Do I need a permit in Midway, Utah?
Midway sits in Utah's unique Wasatch Valley, where three things shape nearly every permit decision: the Wasatch Fault runs directly beneath the city (seismic codes matter), the frost depth reaches 30 to 48 inches depending on elevation (footings must go deep), and the soil here is Lake Bonneville sediment—expansive clay that moves with moisture (foundation design gets scrutiny). The City of Midway Building Department enforces the 2015 International Building Code with Utah state amendments, plus local amendments that reflect the town's mountain-valley character and the seismic reality. Owner-builders can pull permits for owner-occupied residential work, which opens up the possibility of DIY projects—but the department will require inspections at the right stages, and the seismic and soil conditions mean some systems need engineering. Midway's permit process is straightforward and friendly compared to larger Utah cities, but you need to understand what triggers the requirement and what the local conditions demand.
What's specific to Midway permits
Midway's biggest wild card is the Wasatch Fault. It's not just a theoretical concern—the city sits directly on or very near the fault trace. This means the 2015 IBC's seismic design provisions apply with full force. If you're doing structural work—new foundation, significant remodeling, deck attachment to the house—the building department will want to see calculations that account for seismic loads. For a simple wood deck or a small shed, this usually means standard prescriptive framing (tables in the IRC). For anything touching the main house structure, especially a second story, basement, or new foundation, you'll need a licensed engineer's stamp. This isn't unique to Midway, but it's enforced more carefully here than in less seismic areas.
Frost depth is your second constraint. At 30 to 48 inches depending on your elevation in the Wasatch Valley, any footing—for a deck, a shed, a garage, a fence—must extend below the frost line to prevent heave. This is mandated by IRC R403.1.4.1. The exact depth on your property depends on your elevation and site conditions. The City of Midway Building Department can tell you the frost depth for your address, and most inspectors will spot-check footings to confirm they go deep enough. Shallow footings are the #1 reason Midway building inspectors flag jobs for correction. Plan on digging deeper than you would in lower-elevation Utah areas.
Soil expansion is the third factor. Lake Bonneville sediments on the valley floor include expansive clay. When clay dries out, it shrinks; when it gets wet, it swells. This affects foundations, slabs, and retaining walls. The city may require a soil test before you pour a foundation or build a significant retaining wall. Perimeter foundations and slabs sometimes need special detailing—thickened edges, moisture barriers, or post-tensioning—depending on the fill and building design. It's not unusual for the department to ask for a geotechnical engineer's report on residential projects that involve new fill, new slabs, or structures on the valley floor. This isn't always a deal-breaker, but it adds cost and time.
Permit filing in Midway is handled by the City of Midway Building Department. As of this writing, the department's online portal status is uncertain—verify directly with the department before you assume online filing is available. Call or visit city hall to ask. In-person filing is reliable: bring your plans, proof of property ownership or authorization, and the application fee. Most routine residential permits (decks, small sheds, interior work) process over-the-counter or within 1 to 2 weeks. Plan review for anything involving new foundation or structural changes can take 2 to 3 weeks because the department reviews seismic and soil factors carefully.
Owner-builder permits are allowed in Midway for owner-occupied residential projects. You can pull a permit yourself if you own the home and you're doing the work yourself or hiring contractors to do it under your supervision. You cannot be a contractor for hire using an owner-builder permit—that requires a contractor license. The department issues the permit to you, and you're responsible for scheduling inspections and ensuring the work meets code. Inspections happen at key stages: foundation/footing before backfill, framing before drywall, electrical/plumbing before cover-up, and final walk-through.
Most common Midway permit projects
Midway homeowners and builders file permits most often for decks, additions, remodels, and new sheds or accessory structures. Each has its own trigger point, fee, and code trap—and in Midway, seismic and frost-depth rules add a layer of complexity. Below are the projects that show up most in the Building Department's queue. If your project isn't listed, call the department directly; they'll confirm the permit requirement in a 5-minute conversation.
