Dimensional standards
Extracted standards
19 individual requirements pulled out of this section’s prose, each with the sentence it came from.
Other
- AccessoryAccessory useA secondary activity customarily incidental to the main use of the lot — a garage, a home office. building heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. relative to principal
An accessory building shall not exceed the height of the principal building.
- AccessoryAccessory useA secondary activity customarily incidental to the main use of the lot — a garage, a home office. building max floor area ratioFloor area ratio (FAR)Total floor area divided by lot area — an FAR of 2.0 permits 20,000 sq ft of floor on a 10,000 sq ft lot.0.33 ratio
An accessory building's gross floor area shall not exceed one-third of the principal building's gross floor area.
- Accessory useAccessory useA secondary activity customarily incidental to the main use of the lot — a garage, a home office. max floor area ratioFloor area ratio (FAR)Total floor area divided by lot area — an FAR of 2.0 permits 20,000 sq ft of floor on a 10,000 sq ft lot.0.33 ratio
An accessory use generally occupies less than one-third of the gross floor area of the principal use.
- Floor area accessoryAccessory useA secondary activity customarily incidental to the main use of the lot — a garage, a home office. dwelling max exclusion65 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
The total floor area excluded pursuant to section 2-145(B)(12) and this subsection shall not exceed 65 square feet.
- Floor area architectural feature max projection30 in
Architectural features up to a maximum projection of 30 inches extending beyond an exterior face of a building wall or column.
- Floor area attic min ceiling heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first.7 ft
Attic floor area with a ceiling height of less than seven feet or where the space with the ceiling height of seven feet or more is less than four feet wide
- Floor area attic min width4 ft
or where the space with the ceiling height of seven feet or more is less than four feet wide
- Floor area balcony max exclusion depth8 ft
Space under open balconies and similar structures projecting from a floor above the first floor up to a maximum depth of eight feet.
- Floor area basement included for parking
Basements (except shall be included for purposes of calculating the off-street parking requirements pursuant to Article VIII).
- Floor area multiplier for ceiling heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. >= 15 ft2 multiplier
Floor area with a ceiling height 15 feet or greater shall be counted twice.
- Floor area multiplier for ceiling heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. >= 25 ft3 multiplier
Floor area with a ceiling height 25 feet or greater shall be counted three times.
- Floor area lavatory max exclusion percentage10 pct
The maximum total of excludable area for lavatories shall be no greater than ten percent of gross floor area.
- Floor area lavatory max exclusion50 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
Lavatories of which only a maximum of 50 square feet of each lavatory can be excluded.
- Floor area loading space max exclusion850 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
Loading spaces of which only a maximum of 850 square feet for each required loading space per section 8-200(B)(2) can be excluded.
- Floor area porch max exclusion depth8 ft
Porticos and portions of porches, including wrap-around porches, up to eight feet in depth located on the first or ground floor
- Porch railing maximum heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first.3.5 ft
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.
- Porch railing minimum open percentage50 pct
Balusters shall be spaced so as to leave at least 50 percent of the perimeter length of the railings open.
- Portico maximum length9 ft
and is not more than nine feet in length.
- Portico maximum projection6 ft
A porch that adjoins any entrance of a dwelling, does not project more than six feet from a building wall
From the ordinance
An accessory dwelling shall be considered an accessory use. A use which is clearly subordinate to and serves a permitted principal use.