Cache County · 11,727 residents
North Logan ADU rules
North Logan: internal ADUs allowed; detached ADUs allowed. Owner occupancy applies.
Internal ADU (inside the home)
Detached ADU (backyard building)
✓ Checked against city sources on September 24, 2026 See sources
North Logan ADU rules at a glance
| Rule | Internal ADU (basement, attic, inside the home) | Detached ADU (backyard building) |
|---|---|---|
| Allowed? | Allowed | Allowed |
| Minimum lot | Not yet verified — confirm with the city | North Logan's code does not set a separate minimum lot size for ADUs; a detached ADU is allowed on lots in the agricultural, residential estate and single-family zones (and the RB zone). Lots on septic need Bear River Health Department approval first. |
| Owner occupancy | The owner must live in either the main house or the ADU (except for bona fide absences) and must record a restrictive covenant saying so. | The lot must be owner-occupied: the owner lives in the main house or the ADU except for bona fide absences, and records a restrictive covenant on the title. |
| Parking | One paved off-street space for the ADU, in addition to the two spaces required for the main house. | Two paved off-street spaces for the detached ADU, in addition to the two spaces required for the main house. |
| Size limits | Not yet verified — confirm with the city | No more than 50% of the main home's footprint (including an attached garage), up to 1,250 sq ft; if the living space sits entirely above a garage, the whole structure can be up to 2,500 sq ft. Accessory buildings and detached ADUs together may cover no more than 25% of the rear yard. |
| Height | Not yet verified — confirm with the city | Up to 35 ft in the RE and R-1 zones (may be further limited near the airport). |
| Setbacks | An internal ADU that expands the home's footprint must meet the main-house setbacks for the zone. | Uses the accessory-building setbacks for the zone; in the RE and R-1 zones, accessory buildings at least 10 ft behind the house may be 6 ft from side and rear lot lines (20 ft on a corner street side). |
| Zones | Permitted in the A1-10, RE-1, RE-2, RE-5, R-1-10, R-1-12, R-1-15, R-1-20 and R-1-30 zones and the RB zone; not allowed in the RM zone. Only one ADU (internal or detached) per lot. | Permitted in the A1-10, RE-1, RE-2, RE-5, R-1-10, R-1-12, R-1-15, R-1-20 and R-1-30 zones and the RB zone; not allowed in the RM zone. Only one ADU (internal or detached) per lot; trailers and mobile homes cannot be used. |
| Short-term rentals | Short-term rentals (30 days or less) require a conditional use permit from the Planning Commission in residential zones. | Short-term rentals require a conditional use permit from the Planning Commission; the Planning Commission has reviewed such a permit for an existing detached ADU. |
| Permit process | Requires a zoning clearance and a building permit, with a scaled floor plan and site plan and architectural renderings; the owner records a restrictive covenant on the property title. The ADU shares the main home's water meter and sewer line and gets one city utility bill. | Requires a zoning clearance and a building permit, with a scaled floor plan and site plan and architectural renderings showing the design matches the main house; the owner records a restrictive covenant on the title. The ADU shares the main home's water meter and sewer line. |
State law: detached ADUs from October 1, 2026
North Logan is a “specified municipality” under Utah S.B. 284. Beginning October 1, 2026, it must permit one detached ADU as a permitted use on a lot of 11,000 sq ft or more that has a detached single-family home. The city can still apply setbacks, height, design, owner-occupancy and limited parking rules, and it may allow detached ADUs on smaller lots. How the state ADU laws work.
How our property map screens North Logan lots
The map colors parcels using the rules on this page and the recorded lot size. A color is a planning screen, not a permit; North Logan makes the decision.
- No numeric external minimum is recorded for North Logan. The map keeps the statewide 11,000 sq ft external screen and shows the researched status (generally allowed) on the property report.
- "Likely" above 15,000 sq ft is this site's planning band for a large recorded lot. It is not a sentence in the North Logan code. Owner occupancy, parking, setbacks, zones, and HOA rules below still have to be checked.
