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Permitting Authorities / City of Davenport, Iowa - Building and Land Development (Building Division)

City of Davenport, Iowa - Building and Land Development (Building Division)

Adopted code

The permitting authority for the City of Davenport, Iowa (Scott County), the largest of the Quad Cities. Unlike Minnesota, Iowa does NOT impose a preemptive uniform statewide building code on ordinary city residential permitting. Iowa Code § 103A.10(2) makes the Iowa State Building Code applicable only to state-owned buildings, to governmental subdivisions that have opted in by ordinance, to state-funded construction, and as a backstop "in each city with a population of more than fifteen thousand that has not adopted a local building code that is substantially in accord with standards developed by a nationally recognized building code organization." Davenport, well over 15,000 population, HAS adopted its own model-code-based building code at Davenport Municipal Code Title 15, so Davenport enforces ITS OWN adopted code rather than the state default text. Roofing-code content here is city-set, not state-set, and must be read against Davenport's own ordinance. Contractor credentialing, by contrast, is a genuine statewide mandate under Iowa Code chapter 91C - and Davenport layers its own city contractor licence on top of it.

Jurisdiction
City of Davenport, Iowa
Jurisdiction type
city
Address
Davenport, IA
Contact
  • url: https://www.davenportiowa.com/services/permits
Roofing permit required
Required
Contractor registration required
Required
Registration details
  • state: STATEWIDE registration, mandatory and not city-optional. Iowa Code § 91C.2 provides that "A contractor doing business in this state shall register with the director and shall meet all of the following requirements as a condition of registration," those conditions being compliance with Iowa workers' compensation insurance law with annual evidence of coverage; possession of an employer account number or special contractor number issued by the department of workforce development under chapter 96, the Iowa employment security law; and, for an out-of-state contractor, either a $25,000 surety bond or a statement of prequalification to bid on Iowa Department of Transportation projects. Threshold: under Iowa Code § 91C.1(1)(a) a person "who earns less than two thousand dollars annually or who performs work or has work performed on the person's own property is not a contractor for purposes of this chapter," so the state registration duty attaches at $2,000 of annual earnings. Registration is administered by the Iowa Department of Inspections, Appeals and Licensing (DIAL), whose contractor registration page lists roofers among the covered trades. There is no state competency exam, apprenticeship-hours requirement or trade-specific roofing licence under chapter 91C - it is administrative registration only.
  • city: DAVENPORT ADDS ITS OWN CITY CONTRACTOR LICENCE on top of the state registration - this is the key city-versus-state split here, and it makes Davenport materially stricter than Iowa cities such as Cedar Rapids that rely on the state registration alone. Under Davenport Municipal Code Ch. 15.30, no person, firm, partnership or corporation may engage in construction contracting in the City without a current valid city licence certificate issued in accordance with that chapter. City licences are issued to INDIVIDUALS only, who may then secure permits and supervise work on behalf of a company or corporation. Applicants must meet the minimum training and experience qualifications for each licence category sought, and qualified applicants must demonstrate their capabilities by standardized testing. No licence is issued, and no contractor's licence remains valid, unless a current approved bond is on file in the office of the building official; insurance is likewise required. The City reports licence fee tiers of $300 for commercial building contractors, $200 for residential building contractors and $100 for sub-specialty contractors. A roofing contractor working in Davenport therefore needs BOTH the Iowa ch. 91C state registration AND a Davenport city contractor licence with bond and insurance.
Permit process note
Davenport building permits, including roofing permits, are issued through the City's Permits service; the City also operates an online Building Permit Application through its Action Center. The permit counter for owner-pulled permits is reported by the City at the Public Works Center, 1200 E. 46th Street, Davenport, IA, open 7:00 a.m. to 4:30 p.m. Monday through Friday except holidays. Because Davenport requires its own city contractor licence (see registration_details), a contractor must hold that licence before the City will issue a permit in the contractor's name.
Adopted code
