Permitting Authorities / Idaho / Jerome County - Building Safety Department
Do you need a permit to replace a roof in Jerome County, ID?
Adopted codeJerome County - Building Safety Department
Yes, a permit is required to replace a roof in Jerome County, ID, issued by Jerome County - Building Safety Department. HOW A JOB IS BOOKED AND INSPECTED. Jerome County takes applications either on paper or through its online Citizen Portal, which offers a Residential Building Permit among six application types; the County's Applications page says "Prefer less paperwork? Electronic submittal is available now in lieu of these forms." Inspections are called in on a dedicated line, 208-324-9115, and the permit form prints "24 HOUR NOTICE REQUIRED FOR INSPECTIONS". The Building Department warns that "When calling in an inspection you may request morning or afternoon; we do not guarantee the time our inspector will be able to be on site", so a crew should not plan a same-day dry-in around a promised slot. The inspections named on the face of the County's own permit form are siting, footings, foundations, mechanical, framing, insulation, sheetrock and final; that list is written for new construction and the County publishes no separate roofing inspection sequence, so confirm with the office which inspections a reroof will draw. The permit form also states that "It shall be the duty of the permit holder or their agent to notify the building official that such work is ready for inspection", and that "Every permit shall become invalid if the work authorized by such permit is suspended or abandoned for a period of 180 days." Starting without the permit is expensive: "Double Fees may be levied whenever construction has begun prior to obtaining a building permit.".
Roof code checklist: Jerome County, ID
| Item | Answer | Code cite | Source | Verified |
|---|---|---|---|---|
| Permit to replace a roof | Yes | jeromecountyid.us | 2026-09-06 | |
| Repair permit threshold | Published | jeromecountyid.us | 2026-09-06 | |
| Layer limit / roof-over | Not published | |||
| Deck & sheathing | Not published | |||
| Drip edge | Not published | |||
| Ice & water shield | Not published | |||
| Mid-roof inspection | Not published | |||
| Impact-resistant (Class 4) roofing | Not published | |||
| Wind design criteria | Published | jeromecountyid.us | 2026-09-06 | |
| Adopted code | Published | jeromecountyid.us | 2026-09-06 | |
| Contractor license / registration | Yes | legislature.idaho.gov | 2026-09-06 | |
| Sales & use tax | Published | legislature.idaho.gov | 2026-09-06 |
Each row comes from the sourced record on this page; full wording is in the table below. "Not published" means no official source for that item was found when the record was last verified.
Jurisdiction
Jerome County, Idaho
Jurisdiction type
county
Address
300 North Lincoln, Room 200, Jerome, ID 83338
Contact
- url: https://www.jeromecountyid.us/158/Building-Department
- phone: 208-324-9262
- email: buildingdept@co.jerome.id.us
- permit_portal_url: https://jeromecountyidbuilding.portal.iworq.net/portalhome/jeromecountyidbuilding
Roofing permit required
Required
Contractor registration required
Required
Registration details
- state_level: STATEWIDE, AND INDEPENDENT OF WHATEVER THIS JURISDICTION REQUIRES. Idaho Code 54-5204(1), in the Idaho Contractor Registration Act (Title 54, Chapter 52): "On and after January 1, 2006, it shall be unlawful for any person to engage in the business of, or hold himself out as, a contractor within this state without being registered as required in this chapter." A roofer is inside the definitions rather than at their edge: "Construction" means "the performance of building, altering, repairing, adding to, subtracting from, improving, reconstructing, moving, excavating, wrecking or demolishing any building ... or improvement to real property, or to do any part thereof" (54-5203(2)), and "Contractor" means any person who "undertakes, offers to undertake, purports to have the capacity to undertake, or submits a bid to, or does himself or by or through others, perform construction" (54-5203(3)(a)). Roofing is not separately licensed in Idaho, so this registration is the whole of the state credential. THRESHOLD: 54-5205(2)(f) exempts work on "one (1) undertaking or project considered casual, minor, or inconsequential, whether by one (1) or more contracts, the aggregate contract