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Fuel gas permit — Mercer Island, Washington · Requirements sheet
Verified 2026-09-16 · Source: https://library.municode.com/wa/mercer_island/codes/city_code?nodeId=CICOOR_TIT17COCO
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Fuel gas permit in Mercer Island, Washington
Permit for fuel gas and liquefied petroleum gas work on Mercer Island, under three separate chapters at MICC 17.04, 17.05 and 17.06.
Verified 2026-09-16 · Source
When you need this permit
- >>> MERCER ISLAND GIVES EACH GAS CODE ITS OWN CHAPTER AND THE TWO NFPA STANDARDS CARRY DIFFERENT YEARS. MICC 17.04.010: “The 2021 Edition of the National Fuel Gas Code (ANSI Z223.1/NFPA 54), as adopted by the State Building Code Council in WAC Chapter 51-52, as published by NFPA”. MICC 17.05.010: “The 2020 Edition of the Liquefied Petroleum Gas Code (NFPA 58), as adopted by the State Building Code Council in WAC Chapter 51-52”. Adjacent chapters, one year apart. THIS IS THE SECOND CITY TO SHOW THAT SPLIT AND IT CONFIRMS A FALSIFICATION RATHER THAN A PATTERN. An earlier hypothesis in this project held that edition years sort by PUBLISHER — ICC documents on one vintage, NFPA documents on another — because Walla Walla and Maple Valley both put their NFPA standards at 2020 against ICC at 2021. Tumwater killed it by naming NFPA 54 at 2021 and NFPA 58 at 2020 in one sentence, and Mercer Island reproduces the same divergence in separate chapters. NFPA DOCUMENTS DO NOT MOVE AS A BLOCK. NFPA 58 now stands at seven cities in this set, six naming 2020 and University Place naming 2021. NFPA 54 stands at three, Walla Walla at 2020 against Tumwater and Mercer Island at 2021. A MAJORITY IS NOT AN ADJUDICATION in either case.
- >>> THE ATTRIBUTION THESE CITIES MAKE CANNOT BE CHECKED AT THE FREE STATE SOURCE, AND THE REASON IS STRUCTURAL RATHER THAN AN OVERSIGHT. Mercer Island and Maple Valley both attribute NFPA 58's 2020 edition to the State Building Code Council's adoption in WAC Chapter 51-52. Read at app.leg.wa.gov on 2026-09-16: WAC 51-52-003 adopts only “The 2021 edition of the International Mechanical Code” and contains no NFPA reference, and WAC 51-52-1500, the chapter's referenced-standards section, opens “The following referenced standards are ADDED to Chapter 15” and lists AHAM, ANCE, ASHRAE, ASTM and UL/CSA entries — no NFPA 54 or NFPA 58. THE WAC AMENDS THE MODEL CODE'S REFERENCED-STANDARDS TABLE RATHER THAN RESTATING IT, so the edition a city is pointing at lives in the 2021 IMC's own Chapter 15, which is ICC copyrighted text the WAC does not reproduce. The cities' 2020 is therefore NEITHER CONFIRMED NOR REFUTED here, and it is not confirmable from this source at all. Recorded so the next reader does not repeat the lookup.
- MICC 17.06 adopts the International Fuel Gas Code in its own chapter; that chapter's adopting sentence was not opened and no edition year is asserted for the IFGC here.
- MERCER ISLAND REPRODUCES A WHOLE CONSTRUCTION ADMINISTRATIVE CODE INLINE RATHER THAN AMENDING THE MODEL CODES' ADMINISTRATIVE CHAPTERS. MICC Chapter 17.14 has just two sections — 17.14.010 Adoption and 17.14.020 Appeals — and the adoption section carries the full administrative code beginning “SECTION 101 GENERAL 101.1 Title. These regulations shall be known as the Construction Administrative Code of the city of Mercer Island”. Permit expiry, application limits, fees, plan review and consultant reimbursement all live there rather than in the individual code chapters.
- >>> A FLAT TWO-YEAR PERMIT LIFE WITH NO COMMENCE TRIGGER AND NO ABANDONMENT TRIGGER, WHICH IS STRUCTURALLY UNLIKE EVERY OTHER CITY IN THIS SET. Construction Administrative Code Section 105.5 as adopted: “Every permit issued shall expire two years from the date of issuance.” Most cities here void a permit if work does not start within 180 days or is abandoned for 180 days; Tumwater adds a third trigger on approved inspections; SeaTac keys the life to what is being built. Mercer Island publishes ONE clock and it runs from issuance regardless of what happens on site. TWO EXTENSIONS EXIST AND ONE OF THEM IS UNIQUE HERE. For nonresidential or mixed-use construction the building official “may approve a request for an extended expiration date where a construction schedule is provided by the applicant and approved PRIOR TO PERMIT ISSUANCE” — so that extension has to be arranged before the permit exists, not when it is running out. And “During or after a declared emergency covered under RCW Chapter 38.52, the building official may authorize one 6-month” extension. No other city in this set publishes an emergency-linked extension.
