Tell us about your garden room, garden office, shed or outbuilding and a Chartered Town Planner will get back to you with an honest view on whether you need planning permission — usually the same working day.
Garden room, garden office, shed or outbuilding — find out in under 2 minutes.
What type of property is this for?
Permitted development rights for outbuildings only apply to dwellinghouses. Flats are excluded by law.
Where would the structure go?
Even though flats don't have permitted development rights for outbuildings, we'd like to understand your proposal so we can advise on the best route for a planning application.
What type of development are you considering?
Tell us a bit more so we can advise on the planning application route and likely prospects.
What are the approximate dimensions?
Don't worry if you're not sure yet — rough figures are fine at this stage.
Enter the postcode or address
Enter the property postcode and we'll automatically check the national planning constraint maps for conservation areas, national parks, listed buildings, Article 4 directions, Green Belt and other designations that affect permitted development.
Checking planning.data.gov.uk…
Where on the plot will the structure be built?
This is one of the most critical factors. Structures forward of the principal elevation are not permitted development.
Size and proximity to boundaries
Permitted development height limits depend on roof type and distance from boundaries. Adjust the sliders to your proposed structure.
Distance from the nearest boundary?
The 2m rule is the single biggest height determinant under Class E.
What will the structure be used for?
Permitted development under Class E requires that the building is incidental to the enjoyment of the dwellinghouse — it cannot be a separate home or business premises.
Almost done — enter your details to see your results
Your personalised planning assessment will appear on the next page.
We'll also send a copy to your inbox for your records.
We'll only use your email to send these results. No spam, ever.
Fill in the form below and we'll get back to you the same working day.
The first check is always free and there's no obligation to take things further. Whether your garden room, garden office, shed or outbuilding is a future build or already standing, we'll give you a straight answer about whether you need planning permission, whether you qualify under permitted development, or whether a Certificate of Lawful Development is the smartest route. Where a planning application is needed, the fixed fee covers everything.
UK-wide
England, Wales, Scotland and Northern Ireland
from £395 + VAT
£395 + VAT for a CLD, £495 + VAT for a full planning application
7 working days
From instruction to a complete, ready-to-submit application package
No obligation. We'll get back to you the same working day where possible.
Drop us a line and a Chartered Town Planner will get back to you the same working day.