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.
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Rules, design options, costs and next steps.
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Rules, design options, costs and next steps.
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Rules, design options, costs and next steps.
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Rules, design options, costs and next steps.
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Rules, design options, costs and next steps.
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Rules, design options, costs and next steps.
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Rules, design options, costs and next steps.
View guideAn orangery follows the same planning rules as a single-storey rear extension — usually permitted development. Here are the size limits, building regulations requirements, and costs.
No — an orangery is treated in planning terms as a single-storey rear extension and is usually permitted development, subject to the same size and location limits that apply to conservatories and extensions.
An orangery is a premium garden room with a mostly solid roof (typically a lantern light in the centre), solid dwarf walls to window height, and full thermal insulation. Despite costing considerably more than a standard conservatory, its planning position is the same: it is a single-storey rear extension under Part 1 Class A of the GPDO 2015.
This means that, within the permitted development limits, you can build an orangery without applying for planning permission, just as you would with a standard extension or conservatory.
In planning law, there is no distinction between an orangery and a conservatory — both are single-storey extensions. The difference is in construction and building regulations:
| Feature | Conservatory | Orangery |
|---|---|---|
| Roof | Mostly glazed (polycarbonate or glass) | Solid insulated roof with central lantern |
| Walls | Mostly glazed to floor | Solid dwarf walls to sill height, glazed above |
| Insulation | Limited (or exempt from building regs) | Fully insulated to extension standard |
| Building regulations | May be exempt | Always required |
| Planning position | Same as Class A extension | Same as Class A extension |
| Year-round use | Limited without extra heating | Designed for year-round use |
Because an orangery has a solid roof and is fully insulated, the building regulations conservatory exemption never applies. An orangery is always treated as a full extension for building regulations purposes.
Under Part 1 Class A GPDO 2015, an orangery is permitted development as a single-storey rear extension if:
| Rule | Limit |
|---|---|
| Rear projection (detached house) | Maximum 4m from original rear wall |
| Rear projection (semi/terraced) | Maximum 3m from original rear wall |
| Height | Maximum 4m; maximum 3m eaves height within 2m of boundary |
| Curtilage | Cannot cover more than 50% of original curtilage |
| Position | Not forward of principal elevation; not beyond side walls |
The same restrictions apply in conservation areas: a rear orangery within PD limits is permitted; a side orangery in a conservation area needs planning permission.
Unlike conservatories, orangeries always require building regulations approval. Because an orangery has a solid insulated roof and fully insulated walls, it cannot meet the conservatory exemption criteria. Building regulations cover:
A completion certificate is issued by building control on sign-off — important for future property sales and insurance purposes.
| Type | Typical Cost |
|---|---|
| uPVC/aluminium frame orangery (mid-spec) | £20,000 – £40,000 |
| Hardwood/bespoke orangery | £40,000 – £80,000 |
| Premium architect-designed orangery | £60,000 – £120,000+ |
| Building regulations application | £300 – £600 |
| Planning permission (if required) | £548 (householder) |
Orangeries cost significantly more than conservatories of similar size because of the heavier construction, solid roof structure, and higher insulation specification. However, they add more usable space and typically add more value to the property.
Our Conservatory drawing package is pre-designed to the permitted development limits and supplied exactly as sold — £900 fixed price, emailed to you as a PDF.
See the Conservatory package →
Check my property and start my project · Read the conservatory rules
Need the drawings? See our conservatory drawing set — supplied exactly as sold and emailed to you as a PDF.
Planning a project? Browse our permitted development drawing sets — fixed price, supplied exactly as sold and emailed to you as a PDF.
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.
£900PERMITTED 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 guidesRules, design options, costs and next steps.
View guideRules, design options, costs and next steps.
View guideRules, design options, costs and next steps.
View guideRules, design options, costs and next steps.
View guideRules, design options, costs and next steps.
View guideRules, design options, costs and next steps.
View guideRules, design options, costs and next steps.
View guideRules, 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
