See what you could build without a planning application.
Professional, builder-ready drawing packages for extensions, lofts, porches, garages, garden rooms and more — designed to Permitted Development parameters and supplied as sold.
PERMITTED HOMEOWNER GUIDES
Planning a home project?
Start with a £15 guide.
Our illustrated, practical guides help you understand the rules, explore design options and budget with confidence — before you commit to building work.
Porch GuideRules, design options, costs and next steps.
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Garage GuideRules, design options, costs and next steps.
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Garden Room GuideRules, design options, costs and next steps.
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Rear Extension GuideRules, design options, costs and next steps.
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Side Extension GuideRules, design options, costs and next steps.
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Conservatory GuideRules, design options, costs and next steps.
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Two Storey Rear GuideRules, design options, costs and next steps.
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Loft Conversion GuideRules, design options, costs and next steps.
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guidesClear, jargon-free
explanations£15 off matching drawing packagesExplore all guides
Got a Permitted Development question?
Ask about extensions, lofts, garages, garden rooms, Building Regulations or our drawing packages. Get clear answers based on current UK rules.
Popular questions:
General information from our own guidance. Not planning permission, a Lawful Development Certificate or Building Control approval, and it cannot confirm what is allowed on a specific property.
Drawn around the standard householder limits.
Professional technical drawings and details.
No hidden costs.
Emailed after payment.
Eight pre-designed projects.
Each one is already drawn. You choose the material, roof and options we actually draw, and that is the package you receive.
A practical entrance area that adds space and improves the look of your home.
£350
A popular way to create a larger kitchen, dining or family area.
£900
Adds valuable space to the side of your home for a kitchen or utility.
£900
Turns unused loft space into a bedroom, office or additional living area.
£1,500
A flexible, detached space for work, leisure or extra living space.
£350
Secure parking or useful storage, single or double.
£350
Significantly more living space across both floors.
£1,400
A bright, glazed room connecting your home to the garden.
£900Four steps, one page.
You can stop and come back at any point before you pay.
Your property
Enter your postcode once. We find your local planning authority and ask about the house.
Choose your extension
Pick from the eight pre-designed projects.
Configure your design
Choose the real options we draw. Your design and price update as you go.
Review and buy
Check the scope, then pay securely. Add more than one extension if you need to.
A complete, coordinated drawing set.
Every package contains the same set of sheets, supplied as PDF and supplied as sold — floor plan, roof plan, elevations, foundation and drainage, sections, services layout, standard construction details and a full written specification.
- Eight drawings plus the full Building Regulations and construction specification
- Supplied as PDF, emailed after payment
- Structural engineering design and calculations are not included, and can be arranged separately at additional cost where required
Understand the rules before you build.
Written guidance on the householder Permitted Development rules, by project type.
Depth, height and the limits that apply to a rear extension.
Volume allowances and where a dormer can go.
Class E limits, height and the 50% curtilage rule.
How designated land changes what you can do.
No Permitted Development rights? We can still help.
PERMITTED is part of YPDS Architectural Services, a Leeds architectural design practice. If your property does not benefit from the Permitted Development rights your project needs, it becomes a planning enquiry — and they can advise, design and prepare a planning application.
- Full architectural design service
- Planning applications prepared and managed
- Building Regulations drawings and submissions
- Measured surveys and bespoke design
See what you could build at your property.
Start with your postcode. It takes a couple of minutes.
Start your project