Section 309 - Residential facilities for persons with disabilities(a) For purposes of all local zoning ordinances a residential facility licensed or approved by a state agency serving 10 or fewer persons with disabilities on a 24 hour-per-day basis shall be construed to be a permitted single family residential use of such property.(b) For the purposes of this section, the term "persons with disabilities" includes any persons with a handicap or disability as those terms are defined in the Delaware Fair Housing Act Chapter 46 of Title 6.62 Del. Laws, c. 390, §4; 74 Del. Laws, c. 149, §§ 9 - 11.;