DEVELOPMENT CODE
All zoning and land use codes are published at Municode.com (there is an unauthorized code published at a different website, make sure you are viewing code only at Municode.com) 
Municode.com - Chapter 14 of the Unified Development Regulations.
Common Areas of Interest:
DEFINITIONS
ENVIRONMENTAL REVIEW (SEPA)
ZONING CLASSIFICATIONS
ZONING MAP      MAP TIPS
TABLE OF PERMITTED USES
SPECIAL USE PERMIT 
DEVELOPMENT STANDARDS
NOISE CONTROL
SETBACKS HEIGHT DENSITY
LANDSCAPING - FENCES - VISIBILITY STANDARDS
CLEARING AND GRADING
STORMWATER
PARKING AND LOADING
LIGHTING
SIGNS
OUTDOOR STORAGE - RV'S & TRAILERS
HOME BUSINESSES
VACATION RENTALS
ACCESSORY BUILDINGS & DWELLING UNITS
RV'S, CAMPERS, TRAILERS, TINY HOUSES
DOWNTOWN MIXED-USE DISTRICT STANDARDS
COLLEGE AVENUE DESIGN GUIDELINES
CRITICAL AREA PROTECTIONS
SUBDIVISIONS
HOUSING STANDARDS - MULTI FAMILY - COTTAGE HOUSING
HISTORIC PRESERVATION
BUILDING AND CONSTRUCTION