price of which, for labor and materials and all other items, is less than two thousand dollars ($2,000)" -- a per-project figure covering labour and materials together, not annual revenue, and the same paragraph voids the exemption where the work is part of a larger project or where one job is split into contracts of less than two thousand dollars. A residential reroof is rarely under $2,000. An owner working on his own residential property is exempt (54-5205(2)(l)), as is an owner who hires a registered contractor (54-5205(2)(k)); an employee on wages is exempt but an unregistered subcontractor is not (54-5205(2)(a)). CONSEQUENCES OF NOT REGISTERING, and a homeowner should check: an unregistered contractor "shall be deemed to have conclusively waived any right to place a lien upon real property" (54-5208); may not "bring or maintain any action in any court of this state for the collection of compensation" without proving registration throughout the work (54-5217(2)); and is guilty of a misdemeanor punishable by a fine up to $1,000, up to six months in county jail, or both (54-5217(1)). AT THE PERMIT COUNTER: 54-5209(1) requires every county, municipality or district that issues building permits to request the contractor's Idaho registration number and print it on the face of the permit, or else print "no contractor registration provided". WHAT IT TAKES: an application under oath, proof of worker's compensation coverage or a statement why it is not required, and a general liability policy including products and completed operations coverage of not less than $300,000 single limit (54-5210(1)). It is a registration, not a competency licence -- there is no examination. Administered by the Idaho Contractors Board within the Division of Occupational and Professional Licenses (54-5206(1)); registrations can be checked by name at the Division's public search.
- city_level: WHETHER JEROME COUNTY ADDS ANYTHING OF ITS OWN WAS NOT ESTABLISHED, AND THE COUNTY'S FORM SHOWS WHERE THE STATE NUMBER GOES. The Jerome County Building and Zoning Permit form has a contractor block with printed fields for "REGISTRATION #" and "EXPIRATION DATE", which is where the Idaho contractor registration number and its expiry are entered, exactly as Idaho Code 54-5209(1) requires of a permit issuer. Whether Jerome County imposes a contractor registration or licence of its own on top of the state one was not established in this research: the County does not publish a codified county code or a building ordinance on its own site, and its County Ordinances page carries no licensing ordinance. No local negative is asserted here. The state registration above applies in Jerome County regardless. Note also that the County inspects for those cities that have signed an intergovernmental agreement with it, so a job inside a city may still be subject to that city's own licensing rules even though the County holds the inspection file.
Permit process note
HOW A JOB IS BOOKED AND INSPECTED. Jerome County takes applications either on paper or through its online Citizen Portal, which offers a Residential Building Permit among six application types; the County's Applications page says "Prefer less paperwork? Electronic submittal is available now in lieu of these forms." Inspections are called in on a dedicated line, 208-324-9115, and the permit form prints "24 HOUR NOTICE REQUIRED FOR INSPECTIONS". The Building Department warns that "When calling in an inspection you may request morning or afternoon; we do not guarantee the time our inspector will be able to be on site", so a crew should not plan a same-day dry-in around a promised slot. The inspections named on the face of the County's own permit form are siting, footings, foundations, mechanical, framing, insulation, sheetrock and final; that list is written for new construction and the County publishes no separate roofing inspection sequence, so confirm with the office which inspections a reroof will draw. The permit form also states that "It shall be the duty of the permit holder or their agent to notify the building official that such work is ready for inspection", and that "Every permit shall become invalid if the work authorized by such permit is suspended or abandoned for a period of 180 days." Starting without the permit is expensive: "Double Fees may be levied whenever construction has begun prior to obtaining a building permit."
