.

Do I need building regulations even under PD?

Yes. Building regulations are entirely separate from planning. Permitted Development removes the planning requirement only — you still need building control sign-off for structure, insulation, fire safety, drainage, and ventilation. We deliver both planning and building regs drawings.

Related guides for Enfield
An architectural technologist checking a printed set of house drawings, marking a proposed elevation in red — permitted development in Enfield
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Where in Enfield does a permitted development scheme actually get determined?

Every Enfield postcode district we draw in, the stock that dominates it and the authority that validates a permitted development scheme there. Enfield fees below are the statutory England rates for 2026, not permitted development scheme estimates.

PostcodeAreaDominant stockWhat it means for a permitted development scheme
N14Southgate1930s semi-detached, Edwardian villasSouthgate sits wholly inside N14, so Enfield Council validates every permitted development scheme submitted from an N14 address.
N18Upper EdmontonVictorian terraces, post-war estatesN18 covers Upper Edmonton only; Enfield Council handles the permitted development scheme.
N21Winchmore HillEdwardian villas, 1930s semi-detachedWinchmore Hill sits wholly inside N21, so Enfield Council validates every permitted development scheme submitted from an N21 address.
EN1Enfield Town / Bush Hill ParkGeorgian fragments, 1930s semi-detachedA permitted development scheme at an EN1 address in Enfield Town / Bush Hill Park is determined by Enfield Council under its own Local Plan policies for Enfield Town / Bush Hill Park.
EN2Enfield / Forty HillGeorgian fragments, 1930s semi-detachedEN2 covers Enfield / Forty Hill only; Enfield Council handles the permitted development scheme.
EN3Ponders End / BrimsdownPost-war estates, Victorian terracesA permitted development scheme at an EN3 address in Ponders End / Brimsdown is determined by Enfield Council under its own Local Plan policies for Ponders End / Brimsdown.
N11New Southgate / Bounds GreenEdwardian villas in Palmers Green and Winchmore Hill; 1930s semi-detached in Southgate; Victorian terraces in Edmonton; Metropolitan Green Belt north of the boroughNew Southgate / Bounds Green is split at N11. Either Barnet Council or Enfield Council can determine a permitted development scheme here, so the N11 address is checked against both policies maps first.
EN4East Barnet / CockfostersEdwardian villas in Palmers Green and Winchmore Hill; 1930s semi-detached in Southgate; Victorian terraces in Edmonton; Metropolitan Green Belt north of the boroughEN4 straddles a boundary: East Barnet / Cockfosters addresses fall to Barnet Council or Enfield Council, so confirm which authority validates the permitted development scheme before submitting EN4 drawings.

How does a permitted development scheme differ street by street across Enfield?

Roof pitch, wall build-up and plot depth change every few Enfield streets, and each one changes what a permitted development scheme can achieve at that address.

Does Enfield planning policy restrict a permitted development scheme?

Conservation areas covering Enfield: Enfield Council runs 22, and Forty Hill, Enfield Town, Gentleman's Row are the ones Enfield owners meet most. A permitted development scheme inside a Enfield conservation area loses permitted development, so the Enfield submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Winchmore Hill a permitted development scheme is judged on the street elevation first.

Enfield permitted development status: there is no borough-wide direction from Enfield Council, so a permitted development scheme at a N9 address is normally still permitted development. We certify that with a £274 Lawful Development Certificate rather than leaving a Enfield sale to argue it later.

What Enfield is built from: Edwardian villas in Palmers Green and Winchmore Hill; 1930s semi-detached in Southgate; Victorian terraces in Edmonton; Metropolitan Green Belt north of the borough. Outer north London; Metropolitan Green Belt affects north; generally permissive elsewhere. That mix decides the permitted development scheme route in Enfield more than the postcode does.

Who decides a permitted development scheme on the edge of Enfield?

Sources for this Enfield permitted development scheme page: borough policies maps and conservation-area registers (2025–26), Royal Mail postcode district boundaries, the Town and Country Planning (Fees for Applications) (England) Regulations, the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended, and the Party Wall etc. Act 1996.

A printed planning application drawing set — proposed elevations, floor plans and the os location plan with the site outlined in red — permitted development in Enfield
The planning set that goes to the council through the Planning Portal: proposed elevations, plans, and the OS location plan with your site outlined.

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