Updated : 04/22/2024

Overview

Mountlake Terrace, Washington, adopted the 2018 International Residential Code (IRC), including Appendices G, J, R, and S, with amendments. Mountlake Terrace, WA, Muni. Code § 15.05.060 (adoption) and § 15.05.070 (amendments). Mountlake Terrace, Washington, adopted the 2018 International Building Code (IBC), including Appendices F, G, H, and J, with amendments. Mountlake Terrace, WA, Muni. Code § 15.05.040 (adoption) and § 15.05.050 (amendments). Mountlake Terrace, Washington, adopted the 2018 International Existing Building Code (IEBC). Mountlake Terrace, WA, Muni. Code § 15.05.155 (adoption and amendments). Note that Washington adopted the 2015 IEBC, by amending the reference to the IEBC in Section 101.4.7 of the 2018 IBC; however, Section 101.4.7 was reamended by the city to adopt the 2018 edition. Mountlake Terrace, WA, Muni. Code § 15.05.155, § 15.05.050(A), Wash. Admin. Code § 51-50-007, and § 51-50-480000 (state codes). 

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. 

Helpful resources for Mountlake Terrace, Washington include the following.

• Jurisdiction's Information Page(s):
  • Mountlake Terrace, Washington Municipal Code
• 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.

Mountlake Terrace 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 Mountlake Terrace, WA Municipal Code)

...Adoption not found...

Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for Mountlake Terrace ? No
Comments:

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

Climate and Geographical Design Criteria for Mountlake Terrace: 

Ground Snow Load: 25 ibs/sq ft

Wind Speed: 85 mph

Seismic Design Category: D2

Weathering: Moderate

Frost Line Depth: 12"

Termite: Slight

Decay: Moderate

Winter Design Temperature: 27º F

Ice Shield Underlayment Required: No

Flood Hazards: Current version of flood hazard map 

Mountlake Terrace, WA, Muni. Code § 15.05.070 (amendments). 

Comments

Mountlake Terrace, Washington, adopted the 2018 International Residential Code (IRC), including Appendices G, J, R, and S, with amendments. Mountlake Terrace, WA, Muni. Code § 15.05.060 (adoption) and § 15.05.070 (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.

Mountlake, Washington, adopted Appendix J. Mountlake Terrace, WA, Muni. Code § 15.05.060 (adoption) and § 15.05.070 (amendments).

Mountlake Terrace, Washington, adopted the 2018 International Existing Building Code (IEBC). Mountlake Terrace, WA, Muni. Code § 15.05.155 (adoption and amendments). Note that Washington adopted the 2015 IEBC, by amending the reference to the IEBC in Section 101.4.7 of the 2018 IBC; however, Section 101.4.7 was reamended by the city to adopt the 2018 edition. Mountlake Terrace, WA, Muni. Code § 15.05.155, § 15.05.050(A), Wash. Admin. Code § 51-50-007, and § 51-50-480000 (state codes). 

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

Mountlake Terrace 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 Mountlake Terrace, WA Municipal Code)

...Adoption not found...

Comments

Mountlake Terrace, Washington, adopted the 2018 International Building Code (IBC), including Appendices F, G, H, and J, with amendments. Mountlake Terrace, WA, Muni. Code § 15.05.040 (adoption) and § 15.05.050 (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

Mountlake Terrace, Washington, adopted the 2018 International Existing Building Code (IEBC). Mountlake Terrace, WA, Muni. Code § 15.05.155 (adoption and amendments). Note that Washington adopted the 2015 IEBC, by amending the reference to the IEBC in Section 101.4.7 of the 2018 IBC; however, Section 101.4.7 was reamended by the city to adopt the 2018 edition. Mountlake Terrace, WA, Muni. Code § 15.05.155, § 15.05.050(A), Wash. Admin. Code § 51-50-007, and § 51-50-480000 (state codes). 

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. 

Other Building Codes