Can I build an ADU on my property in Spanish Fork?

ADUs are permitted in certain residential zones in Spanish Fork. Contact Community Development at (801) 804-4540 to confirm your property is eligible.

What are the size limits for an ADU in Spanish Fork?

Spanish Fork has minimum and maximum size requirements for ADUs based on the zone and primary dwelling size. Contact the Building Department for current standards specific to your property.

Accessory Dwelling Unit (ADU) Permit in Spanish Fork, Utah

Required for construction of an accessory dwelling unit on a residential property in Spanish Fork. Spanish Fork adopted ADU-friendly regulations to support housing growth.

Verified 2026-06-27 · Source

When you need this permit

Property must be in an eligible residential zone
Owner occupancy required for either the primary or accessory unit
ADU must meet minimum and maximum size requirements per city code
Adequate off-street parking must be provided

Required documents

Req
Building Plans
Construction drawings showing floor plan, elevations, and sections
Req
Site Plan
Showing ADU placement, setbacks, parking, and access
Req
Proof of Ownership
Deed or title showing property ownership
Req
Energy Compliance
REScheck or equivalent energy calculation

Fee schedule

Fee type	Amount	Notes
Building Permit	Based on ICC valuation table	—
Plan Review	65% of building permit fee	—
Impact Fees	Varies — contact city for current rates	—

Review timeline

14–28 business days

Typical plan review in Spanish Fork

Inspection process

1
Foundation
Before concrete pour — forms, rebar, anchor bolts
2
Framing
After framing, sheathing, and roof — before insulation
3
Insulation
After insulation installed, before drywall
4
Final
All work complete, ready for occupancy

Tips

Spanish Fork has been proactively updating its ADU ordinances — confirm current requirements before designing.
Both attached and detached ADUs are allowed in certain zones — verify with Community Development.
Impact fees for ADUs may be reduced compared to a standalone dwelling — ask the Building Department.

Frequently asked questions

Can I build an ADU on my property in Spanish Fork?: ADUs are permitted in certain residential zones in Spanish Fork. Contact Community Development at (801) 804-4540 to confirm your property is eligible.
What are the size limits for an ADU in Spanish Fork?: Spanish Fork has minimum and maximum size requirements for ADUs based on the zone and primary dwelling size. Contact the Building Department for current standards specific to your property.

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