City of Meridian - Community Development Department, Building Services

City of Meridian, Idaho

city

Meridian City Hall, 33 E. Broadway Avenue, Suite 102, Meridian, ID 83642

Required

Required

Meridian issues a dedicated re-roof permit and separates residential from commercial. The City's own building permit report, "CITY OF MERIDIAN BUILDING PERMITS FOR THE MONTH", lists issued permits under a "RESIDENTIAL ReRoof" heading with R-ROOF permit numbers and under a "COMMERCIAL ReRoof" heading with C-ROOF numbers; eight residential re-roof permits were issued in November 2025, ordinary tear-off and replace jobs, one described as "Remove old roof and haul away. Provide and install ice and water shield, synthetic underlayment, starter strip, OC Duration shingles, ridge and hip caps, new box vents, new pipe flashings, new drip edge, flashing and caulking as needed." Meridian amends the adopted residential code's list of work exempt from permit in only three places, and none of them is roofing: Meridian City Code 10-1-3 replaces item 2 with a fence exemption, replaces item 7 with "Prefabricated swimming pools that are not greater than four (4) feet ... deep", and adds "A new item, no. 11 ... Flagpoles." ONE LOCAL RULE THAT SAVES A ROOFER MONEY, and read its heading before relying on it: Meridian rewrites the exceptions to the residential code's smoke alarm section R314.2.2 and carbon monoxide alarm section R315.2.2, both headed "Alterations, repairs and additions", so that "Work involving the exterior surfaces of dwellings, such as, but not limited to, replacement of roofing or siding, or the addition or replacement of windows or doors, or the addition of a porch or deck or electrical permits, are exempt from the requirements of this section." That exempts a re-roof from the whole-house alarm retrofit those two sections would otherwise trigger. It is not an exemption from the permit. Permit fees are set by a fee schedule adopted by City Council resolution, payment is due when the permit is issued, and up to eighty percent of a permit fee may be refunded on written request within one hundred eighty days of issuance if no work has started, plan review fees excepted (Meridian City Code 10-1-5). A permit may be transferred between permit holders only with the written approval of the Community Development Department Director; an expired permit may not be transferred. Applications and inspection scheduling run through the City's Accela Citizen Access portal, which carries a Building Services module.

STATE-MANDATED EDITION, LOCALLY ENACTED. Meridian City Code 10-1-1 adopts, "in full as if set forth at length herein", the 2018 edition of the International Residential Code "as amended by Section 10-1-3 of this chapter", together with the 2018 International Building Code (amended by 10-1-2), the 2018 International Swimming Pool and Spa Code, the 2018 International Energy Conservation Code (amended by 10-1-4) and the 2018 International Existing Building Code "with no amendments". The adopting ordinances are Ord. 17-1754, adopted November 28, 2017 and effective January 1, 2018, and Ord. No. 20-1905, section 1, adopted December 1, 2020 and effective January 1, 2021. The City code as published is codified through Ordinance No. 26-2129, enacted July 7, 2026. Idaho's residential code is set by the Idaho Building Code Board, not by the city: IDAPA 24.39.30.600.03 adopts the "International Residential Code, 2018 Edition ... Parts I, II, III, and IX of the 2018 Edition" for one- and two-family dwellings, effective July 1, 2024, and Idaho Code 39-4116(2) requires a local government that issues building permits and performs code enforcement to adopt the Idaho residential code parts I-III and IX by ordinance. Roofing sits in Part III and is included. The same subsection bars a local jurisdiction from adopting provisions of a later IRC edition the Board has not adopted, so a city cannot be ahead of the state, and Meridian is not. Idaho Code 39-4116(6) settles which edition governs a given job: "Permits shall be governed by the laws in effect at the time the permit application is received."