City of Midway Building Department contact
City of Midway Building Department
City of Midway, Midway, Utah (contact city hall for building department address and hours)
Search 'Midway UT building permit phone' or call Midway city hall to confirm
Typically Monday–Friday, 8 AM–5 PM (verify directly with the department)
Online permit portal →
Utah context for Midway permits
Utah adopts the 2015 International Building Code (IBC) with state amendments, and Midway enforces that standard. The state code includes amendments for seismic design, wind load, and snow load that reflect Utah's climate and geology. For Midway specifically, the Wasatch Fault seismic hazard is the most consequential state-level rule: any structural work must account for seismic forces per the 2015 IBC Chapter 11. Utah also has statewide electrical, plumbing, and mechanical codes aligned with the national standards (NEC, IPC, IMC), so electrical subcontractors must be licensed and electrical work must be inspected. Owner-builder permits are permitted under Utah law for owner-occupied residential structures, but the home must be owner-occupied and you must do the work yourself or directly supervise licensed trades. The state does not allow owner-builders to act as contractors for hire.
Common questions
How deep do footings need to go in Midway?
At minimum, 30 to 48 inches below grade, depending on your elevation and the exact frost depth on your property. IRC R403.1.4.1 requires footings to extend below the frost line. Midway's frost depth varies from about 30 inches in the lower valley to 48 inches at higher elevations. The Building Department can confirm the frost depth for your address. Many inspectors use 48 inches as a safe default for the Wasatch Valley. Footings shallower than the frost line will heave during freeze-thaw cycles and damage the structure.
Do I need a permit for a small deck or shed in Midway?
Yes. Most jurisdictions exempt detached structures under 200 square feet and decks under 200 square feet from permits, but Midway treats these as requiring permits. A small deck or shed still needs a footing inspection to confirm it meets the 30- to 48-inch frost depth. Call the Building Department to confirm—a 90-second conversation will tell you whether your specific project needs a full permit or a simpler inspection process. Don't assume it's exempt; a footing failure is not worth the risk.
What if my property is on the Wasatch Fault?
Midway sits on or very near the Wasatch Fault, so seismic design applies to all structural work. The 2015 IBC requires seismic calculations for new construction and major remodels. For simple framing work (like a wood deck), the prescriptive tables in the IRC often suffice and the inspector can verify the framing visually. For anything more complex—new foundation, second story, basement, or a large addition—you'll need a licensed engineer's seismic design. This adds $1,000–$3,000 in engineering fees depending on the scope. Don't skip this step; the fault is real and the code enforces it.
Can I pull a permit myself as an owner-builder in Midway?
Yes, if you own the home and it's owner-occupied, you can pull a permit and do the work yourself or hire licensed contractors under your supervision. You must be present during inspections and are responsible for code compliance. You cannot use an owner-builder permit to act as a contractor for hire. Call the Building Department and ask for the owner-builder permit application. They'll walk you through the process. Plan on scheduling inspections at key stages: foundation/footing, framing, mechanical/electrical/plumbing, and final.
Do I need a soil test or geotechnical report for my foundation?
It depends on the project and the fill. Lake Bonneville sediments in Midway include expansive clay. If you're building on undisturbed native soil at your elevation, the department may accept standard prescriptive foundation design (per IRC Chapter 4). If you're building on fill, on the valley floor with clay soils, or if you're adding a new slab, the department may require a geotechnical report by a licensed professional engineer. Ask the Building Department early—before you excavate. A soil test costs $500–$1,500 but can save you from costly foundation problems later. It's not optional if the department requires it.
How much does a permit cost in Midway?
Permit fees in Midway are typically based on project valuation: usually 1.5–2% of the estimated construction cost, with a minimum fee of $75–$150. A simple shed or deck might run $100–$300. An addition or remodel will cost more. Call or visit the Building Department for a fee estimate once you know the scope and rough valuation. Fees are due when you file; they don't get refunded if the project is rejected, so plan accordingly.
What's the permit timeline in Midway?
Plan on 1 to 2 weeks for routine residential permits (decks, small sheds, interior remodels). Anything involving new foundation, structural changes, or seismic design review can take 2 to 3 weeks for plan review. Inspections are scheduled as needed during construction—typically 24 hours' notice. Over-the-counter permit issuance (for very simple projects) is sometimes available, but call the department to confirm. Once you have the permit, you have a set time window (usually 6 months to 1 year) to start work and complete inspections.
Ready to file?
Call the City of Midway Building Department to confirm the permit requirement and get an estimate of the cost and timeline. Have your property address, project description, and rough scope of work ready. A 5-minute conversation will tell you what you need and what comes next. If you're doing structural work or building on new fill, ask about seismic and soil design requirements upfront—they affect cost and timeline more than most homeowners expect.