Adopted code
THE 2018 EDITIONS, STATED BY THE COUNTY IN TWO OF ITS OWN PUBLICATIONS. The Jerome County Building Department's Design Criteria page lists, under the heading "Adopted Codes", the "2018 International Building Code", the "2018 International Residential Building Code", the "2018 International Existing Building Code", the "2018 International Energy Conservation Code", the "2018 International Mechanical Code" and the "2018 International Fuel Gas Code". The County's own Residential Building Permit Application states the same thing in slightly different words on the page a homeowner reads before applying, under the heading "Current Adopted Codes": "2018 International Residential Code, (IRC) Parts I-VI and IX including appendices A & B with amendments.", "2018 International Energy Conservation Code (IECC) With 2012 amendments" and "2019 Idaho Manufactured Home Installation Standard." That application also cites the residential code directly in its own permit terms ("EXPIRATION AS PER THE 2018 IRC R105.5"), which is the County applying the 2018 IRC as its operative document rather than merely naming it. STATE FRAMEWORK. Idaho's residential code is set by the Idaho Building Code Board, not by the county. 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 (1)- and two (2)-family dwellings", effective July 1, 2024, together with a list of state amendments; 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, and bars it from adopting provisions of a later IRC edition the Board has not adopted, so a county cannot be ahead of the state. Roofing sits in Part III and is included. Idaho Code 39-4116(6): "Permits shall be governed by the laws in effect at the time the permit application is received." WHAT IS NOT ESTABLISHED, AND IT MATTERS FOR ROOFING. Jerome County does not publish the ordinance by which it adopted these editions, and it does not publish the amendment list its own application refers to when it says "with amendments". Its County Ordinances page lists seventeen ordinances, none of which is a building code. The one local amendment the County does publish is a structural live load rather than a roofing rule: "Table R301.5 is amended to require a minimum uniform live load of 40 PSF in habitable attics and sleeping rooms." So the amendments to the roofing chapter are unknown here rather than shown to be absent, and this record holds the fields that would depend on reading them.
Repair permit threshold
THE COUNTY'S RULE IS A UNIVERSAL ONE WITH A SINGLE PUBLISHED EXEMPTION, AND THE EXEMPTION IS NOT ABOUT ROOFS. The Jerome County Residential Building Permit Application states, in bold at the head of its instruction page: "Jerome County requires a Building Permit before ANY construction can begin. Double Fees may be levied whenever construction has begun prior to obtaining a building permit." The only work that page exempts is listed in a single line under "Current Adopted Codes": "One-story detached accessory structures, provided the floor area is no greater than 200 feet, are exempt from permit." A house is not a detached accessory structure and a reroof is not one either, so that exemption does not reach a roof covering replacement on a dwelling. THE DEPARTMENT PAGE SAYS THE SAME THING FROM THE OTHER DIRECTION. Under the heading "When do you need a permit in Jerome County? (Residential Use Only)" the Building Department lists four items: "Remodels and Additions", "If the structure is over 200 sqft", "If there are utilities installed in the structure, i.e. electricity or plumbing" and "If the structure is permanently affixed to the ground". A dwelling meets the size, utility and permanence tests in every case, so those items do not carve a reroof out either. WHERE A REROOF IS FILED. The County's online portal offers six application types - Residential Building Permit, Commercial Building Permit, Mechanical/HVAC Permit, Manufactured Home, Sign Permit and Agriculture Permit. There is no separate roofing or reroof permit type, so residential roof work is filed on the Residential Building Permit. WHAT IS NOT PUBLISHED, AND WHY THAT SHOULD BE CHECKED BEFORE A SMALL REPAIR. Jerome County publishes no exemption list of its own beyond the accessory structure line above, and it does not publish the adopting ordinance that would carry one. So there is no published County figure - no square footage, no dollar value, no number of shingles - below which a repair is exempt. Ring the Building Department at 208-324-9262 before treating a small patch as exempt rather than reading a threshold into the silence.
