The purpose of this subchapter is to classify streets in accordance with designations of the Comprehensive Plan and to ensure the naming of new streets and assignment of new addresses occur in an orderly manner.
(Ord. 591 § 2 (Exh. B), 2010)
Streets shall be designed and located to conform to the adopted plans. Where not part of an adopted plan, new streets shall be designed to provide for the appropriate continuation of existing streets.
The Public Works Department shall maintain a list of public streets maintained by the City.
(Ord. 591 § 2 (Exh. B), 2010)
Local access streets may be private, subject to the approval of the City. If the conditions for approval of a private street cannot be met then a public street will be required. Private streets may be allowed when all of the following conditions are present:
A. 
The private street is located within a tract or easement; and
B. 
A covenant, tract, or easement which provides for maintenance and repair of the private street by property owners has been approved by the City and recorded with King County; and
C. 
The covenant or easement includes a condition that the private street will remain open at all times for emergency and public service vehicles; and
D. 
The private street would not hinder public street circulation; and
E. 
The proposed private street would be adequate for transportation and fire access needs; and
F. 
At least one of the following conditions exists:
1. 
The street would ultimately serve four or fewer single-family lots; or
2. 
The private street would ultimately serve more than four lots, and the Director determines that no other access is available; or
3. 
The private street would serve developments where no circulation continuity is necessary.
(Ord. 591 § 2 (Exh. B), 2010)
The purpose of this section is to establish standards for designating street names and numbers, and for addressing the principal entrances of all buildings or other developments.
A. 
All streets shall be named or numbered in the following manner:
1. 
Public or private street names and/or numbers shall be consistent with the established grid system as determined by the Department. Named streets can only be assigned when the numbered grid is determined infeasible by the Department. The Department may change the existing public or private street name if it is determined to be inconsistent with the surrounding street naming system.
2. 
All streets shall carry a geographic suffix or prefix. Streets designated as “Avenues” shall carry a geographic suffix and be in a north-south direction, and streets designated as “Streets” shall carry a geographic prefix and be in an east-west direction. Diagonal streets are treated as being either north-south or east-west streets. Names such as lane, place, way, court, and drive may be used on streets running either direction.
3. 
Only entire street lengths or distinct major portions of street shall be separately designated.
4. 
In determining the designation, the Department shall consider consistency with the provisions of this section and emergency services responsiveness including Emergency-911 services.
B. 
Building addresses shall be assigned as follows:
1. 
New Buildings. The assignment of addresses for new buildings shall occur in conjunction with the issuance of a building permit.
2. 
New Lots. The assignment of addresses for new lots created by subdividing shall occur during project review and be included in the recording documents.
3. 
Previously Unassigned Lots. Lots with no address of record shall be assigned an address and the property owner shall be notified of the address.
4. 
The assignment of addresses shall be based on the following criteria:
a. 
Even numbers shall be used on the northerly side of streets named as east-west and on the easterly side of streets named as north-south.
b. 
Odd numbers shall be used on the southerly side of streets named as east-west and on the westerly side of streets named as north-south. Addresses shall be assigned whole numbers only.
c. 
In determining the address assignment, the Department shall consider the consistency with the provisions of this section, consistency with the addressing needs of the area, and emergency services.
C. 
All buildings must display addresses as follows:
1. 
The owner, occupant, or renter of any addressed building or other structure shall maintain the address numbers in a conspicuous place over or near the principal entrance or entrances. If said entrance(s) cannot be easily seen from the nearest adjoining street, the address numbers shall be placed in such other conspicuous place on said building or structure as is necessary for visually locating such address numbers from the nearest adjoining street.
2. 
If the addressed building or structure cannot be easily seen or is greater than 50 feet from the nearest adjoining street, the address numbers shall be placed on a portion of the site that is clearly visible and no greater than 20 feet from the street.
3. 
The address number figures shall comply with currently adopted building and fire codes.
(Ord. 591 § 2 (Exh. B), 2010; Ord. 631 § 1 (Exh. 1), 2012)