2026 Home Remodeling: The Complete Guide – Part 4: Basements & ADUs : Turning Underutilized Space Into Income or the Ultimate Hangout
If you live in the Salt Lake Valley, you’re likely sitting on a hidden goldmine. I’m Mike Sansing, and over the years, Kristy and I have seen hundreds of basements that were nothing more than dark storage for holiday bins and old gym equipment. But in 2026, that square footage is your greatest asset.
Whether you want a "man cave" that actually feels like a luxury lounge or an Internal Accessory Dwelling Unit (IADU) to help pay the mortgage, this guide covers what you need to know to do it right.
The Utah IADU Revolution: What’s Changed?
Thanks to Utah’s HB 82, the rules for basement apartments have opened up significantly. In cities like Herriman, Riverton, and West Valley City, turning your basement into a long-term rental (30+ days) is now a "permitted use" for owner-occupied homes.
The state has capped parking requirements, meaning most cities can only ask for one additional off-street parking spot for your tenant. This is a game-changer for homeowners in tighter spots like Sandy or Salt Lake City proper.
Basement Finishing vs. Basement Apartment
There is a big difference between a "finished basement" and a "legal ADU."
Basement Finishing: Adding a bedroom, a bathroom, and a theater room. This adds comfort and home value.
IADU (Basement Apartment): This triggers specific code upgrades, including fire separation (fire-rated drywall on ceilings), interconnected smoke alarms, and often a separate entrance.
The Technical Non-Negotiables
Before we swing a hammer, we have to look at the "bones" of your project:
Egress Windows: These are non-negotiable for any basement bedroom. They must meet specific size requirements (usually 5.7 sq ft of openable area) to allow for emergency exit.
Ceiling Height: Most Utah codes require a 7'6" minimum for habitable spaces. If you have low-hanging ductwork, we may need to get creative with soffits.
Plumbing Rough-ins: Newer builds in Herriman and South Jordan usually come with rough-ins ready to go. Older homes in Bountiful or Magna might require concrete cutting to move drains: something we handle regularly.
Local Nuances Around the Valley
Every city has its quirks. In Herriman, we often deal with walk-out basements on sloped lots, which makes adding a separate entrance much easier. In Sandy, setback rules for any exterior modifications can be stricter. If you're in a historic area like Bountiful, we have to ensure any updates respect the character of the home while getting rid of those "outdated lighting" fixtures (standard glass domes) that make a basement feel like a dungeon.
The ROI Math: Why It Makes Sense
In the current Salt Lake Valley market, a well-finished basement apartment can command $800 to $1,500 per month in rental income. Even if you don't rent it out, a professionally finished basement typically offers one of the highest returns on investment for home resale value.
Who Should You Call?
For smaller basement refreshes, drywall repairs, or prepping an egress window, Your Handyman Pros is your go-to. If you are looking at a full-scale basement finish or a complete ADU conversion with plumbing, electrical, and HVAC zoning, that’s where our other branch, Your Contractor Pros, steps in to handle the full project management.
I am a licensed and insured contractor #12888335-5501. Whether the job is big or small, we take the frustration out of remodeling so you can actually enjoy your home.
For a deeper dive, check out our recent 5-part basement apartment series.
Coming up next in Part 5: We’re moving upstairs to talk about Whole-Home Smart Upgrades: how to make your home work harder for you in 2026.
Ready to reclaim your basement? Give me a call at 801-949-2376 for an estimate.
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