Required — IDAPA 24.39.30.600.03, the State of Idaho's complete list of amendments to the 2018 International Residential Code, read in full, does not touch Chapter 9, Roof Assemblies, and Meridian City Code 10-1-3, the City's own list of amendments to that code, twenty-eight items read in full, does not touch it either. The base 2018 IRC drip-edge requirement for asphalt shingle roofs, Section R905.2.8.5, therefore applies unmodified. Confirm the flashing detail and the fastener spacing against the shingle manufacturer's printed instructions as well, which the code makes binding. About drip edge

Not required — Sourced from Meridian's own adopted climatic and geographic design criteria, not inferred from climate. Meridian City Code 10-1-3(K) completes Table R301.2(1) of the adopted residential code and prints, in that table, "ICE BARRIER UNDER LAYMENT REQUIRED: No". The same table sets "WEATHERING: Severe", "FROST LINE DEPTH: 24 inches" and "WINTER DESIGN TEMP: 10 degrees F (annual mean temperature: 51.1 degrees F)", so the absence of an ice barrier requirement here is a deliberate entry by the City rather than a mild-climate default. Idaho's state rule does not answer this question: IDAPA 24.39.30.600.03 amends nothing in Chapter 9 of the 2018 International Residential Code, and Table R301.2(1) is the one part of Part III that Idaho Code 39-4116(4)(c) leaves a city or county free to fill in and amend for local conditions. Two practical notes. An ice barrier is not forbidden, and Meridian roofers install one by choice: a residential re-roof permit issued by the City in November 2025 describes the work as "Provide and install ice and water shield, synthetic underlayment, starter strip, OC Duration shingles". Neighbouring jurisdictions complete the same table for themselves and may answer differently, so confirm the answer for the address, not for the metro. About ice & water barrier

Not required — No impact-resistance mandate applies in Meridian. IDAPA 24.39.30.600.03, the State of Idaho's complete list of amendments to the 2018 International Residential Code, read in full, contains no amendment to Chapter 9, Roof Assemblies, and no UL 2218, Class 4 or FM 4473 impact-rating reference anywhere in the rule. Meridian City Code Title 10, Chapter 1, the City's own adopting instrument and its full lists of amendments to the building, residential and energy codes, was read in full and contains no such reference either. Neither the state's nor the city's adopted code imposes an impact-resistant roof covering requirement. An insurance discount for impact-rated shingles, where a carrier offers one, is a matter between the homeowner and the insurer and is not a code requirement.

Meridian sets no size, area or dollar threshold below which a roof repair escapes a permit. Its adopting instrument, Meridian City Code Title 10 Chapter 1, was read in full, and its three amendments to the adopted residential code's list of work exempt from permit concern fences, prefabricated swimming pools and flagpoles only; no roofing item is added to that list, and the City publishes no separate roof repair threshold. The State of Idaho adds none either: the two state amendments to the same exempt-work list change a dimension in the swimming pool item and add flagpoles. Do not rely on the hundred-square-foot roof repair figure that appears in Idaho's state building code rules. It sits inside the definition of "Minor Alteration", which that rule says "is used for the purpose of administering annual permits" -- a blanket permit the state issues to state agencies for work on buildings they already own or operate. It is not a permit exemption for a homeowner or a roofing contractor anywhere in Idaho.

Meridian fills in the adopted residential code's Table R301.2(1), Climate and Geographic Design Criteria, itself. Meridian City Code 10-1-3(K) prints, under its own column headings: "WIND DESIGN SPEED (mph): 115 mph for risk occupancy II or less; 120 mph for risk occupancy III or greater" and "WIND DESIGN TOPOGRAPHIC EFFECTS: No, in accordance with Section R301.2.1.5". A one- or two-family dwelling is risk category II, so the residential figure is the 115 mph one; the 120 mph figure belongs to higher risk categories and should not be carried onto a house. The City's table prints no basis label with the speed -- it does not say "3-second gust", "nominal" or "ultimate" -- so use the figure as the City states it and do not convert it to another basis. The same table sets "GROUND SNOW LOAD: 20 psf. Design roof load shall not be less than a uniform snow load of 25 psf.", "SEISMIC DESIGN CATEGORY: C", "WEATHERING: Severe", "FROST LINE DEPTH: 24 inches" and "TERMITE: Slight to Moderate". One statewide wind rule that reaches Meridian: the State of Idaho deletes the model code's wind-borne debris opening-protection section, IDAPA 24.39.30.600.03(d) reading "Section R301.2.1.2 Protection of Openings. Delete.", and Meridian City Code 10-1-3(L) repeats the deletion locally. That is an opening -- window and door -- provision rather than a roofing one, and under Idaho Code 39-4116(4)(b) a local jurisdiction may not re-adopt a provision the Idaho Building Code Board has expressly rejected.

