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Residential Building Permit in Millcreek, Utah

Required for new residential construction, additions, structural alterations, and work requiring plan review in Millcreek. Governed by the 2021 International Residential Code (IRC) for residential construction and the 2024 International Building Code (IBC) for commercial construction, as adopted by Utah Code § 15A-2-103; the 2024 IBC superseded the 2021 IBC on July 1, 2026.

Verified 2026-06-30 · Source

When you need this permit

  • New single-family, two-family, or townhome construction
  • Residential additions or structural modifications
  • Conversion of non-habitable space to habitable space
  • Any work requiring plan review under Millcreek Municipal Code § 15-08-030

Required documents

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Fee schedule

Building Permit — valuation up to $2,000Millcreek FY25 Consolidated Fee Schedule, Item 30, MKC § 15-08-030 (dated 8/12/2024)
$76.50
Building Permit — valuation $2,001–$25,000Millcreek FY25 Consolidated Fee Schedule, Item 31, MKC § 15-08-030
$76.50 for the first $2,000, plus $16.50 for each additional $1,000 or fraction thereof, up to and including $25,000
Building Permit — valuation $25,001–$50,000Millcreek FY25 Consolidated Fee Schedule, Item 32, MKC § 15-08-030
$456 for the first $25,000, plus $12 for each additional $1,000 or fraction thereof, up to and including $50,000
Building Permit — valuation $50,001–$100,000Millcreek FY25 Consolidated Fee Schedule, Item 33, MKC § 15-08-030
$765 for the first $50,000, plus $8.50 for each additional $1,000 or fraction thereof, up to and including $100,000
Building Permit — valuation $100,001–$500,000Millcreek FY25 Consolidated Fee Schedule, Item 34, MKC § 15-08-030
$1,181 for the first $100,000, plus $6.50 for each additional $1,000 or fraction thereof, up to and including $500,000
Building Permit — valuation $500,001–$1,000,000Millcreek FY25 Consolidated Fee Schedule, Item 35, MKC § 15-08-030
$3,781 for the first $500,000, plus $5.50 for each additional $1,000 or fraction thereof, up to and including $1,000,000
Building Permit — valuation over $1,000,000Millcreek FY25 Consolidated Fee Schedule, Item 36, MKC § 15-08-030
$6,531 for the first $1,000,000, plus $4.50 for each additional $1,000 or fraction thereof
Plan Review Fee (Residential)Millcreek FY25 Consolidated Fee Schedule, Item 19, MKC § 15-08-030
40% of building permit fee
Plan Review Fee (Commercial / FCOZ)Millcreek FY25 Consolidated Fee Schedule, Items 20–21, MKC § 15-08-030
65% of building permit fee
Re-Inspection FeeMillcreek FY25 Consolidated Fee Schedule, Item 23, MKC § 15-08-040
$75 per occurrence
State SurchargeMillcreek FY25 Consolidated Fee Schedule, Item 29, MKC § 15-08-040 — applies to all permits
1% of building permit fee

Review timeline

Plan reviewMillcreek’s published plan-review target
14–14 business days

How long did your Residential Building Permit permit actually take in Millcreek?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Footing

    Forms, rebar, and grade complete before concrete poured. Footings for new homes require an elevation certificate to verify height.

  2. 2

    Foundation

    Forms, rebar, and grade complete before concrete poured.

  3. 3

    Four-Way (Framing / Mechanical / Electrical / Plumbing)

    Rough framing, mechanical, electrical, and plumbing all complete before insulation or drywall. Millcreek requires a combined four-way inspection for projects with any MEP work — separate trade inspections will NOT be scheduled.

  4. 4

    Insulation

    Insulation, vapor barrier, windows, baffles, depth markers, and supports complete; all penetrations sealed. Prescriptive requirements or REScheck required to verify R-values and U-factors.

  5. 5

    Final

    All permitted work complete.

See the full Millcreek inspection guide — scheduling & re-inspection fees →

Tips

  • Millcreek's building services page states it may take up to 14 business days before an initial plan review is completed — plan accordingly.
  • Apply online via the iWorQ permit portal at millcreekpermit.portal.iworq.net. Inspection requests must be submitted through the same portal.
  • All permit valuations use the current ICC Building Valuation Data per MKC § 15-08-030. The project cost on the application must reflect market value of labor and materials.
  • Effective July 1, 2026, the 2024 IBC governs commercial construction; the 2021 IRC continues for residential. Plans accepted before that date were reviewed under the codes in effect on the submission date.
  • Properties in the Foothills/Canyons Overlay Zone (FCOZ) require an additional Site Development Plan approval ($2,000 land use fee) and plan review at the commercial rate (65% of permit fee).

Frequently asked questions

Millcreek requires a residential building permit for: New single-family, two-family, or townhome construction; Residential additions or structural modifications; Conversion of non-habitable space to habitable space; Any work requiring plan review under Millcreek Municipal Code § 15-08-030. If your project isn't listed, confirm with Millcreek Building Department at (801) 214-2700 before starting work.

