Lakewood, WA Building Safety: Fire Sprinkler Requirements (2026)
Key Facts
- New townhouses
- Sprinkler system required, IRC Appendix V/U
- New buildings
- Sprinklers required over 5,000 sq ft fire area
- Major improvement threshold
- >50% of assessed value within 72 months
- Furniture/mattress retail
- Sprinklers required over 2,500 sq ft
- Underground supply piping
- Needs its own construction permit
- Unpermitted sprinkler work
- Double fees under amended IFC Sec. 106.3
Summary
Lakewood's amended residential code requires an automatic fire sprinkler system in every new townhouse, and its amended commercial building code requires sprinklers in any newly built structure, or any existing building undergoing a major improvement, once the fire area tops 5,000 square feet.
Major improvement. ... Means all improvements to a structure (excluding normal maintenance and repair and life/safety improvements) which within a 72-month period exceeds a cumulative value of 50 percent of the current county assessed value of the structure. The value of improvements shall be as determined by the building official. ... ... R. Section 903.2, Where required, is amended to read as follows:Approved automatic sprinkler systems shall be provided in all newly constructed buildings where the gross area including basements exceeds 5,000 square feet in fire area. Approved automatic sprinkler systems shall be provided in existing buildings undergoing a Major Improvement, where the area exceeds 5,000 square feet in fire area. ... ... B. Appendix V is amended as follows:An approved automatic fire sprinkler system shall be installed in new townhouses in accordance with Appendix U per state amendment.
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 852, passed June 15, 2026).
Full Breakdown
070(B) amends International Residential Code Appendix V to require that 'an approved automatic fire sprinkler system shall be installed in new townhouses in accordance with Appendix U per state amendment,' so any new townhouse built in Lakewood needs a sprinkler system regardless of size. 2 so that approved automatic sprinkler systems are required in all newly constructed buildings where the gross area, including basements, exceeds 5,000 square feet of fire area, and in existing buildings undergoing a 'Major Improvement' where the area exceeds that same 5,000-square-foot threshold.
060(P) defines a Major Improvement as any set of improvements to a structure, other than normal maintenance, repair or life/safety work, that cumulatively exceed 50 percent of the current county-assessed value of the structure within a 72-month period, with the Building Official determining the value of the improvements. 060(II) requires a sprinkler system on residential additions that add more than 50 percent of a structure's original square footage if the addition cannot meet the required fire flow or hydrant-distance standards.
Violations & Fines
Sprinkler systems are installed and inspected through the fire code permitting process; the underground supply piping for a sprinkler system needs its own construction permit under amended IFC Section 105.6.25 (LMC 15.05.080(F)), and starting that work before the permit issues doubles the fees under amended Section 106.3 (LMC 15.05.080(I)). Failing to install a required sprinkler system is a violation of the Lakewood Building Code, punishable as a misdemeanor under LMC 15.05.060(M): up to 90 days in jail, a fine of up to $1,000, or both.
Frequently Asked Questions
Does Lakewood require sprinklers in new townhouses?
At what size does a new building need a fire sprinkler system in Lakewood?
What counts as a 'Major Improvement' that can trigger a sprinkler requirement?
Sources & Official References
Other rules in Lakewood
Compare Lakewood to another location·View the Washington building safety overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.
Fire Sprinkler Requirements in Nearby Cities
How other cities in this county handle fire sprinkler requirements.