Alexandria

The vertical distance, as measured from the average pre-construction grade along a building wall which faces a street, to the top of the finished first floor.

A unit of land at all times above elevation +3.0 feet mean sea level, U.S. Coast and Geodetic Survey, usable as a building site, having frontage on a public street and in compliance with the requirements of the zone in which it is situated and recorded.

The mean horizontal distance between front and rear lot lines measured perpendicular to the street or radially to the street when the street lies on a curve.

The length of a front lot line.

The distance along a straight line measured between the side lot lines or, in the case of a corner lot, a side lot line and secondary front lot line, at the zone's minimum front yard requirement. The front yard requirement established by a contextual block face shall not apply to lot width determination.

Permanent concrete or stone markers not less than five inches in diameter and not less than 30 inches in length, with an appropriate center mark of nonferrous metal pin or plate.

That portion of a lot at ground level which is: (A) No less than eight feet in width and length. (B) Unoccupied by principal or accessory buildings; (C) Unoccupied by principal or accessory structures except for fences, walls, or trellises and pergolas in accordance with section 7-202(A)(5); (D) Unobstructed by other than recreational facilities; and (E) Not used in whole or in part as roads, alleys, emergency vehicle easement areas, driveways, maneuvering aisles or off-street parking or loading berths.

A fence structure the surface of at least 50 percent of which is uncovered.

A porch shall not be enclosed with walls, glass, screens, or similar. Railings shall be permitted no higher than three-and-one-half feet or the minimum height required by the Virginia Uniform Statewide Building Code (USBC), whichever is higher. Balusters shall be spaced so as to leave at least 50 percent of the perimeter length of the railings open.

A porch that adjoins any entrance of a dwelling, does not project more than six feet from a building wall, and is not more than nine feet in length. These dimensions shall include any roof overhang.

The ratio of the horizontal distance between any part of a building or structure and the nearest side or rear property line or the nearest building or the center line of a street or alley to the height of that part of the building above average finished grade of such line, except that for buildings in the R-20, R-12, R-8, R-5, R-2-5 and single-unit and two-unit dwellings in the RA and RB zones not including property located within the Old and Historic Alexandria and Parker-Gray Districts, height shall be measured from the average pre-construction grade of such line.

A structure, which is clearly subordinate to the principal building or structure. An accessory structure generally does not exceed the height of the principal building or structure.

A use which is clearly subordinate to and serves a permitted principal use; and is subordinate in area, extent and purpose to the principal use served. An accessory use generally occupies less than one-third of the gross floor area of the principal use and does not change the character of the principal use.

That definition provided in section 13-103 of this ordinance regarding the Chesapeake Bay Preservation Overlay District.

A yard extending across the width of a lot between the front lot line and the main building or any projection thereof not permitted in section 7-202. For a corner lot, the two yards lying between the main building and the intersecting streets shall both be deemed to be front yards and any additional yards shall be deemed to be side yards. For a through lot, the two or more yards lying between the main building and the two or more public streets shall be deemed to be front yards.

The area extending across the rear of a lot measured between the side lot lines and being the minimum horizontal distance between the rear lot line and the main building or any projection thereof not permitted in section 7-202(A).

An open, unoccupied space on the same lot with the building, between the building and the side lot line and extending from the front yard to the rear yard and being the minimum horizontal distance between the side lot line and the main building or any projection thereof not permitted in section 7-202(A).

The following uses are permitted in the RD zone: (A) Multi-unit dwelling; (B) Accessory uses, as permitted by section 7-100; ...

Max density 50 du/ac, min lot 5000 sqft, front yard at least 15 ft, side/rear 3 ft, FAR 1.50, height 30 ft.

The following uses are permitted in the RM zone: (A) Single-unit dwelling; (B) Two-unit dwelling; (C) Townhouse dwelling; ...