Do you need a permit to replace a roof in Jackson County, MO?

Jackson County, Missouri

county

303 W Walnut, Independence, MO 64050

Not required

Not required

Jackson County Code Chapter 54, Section 5409.4(a), lists work exempt from a building permit; item 6 reads: "Roofing on residential or accessory buildings with not more than 2 existing layers." A roof that already carries more than two layers is outside that exemption and needs a permit, so count the layers before quoting the job. The cost of guessing wrong: Section 5410.1 provides that when the building official has determined that unauthorized work "has been performed without first obtaining proper permits, permit fees shall be double the normal fee."

Jackson County Code Chapter 54 (as amended August 9, 2023) adopts the 2018 International Building Code, 2018 International Residential Code, 2018 International Mechanical Code, 2018 Uniform Plumbing Code, 2018 International Energy Conservation Code, 2018 International Fire Code, and 2018 International Existing Building Code, plus the 2017 National Electrical Code (NFPA 70), applicable to "the unincorporated area of Jackson County and on all Jackson County-owned real property."

Not required — Jackson County Code Chapter 54, "Building Code," last amended by Ordinance 5765 (effective August 8-9, 2023), adopts the 2018 International Building Code and 2018 International Residential Code by reference, governing "the unincorporated area of Jackson County and on all Jackson County-owned real property." The chapter runs section 5400 (adoption, adopted appendices, and exemptions) through section 5411.7 (license suspension/revocation), covering administration, permitting, inspections, fees, and trade licensing. Its only "Chapter 9" reference is to 2018 IBC Chapter 9, section 903.2.8, residential fire protection systems, adopted as optional; the chapter contains no amendment to, or other reference touching, IRC Chapter 9 Roof Assemblies. No UL 2218, Class 4, or impact-resistance provision appears anywhere in the chapter.

"Roofing on residential or accessory buildings with not more than 2 existing layers" is exempt from a building permit (Jackson County Code Chapter 54, Section 5409.4(a), item 6, as amended August 9, 2023).

Combined general sales tax rate for unincorporated Jackson County is 5.7250% at the base county rate, which already includes the Kansas City Metropolitan Zoological District tax (Missouri DOR jurisdiction code 00000-095-000: 4.225% state + county + zoo district), per the DOR's statewide Sales/Use Tax Rate Table for July 2026. Multiple fire protection districts stack on top in unincorporated areas -- Central Jackson County FPD and SNI Valley FPD (00000-095-001, -004) raise it to 6.2250%; Inter City FPD (00000-095-002) raises it to 6.7250%; Southern Jackson County FPD (00000-095-005) raises it to 6.2250%. Incorporated cities within Jackson County (Kansas City, Independence, Blue Springs, Grandview, Grain Valley, Lee's Summit, Raytown, etc.) each carry their own separate, higher combined rates layered with city and district tax -- this county-only figure applies to unincorporated parcels. Missouri's own Contractors Tax Matrix (DOR Audit Services, Industry Guidance, eff. 10-24-2022, https://dor.mo.gov/taxation/business/documents/Contractors_000.pdf) treats a roofing contractor as the final consumer of materials incorporated into real property: "Contractor sales of tangible personal property where title passed to the customer after installation" is listed Exempt, while "Tangible personal property to be sold as an attachment to real property" is listed Taxable -- meaning the contractor owes sales/use tax on shingles, underlayment, etc. at the point of purchase from the supplier, and does not separately charge the homeowner sales tax on the installed roof or on labor. Jackson County does not collect a construction use tax at building-permit issuance (the Colorado home-rule pattern does not apply here); the DOR's own Sales/Use Tax page (https://dor.mo.gov/taxation/business/tax-types/sales-use/) describes local use tax as a self-reported obligation -- "Use tax is imposed directly upon the person that stores, uses, or consumes tangible personal property in Missouri," with "a purchaser ... required to file a use tax return if the cumulative purchases subject to use tax exceed two thousand dollars in a calendar year" -- not a sum collected at the permit counter.