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Fee schedule
Permit fee
A TWO-STEP INSTRUMENT, WHICH IS NEW IN THIS WASHINGTON SET. Show full citationHide
A TWO-STEP INSTRUMENT, WHICH IS NEW IN THIS WASHINGTON SET. Construction Administrative Code Section 109.2, adopted at MICC 17.14.010: a fee is paid “in accordance with a schedule of fees to be recommended by the building and/or code official and approved by city council by resolution.” The official proposes and the council adopts, where most cities here simply say “by resolution”. Section 109.1 gates validity on payment: “A permit shall not be valid until applicable development and construction permit fees established by City Council by resolution have been paid, nor shall an amendment to a permit be released until any additional fee required, if any, has been paid.” NO DOLLAR AMOUNT APPEARS IN THE CODE and the resolution is a separate document. Plan review fees are due at submittal under Section 109.3, not at issuance.Set by city council resolution
Outside consultant reimbursement
AN OPEN-ENDED COST THE CODE DOES NOT CAP, AND IT IS NOT A FEE. Show full citationHide
AN OPEN-ENDED COST THE CODE DOES NOT CAP, AND IT IS NOT A FEE. Construction Administrative Code Section 107.3.1 as adopted: where an application “requires retention by the jurisdiction for professional consulting services, the applicant shall reimburse to the jurisdiction the cost of such professional consulting services. This fee shall be in addition to the normal plan review and building permit fees. The jurisdiction may require the applicant to deposit an amount with the jurisdiction estimated in the discretion of the building official to be sufficient to cover anticipated costs.” The deposit is security against an actual-cost reimbursement, so the code publishes neither an amount nor a ceiling — only who estimates it.Actual cost; deposit may be required
Review timeline
Plan review
Not published — contact the department
Inspection process
Tips
- THE TWO NFPA STANDARDS CARRY DIFFERENT YEARS IN ADJACENT CHAPTERS — NFPA 54 at 2021 (MICC 17.04.010) and NFPA 58 at 2020 (MICC 17.05.010). Check each standard's year separately rather than assuming they move together.
- WASHINGTON CITIES DISAGREE ABOUT BOTH. Six cities in this set name NFPA 58 at 2020 and one names 2021; for NFPA 54 the split is two at 2021 against one at 2020. Confirm the operative edition with the building official rather than carrying a year from a neighbouring city.
Frequently asked questions
Mercer Island requires a fuel gas permit for: >>> MERCER ISLAND GIVES EACH GAS CODE ITS OWN CHAPTER AND THE TWO NFPA STANDARDS CARRY DIFFERENT YEARS. MICC 17.04.010: “The 2021 Edition of the National Fuel Gas Code (ANSI Z223.1/NFPA 54), as adopted by the State Building Code Council in WAC Chapter 51-52, as published by NFPA”. MICC 17.05.010: “The 2020 Edition of the Liquefied Petroleum Gas Code (NFPA 58), as adopted by the State Building Code Council in WAC Chapter 51-52”. Adjacent chapters, one year apart. THIS IS THE SECOND CITY TO SHOW THAT SPLIT AND IT CONFIRMS A FALSIFICATION RATHER THAN A PATTERN. An earlier hypothesis in this project held that edition years sort by PUBLISHER — ICC documents on one vintage, NFPA documents on another — because Walla Walla and Maple Valley both put their NFPA standards at 2020 against ICC at 2021. Tumwater killed it by naming NFPA 54 at 2021 and NFPA 58 at 2020 in one sentence, and Mercer Island reproduces the same divergence in separate chapters. NFPA DOCUMENTS DO NOT MOVE AS A BLOCK. NFPA 58 now stands at seven cities in this set, six naming 2020 and University Place naming 2021. NFPA 54 stands at three, Walla Walla at 2020 against Tumwater and Mercer Island at 2021. A MAJORITY IS NOT AN ADJUDICATION in either case.; >>> THE ATTRIBUTION THESE CITIES MAKE CANNOT BE CHECKED AT THE FREE STATE SOURCE, AND THE REASON IS STRUCTURAL RATHER THAN AN OVERSIGHT. Mercer Island and Maple Valley both attribute NFPA 58's 2020 edition to the State Building Code Council's adoption in WAC Chapter 51-52. Read at app.leg.wa.gov on 2026-09-16: WAC 51-52-003 adopts only “The 2021 edition of the International Mechanical Code” and contains no NFPA reference, and WAC 51-52-1500, the chapter's referenced-standards section, opens “The following referenced standards are ADDED to Chapter 15” and lists AHAM, ANCE, ASHRAE, ASTM and UL/CSA entries — no NFPA 54 or NFPA 58. THE WAC AMENDS THE MODEL CODE'S REFERENCED-STANDARDS TABLE RATHER THAN RESTATING IT, so the edition a city is pointing at lives in the 2021 IMC's own Chapter 15, which is ICC copyrighted text the WAC does not reproduce. The cities' 2020 is therefore NEITHER CONFIRMED NOR REFUTED here, and it is not confirmable from this source at all. Recorded so the next reader does not repeat the lookup.; MICC 17.06 adopts the International Fuel Gas Code in its own chapter; that chapter's