Millcreek residential building permit fees are valuation-based using the ICC Building Valuation Data: $76.50 minimum (up to $2,000 valuation), scaling to $6,531 plus $4.50 per additional $1,000 over $1,000,000. Residential plan review is an additional 40% of the permit fee. A 1% state surcharge applies to all permits. Re-inspection is $75 per occurrence. (Millcreek FY25 Consolidated Fee Schedule, MKC § 15-08-030, dated 8/12/2024)

Millcreek's published plan-review target for a residential building permit is 14–14 business days.

You'll need: Building Permit Application (iWorQ portal); Construction Plans; Energy Code Compliance; Contractor Information Sheet or Owner/Builder Certification. Depending on your project, Millcreek may also ask for: Mechanical Plans with Manual J/D/S; Structural Calculations. See the required-documents checklist on this page for details on each.

Millcreek requires 5 inspection(s) for a residential building permit, in order: Footing, Foundation, Four-Way (Framing / Mechanical / Electrical / Plumbing), Insulation, Final. Schedule each through Millcreek Building Department ((801) 214-2700).

Apply online through the Millcreek iWorQ permit portal at millcreekpermit.portal.iworq.net. Upload all required plans and documents electronically. Contact the building department at buildingservices@millcreekut.gov or (801) 214-2700 with questions.

Millcreek, Utah has adopted: 2024 International Building Code (IBC), including Appendices C and J — currently in effect as of July 1, 2026, superseding the 2021 IBC that was in effect through June 30, 2026 (Utah Code § 15A-2-103(1)(a)); see NOTE below on Millcreek's own page lagging this update; 2021 International Residential Code (IRC), including Appendix AQ (Tiny Houses) — currently in effect; unchanged by the July 1, 2026 statewide code-edition update (Utah Code § 15A-2-103(1)(b)); 2024 International Plumbing Code (IPC) — currently in effect as of July 1, 2026, superseding the 2021 IPC that was in effect through June 30, 2026 (Utah Code § 15A-2-103(1)(d)); 2024 International Mechanical Code (IMC) — currently in effect as of July 1, 2026, superseding the 2021 IMC that was in effect through June 30, 2026 (Utah Code § 15A-2-103(1)(e)); 2024 International Fuel Gas Code (IFGC) — currently in effect as of July 1, 2026, superseding the 2021 IFGC that was in effect through June 30, 2026 (Utah Code § 15A-2-103(1)(f)); 2023 National Electrical Code (NEC) — currently in effect; unchanged by the July 1, 2026 statewide code-edition update (Utah Code § 15A-2-103(1)(g)). Millcreek's Building Services page previously referenced a 2020 NEC edition (recorded as of 2026-06-30); the 2023 NEC supersedes it statewide regardless of the page's wording; 2024 International Energy Conservation Code (IECC) — currently in effect statewide as of July 1, 2026, a single edition with no residential/commercial split under current law (Utah Code § 15A-2-103(1)(h)); Historical (superseded): prior to July 1, 2026, Millcreek's Building Services page cited a 2015 IECC edition for residential and a separate 2021 IECC edition for commercial — both are now superseded by the single 2024 IECC per § 15A-2-103(1)(h); re-checked live 2026-07-16 and Millcreek's page (millcreekut.gov/165/Building-Services, via its Building Department overview page and 'Adopted Construction Codes' resource) still displayed this superseded 2015/2021 split — city page lags the statute; 2024 International Existing Building Code (IEBC) — currently in effect as of July 1, 2026, superseding the 2021 IEBC that was in effect through June 30, 2026 (Utah Code § 15A-2-103(1)(i)); Residential provisions of the 2024 International Swimming Pool and Spa Code (ISPSC) — currently in effect as of July 1, 2026, superseding the 2021 ISPSC that was in effect through June 30, 2026 (Utah Code § 15A-2-103(1)(n)); 2006 International Wildland-Urban Interface Code (IWUIC) — millcreekut.gov/165/Building-Services; applies to Foothills/Canyons Overlay Zone properties; NOTE (updated 2026-07-16): the July 1, 2026 transition forecast in the prior version of this entry has now occurred — confirmed live against Utah Code § 15A-2-103, current version (effective 7/1/2026, superseded 1/1/2027), read at le.utah.gov/xcode/Title15A/Chapter2/15A-2-S103.html. Millcreek's own Building Department page (millcreekut.gov, live 2026-07-16) still displays a banner reading 'On July 1, 2026, the State of Utah will adopt all 2024 I-Codes with State Amendments. Any Commercial project submitted on or after July 1st will need to be designed to these standards' — forward-looking, present-tense-stale wording that also narrows the transition to Commercial projects only; the statute imposes no residential/commercial distinction for IBC/IPC/IMC/IFGC/IECC/IEBC/ISPSC, so this record treats the full 2024 edition set as governing for all project types as of 2026-07-16, and flags the city page as not yet updated to reflect that the date has passed. Local amendments apply — see the Millcreek overview page for the full list.

Sources & verification

Verified against official sources. Last reviewed 2026-06-30.

Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Millcreek building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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