The regulations set out in Sections 17.20.020 through 17.20.080 shall apply in all No. 1 districts.

Permitted uses in the R-1, single-family residential district are as follows:

1. Single-family detached dwellings;
2. Home occupations, as permitted in accordance with provisions of Section 17.08.390 of this title; and
3. Parks and forest preserves.

The following uses may be allowed by special use permit in accordance with the provisions of Chapter 17.48 of this title:

1. Nonprofit and charitable institutions;
2. Private clubs or lodges, except those the chief activity of which is a service customarily carried on as a business;
3. Churches, rectories, seminaries, convents, monasteries and similar religious institutions;
4. Community swimming pools;
5. Day nursery schools;
6. Daytime or nighttime care centers;
7. Educational institutions;
8. Golf courses, public or private;
9. Offices, business and professional;
10. Planned community developments;
11. Public service uses, including but not limited to:
    Filtration plant;
    Sewage treatment plant;
    Police and fire stations;
    Telephone exchange;
    Electric substations and booster stations;
    Other governmental uses.
12. Bed and breakfast inns;
13. Cemetery, crematory, mausoleum;
14. A conversion of a single-family dwelling to a two-family or multi-family dwelling.
15. Short-term Rental Properties as defined in Section 17.08.730.
    

Lot size requirements are as follows:

1. Every principal permitted use in this section shall be located on a tract of land having an area of not less than ten thousand square feet and a width at the established building line of not less than eighty feet.
2. Every special use permitted in the R-1 district shall be located on a tract of land the minimum size of which shall be specified at the time a special use permit is authorized.

No building shall be erected or enlarged unless the following yards are provided and maintained in connection with such building, structure or enlargement:

1. Front Yard. A front yard equal to at least one-half the right-of-way of the street on which the lot fronts. However, in no case shall the front yard be less than thirty feet nor require more than sixty feet.
2. Side Yard. A side yard on each side of the zoning lot of not less than ten feet, except, where a side yard adjoins a street, the minimum width shall be increased to one-half the right-of-way of the adjoining street, with a maximum of sixty feet.
3. Rear Yard. A rear yard shall be not less than twenty-five feet.

In the R-1 district, no building shall be erected or altered to a height in excess of thirty-five feet or two and one-half stories.

All buildings including accessory buildings shall not cover more than thirty percent of the net site area.

Accessory buildings shall be located on the same lot with the principal building, shall not be less than ten feet from the principal building if not attached, shall not exceed fifteen feet in height, nor be less than six feet from the side or rear lot line.