Basement apartment
Turn a finished or unfinished basement into a private, income-producing rental with its own entrance.
New law starts Oct 1, 2026 — Utah’s new ADU law is now in effect
ADU Builder in Lehi, Utah
Basement apartments, garage conversions, attached additions, and backyard cottages. We check what Lehi allows on your lot, handle the permits, and build it.
Free home review · Licensed & insured general contractor · Serving Lehi and Utah County
Lehi · ADU rules
What Lehi allows
Lehi was ahead of most of the county. It already allowed detached units before the state law passed, and the council adopted its updated ordinance in July 2026.
Ordinance adopted
Lehi adopted its updated detached ADU ordinance in July 2026. City staff estimated the change makes roughly 20% more Lehi properties eligible.
- A detached unit must sit at least 6 feet from the existing home
- The owner must live in either the main house or the ADU
- Before the new law, Lehi required a 14,520 sq ft lot; the state minimum is now 11,000 sq ft
- Lehi has capped detached unit size at 1,300 sq ft of finished living area
- One ADU per lot, internal or detached, not both
Older lots near downtown Lehi and larger parcels off the bench are the strongest candidates.
What ADUs rent for in Lehi
Estimated ranges by unit size. Actual rent depends on finish, location, and season.
Last checked September 2026. Cities are rewriting these rules right now. We confirm Lehi’s current ordinance, your zoning, HOA covenants, and utility capacity during your free home review, before you spend anything on design.
02 — What we build
Every type of ADU. One team to design, permit, and build.
Garage or shop conversion
Convert an existing detached garage or shop into a permitted, livable unit, often the fastest path to rent.
Attached addition
Add a self-contained living space onto your home with its own private entrance. Great for family.
Newly allowed on 11,000+ sq ft lots
Detached backyard cottage
A standalone home in your backyard, the type Utah’s new law opens up on larger lots.
03 — Home eligibility check
Check what your home qualifies for, free
Answer a few questions. We’ll tell you what’s likely allowed, then confirm everything with your city before you spend a dollar.
Your results appear here. Every answer is friendly. There’s almost always an option.
04 — Income calculator
Estimate what your home could earn
Pick your city, type, and size. Add financing to see your payment and monthly cash flow.
Your city
ADU type
Bedrooms
How you’d pay
Your current mortgage rate
This changes which option we recommend, not your payment.
Estimated monthly rent
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Project cost
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Payback
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Monthly payment
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Net cash flow
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10-year net cash flow, midpoint estimate
Estimates only. One ADU per lot. Payback is before taxes, insurance, and upkeep.
07 — Process
From home review to move-in ready
One team handles the whole thing: research, design, permits, and construction.
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01
Week 1
Free home review
We research your zoning, lot size, HOA, and utilities, then tell you exactly what your home allows, at no cost.
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02
Weeks 2–8
Design & permits
Floor plans, engineering, and every permit. We handle all the back-and-forth with your city.
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03
10–20 weeks
Build
Licensed crews handle site prep, framing, mechanical, electrical, plumbing, and finishes, inspected at every stage.
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04
Final week
Move-in ready
Final inspection, punch list, and a rent-ready unit handed off with permits closed out.
Free home review
Get your free home review
We’ll confirm what’s allowed on your lot and what it could earn, before you spend anything on design.
- We call you within 1 business dayQuick questions about your home and goals.
- We review your propertyZoning, lot, HOA covenants, and utilities.
- You get a clear recommendationThe best ADU type for your home and an estimate. No obligation.
Rather talk now? Call (435) 919-7275
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