Planned communities, PRDs and PUDs
Reviewed on September 22, 2026 against this city's research file, its published ADU page where one was found, and Utah meeting packets. No adopted sentence was confirmed that allows or bans an ADU in every PUD, PRD, PRUD, or planned community. If the assessor class or subdivision name says PUD, PRD, PRUD, planned unit development, planned residential development, planned community, resort community, or master planned community, the map keeps that lot highly unlikely regardless of size. A plat, CC&Rs, or development agreement can still prohibit an ADU where the zone allows one.
Sources
We link only to government sources and public meeting records. Codes change; confirm the current version with North Logan before you apply.
- U.S. Census Bureau — Vintage 2024 population estimates, Utah incorporated places
July 1, 2024 population estimates for the city and Cache County (145,487).
- Utah Code 17-60-104 — Classification of counties
A county with 40,000 to 259,999 people is a county of the third class; Cache County (145,487) is third class.
- Utah Code 10-2-301 — Classification of municipalities
City class population thresholds.
- Utah S.B. 284 (2026) enrolled — Utah Code 10-21-304 detached ADUs
Specified municipalities must permit a detached ADU on lots of 11,000 sq ft or more with a single-family home, effective Oct 1, 2026; caps detached-ADU parking at 1 space (<650 sq ft) or 2 spaces (650+ sq ft).
- North Logan Planning Commission agenda — Sept 4, 2025 (Utah Public Notice)
Conditional use permit review for a short-term rental inside an existing detached ADU (CUP-2025-03).
- North Logan City — Building Permits & Inspections
City building permit page (ADU rules themselves are in municipal code 12C-221).
- Official North Logan website
Common North Logan ADU questions
Can you build an ADU in North Logan?
North Logan: internal ADUs allowed; detached ADUs allowed. Owner occupancy applies. This is planning guidance, not a permit. Confirm the zone on your parcel with North Logan.
What lot size does North Logan require for an ADU?
Internal ADU: Not yet verified — confirm with the city. Detached ADU: North Logan's code does not set a separate minimum lot size for ADUs; a detached ADU is allowed on lots in the agricultural, residential estate and single-family zones (and the RB zone). Lots on septic need Bear River Health Department approval first.
Does North Logan require the owner to live on the property?
Internal ADU: The owner must live in either the main house or the ADU (except for bona fide absences) and must record a restrictive covenant saying so. Detached ADU: The lot must be owner-occupied: the owner lives in the main house or the ADU except for bona fide absences, and records a restrictive covenant on the title.
How much parking does a North Logan ADU need?
Internal ADU: One paved off-street space for the ADU, in addition to the two spaces required for the main house. Detached ADU: Two paved off-street spaces for the detached ADU, in addition to the two spaces required for the main house.
Can an ADU in North Logan be a short-term rental?
Internal ADU: Short-term rentals (30 days or less) require a conditional use permit from the Planning Commission in residential zones. Detached ADU: Short-term rentals require a conditional use permit from the Planning Commission; the Planning Commission has reviewed such a permit for an existing detached ADU.
What does it cost to build an ADU in North Logan?
Wasatch Front planning bands are often about $55,000–$145,000 for an internal suite, $70,000–$175,000 for a garage conversion, and $95,000–$250,000 or more for a new detached unit, before unusual site work. These are planning ranges, not bids.
Can an HOA block an ADU in North Logan?
City approval does not override CC&Rs or plat notes. Read the HOA documents and your subdivision plat before you design. A private restriction can stop a unit the city would otherwise allow.
Before you design: general checks for any Utah ADU
General planning advice, not North Logan code.
- Confirm the zoning district on the city zoning map. The county assessor’s “residential” class is not zoning.
- Read your HOA CC&Rs and subdivision plat notes; private restrictions can block a unit the city allows.
- Sketch existing and proposed parking. Driveway geometry and access often decide what fits.
- Ask early about sewer, water and electrical capacity; utilities can force a redesign.
- Expanding a building’s footprint usually triggers full setback and height rules.
Nearby city ADU rules
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Utah ADU Builder provides educational planning guidance. This page is not legal advice and not a permit. Population: U.S. Census Bureau population estimate (2024). Editorial standards.