How big can an ADU be in Chula Vista?

Detached ADUs in Chula Vista can be up to 1,200 sq ft. Attached ADUs: 50% of primary home, max 1,200 sq ft. JADUs up to 500 sq ft.

How much does it cost to build an ADU in Chula Vista?

Build costs typically range $140,000 – $300,000, or $200 – $280 per square foot.

Verified March 14, 2026

ADU Regulations in Chula Vista, California

Q: What are the setback requirements for ADUs in Chula Vista?

Front: Same as primary dwelling. Side: 4 ft. Rear: 4 ft.

San Diego County · CA · Pop. 285,000

Max ADU Size

1,200

sq ft detached

Rear Setback

4 ft

Permit Timeline

60 days

Build Cost

$140,000 – $300,000

Zoning

Allowed ADU Types

✓Detached ADU

✓Attached ADU

✓JADU (Junior ADU)

✓Garage Conversion

Max per lot: 2 ADUs✓ No owner-occupancy required

ADUs permitted by-right per California state law; ministerial approval only

Source: City of Chula Vista — Accessory Dwelling Units · Chula Vista Municipal Code Section 19.58.022

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

ADUs within 0.5 miles of transit have additional flexibility

Permitting

Permit Process

Department

Chula Vista Development Services

Review Timeline

60 days

Permit Fees

$6,000 – $13,000

Impact Fees

Impact fees waived for ADUs under 750 sq ft

Required Documents

›Site plan to scale
›Architectural plans
›Elevations
›Title 24 energy compliance
›Structural drawings (new construction)

Chula Vista accepts digital permit applications online

Visit Chula Vista Development Services →

Infrastructure

Utilities & Requirements

Solar

Required

Parking

Not required

Separate Meter

Optional

Fire Sprinklers

See note

Sewer: Connect to existing sewer; Sweetwater Authority or Otay Water District depending on area

Fire Sprinklers: Not required unless primary dwelling has them

Parking: No parking required when converting garage or within transit area

Financials

ADU Costs in Chula Vista

Typical Build Cost

$140,000 – $300,000

Cost per Sq Ft

$200 – $280

Monthly Rental

$1,600 – $2,700/mo

Property Value Added

Adds $140,000 – $270,000 to property value

Available Grants & Programs

★CalHFA ADU Grant Program for qualifying homeowners

Chula Vista's newer neighborhoods (Otay Ranch) have many suitable lots for ADUs

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 Chula Vista Development Services

Explore More

Nearby Cities in San Diego County

San Diego

Max 1,200 sq ft · $160,000 – $480,000

Oceanside

Max 1,200 sq ft · $160,000 – $330,000

Escondido

Max 1,200 sq ft · $155,000 – $320,000

Carlsbad

Max 1,200 sq ft · $175,000 – $360,000

El Cajon

Max 1,200 sq ft · $150,000 – $305,000

Vista

Max 1,200 sq ft · $150,000 – $305,000

Chula Vista Quick Facts

Max size1,200 sq ft
Rear setback4 ft
Permit timeline60 days
Build cost$140,000 – $300,000
Rental income$1,600 – $2,700/mo
Owner occupancyNot required

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Official Source

City of Chula Vista — Accessory Dwelling Units

Chula Vista Municipal Code Section 19.58.022

Last verified: March 14, 2026

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ADU rules change often.

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