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Mechanical Permit — Lynnwood, Washington · Requirements sheet
Verified 2026-09-16 · Source: https://lynnwood.municipal.codes/LMC/15.08
PermitBase is an independent reference and is not affiliated with any government agency. Requirements change and vary by project — confirm current details with the building department before you submit.
Mechanical Permit in Lynnwood, Washington
Required for mechanical work in Lynnwood under LMC Chapter 15.08 — which sits inside Title 15, headed “Plumbing”.
Verified 2026-09-16 · Source
When you need this permit
- “the latest edition of the International Mechanical Code (IMC), as published by the International Code Council … are adopted by this reference” (LMC 15.08.010)
- THIS IS THE ONLY ADOPTION SECTION IN EITHER TITLE THAT CITES NO Chapter 51-xx WAC number — it names the State Building Code Council but not the chapter
- IRC Chapters 25 through 43 are not adopted, so residential mechanical work comes here too
- Mechanical permit fees are set by a fee ordinance of the city council (LMC 15.08.030)
Required documents
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Fee schedule
Permit fee
Lynnwood deletes the model code's own fee schedule in every code it adopts and replaces it with the same sentence. Show full citationHide
Lynnwood deletes the model code's own fee schedule in every code it adopts and replaces it with the same sentence. LMC 16.04.100 (IBC § 109.2): “Fees shall be set forth in a fee ordinance adopted, and from time to time amended, by the city council.” LMC 16.09.050 repeats it for the IRC, LMC 15.04.040 for the UPC, LMC 15.08.030 for the IMC and LMC 16.10.090 for electrical. NO DOLLAR AMOUNT APPEARS IN THE CODE and none is asserted here. NOTE THE INSTRUMENT: a fee ORDINANCE, which is a third distinct authority within this Washington set — Edmonds uses a council RESOLUTION and Puyallup an EXECUTIVE ORDER of the city manager. Ask the city for the current fee ordinance.Set by city council fee ordinance
Review timeline
Plan review
Not published — contact the department
Inspection process
Tips
- Look in the plumbing title. LMC Title 15 is headed “Plumbing” and contains exactly two chapters, 15.04 Uniform Plumbing Code and 15.08 International Mechanical Code — so the mechanical code is not where the title names would lead you, and Title 16's own footnote sends you there.
- The IMC adoption is the one place in Titles 15 and 16 that does not name a WAC chapter. Every sibling adoption cites one — 51-50, 51-51, 51-11R/11C, 51-56/51-57. For the IMC the code names the State Building Code Council and stops, so confirm the governing chapter with the building official rather than reading it out of LMC 15.08.010.
Frequently asked questions
Lynnwood requires a mechanical permit for: “the latest edition of the International Mechanical Code (IMC), as published by the International Code Council … are adopted by this reference” (LMC 15.08.010); THIS IS THE ONLY ADOPTION SECTION IN EITHER TITLE THAT CITES NO Chapter 51-xx WAC number — it names the State Building Code Council but not the chapter; IRC Chapters 25 through 43 are not adopted, so residential mechanical work comes here too; Mechanical permit fees are set by a fee ordinance of the city council (LMC 15.08.030). If your project isn't listed, confirm with City of Lynnwood at (425) 670-5000 before starting work.
In Lynnwood, the published Permit fee is: Set by city council fee ordinance. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.
Lynnwood does not publish a plan-review timeline for this permit. Contact City of Lynnwood at (425) 670-5000 for current turnaround.
You'll need: Mechanical Permit Application. See the required-documents checklist on this page for details on each.
Apply through City of Lynnwood at 19100 44th Ave W, Lynnwood, WA 98036. Phone: (425) 670-5000. Official information: https://www.lynnwoodwa.gov/.
Lynnwood, Washington has adopted: NO EDITION YEAR IS NAMED FOR ANY CODE, AND THE CITY USES THREE DIFFERENT PHRASINGS FOR IT. The IBC is “the latest edition”, the IRC “the latest adopted version”, and the NEC “the Washington State adopted National Electrical Code”. A delegated binding has no canonical wording, so it cannot be found by searching for a phrase.; IBC — LMC 16.04.010: “As amended by the provisions of this chapter and the State of Washington Building Code Council, under Chapter 51-50 WAC, the latest edition of the International Building Code, published by the International Code Council, together with Appendices E, G, and J, one copy of which, along with the State of Washington Building Code Council’s amendments, shall be on file in the office of the Lynnwood city clerk, are adopted by reference.”; IRC — LMC 16.09.010: “… the latest adopted version of the International Residential Code (IRC), published by the International Code Council, except Chapters 11 and 25 through 43 … is adopted by reference.” Chapter 11 (energy) and Chapters 25 through 43 (the plumbing, mechanical and electrical parts of the IRC) are excluded, which is why plumbing and mechanical sit in LMC Title 15 and electrical in LMC Chapter 16.10.; IECC — LMC 16.05.010: “As amended by this chapter and the State of Washington Building Code Council, under Chapters 51-11R and 51-11C WAC, the latest edition of the International Energy Conservation Code (IECC), as published by the International Code Council … is adopted by this reference.”; UPC — LMC 15.04.010: “… under Chapters 51-56 and 51-57 WAC, the latest edition of the Uniform Plumbing Code (UPC) less Chapters 12 and 15 published by the International Association of Plumbing and Mechanical Officials … are adopted by this reference; provided, that in the event of a conflict between the International Fire Code and the Uniform Plumbing Code, the International Fire Code shall govern.”; IMC — LMC 15.08.010: “As amended by this chapter and the State of Washington Building Code Council, the latest edition of the International Mechanical Code (IMC), as published by the International Code Council … are adopted by this reference.” NOTE THE ASYMMETRY: this is the ONLY adoption section in either title that does not cite a Chapter 51-xx WAC number. Every sibling names one.; NEC — LMC 16.10.050: “As amended by the provisions of this chapter, the Washington State adopted National Electrical Code (NEC) issued by the National Fire Protection Association including Annex A, B, and C is adopted by reference.”; STRUCTURE: the mechanical code lives in the PLUMBING title. LMC Title 15 is headed “PLUMBING” and contains exactly two chapters — 15.04 Uniform Plumbing Code and 15.08 International Mechanical Code. Title 16 (Building) carries the IBC, IRC, IECC, electrical, ISPSC, IPMC and flood provisions, and its own footnote directs: “for plumbing, see LMC Title 15”.; NOT OPENED FOR THIS ENTRY and therefore not asserted: LMC 16.24 (International Swimming Pool and Spa Code), 16.44 (International Property Maintenance Code), 16.46 (Flood Hazard Area Regulations), 16.08 (Regulation and Abatement of Unsafe and Unsanitary Structures), 16.20 (Building Moving), 16.14 (Underground Utilities), 16.40 (Temporary Sales/Leasing Office) and 16.50 (Appeals).. Local amendments apply — see the Lynnwood overview page for the full list.
In LMC Chapter 15.08, inside Title 15, which is headed “Plumbing”. Title 15 contains only two chapters — 15.04 (Uniform Plumbing Code) and 15.08 (International Mechanical Code) — and the Building title's own footnote directs readers there. LMC 15.08.010 adopts “the latest edition of the International Mechanical Code (IMC)” as amended by the State of Washington Building Code Council, with no edition year and, unusually, no WAC chapter number.
Sources & verification
Verified against official sources. Last reviewed 2026-09-16.
Codes & ordinances
Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Lynnwood building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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