Manhattan beach prestige area. There is possibility to build mention or 2- 1 family houses.R3-1 districts permit relatively small single-and two-family homes. The buildings may be detached or semi-detached. Two- family semi-detached houses must have at least 75 percent of one dwelling unit directly above the other. R3-1The maximum FAR is the same for R3 districts: 0.5 plus an additional attic allowance of 0.1 FAR. Above 21 feet, a building is usually set back or under a pitched roof with a maximum height of 35 feet. All R3 districts require one parking space for each dwelling unit.