This Orem ADU guide helps homeowners understand local ADU rules, likely cost ranges, permit considerations, and builder options before requesting quotes. Start with a free property check to see whether your Orem property may be a fit for an internal ADU, basement ADU, garage conversion, attached ADU, or detached ADU.
ADU Rules in Orem, Utah
Last verified: January 2026 · Always confirm with Orem before design or construction.
| Internal / attached ADU | Permitted under current Orem code (subject to zoning) — verify with Orem |
|---|---|
| Detached ADU (today) | Not listed as permitted in our current Orem dataset — verify with Orem before design or construction |
| Garage conversion | Permitted under current Orem code (subject to zoning) — verify with Orem |
| Maximum ADU size | Up to 800 sq ft |
| Minimum lot size | 6,000 sq ft |
| Parking | One additional off-street space required |
| Owner occupancy | Required |
| Short-term rental use | Not allowed |
| Permit path | 4-8 week review · est. permit fee $2,500 - $5,000 · est. impact fee $2,000 - $4,000 |
| Utah state law | Internal ADUs in single-family zones are governed by Utah Code §10-21-303 (formerly §10-9a-530). |
| Official source | Orem City Municipal Code |
2026 detached ADU law: Under Utah Code §10-21-304 (effective Oct. 1, 2026), qualifying municipalities must permit a detached ADU on a lot of at least 11,000 sq ft that has a single-family dwelling, subject to listed local restrictions. Whether your Orem property qualifies depends on lot size, zone, and city implementation — verify with Orem before relying on it.
Why Orem Homeowners Choose Utah ADU Builders
Local Expertise
Builder partners understand Orem's unique ADU zoning requirements including setback requirements, height restrictions, and design standards specific to Orem. A streamlined permit process and strong local relationships with Orem building departments ensure efficient project approvals.
Proven Track Record
Builder partners have completed multiple ADU projects in Orem, including detached ADU construction and garage conversion builds. Construction timelines vary by project complexity and scope. Orem clients may experience property value considerations.
Special Orem Offer
Free ADU permit handling for Orem residents
Free permit handling service when you start your Orem ADU project this quarter. Includes zoning compliance and building department coordination.
ADU Services Available in Orem
Choose the perfect ADU solution for your Orem property. All services include full permit handling and compliance with Orem zoning requirements.
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