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Mechanical Permit — Longview, Washington · Requirements sheet
Verified 2026-09-16 · Source: https://ecode360.com/48937991
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Mechanical Permit in Longview, Washington
Mechanical work in Longview is reviewed under the 2021 International Mechanical Code adopted through Chapter 51-52 WAC.
Verified 2026-09-16 · Source
When you need this permit
- “Chapter 51-52 WAC (2021 International Mechanical Code)” (LMC 16.02.010)
- IBC Section 101.4.2 as amended applies the IMC to “ventilating, heating, cooling, air-conditioning and refrigeration systems, incinerators and other energy-related systems”
- Free-standing WOOD STOVES have their own inspection fee under Section 109.2.1.2
- LMC 16.02.040 contains further additions and changes to Chapter 51-52 WAC and was NOT opened for this entry
Required documents
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Fee schedule
Mechanical permitLMC 16.02.020 adds Section 109.2.2: “The fee for each mechanical permit shall be as set forth in the Community and Economic Development Department Master Fee Schedule.”
Set in the master fee schedule
Wood stove inspectionLMC 16.02.020 adds Section 109.2.1.2: “The fees for inspection of free-standing wood stoves shall be as set forth in the Community and Economic Development Department Master Fee Schedule.” A separately itemised inspection most codes do not break out.
Set in the master fee schedule
Refund if withdrawn
LMC 16.02.020 Section 109.6: “Not more than 80 percent of the permit fee paid when no work has been done”, and the same cap on plan review fees where an application is withdrawn or cancelled “before… Show full citationHide
LMC 16.02.020 Section 109.6: “Not more than 80 percent of the permit fee paid when no work has been done”, and the same cap on plan review fees where an application is withdrawn or cancelled “before any plan review effort has been expended.” Written application required “not later than 180 days after the date of fee payment.”Up to 80% refunded if no work is done
Refund if charged in errorLMC 16.02.020 Section 109.6(1): “The full amount of any fee paid hereunder which was erroneously paid or collected.” Still subject to the 180-day written-application deadline.
100% refunded if charged in error
Review timeline
Plan review
Not published — contact the department
Inspection process
Tips
- Free-standing wood stoves are itemised separately here, with their own inspection fee line in the master schedule (Section 109.2.1.2). If you are installing one, ask for that line specifically rather than assuming it is folded into a general mechanical permit.
Frequently asked questions
Longview requires a mechanical permit for: “Chapter 51-52 WAC (2021 International Mechanical Code)” (LMC 16.02.010); IBC Section 101.4.2 as amended applies the IMC to “ventilating, heating, cooling, air-conditioning and refrigeration systems, incinerators and other energy-related systems”; Free-standing WOOD STOVES have their own inspection fee under Section 109.2.1.2; LMC 16.02.040 contains further additions and changes to Chapter 51-52 WAC and was NOT opened for this entry. If your project isn't listed, confirm with City of Longview – Community and Economic Development Department at (360) 442-5004 before starting work.
In Longview, the published Mechanical permit is: Set in the master fee schedule. Additional published fees: Wood stove inspection — Set in the master fee schedule; Refund if withdrawn — Up to 80% refunded if no work is done; Refund if charged in error — 100% refunded if charged in error. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.
Longview does not publish a plan-review timeline for this permit. Contact City of Longview – Community and Economic Development Department at (360) 442-5004 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 Longview – Community and Economic Development Department at 1525 Broadway, Longview, WA 98632. Phone: (360) 442-5004. Official information: https://www.mylongview.com/.
