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 Carport in Brentwood?
A covered structure for parking vehicles, open on at least two sides. Carports follow the same PD rules as outbuildings, with the additional requirement that they must remain open-sided.
Planning in Brentwood
83%
of planning applications granted
90%
decided within the statutory or agreed time
36%
of householder applications decided within 8 weeks
In the year to December 2025, Brentwood decided 742 planning applications. 455 of these were householder projects such as extensions, loft conversions and outbuildings, of which 85% were granted.
Planning statistics: MHCLG planning application statistics, the year to December 2025. Conservation area and Article 4 data: planning.data.gov.uk, © Historic England / Crown copyright. Open Government Licence v3.0.
Important: Additional Restrictions May Apply in Brentwood
Brentwood has 13 conservation areas. These include Blackmore, Brentwood Town Centre, Fryerning, Great Warley, Herongate, Highwood Hospital, Brentwood. If your property is in a conservation area, some or all permitted development rights may be restricted. For example, you may need planning permission for changes that would normally be permitted, including alterations to the roof, cladding, or extensions visible from a public highway.
Check with Brentwood planning department before starting work to confirm whether your property is affected by any special designations.
Permitted Development Rules for a Carport
Generally permitted under Part 1, Class E as an outbuilding. A carport must be open on at least two sides to distinguish it from a garage. The same height and area limits apply as for other outbuildings.
Conditions
- 1Must be open on at least two sides
- 2Must not be forward of the principal elevation fronting a highway
- 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
- Enclosing a carport on more sides effectively creates a garage, potentially changing its PD status
- Designated area restrictions apply
- Must remain for purposes incidental to the dwelling
What About Building Regulations?
Building regulations approval is not usually required
Carports are normally exempt from Building Regulations as open-sided structures under 30 square metres. If enclosed, the same rules as outbuildings apply based on floor area and proximity to boundaries.
Building regulations are separate from planning permission. Even if your project is permitted development, you may still need building regulations approval. Contact Brentwood building control or use an approved inspector.
How to Apply in Brentwood
If you need planning permission for your carport, you can apply through Brentwood's planning department or via the national Planning Portal.
If your project is permitted development and you want written confirmation, you can apply for a Lawful Development Certificate (LDC) from Brentwood. This provides proof that your project does not need planning permission, which can be helpful when selling your property.
What Happens If I Build Without Permission?
Low risk if within PD limits. Enclosing a carport to create a garage without checking PD compliance could attract enforcement. Carports forward of the principal elevation are not permitted development.
Frequently Asked Questions
Do I need planning permission for a carport in Brentwood?
Does a carport in Brentwood need building regulations?
How do I apply for planning permission in Brentwood?
How long does planning permission take in Brentwood?
What percentage of planning applications does Brentwood approve?
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