The legal basis for the establishment and authority of Lymington Harbour is set out in the Pier and Harbour Order (Lymington) Confirmation Act, 1951 and the subsequent Lymington Harbour Revision Orders (HRO) 1976 to 2014.
The most recent HRO, (The Lymington Harbour Revision Order 2014) which came into force in May 2014, provides a statement of the limits of the harbour within which the Commissioners exercise jurisdiction as a harbour authority. It gives authority to make regulations (General Directions) for the purpose of promoting or securing safe and harmonious use of the harbour and the protection of the environment. It provides powers to regulate and licence water taxi services and sets out the information required for the purposes of landing charges. The HRO also updates the Commissioners powers to save and borrow money if necessary to ensure that Lymington Harbour is handed on in the same or better condition for future generations.