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City of Portsmouth Zoning Ordinance <br />Article II. — Zoning Districts <br />Sec. 40.2 -206 — Historic Districts <br />Dimensional Standards <br />11/6/2020 <br />(1) Table 40.2- 206(1) Dimensional Requirements within the Historic Districts, sets out the <br />dimensional standards required for each of the five historic districts, except as modified <br />by the following regulations: <br />(a) New construction, additions, or other improvements shall not create more than two <br />(2) square feet of floor area per each square foot of lot size. <br />(b) Establishment of a new nonresidential building or conversion of a dwelling unit to an <br />office shall require a minimum lot size of at least 4,500 square feet. <br />(c) In Port Norfolk, lots with a four - family dwelling, one additional unit is permitted for <br />each additional 5,600 square feet of lot area over 11,200 and /or additional four - family <br />dwellings may be permitted for each additional 11,200 square feet of lot area over <br />11,200. <br />(d) In Olde Towne and Park View, lots with a four - family dwelling, one additional unit <br />may be permitted for each additional 3,045 square feet of lot area over 6,090. <br />Table 40.2- 206(1): DIMENSIONAL REQUIREMENTS WITHIN HISTORIC DISTRICTS <br />MAXIMUM MAXIMUM <br />HISTORIC MINIMUM BUILDING HEIGHT FOR <br />USE TYPE LOT SIZE NEW <br />DISTRICT (Square Feet) OVERAGE CONSTRUCTION <br />(Feet) <br />Single- family detached 2,500 <br />or two- family dwelling <br />Three- family dwelling <br />Truxtun <br />2,500 <br />70 <br />Four- family dwelling <br />4,500 <br />Nonresidential use <br />2,500 <br />Single- family detached <br />4,500 <br />or two- family dwelling <br />Cradock Three-family dwelling <br />13,500 <br />Four- family dwelling <br />16,500 <br />70 <br />35 <br />20 <br />20 <br />Page 20 <br />