Part 7: Conservation Covenants Section 133: Effect of acquisition or disposal of affected land by responsible body
Generally when land that is burdened by an obligation or interest (for example, a restrictive covenant or an easement), and the land that benefits from that interest, come into the same ownership, the interest comes to an end. If the land subsequently returns to separate ownership, the interest does not revive. This is known as the doctrine of unity of seisin, or unity of ownership.
	By contrast, section 133 provides that where the responsible body under a conservation covenant acquires an estate in land to which an obligation under the covenant relates, this does not extinguish the obligation. The responsible body is bound by the obligation. When the responsible body disposes of land, the obligation remains in force.