• Written by Woodinville Weekly Staff

An alert reader sent us this Internet site detailing the upcoming requirements for carbon monoxide alarms: asp?pl=22&sl=75&contentid=75.

The site explains in part that “the Washington Building Code Council has finalized the Carbon Monoxide Alarm rules for Washington State. By January 1, 2013 all apartment units and all rental properties must have carbon monoxide alarms installed. This is different from Oregon law that specifies installing the carbon monoxide alarms only when a carbon monoxide source is present.


By January 1, 2013 CO alarms must be installed in existing apartments, condominiums, hotels, motels and single family residences.

Other timelines for CO alarms in Washington state:

By January 1, 2011, state law required CO alarms to be installed in any new single family homes and residences, including apartments, condominiums, hotels and motels.

Owner-occupied single family residences, legally occupied before July 26, 2009 are not required to have CO alarms until they are sold.

There are few exemptions and mostly apply to college dormitories, certain hotels/motels, and DSHS-licensed boarding home and residential treatment facilities so long as no carbon monoxide source is present.

Installation Requirements:

Alarms must be located outside of each separate sleeping area, in the immediate vicinity of the bedroom and on each level of the residence.

Single station carbon monoxide alarms must be listed as complying with UL 2034, and installed in accordance with the code and the manufacturer’s instructions.

Combined CO and smoke alarms are permitted.”

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