Accessory uses are permitted uses which are customary and incidental to principal uses permitted in the zone and shall be permitted outright, or by prescribed conditions as identified below, and may be either attached or separated from the principal dwelling. Accessory uses on designated historic resources are subject to additional regulations in CDC 25.060(B).

A.    A greenhouse may be a maintained accessory to a dwelling provided the activity does not exceed that which requires a license under ORS Chapter 571, Nurseries.

B.    A television disk or satellite dish larger than three feet in diameter, and any other non-commercial antennas over three feet in height (minor utility), may be a maintained accessory to a dwelling provided it is not located within the front yard or side yard abutting a street, it is mounted on the ground, is screened from view, as practical, with landscaping, and otherwise meets the requirements of CDC 34.060. The satellite dish shall not exceed a maximum height of 18 feet.

Where it can be demonstrated that these restrictions impose unreasonable limitations to the extent that the antenna/satellite dish’s reception or transmitting capability is significantly reduced, then roof-mounted (provided it is powder-coated with mesh or perforated construction) or alternate locations for the antenna/satellite dish may be allowed. (Ord. 1350, 1993; Ord. 1463, 2000; Ord. 1614 § 8, 2013; Ord. 1742 § 1 (Exh. A), 2023)

A.    One accessory dwelling unit (ADU), either attached or detached, may be allowed in conjunction with an existing primary single-family detached dwelling (excluding duplexes, triplexes and quadplexes) by conversion of existing space inside the primary dwelling; by means of an addition to an existing dwelling; by means of an addition as an accessory structure; or by converting or adding to an existing accessory structure, such as a garage, on the same lot with an existing primary dwelling, when the following conditions are met:

1.    Public services can serve both dwelling units.

2.    The maximum size of an ADU shall be:

a.    One thousand square feet when attached to the primary dwelling.

b.    One thousand square feet or 75 percent of gross square footage of the primary dwelling, whichever is less, when contained in a detached accessory structure.

3.    The ADU is in conformance with the setback and lot coverage requirements of the underlying zone.

4.    The maximum height of a detached ADU shall be the greater of:

a.    The height of the primary structure; or

b.    Twenty-six feet. (Ord. 1463, 2000; Ord. 1742 § 1 (Exh. A), 2023)

Noise-producing equipment (for example: heat pumps, swimming pool motors or filter pumps) may be placed within the side, front or rear yard setback, but no closer than three feet to the property line. (Ord. 1675 § 34, 2018; Ord. 1742 § 1 (Exh. A), 2023)

Only side yard setback requirements apply to boat houses and docks. (Ord. 1742 § 1 (Exh. A), 2023)

A.    Accessory structures shall comply with all requirements for the principal use except as provided in CDC 34.040 and where specifically modified by this code as follows.

B.    A side yard or rear yard requirement may be reduced to three feet for an accessory structure except for a side or rear yard abutting a street, with the exception of alleys platted and dedicated prior to September 30, 1984, as defined in this code; provided, that:

1.    The structure is erected more than 60 feet from the front lot line;

2.    The structure does not exceed one story or 15 feet in height;

3.    The structure does not exceed an area of 500 square feet; and

4.    The structure does not violate any existing utility easements.

C.    Attached accessory structures. When an accessory structure is attached to the main structure (wall to wall or by any permanent attachment), including via a covered walkway, such accessory structure shall be considered as part of the main structure. (Ord. 1604 § 38, 2011; Ord. 1742 § 1 (Exh. A), 2023)