ADU Regulations in Santa Cruz, California
Santa Cruz County · CA · Pop. 65,000
Max ADU Size
1,200
sq ft detached
Rear Setback
4 ft
Permit Timeline
60 days
Build Cost
$195,000 – $395,000
Zoning
Allowed ADU Types
Santa Cruz has an active ADU program designed to address its severe housing shortage, driven in large part by the presence of UC Santa Cruz. The city actively encourages ADU construction and has streamlined its application process. Some coastal properties near the beach may be subject to California Coastal Act review.
Source: City of Santa Cruz — Planning and Community Development · Santa Cruz Municipal Code Chapter 24.16
Dimensions
Size & Setback Requirements
Detached
1,200
sq ft max
JADU
500
sq ft max
Attached
50% of primary home, max 1,200 sq ft
Setbacks
front
Same as primary dwelling
side
4 ft
rear
4 ft
Max height: 16 ft
Lot coverage: Per underlying zone
Santa Cruz's hillside topography and tree canopy may affect siting options for detached ADUs on some lots. The city has pre-approved standard ADU plans available to reduce design costs and accelerate permitting. Coastal properties should verify Coastal Zone boundaries before design.
Permitting
Permit Process
Department
Planning and Community Development Department
Review Timeline
60 days
Permit Fees
$9,000 – $18,000
Impact Fees
Impact fees waived under 750 sq ft
Required Documents
- ›Site plan
- ›Floor plans
- ›Elevations
- ›Title 24 energy compliance
- ›Structural drawings
- ›Tree impact assessment (if applicable)
Santa Cruz has one of the most active ADU programs on the Central Coast and offers pre-approved plan sets to expedite permitting. Higher permit fees reflect the city's premium coastal market and infrastructure costs. The city has publicly committed to reducing barriers to ADU construction as part of its housing element.
Visit Planning and Community Development Department →Infrastructure
Utilities & Requirements
Solar
Required
Parking
Not required
Separate Meter
Optional
Fire Sprinklers
See note
Financials
ADU Costs in Santa Cruz
Typical Build Cost
$195,000 – $395,000
Cost per Sq Ft
$265 – $345
Monthly Rental
$1,900 – $3,100/mo/mo
Property Value Added
Adds $230,000 – $430,000 to property value
Available Grants & Programs
- ★CalHFA ADU Grant Program available
UC Santa Cruz generates extraordinary student and faculty rental demand that pushes rents well above comparable inland markets. Coastal access and lifestyle amenities support premium rents even for long-term tenants. ADU returns in Santa Cruz are among the strongest per-dollar-invested on the Central Coast.
Use the free ADU Cost Calculator →Free Service
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Santa Cruz Quick Facts
- Max size1,200 sq ft
- Rear setback4 ft
- Permit timeline60 days
- Build cost$195,000 – $395,000
- Rental income$1,900 – $3,100/mo/mo
- Owner occupancyNot required
Official Source
City of Santa Cruz — Planning and Community DevelopmentSanta Cruz Municipal Code Chapter 24.16
Last verified: March 14, 2026
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