ADU Construction in Cache Valley & Logan, Utah
An accessory dwelling unit — ADU — is one of the smartest investments a Cache Valley homeowner can make right now. Whether you're adding rental income, housing a family member, or increasing your property's long-term value, Salt to Summit Construction & Renovation manages the entire ADU process from eligibility review through final inspection.
We're a licensed Utah general contractor based in Logan. We know Cache Valley's ADU rules, we've navigated the local permitting process, and we build ADUs that are code-compliant, well-constructed, and designed to work for how you actually plan to use the space.
Start With a Quick Conversation
Tell us about your property, your intended use, and your goals — and we'll follow up with a realistic picture of what's possible and what it would cost. Most homeowners hear back within one business day.
ADUs in Cache Valley — What Changed in 2024
Logan City passed Ordinance 24-18 in October 2024, significantly expanding what's allowed for ADU construction within city limits. The update was a major shift from the previous 2021 ordinance and opened up new options for Logan homeowners.
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ADUs are now permitted city-wide in Logan — including in the area near Utah State University that was previously excluded
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All ADU types are now allowed — internal conversions, external additions, and detached structures
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The minimum lot size restriction for external ADUs was removed
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Height limit for external ADUs is capped at the height of the primary dwelling or 20 feet, whichever is more restrictive
Owner-occupancy is still required — you must live in either the primary home or the ADU as your primary residence. Each city and municipality in Cache Valley has its own ADU rules, so eligibility depends on your specific address and jurisdiction. We check all of this upfront before any work begins.
Types of ADUs We Build
Basement Conversions
Convert your unfinished or underused basement into a self-contained rental suite or in-law apartment with its own entrance, kitchen, bathroom, and living space.
Garage Conversions
Transform an attached or detached garage into a fully habitable ADU. Includes insulation, electrical, plumbing, HVAC, and all finish work to bring it up to residential code.
Detached Backyard Units
A standalone structure on your property — maximum privacy for tenants or family members. Built from the ground up with its own foundation, utilities, and full living amenities.
External Additions
An ADU built as an extension of your existing home — above a garage, off the back of the house, or as a second story addition with a separate entrance.
Why Cache Valley Homeowners Are Building ADUs
Rental income
A finished basement apartment or detached unit can generate monthly rental income that offsets your mortgage or funds the ADU build itself over time.
Multi-generational living
House aging parents, adult children, or extended family with privacy and independence — without anyone having to move across town.
Property value
An ADU adds usable square footage and income potential — two of the highest-value factors in any home appraisal or resale scenario.
Guest space
A private, self-contained space for guests that doesn't take over your main living areas — with the flexibility to rent it when it's not in use.
Our ADU Construction Process
Eligibility & ballpark call
We start by confirming your property's eligibility — jurisdiction, zoning, lot size, owner-occupancy status, and ADU type — before we talk numbers. No point scoping a project on a property that doesn't qualify. If you're eligible, we discuss your goals and give you a realistic cost range on the call.
Site assessment & design
We visit your property, assess the existing structure and site conditions, and develop a design that balances your goals, your budget, and what your jurisdiction will approve. Every decision is documented before construction starts.
Permitting & approvals
ADU permitting in Cache Valley involves multiple steps — building permit application, plan review, zoning compliance, and in some cases a Declaration of Owner Occupancy. We handle all of it and track the application through every stage of the review process.
Construction & inspections
Foundation or framing, mechanicals, insulation, drywall, kitchen and bathroom installation, flooring, and finish work — each phase inspected before moving forward. You're updated throughout so there are no surprises at the end.
Final inspection & occupancy
We coordinate the final inspection with the relevant building department, complete any punch-list items, and hand off a finished ADU that's ready for occupancy or rental from day one.
ADU Questions from Cache Valley Homeowners
How much does it cost to build an ADU in Utah?
ADU costs in Utah range significantly by type. Basement and garage conversions — where the structure already exists — typically run $80,000 to $150,000 depending on scope and finish level. External additions and detached new-construction units cost more, generally $150,000 to $250,000+ for attached units and $200,000 to $400,000+ for fully detached structures built from the ground up. The ballpark call is where we give you a number specific to your property and project type.
Do I qualify for an ADU in Logan, Utah?
Following the 2024 ordinance update, ADUs are permitted city-wide in Logan for owner-occupied, single-family properties. You must live in either the primary home or the ADU as your primary residence. Rules vary by city across Cache Valley — North Logan, Providence, Hyde Park, and other municipalities each have their own ADU ordinances. We determine your eligibility based on your specific address before anything else.
Can I rent out my ADU in Logan?
Yes — long-term rentals of 30 days or more are permitted under Logan City's ADU rules as long as owner-occupancy requirements are met. The 2024 ordinance update also removed the previous prohibition on short-term rentals in ADUs, though STR rules in Logan have their own separate regulations around distance, licensing, and density. We recommend confirming your intended rental use with the city before building if short-term rental income is part of your plan.
How long does it take to build an ADU?
Timeline depends heavily on ADU type and permitting. A basement or garage conversion typically takes 10 to 16 weeks from permit approval to final inspection. A detached new-construction unit runs 20 to 32 weeks. Permitting itself adds 2 to 6 weeks depending on jurisdiction and plan review load. We build a realistic timeline into every project scope so you can plan around it.
What's included in a full-service ADU build?
Our ADU service covers eligibility review, design, permit application and tracking, all construction phases — framing, mechanical rough-ins, insulation, drywall, kitchen and bathroom installation, flooring, trim, and finish carpentry — and final inspection coordination. You work with one contractor from first call to occupancy.
Why Cache Valley Homeowners Choose Salt to Summit
Licensed & Insured
Fully licensed Utah general contractor. Every ADU is permitted, inspected, and built to code.
Eligibility First
We check your address, jurisdiction, and zoning before scoping anything. No wasted time on properties that don't qualify.
Full Permit Management
ADU permitting is complex in Cache Valley. We handle every step — application, plan review, inspections, and occupancy coordination.
One Team, Start to Finish
You work with us from eligibility check through final inspection. No handoffs, no gaps, no confusion about who's responsible for what.
ADU Construction Across Cache Valley & Northern Utah
We build ADUs throughout Cache County including Logan, North Logan, Providence, Smithfield, Hyde Park, Nibley, Hyrum, Millville, and Wellsville, as well as communities in Box Elder, Weber, Davis, and Salt Lake Counties. ADU rules vary by city — we confirm eligibility for your specific address before any work begins.