Md. Code, Land Use § 8-101

(a) In this title the following words have the meanings indicated.

(b) “Appurtenance and environmental setting” includes:

(1) paved or unpaved walkways and driveways;

(2) trees;

(3) landscaping;

(4) pastures;

(5) croplands;

(6) waterways; and

(7) rocks.

(c) “Commission” includes a historic district commission or a historic preservation commission.

(d) “Demolition” includes any willful neglect in the maintenance and repair of a structure, other than the appurtenance and environmental setting of the structure, that:

(1) is not due to a financial inability to maintain and repair the structure; and

(2) threatens to result in a substantial deterioration of the exterior features of the structure.

(e) “District” means a significant concentration, linkage, or continuity of sites, structures, or objects united historically or aesthetically by plan or development.

(f) “Person” includes a unit of local government.

(g) “Routine maintenance” means work that:

(1) does not alter the exterior fabric or features of a site or structure; and

(2) has no material effect on the historical, archaeological, or architectural significance of the site or structure.

(h) “Site” means the location of:

(1) an event of historic significance; or

(2) a structure or ruin that possesses historic, archaeological, or cultural significance.

(i) (1) “Structure” means a combination of material to form a construction that is stable.

(2) “Structure” includes:

(i) a building;

(ii) a stadium;

(iii) a reviewing stand;

(iv) a platform;

(v) staging;

(vi) an observation tower;

(vii) a radio tower;

(viii) a water tank or tower;

(ix) a trestle;

(x) a bridge;

(xi) a pier;

(xii) paving;

(xiii) a bulkhead;

(xiv) a wharf;

(xv) a shed;

(xvi) a coal bin;

(xvii) a shelter;

(xviii) a fence;

(xix) a display sign that is visible or intended to be visible from a public way; and

(xx) a part of a structure.