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
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.
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.
View guide
Rules, design options, costs and next steps.
View guide
Replacing windows and doors can improve your home’s appearance, comfort and energy efficiency. In many cases, these changes can be made under Permitted Development (PD) without a full planning application.
See what you could build at your home and choose the right drawing package.
Most replacement windows and doors fall under Class A of the Permitted Development Order. The main limits relate to the appearance, materials and whether the property is a listed building or in a conservation area, where additional rules may apply.
Your new windows or doors must comply with all of the relevant PD rules. If any single limit is exceeded, a normal planning application may be required.
A range of windows and doors can often be replaced under PD, including:
WindowsLike-for-like or similar style replacements, such as uPVC, timber or aluminium.
External doorsFront, side or rear doors can often be replaced.
Patio doorsIncluding French doors and bi-folding doors.
Roof windowsCertain roof windows can be replaced or added under PD (subject to limits).Replacement windows and doors must be similar in size and appearance to the existing ones. Enlarging openings or creating new ones may require planning permission.


The new windows and doors should be of a similar appearance to the existing ones, especially on the front elevation or in a conservation area. Different materials or styles may need planning permission.


If your property is listed or in a conservation area, additional rules apply and you may need planning permission, even for like-for-like replacements.


New windows and a front door, in a similar style to the existing ones — replaced under PD without a planning application.
Builder-ready drawings supplied exactly as sold.
We will check your property, apply the relevant Permitted Development rules and help you configure the right design and drawing package for your home.
Permitted Development rights described on this page apply to houses in England under the Town and Country Planning (General Permitted Development) (England) Order 2015. Different planning rules apply in Scotland, Wales and Northern Ireland. This page is general guidance, not a formal planning determination — always check your own property and, where you need certainty, apply to your local planning authority for a Lawful Development Certificate.
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.
£900We use cookies that are needed to run the basket and checkout. We would also like to use analytics cookies to understand how the site is used. We only do that if you say yes.
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