Do you need a permit to replace a roof in Grain Valley, MO?

City of Grain Valley, Missouri

city

711 Main Street, Grain Valley, MO 64029

Required

The city's Forms and Permits page lists "Roofs" as its own permit category among the Community Development permits, with applications handled through the Civic Review digital permitting portal, and publishes a roof-permitting standard operating procedure among its permit documents.

The Building and Codes page states: "The Board of Aldermen approved the adoption of the 2018 International Building Codes and the 2017 National Electric Code at the July 26th, 2021 Board of Aldermen meeting, to take effect immediately," with local amendments published by the city.

Required — Drip edge is required at eaves and rake edges of shingle roofs (IRC R905.2.8.5). The jurisdiction adopted the 2018 International Residential Code via Ordinance No. 2550 (7-26-2021; Article V, Section 500.100 amendments); that instrument, read in full, does not amend R905.2.8.5, so the code's drip-edge requirement stands as enacted local law. About drip edge

Required — Section 500.100.C.4, Table R301.2(1) as amended, states: "Ice Shield Underlayment Required: Yes." (City of Grain Valley Code of Ordinances, adopting the 2018 IRC effective May 1, 2021, per Ordinance No. 2550, 7-26-2021.) About ice & water barrier

Not required — City of Grain Valley Code of Ordinances Chapter 500, Article V, Section 500.100 "International Residential Code -- Adoption -- Amendments" -- which adopts the 2018 International Residential Code effective May 1, 2021 and carries the city's local amendments to it, last amended by Ordinance No. 2550 adopted July 26, 2021 -- was read in full, including the complete amendment list from R108.2 through E4002.14. The only roof-covering amendments concern roof drainage discharging away from the foundation and a re-roofing threshold under which replacing more than 10 percent of the roof covering in any three-year period is treated as a re-roof governed by Chapter 9 as amended. No amendment to Chapter 9 imposes an impact-resistance standard, and no UL 2218 or Class 4 impact requirement appears in the city's adopted code or its amendments.

Section 500.100.C.23, amending IRC Section 908.1 General: "Re-roofing includes any repairs of more than ten percent (10%) of the total roof covering in any three-year period. A repair of ten percent (10%) or less of the total roof covering in any three-year period may utilize approved roofing materials comparable to the existing roofing materials."

90 mph wind speed (Section 500.100.C.4, Table R301.2(1) as amended, within the ordinance adopting the 2018 IRC effective May 1, 2021, per Ordinance No. 2550, 7-26-2021): "Table R301.2(1) shall include the following. ... Wind speed: 90 mph." The amended table's list of inserted data items does not include separate Topographic Effects, Special Wind Region, or Windborne Debris Zone entries (several neighboring jurisdictions' tables state each of those explicitly as "No"); Grain Valley's own published table simply does not address them.

Combined general sales tax rate in Grain Valley (Jackson County) is 8.7250% at the base city rate, which already includes the Kansas City Metropolitan Zoological District tax plus a Jackson County fire protection district tax (Missouri DOR jurisdiction codes 28090-095-001 Central Jackson County FPD or 28090-095-004 SNI Valley FPD), per the DOR's statewide Sales/Use Tax Rate Table for July 2026. Stacked CIDs raise the rate further -- the Grain Valley Marketplace CID and Village of Grain Valley CID (28090-095-002, -003) push it to 9.7250% -- and a doubly-stacked CID+TDD combination, the Grain Valley Mercado CID + Grain Valley Mercado TDD (28090-095-005), reaches 10.7250%, the highest rate found in Grain Valley. 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. Unlike Colorado home-rule cities, Missouri cities do not collect a construction use tax at building-permit issuance; 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.