East Sussex · BN1, BN2, BN3
Annexes in Brighton and Hove
An annexe is self-contained living accommodation on the same plot as a main house, complete with its own kitchen and bathroom facilities, built either as a new detached structure, a conversion of an existing outbuilding, or an extension with its own entrance.
In Brighton and Hove, that covers Kemp Town, Hove, Preston Park, Hanover, Seven Dials, Fiveways, Patcham, Portslade. Brighton and Hove is known for its Regency architecture, extensive Victorian terraced housing, and later 20th-century development, all within a compact coastal city where many properties are in conservation areas and a significant number are listed.
Coverage
Areas we cover in Brighton and Hove for annexes
Property styles in Brighton and Hove
Regency squares and terraces are concentrated around Brunswick, Kemp Town and the seafront, with dense Victorian terraced housing across much of the wider city, and later suburban housing further from the centre. Basement conversions, loft conversions and rear extensions are common project types on the terraced stock, subject to conservation area and party wall considerations.
Planning considerations
Brighton & Hove City Council is the local planning authority. The city has one of the highest concentrations of conservation areas of any local authority in the South East, and many properties are listed, particularly in the Regency squares. Basement work also requires careful consideration of structural and drainage issues in a dense urban setting.
How it works
Our annexes process
- 01
Feasibility and planning strategy
Assessing the plot, existing structures and local planning policy for ancillary accommodation, and whether a new build, conversion or extension route is best.
- 02
Design and approvals
Preparing drawings, submitting for planning permission (usually required for annexes with independent facilities) and Building Regulations.
- 03
Construction
Groundworks and structure (for a new build), or structural and fabric works to the existing building (for a conversion), followed by full services connections.
- 04
Fit-out and completion
Kitchen and bathroom fit-out, decoration, and Building Control sign-off.
Also in this area
Other services we provide in Brighton and Hove
Nearby coverage
Annexes in nearby areas
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FAQs
Annexes in Brighton and Hove: FAQs
Do you provide annexes across all of Brighton and Hove?
Yes, we cover the BN1, BN2 and BN3 postcode areas in full, including Kemp Town, Hove, Preston Park, Hanover, Seven Dials, Fiveways, Patcham, Portslade.
Do I need planning permission for an annexe?
Usually yes, because independent cooking, sleeping and washing facilities mean the structure is not treated as a simple outbuilding. Some annexes intended purely as ancillary accommodation for the main house can fall under permitted development, but this depends on size, position and local policy, which we check during feasibility.
Can an existing garage or outbuilding be converted into an annexe?
Yes, provided the structure is suitable and can be brought up to full Building Regulations standard for insulation, damp-proofing and services. We assess this as part of the feasibility stage alongside a new-build option.
Can I extend a listed Regency property in Brighton?
Alterations to listed buildings require listed building consent in addition to any planning permission, and the historic character of Regency terraces means proposals are considered carefully. We assess feasibility on a case-by-case basis.
Get a quote for annexes in Brighton and Hove
Tell us about the property and what you have in mind, and we'll arrange a site visit.
Last reviewed 2026-07-28.