Utah 2026 Building Code: A Wasatch Front Homeowner Guide

What HB 65 actually changed

HB 65 didn’t rewrite Utah’s building code from scratch. It updated the state from the 2021 model codes to the 2024 versions and locked in a handful of Utah-specific amendments. The key changes that affect Utah homeowners:

• ✓ Adopts the 2024 International Residential Code (IRC). This is the rulebook for one- and two-family homes up to three stories. New construction, remodels, and additions must comply.
• ✓ Adopts the 2024 International Energy Conservation Code (IECC). Tighter envelope requirements. Maximum fenestration (window) U-factor drops to 0.32. Maximum skylight U-factor capped at 1.2. New air-leakage testing requirements for certain projects.
• ✓ Adopts the 2024 International Existing Building Code. The rulebook for renovations, alterations, and additions to existing structures. This is where most homeowner work falls.
• ✓ Adopts the 2024 International Plumbing Code and Mechanical Code. New bathrooms, kitchens, and HVAC work must meet 2024 standards.
• ✓ Ballistic glass and security glazing formalized. References ASTM F3561 and ANSI Z97.1-15 (R20). Affects schools, government buildings, and some high-security residential applications.

The 2020 National Electrical Code (NEC) remains in effect for now. Utah typically lags the national NEC adoption by one cycle.

The biggest misconception: you don’t have to retrofit your existing home

If your home was built legally under the code in effect at the time, whether that was the 2000s, 90s, 80s, or earlier, you are not required to update anything just because the code changed in 2026. Your existing walls, wiring, plumbing, windows, and fixtures are grandfathered as legal nonconforming. You don’t have to replace your single-pane windows. You don’t have to upgrade your old electrical panel. You don’t have to tear out builder-grade fixtures.

The 2026 code applies to new work you do going forward. If you add a bathroom, that bathroom’s plumbing has to meet the 2024 IPC. If you finish a basement, the basement has to meet current egress and smoke detector requirements. If you replace your windows, the new windows have to meet the U-factor maximum. But the rest of the house stays as-is.

What now requires a permit in Utah (2026)

Utah uses the 2024 IRC’s permit framework, with local jurisdictions free to add stricter requirements. As a rough guide, the following types of work generally require a building permit in Salt Lake, Davis, Utah, Weber, Tooele, and Wasatch counties:

• ✓ Structural changes: Moving or removing walls (load-bearing or not, in most jurisdictions), adding rooms, changing roof structure, building additions.
• ✓ New electrical circuits: Adding a new circuit, installing a new panel, hardwiring fixtures into a new location. Replacing an existing fixture in an existing location usually does not require a permit.
• ✓ New plumbing lines: Adding a new sink, toilet, shower, or laundry connection. Replacing existing fixtures in existing locations generally does not require a permit.
• ✓ New gas lines: Adding a gas line for a range, dryer, or fireplace insert. Replacement of existing gas appliances usually doesn’t require permit but requires licensed installer.
• ✓ Basement finishing: Almost always permit-required. Egress window code, smoke detector code, and headroom requirements all apply.
• ✓ Decks above 30 inches off the ground: Permit required statewide. Lower decks may be exempt in some jurisdictions.
• ✓ Roof replacement: Permit required in most Wasatch Front jurisdictions, even for like-for-like replacement.
• ✓ Detached structures over 200 square feet: Sheds, detached garages, ADUs. Sub-200 sqft detached storage sheds are exempt from permit under IRC Section R105.2 (but check local).
• ✓ Window replacement that changes the rough opening: Same opening size like-for-like replacement is usually permit-exempt; structural changes trigger a permit.
• ✓ Mechanical (HVAC) installations: New furnace, AC, mini-split, or water heater always permit-required.

• ✓ Cosmetic work: paint, drywall patches, trim, baseboards, flooring (carpet, vinyl, hardwood overlay)
• ✓ Fixture replacement in existing location: faucet swap, light fixture swap, toilet swap, garbage disposal swap, ceiling fan swap where wiring exists
• ✓ Detached structures under 200 sqft (subject to local amendments)
• ✓ Decks under 30 inches off ground (subject to local)
• ✓ Cabinet replacement using existing layout
• ✓ Countertop replacement using existing layout
• ✓ Most tile and grout work
• ✓ Re-staining decks, fences, and exterior siding

Important: “Permit-exempt” does not mean “code-exempt.” Even when you don’t need a permit, the work still has to meet code. An inspector who finds non-code work during a future permit-pulled project or pre-sale inspection can require you to fix it at your cost.

Common Utah remodel scenarios, what the 2026 code requires

You want to remove the wall between your kitchen and living room. Even if the wall is non-load-bearing, this almost always requires a permit. Under the 2024 IRC adopted by HB 65, any new framing you add, beams, headers, posts, must meet current seismic and load-bearing standards. Utah’s seismic requirements are stricter than national average due to Wasatch Fault activity. The header sizing you’d have used in a 1990s remodel will not pass 2026 inspection. Get an engineer’s stamp for any load-bearing modification.

New plumbing means new code. The 2024 IPC governs vent sizing, trap arm length, drain slope, fixture spacing, water supply line sizing, and accessibility. Egress (any new bathroom counts as habitable space, no egress requirement, but ventilation IS required). Smoke detector interconnection (often required to be added throughout the home as a trigger condition). GFCI and AFCI protection (2020 NEC requirements apply).

