Do I need a permit to replace my deck in Herriman?

If your new deck is over 30 square feet or elevated more than 12 inches, yes — you need a permit. Herriman's frost depth of 30–48 inches (depending on elevation) governs how deep posts must go. The permit requires a site plan showing property lines and setbacks, plus details of post footing depth, joist size, and railing design. Plan check typically takes 3–4 weeks. Total cost is usually $200–$600 depending on deck size.

Can I build a shed without a permit in Herriman?

Only if it's under 200 square feet, not elevated, and doesn't have utilities. Once you hit 200 square feet, require utilities, or place it as a habitable structure, you need a full building permit including a foundation plan, roof framing, and setback verification. Herriman is strict about accessory-structure placement — most must be in the rear yard at least 5–10 feet from property lines. Check with the Planning Department before buying materials.

What's the frost depth in Herriman, and why does it matter?

Frost depth ranges from 30 inches in lower elevations to 48 inches in the foothills — the deeper the elevation, the deeper you dig. Footings, deck posts, and fence posts must sit below the frost line or they'll heave up when the ground freezes and thaws. An inspector will verify your footing depth at excavation and foundation inspection. Skipping this causes structural failure and code violations.

Do I need a permit for a water heater or furnace replacement in Herriman?

Yes. A mechanical permit is required for any water heater, furnace, or air-conditioning installation, even like-for-like replacements. The permit is usually straightforward and can be filed over-the-counter, but a licensed contractor (plumber or HVAC) must do the installation. Permit fee is typically $75–$150; plan review is minimal for standard equipment.

Can I finish my basement myself in Herriman?

You can do framing, drywall, painting, and flooring yourself, but electrical work must be done by a licensed electrician. Finishing a basement requires a building permit because it creates new habitable space. Egress windows are required and must meet code sizing and sill-height standards. If your basement is below grade or partially below grade, the inspector will check window well depth, drainage, and waterproofing. Plan for a 4–6 week review timeline.

What happens if I skip a permit in Herriman?

Herriman has active code enforcement. Unpermitted work will be flagged during a title search (title companies refuse to insure unpermitted additions, sheds, or major remodels), and code enforcement can order a tearout or fine you. If caught mid-project, you'll face a stop-work order and may lose time and money. The safest move is a 10-minute call to the Building Department to confirm what you need before you start.

How long does plan review take in Herriman?

Simple permits (water heater, fence, small deck) often clear over-the-counter in 1–2 weeks. Structural projects (room addition, basement finish, deck with soil report) typically take 4–6 weeks because the plan examiner checks seismic details, frost-depth compliance, and setbacks. You'll be notified of plan review comments by phone or in person; resubmit revised plans if needed. Expect 1–2 rounds of comments on complex projects.

Do I need a soil report for my deck or foundation in Herriman?

For decks, a soil report is often recommended but not always required — ask the plan examiner. For foundations, a soil report is strongly advised because Herriman's Lake Bonneville clay is expansive and seismic design is enforced. A geotechnical report runs $500–$1,500 depending on the scope but saves you from failed footings. Most engineers will recommend reports for any substantial building project in the area.

Can an owner-builder pull permits in Herriman?

Yes, for owner-occupied residential work. You can do framing, demolition, drywall, and finishing yourself, but you cannot do electrical, plumbing, or gas work — those must be done by state-licensed contractors. You pull the permit under your name, but all licensed trades do their own work and pull subpermits. This is enforced at inspection.

What's the address and phone number for Herriman Building Department?

The Herriman Building Department is part of City Hall. Contact the city website (herriman.gov) for the current phone number and mailing address. Most filings are done in person at City Hall during business hours, Monday–Friday 8 AM–5 PM. Call before visiting to confirm hours and whether walk-in permit filing is available that day.

Building Permits in Herriman, UT (2026)

Do I need a permit in Herriman, Utah?

Herriman is a growing suburb south of Salt Lake City, and the city enforces permitting rigorously across residential, commercial, and infrastructure projects. The Herriman Building Department oversees all building permits, electrical subpermits, mechanical work, and inspections. Unlike some smaller Utah towns, Herriman doesn't offer broad exemptions for minor work — if you're making a structural change, adding square footage, or modifying utilities, you almost certainly need a permit.

The city sits in an interesting seismic and soil context. The Wasatch Fault runs nearby, which means the building code applies stricter seismic standards than the national baseline. Soil conditions include expansive clay from ancient Lake Bonneville sediments, which can shift under certain moisture conditions. Your frost depth ranges from 30 to 48 inches depending on elevation — that matters directly for deck footings, foundation depths, and fence posts. The city has adopted the current International Building Code (IBC) with Utah State amendments, so code language is familiar to contractors statewide.

