We prepare and submit the full planning application for your garden room, garden office, shed or outbuilding — drawings, planning statement, forms and submission — written by a Chartered Town Planner who knows what councils approve and what they don't. Fixed fees from £395 + VAT.
Or email: hello@gardenroomplanningpermission.co.uk
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 & distance from boundaries
Under Class E of the GPDO 2015, the maximum permitted height depends on roof type and distance from boundaries. The total area covered by outbuildings must not exceed 50% of the curtilage (the land around the original house).
The eaves height is the point where the wall meets the underside of the roof. If the structure sits on a raised platform, decking or base, include that in the measurement — measure from ground level up to the eaves.
Will more than 50% of the garden remain as open space?
Include front, side and rear gardens. The total ground area covered by all outbuildings (excluding the original house) must not exceed 50% of the total curtilage.
Distance from the nearest boundary?
If any part of the structure is within 2 metres of a boundary, the maximum height is limited to 2.5 metres at the eaves.
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.
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Planning permission →
Garden room, garden office, shed and outbuilding planning applications look simple — until the council rejects your submission because the drawings don't meet validation standards or there's insufficient supporting information. Most local authorities now charge fees for invalid applications, and having to redo drawings costs time and money. We get it right first time, every time.
This is what we do all day. Garden room planning permission, garden office planning permission, shed planning permission and outbuilding planning permission — permitted development quirks, eaves heights, ridge heights, distances from boundaries, sleeping accommodation, ancillary use — every angle covered before the application leaves our desk.
Existing and proposed plans, elevations, sections, location plan and block plan — all produced in-house to council validation standards. No second invoice from an architect or draughtsman.
Every application is built around the Local Plan, the national planning policy framework (NPPF in England, PPW in Wales, NPF4 in Scotland) and the relevant permitted development rules — not a templated document with the address swapped out. Written from scratch by a Chartered Town Planner.
£395 + VAT for a Certificate of Lawful Development. £495 + VAT for a full planning application with drawings and planning statement. No hourly billing. No mid-project surprises. Council fees paid separately at cost.
When you come to sell, your buyer's solicitor will ask whether the garden room had planning permission or qualifies as permitted development. Without a Certificate of Lawful Development on file, it can hold up or even derail a sale. Before you spend thousands on a garden office or garden room, confirm the planning position first — a CLD gives you formal council confirmation in writing that the build is lawful.
The same four steps whether your build is a garden room, a garden office, a shed or any other outbuilding.
Send a few details about what you want to build (or use the planning checker). A Chartered Town Planner reviews and tells you whether you need permission, whether it's permitted development, or whether a Certificate of Lawful Development is the smarter route.
Fixed fee from £395 + VAT, agreed in writing. Secure payment link sent to you. Work starts the same day on receipt of payment.
Within seven working days we produce your full set of planning drawings (existing and proposed), the policy-based planning statement and any supporting documents.
We submit through the Planning Portal and act as your registered planning agent throughout determination, responding to officer queries until a decision is issued.
Real applications, real strategy, anonymised to protect our clients. Detailed case studies coming soon.
Whether you need a quick check, formal confirmation that your build is lawful, or a full planning application with drawings — one fixed fee, agreed in writing before we start.
Find out in under 2 minutes whether your garden room or outbuilding is likely to need planning permission.
The complete package — drawings, planning statement, forms and submission by a Chartered Town Planner.
Formal council confirmation that your build is lawful under permitted development. Essential before building.
Not sure which you need? Start with the free online checker or request a free check from a Chartered Town Planner. We'll tell you which route is right before you spend a penny. Council application and CLD fees are paid directly by you to the council, not through us.
The rules around garden room planning permission, garden office planning permission, shed planning permission and outbuilding planning permission are some of the most misunderstood in the planning system. Here are the questions we hear most.
If you're not sure whether your build needs a planning application, the safest first step is a free check from a Chartered Town Planner.
View All FAQs →Free check from a Chartered Town Planner. We'll tell you whether you need permission — before you spend a penny.
We work alongside leading garden room, garden office and outbuilding suppliers across the UK. If you're a supplier and would like to partner with us, get in touch.