This is one of the most common Utah remodels and one of the most heavily code-regulated. Requirements typically include: egress window in every sleeping room (5.7 sq ft minimum opening, sill no higher than 44 inches from floor), smoke detectors interconnected throughout the home, carbon monoxide detector outside sleeping areas, minimum 7-foot ceiling height (with limited exceptions for beams/ducts), interior staircase code (rise/run, handrail, lighting), GFCI outlets in any wet areas, and proper insulation per the 2024 IECC.

Like-for-like window replacement (same rough opening size, same operation type) is permit-exempt in most Wasatch Front jurisdictions, but the new windows must meet the 2024 IECC fenestration U-factor maximum of 0.32. That rules out most builder-grade single-pane and many older double-pane units. If you change the rough opening size, making a window bigger or smaller, you need a permit because that’s structural.

Permit required in all Wasatch Front jurisdictions, even for like-for-like replacement. Reason: the water heater connection involves both gas (or electrical) AND plumbing, both of which fall under permit jurisdiction. Use a licensed installer. The 2024 IRC also requires expansion tank installation on closed plumbing systems, drip pan with drain line, and seismic strapping (two straps, upper and lower third). Older installations didn’t meet these standards.

Permit required in most Wasatch Front jurisdictions even for tear-off and like-for-like replacement. The 2024 IRC has updated underlayment and ice-and-water-shield requirements for cold climates. Wasatch Front qualifies. Inspector wants to see the deck before new material is installed.

If above 30 inches off the ground, permit required. The 2024 IRC adopted by HB 65 includes the prescriptive Deck Construction Guide (DCA-6 reference), which gives builders permission to skip an engineer’s stamp if they follow the prescribed beam spans, joist spans, ledger attachments, and footing depths exactly. Stay within DCA-6 to skip the engineer. Step outside DCA-6 (cantilevers, unusual loads, structural attachment to existing structure where ledger details don’t apply), engineer required.

Handyman vs. licensed contractor under the 2026 code

Utah’s licensing thresholds are independent of the building code, but they intersect in important ways. Under Utah Code Title 58, Chapter 55:

• ✓ Projects valued at $3,000 or less: No license or registration required. Pure handyman scope.
• ✓ Projects valued $3,001 – $7,000: One-time affirmation required with the Utah Division of Professional Licensing (DOPL). Must carry insurance.
• ✓ Projects over $7,000: Full DOPL contractor license required.

The 2026 building code update doesn’t change these thresholds, but it does change what kinds of work require a permit (and therefore typically require a licensed contractor regardless of dollar value). Permit-pulled work usually requires a licensed contractor to take responsibility for the work on record with the city. Even a $1,200 plumbing job that requires a permit (like adding a new toilet rough-in) generally needs a licensed plumber or general contractor, not a handyman.

The practical rule: permit-required work needs a licensed contractor regardless of dollar value. Permit-exempt work under $3,000 can be handled by a handyman.

Permit pulling: how it actually works in the Wasatch Front

Each Wasatch Front jurisdiction handles permits slightly differently. We have detailed county-specific guides covering local permit rules, fees, and online portals: Salt Lake County · Davis County · Utah County · Weber County · Tooele County · Wasatch County. The general process:

• ✓ Determine which jurisdiction has authority over your address (often city, sometimes county). For unincorporated areas of Salt Lake County, that’s the Salt Lake County Building Services. For Holladay, that’s Holladay City. For Park City, that’s Park City Municipal.
• ✓ Submit a permit application with project drawings (often required), site plan, and contractor information (DOPL number).
• ✓ Pay permit fees. Vary widely: a window replacement permit might cost $50-150. A basement finish permit can cost $400-1,200 depending on valuation.
• ✓ Wait for plan review. Simple permits: same-day to 1 week. Complex permits: 2-6 weeks.
• ✓ Have inspections performed at required stages (typically: footing, framing, rough-in mechanical/electrical/plumbing, insulation, final).
• ✓ Receive certificate of occupancy or final approval when work is complete.

Skipping the permit process to “save time” is a common temptation. Don’t. Unpermitted work shows up on pre-listing inspections, kills sales, and can trigger forced removal of the work. The cost of a $400 permit is always less than the cost of having to rip out and redo unpermitted work for a buyer’s lender.

What this means for pre-listing repairs

Sellers preparing to list a Wasatch Front home in 2026 need to know: any work you do to get ready to sell must meet 2026 code if it’s permit-required. If you finish your basement to add a bedroom to your listing, that bedroom has to meet 2026 egress and smoke detector requirements. If you add a bathroom to boost value, that bathroom has to meet 2024 IPC.

For most pre-listing scopes, this doesn’t change much: paint, fixture swaps, cosmetic repairs, and deferred maintenance are all permit-exempt. But sellers who want to add square footage, finish unfinished space, or make structural changes need to budget for permit fees, longer timelines, and licensed contractor pricing.

Not sure if your project needs a permit?

Send us photos or video. We’ll tell you straight whether your project needs a permit under the 2026 code, whether it needs a licensed contractor, and what it’ll cost. Same business day response. Free, no commitment.

About Handyman Jacks

Licensed Utah General Contractor (DOPL #14195166-5501). Fully insured. The HMJ team handles permit-exempt residential repairs directly and coordinates with licensed sub-contractor partners for permit-required scope. Owner Kris Bowen is also a Utah real estate broker, which gives the team a useful perspective on which 2026-code-triggered repairs are worth doing before listing a home versus which ones aren’t.

This guide reflects the 2026 Utah construction code as adopted under HB 65, effective July 1, 2026. Local amendments vary by jurisdiction. Final permit decisions belong with your local building department. Updated June 2026; next refresh September 2026.