Updated : 04/22/2024

Overview

Lynnwood, Washington, adopted the 2018 International Residential Code with amendments. Lynnwood, WA, Muni. Code §16.09.10 (adoption), §16.09.50, §16.09.70, and §16.09.100 (amendments). Note that the 2018 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRB, Washington Building Codes. Lynnwood, Washington, adopted the 2018 International Building Code, including Appendices E, G, and J, with amendments. Lynnwood, WA, Muni. Code §16.04.010 (adoption), §16.04.035, and §16.04.100 (amendments). Note that the 2018 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRB, Washington Building Codes. Lynnwood, Washington, adopted the 2015 International Existing Building Code. See PLRB, Washington Building Codes, and Lynnwood, WA, “Adopted Codes.” City of Lynnwood Design Guidelines & Plans. Accessed October 16, 2023. https://www.lynnwoodwa.gov/Services/Apply-for-a-Permit/Adopted-Codes-City-Design-Guidelines-Plans. Note that no local adoption could be found in the municipal code and the "adopted code" section of the city website shows the 2018 Washington Existing Building Code; however, Washington adopted the 2015 edition of the IEBC by amending section 101.4.7 of the 2018 IBC as a statewide code. 

Also, note that the 2015 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRB, Washington Building Codes.

Helpful resources for Lynnwood, Washington include the following.

• PLRB, Ordinance and Law Coverage Discussion for Washington

Residential Building Code

Washington adopted a statewide mandatory residential code that will control; however, local governments are free to make laws more strict (with some limitations).See PLRB, Washington Building Codes for more information on state level codes.

Lynnwood adopted the 2018 IRC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.

You can find a copy of the model code here.

You can find information about amendments to the model code here.

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2018 Washington State Residential Code (2018 IRC)(City of Lynnwood, WA Municipal Code)

...Adoption not found...

Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for Lynnwood ? No
Comments:

The adoption of the residential code included an amendment stating that ice barrier underlayment is not required at the eaves.

Table R301.2(1). Climatic and Geographic Design Criteria

GROUND SNOW LOAD		25
WIND DESIGN	Speedd (mph)	110
	Topographic effectsk	NO
	Special wind regionl	NO
	Wind-borne debris zonem	NO
SEISMIC DESIGN CATEGORYf		D2
SUBJECT TO DAMAGE FROM	Weatheringa	MODERATE
	Frost line depthb	18"
	Termitec	SLIGHT
WINTER DESIGN TEMPe		22
ICE BARRIER UNDERLAYMENT REQUIREDh		NO
FLOOD HAZARDg		1985; 2005; 53061C1305E 53061C1310E 53061C1309E 53061C1320E 53061C1315E All adopted 11/08/1999
AIR FREEZING INDEXi		1500
MEAN ANNUAL TEMPj		52.8

Lynnwood, WA, Muni. Code §16.09.100.

 

Comments

Lynnwood, Washington, adopted the 2018 International Residential Code with amendments. Lynnwood, WA, Muni. Code §16.09.10 (adoption), §16.09.50, §16.09.70, and §16.09.100 (amendments). Note that the 2018 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRB, Washington Building Codes.

Existing Buildings

Existing buildings, meaning buildings that were built in accordance to code at the time of construction, typically merit extra consideration in a current updated code.

No adoption of Appendix J was found in the municipal code. 

Lynnwood, Washington, adopted the 2015 International Existing Building Code. See PLRB, Washington Building Codes, and Lynnwood, WA, “Adopted Codes.” City of Lynnwood Design Guidelines & Plans. Accessed October 16, 2023. https://www.lynnwoodwa.gov/Services/Apply-for-a-Permit/Adopted-Codes-City-Design-Guidelines-Plans. Note that no local adoption could be found in the municipal code and the "adopted code" section of the city website shows the 2018 Washington Existing Building Code; however, Washington adopted the 2015 edition of the IEBC by amending section 101.4.7 of the 2018 IBC as a statewide code. 

Also, note that the 2018 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRB, Washington Building Codes.

Commercial Building Code

Lynnwood adopted the 2018 IBC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.

You can find a copy of the code here.You can find information about amendments to the model code here.

Auto Search - beta:

2018 Washington State Building Code (2018 IBC)(City of Lynnwood, WA Municipal Code)

...Adoption not found...

Comments

Lynnwood, Washington, adopted the 2018 International Building Code, including Appendices E, G, and J, with amendments. Lynnwood, WA, Muni. Code §16.04.010 (adoption), §16.04.035, and §16.04.100 (amendments). Note that the 2018 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRB, Washington Building Codes.

Existing Buildings

Lynnwood, Washington, adopted the 2015 International Existing Building Code. See PLRB, Washington Building Codes, and Lynnwood, WA, “Adopted Codes.” City of Lynnwood Design Guidelines & Plans. Accessed October 16, 2023. https://www.lynnwoodwa.gov/Services/Apply-for-a-Permit/Adopted-Codes-City-Design-Guidelines-Plans. Note that no local adoption could be found in the municipal code and the "adopted code" section of the city website shows the 2018 Washington Existing Building Code; however, Washington adopted the 2015 edition of the IEBC by amending section 101.4.7 of the 2018 IBC as a statewide code. 

Also, note that the 2015 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRB, Washington Building Codes.

Other Building Codes