Wind design criteria
THE COUNTY PUBLISHES ITS OWN DESIGN CRITERIA, AND IT DOES NOT PRINT A WIND SPEED BASIS. The Jerome County Building Department's Design Criteria page reads, line by line: "Wind Speed: 115 MPH", "Wind Exposure: C", "Ground Snow Load: 30 PSF", "Seismic Design Category: C", "Presumed Soil Bearing Pressure:1500 PSF without soils investigation", "Frost Depth: 24 inches", "Elevation: 4048 feet above sea level" and "Climate Zone: 5B". Between the snow load and the seismic category the same page carries the County's one published local amendment: "Table R301.5 is amended to require a minimum uniform live load of 40 PSF in habitable attics and sleeping rooms." The identical block is reprinted on the face of the County's Residential Building Permit Application, so these are the numbers a Jerome County permit is actually reviewed against. READ THE WIND FIGURE CAREFULLY. The County prints "115 MPH" without saying whether that is an ultimate design wind speed, a three-second gust on the older nominal basis, or a fastest-mile figure. Those are different numbers for the same loading and they are not interchangeable, so a designer should settle the basis with the building official before running a calculation rather than assuming one. Exposure C is the open-country exposure, which is what most of this county is. WHAT THE 30 PSF GROUND SNOW LOAD MEANS ON A ROOF. It is a ground load, not a roof load; the roof snow load is derived from it under the code's own procedure and is not stated by the County. The 40 PSF amendment above is a floor live load for habitable attics and sleeping rooms, not a roof load, and must not be read as one. The State of Idaho also deletes the model code's wind-borne debris opening-protection section statewide: IDAPA 24.39.30.600.03(d) reads "Section R301.2.1.2 Protection of Openings. Delete." That is a 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.
Sales & use tax
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 reaches roofing work in Jerome County. The first is the resort-city local-option tax, which Idaho Code 50-1044 confines to a resort city "with a population not in excess of ten thousand (10,000)"; the Idaho State Tax Commission publishes the list of cities that levy one, and no Jerome County city appears on it, nor does a county have that authority. The second is 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. 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.
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Roofing in IdahoState hub
Related guides
The building permitting authority for unincorporated Jerome County, Idaho, in the Magic Valley north of Twin Falls. The County runs its own Building Safety Department under a certified building official, and it also inspects for those cities inside the county that have signed an intergovernmental agreement with it, so a roofer working a small-town job here should ask which office holds the file before assuming the city runs its own counter. The County publishes its climatic and geographic design criteria on its own page and repeats them on the face of the residential permit application, which is where the numbers a roofer needs come from. It publishes one express local amendment to the residential code, and that amendment is a floor-live-load rule, not a roofing rule. What it does not publish is the adopting ordinance itself or the full amendment list, so several roofing questions cannot be answered from the County's own documents and this record says so rather than guessing at them.
No NOAA hail reports within 10 miles of the center of Jerome County, ID in the last 5 years (data through Oct 7, 2026).
Source: NOAA Storm Prediction Center severe weather database and daily storm reports (reports since the start of the current year are preliminary), within 10 miles of the center of Jerome County, ID. Data through Oct 7, 2026, not updated since. A report is an observation, not a damage record.
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Sources
- jeromecountyid.us verified 2026-09-06
- jeromecountyid.us verified 2026-09-06
- jeromecountyidbuilding.portal.iworq.net verified 2026-09-06
- legislature.idaho.gov verified 2026-09-06
- legislature.idaho.gov verified 2026-09-06
- legislature.idaho.gov verified 2026-09-06
- legislature.idaho.gov verified 2026-09-06
- legislature.idaho.gov verified 2026-09-06
- legislature.idaho.gov verified 2026-09-06
- legislature.idaho.gov verified 2026-09-06
- dopl.idaho.gov verified 2026-09-06
- edopl.idaho.gov verified 2026-09-06
- jeromecountyid.us verified 2026-09-06
- jeromecountyid.us verified 2026-09-06
- jeromecountyid.us verified 2026-09-06
- adminrules.idaho.gov verified 2026-09-06
- legislature.idaho.gov verified 2026-09-06
- legislature.idaho.gov verified 2026-09-06
- tax.idaho.gov verified 2026-09-06
- tax.idaho.gov verified 2026-09-06
- tax.idaho.gov verified 2026-09-06