Addressing and Premise Identification

Addressing and premise identification are an integral part of an emergency response system, allowing responders to efficiently respond to all types of emergencies without delay. The following information details how properties and buildings are addressed and provides instructions for the installation of address and premise identification.


2014 Oregon Fire Code as amended by the City of Hillsboro HMC 11.28.010 §505.1, 505.2, and City of Hillsboro HMC 11.32.050.


Complex – Three or more buildings on a single parcel.
Complex Map – A visual representation of a complex in plan view denoting the location of buildings, building designations, access roadways, and other features required by the fire code official.  
Flag Lot – A lot so shaped that the buildable area (the “flag”) is not adjacent to the street or alley on which the lot fronts, and which includes a private access strip (the “pole”) connecting the buildable area to the street or alley.
Monument Sign – Permanently installed sign visible to the public that provides addressing and premise identification as required by the fire code official.

Address Designation/Assignment

Addresses are assigned by Hillsboro Planning Department.

General Requirements

All premises shall have approved address numbers, building numbers, unit/suite designations or other approved identification placed so as to be plainly legible from the street or road fronting the property.

  • Be made so as to contrast with its background.    
  • Be composed of Arabic numbers or alphabetical letters.
  • Be positioned at a minimum of 80 inches above grade.
  • Be internally or externally illuminated at night an intensity of not less than 5.0 foot-candles.




General  6 inches  1 inch
Greater than 50 feet from right-of-way  12 inches  2 inches
One- and two-family dwelling  4 inches  0.5 inch
Range of building address numbers  12 inches  2 inches
Suite   6 inches  1 inch

Monuments, Poles or Signs

If access is via private road and the building cannot be easily seen from the public right-of-way, a monument, pole or other sign shall be used to identify the structure.

Buildings with multiple addresses and suites shall provide a monument at the primary entrance with additional signage on each building indicating the address range of the building and the location of each suite.

ComplexesPremise Identification Sign

A premise map shall be installed at the primary vehicle entrance into the complex. The address of the complex and each building shall be noted on this map at a minimum.

Timing of Installation

Address numbers shall be installed prior to occupancy of any new or existing building.

Construction Sites

Address signage shall be provided at each entrance to the site. If there are multiple buildings being constructed, a temporary premise map showing the location and designation of each building shall also be provided. All signage shall be of an approved size, be weather resistant, and be maintained until replaced by permanent signage.