This is general guidance based on standard permitted development rights in England. Rules differ for listed buildings, conservation areas, and properties with Article 4 directions. Always confirm with your local planning authority before starting work.
Do I Need Planning Permission for a Greenhouse?
A glazed garden structure for growing plants. Greenhouses follow the same permitted development rules as other garden outbuildings.
The General Position
This project is usually allowed under permitted development rights without needing to apply for planning permission, provided certain conditions and limits are met.
Generally permitted under Part 1, Class E as an outbuilding for purposes incidental to the enjoyment of the dwelling. The same height and area rules apply as for sheds and other outbuildings.
Conditions and Requirements
- 1Must be for purposes incidental to the enjoyment of the dwelling
- 2Must not be forward of the principal elevation
- 3Same height limits as outbuildings (2.5m within 2m of boundary; 4m/3m elsewhere)
- 4Must not cover more than half the curtilage
Size and Dimension Limits
- Height within 2m of boundary: 2.5m maximum
- Height elsewhere: 4m (dual pitch) or 3m (other roofs)
- Total outbuilding area must not exceed 50% of curtilage
When Permitted Development Does Not Apply
- Designated area restrictions apply
- Must not be used for commercial growing or retail
- Large greenhouses may attract neighbour complaints about overshadowing or visual impact
What About Building Regulations?
Greenhouses are normally exempt from Building Regulations as single-storey outbuildings under 30 square metres with no sleeping accommodation. Any electrical installation must comply with Part P.
Building regulations are separate from planning permission. You may need both, one, or neither depending on your project. Building regulations cover the safety and quality of building work, including structural integrity, fire safety, insulation, ventilation, and drainage.
How to Apply for Planning Permission
Check if you need permission
Review the permitted development rules above. If in doubt, contact your council or apply for a Lawful Development Certificate.
Prepare your application
You will need scaled drawings, a site plan, and a completed application form. An architect or planning consultant can help with this.
Submit to your local council
Applications can be submitted online via the Planning Portal or directly to your council. Select your council below for a direct link.
Wait for a decision
8 weeks for householder planning applications if PP is needed..
Application cost: £258.
What Happens If I Build Without Permission?
Very low risk for domestic greenhouses within PD limits. Enforcement is rare unless the greenhouse is unusually large or used for commercial purposes.
Find a Builder for Your Greenhouse
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Select Your Council
Choose your local council for guidance specific to your area, including links to apply and whether your council has conservation areas or Article 4 directions that could affect your project.
London
South East
South West
East of England
East Midlands
West Midlands
North East
North West
Yorkshire and the Humber
CA = has conservation areas. A4 = has Article 4 directions. These may restrict your permitted development rights.