18.35.040 Development standards

18.35.040 Development standards.

Hereafter, no use shall be conducted and no building, structure and appurtenance shall be erected, relocated, remodeled, reconstructed, altered or enlarged unless in compliance with the requirements in Table 18.35.040 (RO, RO-H, P-1, I, OS Zone Development Standards) and in compliance with the provisions of this title, and then only after securing all permits and approvals required hereby. These standards may be modified through either an administrative variance or variance, subject to the procedures of Chapter 18.70 ACC.

Table 18.35.040. RO, RO-H, P-1, I, OS Zone Development Standards
Development Feature	Requirement by Zones
Development Feature	RO Residential Office	RO-H Residential Office-Hospital	P-1 Public Use	I Institutional	OS Open Space
Minimum lot area	7,200 sf	None	None	6,000 sf	None
Minimum lot width, depth	50 ft, 80 ft	None	None	60 ft, 80 ft	None
Maximum lot coverage	55 percent¹	None	None	35 percent	5 percent
Maximum impervious area	NA	NA	NA	NA	20 percent⁷
Setbacks	Minimum setbacks required for primary structures. See ACC 18.31.070 for exceptions to these requirements.
Front	20 ft²	10 ft	20 ft	20 ft	20 ft
Side – Interior	5 ft	None	5 ft⁴	5 ft	5 ft
Side – Corner	10 ft	10 ft	10 ft	10 ft	10 ft
Rear	25 ft³	None	25 ft	25 ft	25 ft
Accessory structure(s)	See note ⁵ below	NA	NA	See note ⁵ below
Height limit	Maximum allowable height of structures. See ACC 18.31.030 (Height limitations – Exceptions) for height limit exceptions.
Maximum height	35 ft	65 ft	45 ft	45 ft⁶	35 ft
Fences and hedges	See Chapter 18.31 ACC
Landscaping	See Chapter 18.50 ACC
Parking	See Chapter 18.52 ACC
Signs	See Chapter 18.56 ACC
Lighting	See Chapter 18.55 ACC
Nonconforming structures, land and uses	See Chapter 18.54 ACC

1New single-family residential or conversions of single-family residences to commercial uses with additions greater than a total or cumulative area of 200 square feet on the property since the adoption of Ordinance No. 6231, then the maximum lot coverage is 35 percent.

2New single-family residential or conversions of single-family residences to commercial uses with additions of 200 square feet or less, then the front yard setback is 10 feet.

3New single-family residential or conversions of single-family residences to commercial uses with additions of 200 square feet or less, then the rear yard setback is 15 feet.

4A 25-foot setback is required when adjacent to a residential zone.

5Accessory structures shall meet all the required setbacks of the zone with the exception that the rear yard setback may be reduced to five feet; provided, that any structure with a vehicle entrance from a street (public or private) or public alley shall be set back a minimum of 20 feet.

6Maximum building height for residential dwellings: 30 feet. Accessory buildings to residential dwellings: 16 feet.

7Maximum impervious area includes all hard surfaces per ACC 13.48.010(L).

(Ord. 6894 § 1 (Exh. B), 2022; Ord. 6677 § 4, 2018; Ord. 6434 § 1, 2012.)