Neither the State of Idaho nor the City of Meridian modifies the model rule. IDAPA 24.39.30.600.03, the Idaho Building Code Board's complete list of state amendments to the 2018 International Residential Code, seventeen items, read in full, contains no amendment to Chapter 9, Roof Assemblies. Meridian's own amendment list, Meridian City Code 10-1-3, twenty-eight items lettered A through BB, read in full, contains no amendment to Chapter 9 either. The base 2018 IRC provisions therefore apply unmodified. Base-code rule, 2018 IRC Section R908.3.1.1, Roof recover not allowed: a roof recover is not permitted where the existing roof or covering is water-soaked or has deteriorated to the point that it is not an adequate base for additional roofing; where the existing roof covering is slate, clay, cement or asbestos-cement tile; or where the existing roof already has two or more applications of any type of roof covering. One existing layer may be recovered; a second forces a full tear-off. A local Idaho amendment to this rule would be unusually visible: Idaho Code 39-4116(4)(d) allows a city or county to amend this part of the residential code only by ordinance, on a recorded finding that "good cause for building or life safety exists" and that the amendment is "reasonably necessary", after a public hearing noticed in the official newspaper with at least thirty days' written notice to the local chapters of the industry bodies listed in Idaho Code 39-4109(5).

IDAPA 24.39.30.600.03, the State of Idaho's complete list of amendments to the 2018 International Residential Code, read in full, contains no amendment to Chapter 8, Roof-Ceiling Construction, which carries the code's roof sheathing provisions, nor to Chapter 9, Roof Assemblies. Meridian City Code 10-1-3, the City's own list of amendments to the same code, twenty-eight items read in full, does not amend Chapter 8 or Chapter 9 either. The base 2018 IRC roof sheathing and decking requirements therefore apply unmodified, along with the shingle manufacturer's printed installation instructions, which the code makes binding. One caution about a provision that mentions roof sheathing but is not about decking a roof: the footnote to Meridian's replacement Table R302.1(1), Exterior Walls, permits the fire-resistance rating "to be reduced to zero (0) hours on the underside of the eave overhang if fireblocking is provided from the wall top plate to the underside of the roof sheathing." That is a fire separation rule about eave soffits, not a roof decking requirement.

6.0% -- the Idaho state rate, with no local add-on. Idaho Code 63-3619 imposes the state sales tax "at the rate of six percent (6%)". Idaho has only two kinds of local sales tax, and neither applies here: a resort-city local-option tax, which Idaho Code 50-1044 confines to resort cities "with a population not in excess of ten thousand (10,000)" and which the Idaho State Tax Commission's own list of participating cities does not include Meridian in; and an auditorium-district tax, which the Tax Commission states "can charge a local sales tax only for short-term lodging (30 days or less)" and so never reaches roofing work. Idaho counties levy no sales tax at all, so Ada County adds nothing. HOW A ROOF IS TAXED, which matters more than the rate: the Tax Commission's contractor guidance states that "Idaho sales tax law says contractors are the consumers (end users) of all the goods they use. As a result, they must pay sales tax on all purchases", and it names roofers among the contractors it covers. The roofer pays the 6% on materials at the supply house; the homeowner's invoice carries no sales tax line at all, on materials or on labour, because "a contractor doesn't charge sales tax to the customer" and the tax is absorbed into the bid. The Commission adds that "if sales tax is charged on the bill, the customer can refuse to pay it." A customer's own sales-tax exemption does not carry over to the contractor.