A local planning authority may enter into an agreement with any person interested in land in their area for the purpose of restricting or regulating the development or use of the land, either permanently or during such period as may be prescribed by the agreement; and any such agreement may contain such incidental and consequential provisions (including provisions of a financial character) as appear to the local planning authority to be necessary or expedient for the purposes of the agreement.
An agreement made under this section with any person interested in land may be enforced by the local planning authority against persons deriving title under that person in respect of that land, as if the local planning authority were possessed of adjacent land and as if the agreement had been expressed to be made for the benefit of such land
Nothing in this section or in any agreement made thereunder shall be construed—
The power of a local planning authority to make agreements under this section may be exercised also—
and references in this section to a local planning authority shall be construed accordingly.