Practical guidance on Permitted Development and householder projects in England — what the rules allow, what they limit, and what it means for your drawings.
Start with the PD guideOur detailed guidance pages, organised by the kind of project you are planning.
Permitted Development rulesThe limits that apply to each type of householder project.View articles 
ExtensionsSingle storey rear, side and two storey rear extensions.View articles 
Lofts and roofsLoft conversions, dormers and roof alterations.View articles 
Garden buildingsOutbuildings, garden rooms and garages.View articles 
Around the housePorches, conservatories, windows and doors.View articles 
Boundaries and outsideFences, walls, gates, patios and driveways.View articles From our Permitted Development and planning article library.
A hip-to-gable loft conversion is usually permitted development on detached and semi-detached houses. Learn the PD rules, volume limits, and typical costs for 2025.
Semi-detached houses can build single-storey side extensions under permitted development. Find out the size limits, loft conversion rules, and party wall obligations.
Re-roofing and tile replacements don’t need planning permission. Learn when dormers, rooflights, and roof shape changes require permission and what the PD limits are.
Rear dormer windows are permitted development for most
Most loft conversions don’t need planning permission — but it depends on type and location. Find out exactly when you do and don’t need PP.
Can you do a loft conversion without planning permission? Learn the volume limits, dormer rules, and exactly when PD rights apply in England.
PERMITTED HOMEOWNER GUIDES
Our illustrated, practical guides help you understand the rules, explore design options and budget with confidence — before you commit to building work.
Explore all guides
Rules, design options, costs and next steps.
View guide
Rules, design options, costs and next steps.
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Rules, design options, costs and next steps.
View guide
Rules, design options, costs and next steps.
View guide
Rules, design options, costs and next steps.
View guide
Rules, design options, costs and next steps.
View guide
Rules, design options, costs and next steps.
View guide
Rules, design options, costs and next steps.
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Maximize your property’s footprint with precision and ease. Permitted provides complete design for Permitted Development Rights. Our packages are designed around the Permitted Development limits, so many projects can proceed without a full planning application.
PERMITTED is operated by Yorkshire Property Design Services Limited, registered in England and Wales under company number 12698267.
Registered office: Ground Floor, Techno Centre, Station Road, Horsforth, Leeds, LS18 5BJ
Business contact address: Wira House, Ground Floor, Suite 5, Ring Road, West Park, Leeds, LS16 6EB
