ADUByCity
Verified March 14, 2026

ADU Regulations in Santa Clarita, California

Los Angeles County · CA · Pop. 230,000

Max ADU Size

1,200

sq ft detached

Rear Setback

4 ft

Permit Timeline

60 days

Build Cost

$150,000 – $320,000

Zoning

Allowed ADU Types

✓Detached ADU
✓Attached ADU
✓JADU (Junior ADU)
✓Garage Conversion
Max per lot: 2 ADUs✓ No owner-occupancy required

ADUs allowed on all residential lots per state law; hillside lots may have additional slope restrictions

Source: City of Santa Clarita — ADU Information · Santa Clarita Municipal Code Section 17.36

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 zone; hillside overlay may restrict total coverage

Santa Clarita has fire hazard severity zones — fire-rated construction materials may be required

Permitting

Permit Process

Department

Santa Clarita Community Development

Review Timeline

60 days

Permit Fees

$7,000 – $16,000

Impact Fees

School fees apply for ADUs over 500 sq ft; impact fees waived under 750 sq ft

Required Documents

  • ›Site plan
  • ›Floor plans
  • ›Elevations
  • ›Title 24 energy compliance
  • ›Soils/geological report if on hillside
  • ›Structural drawings

Fire hazard zone construction adds cost but is well-understood by local contractors

Visit Santa Clarita Community Development →

Infrastructure

Utilities & Requirements

Solar

Required

Parking

Not required

Separate Meter

Optional

Fire Sprinklers

See note

Sewer: Connect to existing sewer; Valencia Water Company or Newhall County Water District
Fire Sprinklers: May be required in high fire hazard zones; verify with fire department
Parking: No additional parking required

Financials

ADU Costs in Santa Clarita

Typical Build Cost

$150,000 – $320,000

Cost per Sq Ft

$210 – $290

Monthly Rental

$1,700 – $2,800/mo

Property Value Added

Adds $150,000 – $280,000 to property value

Available Grants & Programs

  • ★CalHFA ADU Grant Program available

Fire zone construction requirements add 10–20% to build cost vs standard lots

Use the free ADU Cost Calculator →

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Disclaimer: Information is compiled from publicly available municipal codes for general informational purposes only. It does not constitute legal, zoning, or construction advice. Regulations change frequently. Always verify with your local planning department. Last verified: March 14, 2026. Verify with Santa Clarita Community Development

Explore More

Nearby Cities in Los Angeles County

Los Angeles

Max 1,200 sq ft · $150,000 – $450,000

Long Beach

Max 1,200 sq ft · $150,000 – $420,000

Glendale

Max 1,200 sq ft · $160,000 – $370,000

Palmdale

Max 1,200 sq ft · $130,000 – $270,000

Lancaster

Max 1,200 sq ft · $120,000 – $250,000

Pomona

Max 1,200 sq ft · $140,000 – $290,000

Santa Clarita Quick Facts

  • Max size1,200 sq ft
  • Rear setback4 ft
  • Permit timeline60 days
  • Build cost$150,000 – $320,000
  • Rental income$1,700 – $2,800/mo
  • Owner occupancyNot required

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Official Source

City of Santa Clarita — ADU Information

Santa Clarita Municipal Code Section 17.36

Last verified: March 14, 2026

Free Tools

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ADU rules change often.

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