adopting sentence was not opened and no edition year is asserted for the IFGC here.; MERCER ISLAND REPRODUCES A WHOLE CONSTRUCTION ADMINISTRATIVE CODE INLINE RATHER THAN AMENDING THE MODEL CODES' ADMINISTRATIVE CHAPTERS. MICC Chapter 17.14 has just two sections — 17.14.010 Adoption and 17.14.020 Appeals — and the adoption section carries the full administrative code beginning “SECTION 101 GENERAL 101.1 Title. These regulations shall be known as the Construction Administrative Code of the city of Mercer Island”. Permit expiry, application limits, fees, plan review and consultant reimbursement all live there rather than in the individual code chapters.; >>> A FLAT TWO-YEAR PERMIT LIFE WITH NO COMMENCE TRIGGER AND NO ABANDONMENT TRIGGER, WHICH IS STRUCTURALLY UNLIKE EVERY OTHER CITY IN THIS SET. Construction Administrative Code Section 105.5 as adopted: “Every permit issued shall expire two years from the date of issuance.” Most cities here void a permit if work does not start within 180 days or is abandoned for 180 days; Tumwater adds a third trigger on approved inspections; SeaTac keys the life to what is being built. Mercer Island publishes ONE clock and it runs from issuance regardless of what happens on site. TWO EXTENSIONS EXIST AND ONE OF THEM IS UNIQUE HERE. For nonresidential or mixed-use construction the building official “may approve a request for an extended expiration date where a construction schedule is provided by the applicant and approved PRIOR TO PERMIT ISSUANCE” — so that extension has to be arranged before the permit exists, not when it is running out. And “During or after a declared emergency covered under RCW Chapter 38.52, the building official may authorize one 6-month” extension. No other city in this set publishes an emergency-linked extension.. If your project isn't listed, confirm with City of Mercer Island at (206) 275-7600 before starting work.
In Mercer Island, the published Permit fee is: Set by city council resolution. Additional published fees: Outside consultant reimbursement — Actual cost; deposit may be required. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.
Mercer Island does not publish a plan-review timeline for this permit. Contact City of Mercer Island at (206) 275-7600 for current turnaround.
You'll need: Building permit application. See the required-documents checklist on this page for details on each.
Apply through City of Mercer Island at 9611 SE 36th St, Mercer Island, WA 98040. Phone: (206) 275-7600. Official information: https://www.mercerisland.gov/.
Mercer Island, Washington has adopted: IBC — MICC 17.01.010: “The 2021 Edition of the International Building Code (IBC), including the adoption of ICC/ANSI A117.1-2017, Requirements for Accessible and Useable Buildings and Facilities”.; IRC — MICC 17.02.010: “The 2021 Edition of the International Residential Code (IRC), as adopted and amended by the State Building Code Council in WAC Chapter 51-51, as published by the International Code Council”.; NFPA 54 — MICC 17.04.010: “The 2021 Edition of the National Fuel Gas Code (ANSI Z223.1/NFPA 54), as adopted by the State Building Code Council in WAC Chapter 51-52, as published by NFPA”.; NFPA 58 — MICC 17.05.010: “The 2020 Edition of the Liquefied Petroleum Gas Code (NFPA 58), as adopted by the State Building Code Council in WAC Chapter 51-52”.; WCEC — MICC 17.13.020: “The 2023 Edition of the Washington Cities Electrical Code (WCEC) Part 1 and Part 3, excluding Part 2, Administration, is adopted by reference, together with the following amendments, additions and exceptions.”; Construction Administrative Code — MICC 17.14.010 adopts it inline, opening “SECTION 101 GENERAL 101.1 Title. These regulations shall be known as the Construction Administrative Code of the city of Mercer Island”.; ADOPTED IN THEIR OWN CHAPTERS BUT NOT OPENED FOR THIS ENTRY, so NO edition year is asserted: IMC (17.03), IFGC (17.06), IFC (17.07), UPC (17.08), Washington State Energy Code (17.09), Uniform Code for the Abatement of Dangerous Buildings (17.11), Uniform Housing Code (17.12), IEBC (17.17), ISPSC (17.18) and International Wildland-Urban Interface Code (17.19).. Local amendments apply — see the Mercer Island overview page for the full list.
The 2020 Edition, named at MICC 17.05.010, which attributes it to the State Building Code Council's adoption in WAC Chapter 51-52. Two cautions. Washington cities disagree — one names 2021 where six name 2020. And the attribution cannot be checked against the free state source: WAC 51-52-003 adopts only the 2021 International Mechanical Code, and WAC 51-52-1500 ADDS referenced standards rather than restating them, so the edition lives in the model code's own table. Confirm with the building official.
Sources & verification
Verified against official sources. Last reviewed 2026-09-16.
Codes & ordinances
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