(1) All fixtures and other structures directly attached to the structure.

(2) Landscaping on the lot.

(1) Improvement to any structure if the structure or the improvement is located: on a beach; in a wetland, stream, or lake; seaward of the mean high tide line; in an area designated as highly scenic in a certified land use plan; or within 50 feet of the edge of a coastal bluff;

(2) Any significant alteration of land forms including removal or placement of vegetation, on a beach or sand dune; in a wetland or stream; within 100 feet of the edge of a coastal bluff, in a highly scenic area, or in an environmentally sensitive habitat area;

(3) The expansion or construction of water wells or septic systems;

(4) On property not included in subsection (b)(1) above that is located between the sea and the first public road paralleling the sea or within 300 feet of the inland extent of any beach or of the mean high tide of the sea where there is no beach, whichever is the greater distance, or in significant scenic resource areas as designated by the commission or regional commission, an improvement that would result in an increase of 10 percent or more of internal floor area of the existing structure, or constitute an additional improvement of 10 percent or less where an improvement to the structure has previously been undertaken pursuant to Public Resources Code Section 30610(b), and/or increase in height by more than 10 percent of an existing structure;

(5) In areas which the commission or regional commission has previously declared by resolution after public hearing to have a critically short water supply that must be maintained for protection of coastal recreation or public recreational use, the construction of any specified major water using development including but not limited to swimming pools or the construction or extension of any landscaping irrigation system;

(6) Any improvement to a structure where the coastal development permit issued for the original structure by the commission, regional commission, or local government indicated that any future improvements would require a development permit;

(7) Any improvement to a structure which changes the intensity of use of the structure;

(8) Any improvement made pursuant to a conversion of an existing structure from a multiple unit rental use or visitor-serving commercial use to a use involving a fee ownership or long-term leasehold including but not limited to a condominium conversion, stock cooperative conversion or motel/hotel timesharing conversion.