Longview, Washington has adopted: THE WAC IS NAMED FIRST AND THE MODEL CODE IS PARENTHETICAL — the inverse of every other city in this set, which names the code and then cites the WAC. LMC 16.02.010: “Chapters 51-11R and 51-11C WAC (2021 International Energy Conservation Code), Chapter 51-50 WAC (2021 International Building Code), including the Appendix Chapters E, as further amended by Chapter 51-50 WAC, I and J, Chapter 51-51 WAC (2021 International Residential Code), including the Appendix Chapters G and H, Chapter 51-52 WAC (2021 International Mechanical Code), and Chapter 51-56 WAC (2021 Uniform Plumbing Code and Uniform Plumbing Code Standards), together with amendments thereof and additions thereto, one copy of each of which is on file in the office of the city clerk of the city of Longview, shall be and are hereby adopted as the building code of the city of Longview…”; Editions are NAMED: 2021 for the IECC, IBC, IRC, IMC and UPC. IBC Appendix Chapters E, I and J are adopted; IRC Appendix Chapters G and H are adopted.; AN APPLICANT-ELECTED ALTERNATE PLUMBING CODE, which is unusual anywhere in this corpus. LMC 16.02.020 amends IBC Section 101.4.3 and adds: “Exception: When requested in writing by the permit applicant, on the permit application, the 2021 International Plumbing Code shall be considered an approved alternate for plumbing installations governed under the Uniform Plumbing Code. When approved Alternate plumbing codes are utilized, the entire plumbing installation shall be installed and governed under the provisions of the alternate code.” So the governing plumbing code is chosen by the applicant, in writing, at application.; ELECTRICAL IS BEING WITHDRAWN, AND THE CODE SHOWS THAT MID-FLIGHT. LMC 16.02.020 already deletes IBC “Section 101.4.8, Electrical”. Separately, LMC Chapter 16.24 ELECTRICAL CODE is still published in full — Article I Adoption By Reference (§ 16.24.010), Article II General Provisions (§§ 16.24.020–.120), Article III Authority (§§ 16.24.200–.220), Article IV Permits And Approvals (§§ 16.24.300–.390) and Article V Plan Review (§ 16.24.400) — while the publisher's New Laws panel on that same chapter lists “Ord. 3577 — Adopted 2026-04-09 — Buildings and Construction: Repeals Electrical Code — Affects Ch 16.24”. BOTH ARE RECORDED AND NEITHER IS SUPPRESSED: the codified text is live, the repeal is adopted and not yet codified.; Property maintenance runs through two documents at once: IBC Section 101.4.4 is amended so that “the International Property Maintenance Code and Longview Municipal Code Chapter 16.32 (Unfit Dwellings and Structures) shall apply to all structures and premises…”; NOT OPENED FOR THIS ENTRY: LMC 16.12 (Historic Preservation), 16.13 (Uniform Sign Code), 16.28 (Building Numbering), 16.30 (Property Maintenance Code), 16.32 (Unfit Dwellings), 16.36 (Mobile Homes), 16.38 (Manufactured Homes), 16.40 (Advertising Structures), 16.46 (Hedges), 16.48 (Fences), 16.56 (Condominium Conversions), 16.60 (Property Tax Incentives), 16.75 (Wireless), 16.80 (Eligible Facilities Modifications), the body of 16.24, LMC Title 18 (Fire Prevention) and LMC Chapter 19.12 (Appeal Board of Adjustment).; ELEVEN CHAPTERS OF TITLE 16 ARE NAMED “REPEALED” IN THE CONTENTS — 16.01, 16.03, 16.04, 16.05, 16.06, 16.07, 16.14, 16.23, 16.44, 16.53 and 16.54 — which is readable without opening them, the same rendering Lynnwood uses and the opposite of Puyallup's and Lake Stevens'.. Local amendments apply — see the Longview overview page for the full list.
The 2021 International Mechanical Code, adopted at LMC 16.02.010 as “Chapter 51-52 WAC (2021 International Mechanical Code)”. LMC 16.02.020 amends IBC Section 101.4.2 so that the IMC “as amended by WAC 51-52 as adopted herein shall apply to the installation, alteration, repairs and replacement of mechanical systems, including equipment, appliances, fixtures, fittings and/or appurtenances including ventilating, heating, cooling, air-conditioning and refrigeration systems, incinerators and other energy-related systems.”
Sources & verification
Verified against official sources. Last reviewed 2026-09-16.
Codes & ordinances
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