The purpose of a conservation area, as defined in the Planning (Listed Buildings and Conservation Areas) Act 1990 is to identify areas deemed to be of 'special architectural or historic interest, the character or appearance of which it is desirable to preserve or enhance'.
      Brighton and Hove has 34 such areas.

Each has (or should have) a character statement describing it, to identify its reasons for designation. Ideally, this should be accompanied by a management plan, prepared by the local authority, to propose ways in which it can be maintained and improved.
      The conservation area in which a designated street is located is shown in the street listing (links below).