CITY-SET, NOT STATE-GOVERNED. Davenport adopts its construction codes by its own ordinance at Davenport Municipal Code Title 15 (Buildings and Construction). Chapter 15.12 ("International Building Code and International Residential Code for One- and Two-Family Dwellings") adopts by reference the 2021 edition of the International Residential Code as published by the International Code Council as the residential building code of the City of Davenport, together with the 2021 International Building Code, each with local amendments codified in the 15.12.0xx series (for example § 15.12.052 amends Chapter 3 of the International Residential Code; that section was most recently amended by Ord. No. 2024-465, adopted 11-13-2024, and earlier by Ord. No. 2019-530, adopted 12-4-2019). The City's published Building Codes page lists the balance of the adopted family as the 2021 International Fire Code with local amendments (Ch. 15.32), the 2024 International Mechanical Code with local amendments (Ch. 15.24), and the 2023 National Electrical Code with state and local amendments (Ch. 15.16), and warns that local amendments may apply so Davenport City Code must be consulted alongside the model codes. The operative residential edition for roof-covering work in Davenport is therefore the 2021 IRC as locally amended. Iowa Code § 103A.10(2)(d) leaves this to the city: the State Building Code applies as a default only in cities over fifteen thousand that have NOT adopted a nationally-recognized local code, and Davenport has adopted one.
Ice & water shield
Required — CITY-SPECIFIC, sourced from Davenport's own local amendment table, not borrowed from any other jurisdiction. Davenport Municipal Code Sec. 15.12.052.A amends Table R301.2(1) of the adopted International Residential Code with Davenport-specific climatic and geographic design criteria, which include "Ice Barrier Underlayment Required" as "YES." See wind_design_criteria for the full table.
Mid-roof inspection
Not required — Davenport Municipal Code Sec. 15.08.320 (Inspections) enumerates the inspection sequence for permitted work: footing and foundation inspection, concrete slab or under-floor inspection, frame inspection, lath and/or wallboard inspection, and final inspection, plus a discretionary "other inspections" the building official may require. No mid-roof, dry-in, underlayment, or ice-barrier inspection is named for roofing work; an ordinary re-roof is subject only to whatever final inspection the building official requires under the general permit process.
Impact-resistant roofing
Not required — Neither the Davenport Municipal Code's International Residential Code amendments (Chs. 15.12.050 through 15.12.054, covering IRC Chapters 1, 3 and 4) nor its International Building Code amendments (Chs. 15.12.040 through 15.12.046) nor Subchapter III (Permits and Inspections, Ch. 15.08) imposes a UL 2218 or Class 4 impact-resistance requirement on roof coverings.
Repair permit threshold
CITY-SPECIFIC, and expressed qualitatively rather than numerically - Davenport publishes no square-footage, bundle-count or dollar threshold for roofing. Davenport Municipal Code Title 15, Subchapter III (Permits and Inspections) carries the general permit mandate: no person shall erect, construct, enlarge, alter, repair, move, improve, remove, convert or demolish any building, or make any replacement to building service equipment, without first obtaining a separate appropriate permit, and roofing is among the classes of work for which a permit is issued. The same subchapter contains an "Exempted Work" provision under which a permit is not required for the listed classes of work; the exemption relevant to roofing covers minor repairs that replace existing materials in kind with no structural, electrical, plumbing or mechanical change. The practical boundary in Davenport is therefore the same one used across Iowa cities: patch-level minor maintenance repair in kind is exempt, while a re-roof (tear-off or recover) of a roof area, and any work reaching the roof sheathing or framing, requires a permit. Contractors should confirm the exempt/non-exempt line with the Building Division before starting, because the boundary is a judgment applied by the building official rather than a published number.
Wind design criteria
Ground snow load Ps = 30 psf (calculations for additional drift loads use a ground snow load of 25 psf), wind design speed 115 mph, topographic effects yes, special wind region yes, wind-borne debris zone no, seismic design category A, weathering severe, frost line depth 42", termite moderate to heavy, winter design temp -4°F, ice barrier underlayment required yes, flood hazards initial NFIP identification 4-14-1978 / FIRM #170582, updated 4-5-2010, air freezing index 2000, mean annual temperature 50.5°F (Table R301.2(1) as amended by Davenport Municipal Code Sec. 15.12.052.A, most recently amended by Ordinance No. 2024-465, adopted 11-13-2024, and originally by Ordinance No. 2019-530, adopted 12-4-2019). This is Davenport's own locally-amended table, not a neighboring city's figures.
Sales & use tax
7.000% combined on retail purchases in Davenport (Scott County), Iowa: the 6.000% Iowa state sales and use tax plus a 1.000% local option sales tax (LOST) applicable in Scott County / Davenport. Davenport imposes no separate additional city sales tax on top of the 1% local option rate, and Iowa's statutory ceiling for local option sales tax is 1%, so 7.000% is both the Davenport rate and the maximum general rate achievable anywhere in Iowa. This is the rate a roofing contractor pays on materials purchased in Davenport, and it matches the rate in the other large Iowa metros (Des Moines, Cedar Rapids).

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