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Where dwellings are allowed in non-residential zones, they are subject to all of the following requirements.

A. Dwellings in the E-1 zone are limited to the R-overlay zone. See chapter 18.3.13 Residential Overlay.

B. Dwellings in the E-1 and C-1 zones shall meet all of the following standards:

1. If there is one building on a site, ground floor residential uses shall occupy not more than 35 percent of the gross floor area of the ground floor. Where more than one building is located on a site, not more than 50 percent of the total lot area shall be designated for residential uses.

2. Residential densities shall not exceed 15 dwelling units per acre in the E-1 zone, 30 dwelling units per acre in the C-1 zone, and 60 dwelling units per acre in the C-1-D zone. For the purpose of density calculations, units of less than 500 square feet of gross habitable floor area shall count as 0.75 of a unit.

3. Residential uses shall be subject to the same setback, landscaping, and design standards as for permitted uses in the underlying zone.

4. Off-street parking is not required for residential uses in the C-1-D zone.

5. Where the number of residential units exceeds ten, at least ten percent of the residential units shall be affordable for moderate-income persons in accord with the standards of section The number of units required to be affordable shall be rounded down to the nearest whole unit.