Herriman also sits partly in climate zones 5B (Wasatch valley) and 6B (foothills), which affects insulation requirements, window specs, and HVAC sizing. The city's rapid growth means the Building Department is managing high permit volume — plan review timelines can stretch 4-6 weeks for complex projects, though simple permits often clear faster.

Owner-builders are permitted for owner-occupied residential work, but you'll still need the same inspections, plan review, and approvals as a licensed contractor would get. Skipping a permit isn't an option in Herriman — code enforcement is active, title companies will flag unpermitted work, and you'll face fines and forced tearout if caught.

What's specific to Herriman permits

Herriman's biggest permit quirk is soil and seismic. The city has adopted the 2015 IBC with Utah amendments, which includes specific requirements for expansive soils and seismic design. If you're pouring a foundation, setting deck posts, or building a retaining wall, the plan examiner will ask questions about soil bearing capacity and frost depth. Don't assume 'standard' — get a soil report if the project is substantial. The frost depth requirement ranges from 30 inches in lower elevations to 48 inches in the foothills; your inspector will verify which applies to your parcel. Frost heave is real in Utah winters, and footings that don't go deep enough fail predictably.

Seismic design is enforced in Herriman more strictly than in some other Utah towns because of Wasatch Fault proximity. This mostly affects commercial and large residential projects, but it means connectors, anchor bolts, and foundation details get scrutinized. If you're doing an addition or substantial remodel, the plan set will need to show lateral bracing and shear-wall connections. This isn't negotiable, and it's why cutting corners on structural drawings costs you time in plan review.

The city doesn't offer a robust online portal for real-time permit status tracking — you'll file in person at City Hall or by mail, and you'll need to call or visit to check progress. Email is hit-or-miss for responses. This is typical for mid-size Utah municipalities, but it means you can't rely on passive notifications. Plan check takes 3-6 weeks depending on the project complexity and current workload. Simple over-the-counter permits (like a fence under 6 feet or a water heater swap) can sometimes clear in a week or two, but assume 4 weeks for anything requiring structural review.

Herriman enforces setbacks and sight-triangle requirements strictly, especially for corner lots and projects near the Wasatch Fault hazard areas. Deck permits will require a site plan showing property lines, easements, and distance from property boundaries. Fence permits need the same. The city publishes a very specific setback schedule in the zoning ordinance; get a copy from the Planning Department before you assume you know where your fence can go. Violations here lead to stop-work orders and tearout — it's not worth the fight.

Owner-builders must pull permits under their own name but cannot install electrical, mechanical, or gas work themselves — those require licensed subcontractors with state licenses. The expectation is that an owner-builder oversees the overall project but contracts out the trades. You can do demolition, framing, finishing, and drywall yourself; you cannot do the systems. This is enforced at inspection, so don't try to hide unlicensed work. The Building Department keeps a list of licensed electricians, plumbers, and HVAC contractors if you need referrals.

Most common Herriman permit projects

These are the projects we see most often in Herriman. Each has its own quirks — frost depth, setbacks, soil requirements — and the city's soil and seismic context affects how quickly they get approved. Click through to see what's specific to your project.

Decks

Herriman requires a permit for any deck over 30 square feet or elevated more than 12 inches. Frost depth is the big variable — 30-48 inches depending on elevation. Most decks need posts set below frost, and the city will ask for soil and footing details in the plan set.

Fences

Fences over 6 feet tall or enclosing a pool always need permits. Corner-lot sight triangles are enforced strictly in Herriman due to traffic-safety requirements. Setback from property line is also checked — expect the plan examiner to require a survey or a precise site plan.

Roof replacement

Roof replacement requires a permit and inspection in Herriman — this is standard statewide. The inspector verifies deck sheathing, ventilation, and attachment per code. Seismic bracing of mechanical equipment on the roof is also checked.

Electrical work

Any electrical work — from a 20-amp circuit to a main panel upgrade — requires a subpermit filed by a licensed electrician. Solar installations require a separate electrical and structural permit, and Herriman will ask for a roof framing plan and seismic attachment details.

HVAC

Replacing a water heater or furnace requires a mechanical permit in Herriman. New ductwork, refrigerant lines, and gas connections all fall under the mechanical scope. Most swaps of like-for-like equipment are straightforward over-the-counter permits.

Room additions

Any addition or substantial remodel requires a full building permit with structural drawings, foundation plan, and seismic details. Herriman's plan examiners are thorough on seismic and soil — expect questions on lateral bracing and foundation depth.

Basement finishing

Finishing a basement in Herriman requires a permit because the city treats it as creating new habitable space. Egress windows are required (and code-sized), so budget for a window well and verification of the window size and sill height.

Do I need a building permit in Herriman, UT?