What is the maximum ADU size allowed in Pasadena?

Detached ADUs in Pasadena can be up to 1200 square feet.

ADU Builders & Contractors in Pasadena, CA

Q: How much does it cost to build an ADU in Pasadena?

The average cost ranges from $140,000 to $315,000, or $190-365 per square foot.

Q: How long does it take to get an ADU permit in Pasadena?

The permit process typically takes 60 to 120 weeks in Pasadena.

With 376 verified ADU contractors serving Pasadena, CA, homeowners have plenty of options for their accessory dwelling unit project. Local contractors ready to help specialize in everything from design-build to permit navigation.

📊 ADU Quick Facts for Pasadena

Avg. Cost/sqft

$190-$365

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 376 ADU Contractors in Pasadena

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#1HARRINGTON JAN

Pasadena, CA

Harrington Jan — licensed ADU contractor in Pasadena, CA. Detached ADU construction. 5+ years experience.

View Profile 📞 (626) 786 2806

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#2LIVE ROCK CONSTRUCTION

Pasadena, CA

Live Rock Construction — licensed ADU contractor in Pasadena, CA. Detached ADU construction. 13+ years experience.

View Profile 📞 (626) 665 3917

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#3SIMPSON CONSTRUCTION AND DEVELOPMENT COMPANY

Pasadena, CA

Simpson Construction And Development Company — licensed ADU contractor in Pasadena, CA. Detached ADU construction. 21+ years experience.

View Profile 📞 (951) 473 6804

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#4DTP BUILDERS

Pasadena, CA

Dtp Builders — licensed ADU contractor in Pasadena, CA. Detached ADU construction.

View Profile 📞 (213) 534 7611

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#5HSIEH STEVEN

Pasadena, CA

Hsieh Steven — licensed ADU contractor in Pasadena, CA. Detached ADU construction. 20+ years experience.

View Profile 📞 (626) 704 5620

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#6SIGNATURE CONSTRUCTION

Pasadena, CA

Signature Construction — licensed ADU contractor in Pasadena, CA. Detached ADU construction. 18+ years experience.

View Profile 📞 (818) 269 9854

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#7KWANUNDRUM BUILDER

Pasadena, CA

Kwanundrum Builder — licensed ADU contractor in Pasadena, CA. Detached ADU construction. 16+ years experience.

View Profile 📞 (626) 975 9754

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#8WALLERSTEIN CONSTRUCTION CO

Pasadena, CA

Wallerstein Construction CO — licensed ADU contractor in Pasadena, CA. Detached ADU construction. 24+ years experience.

View Profile 📞 (626) 578 5431

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#9FIELDS GENERAL CONTRACTING

Pasadena, CA

Fields General Contracting — licensed ADU contractor in Pasadena, CA. Detached ADU construction. 45+ years experience.

View Profile 📞 (626) 354 2739

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#10ALL IN ONE CONSTRUCTION

Pasadena, CA

All IN One Construction — licensed ADU contractor in Pasadena, CA. Detached ADU construction. 37+ years experience.

View Profile 📞 (626) 793 1763

View All 376 Contractors →

💰 How Much Does an ADU Cost in Pasadena?

Garage Conversion

$65,000 - $125,000

Converting existing garage to living space

Detached ADU

$140,000 - $315,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,097 - $5,097

Plan check, permits, utility connections

* Costs vary based on size, finishes, site conditions, and contractor. Get quotes from multiple Pasadena contractors to compare pricing.

❓ Frequently Asked Questions About ADUs in Pasadena

How much does it cost to build an ADU in Pasadena?▼

The average cost to build an ADU in Pasadena ranges from $140,000 to $315,000, or approximately $190 to $365 per square foot. Garage conversions typically cost $65,000 to $125,000.

How long does it take to get an ADU permit in Pasadena?▼

The ADU permit process in Pasadena typically takes 60 to 120 weeks. California law requires cities to approve or deny ADU permits within 60 days of receiving a complete application.

What are the ADU size limits in Pasadena?▼

In Pasadena, detached ADUs can be up to 1200 square feet. Attached ADUs are limited to 50% of the primary dwelling or 1,200 sqft, whichever is less. Junior ADUs (JADUs) are limited to 500 sqft and must be within the existing home.

What is the setback requirement for ADUs in Pasadena?▼

Pasadena requires 4-foot setbacks from side property lines and 4-foot setbacks from rear property lines for new ADU construction. Converted structures (like existing garages) may maintain their current setbacks.

Do I need to provide parking for my ADU in Pasadena?▼

No parking is required for ADUs in Pasadena if your property is within half a mile of public transit, in a historic district, part of an existing multi-family building, or if the ADU is a garage conversion. Otherwise, one space may be required.

Also See ADU Contractors In

Los Angeles (3215)San Diego (2582)San Francisco (2170)Sacramento (1551)Riverside (925)Fresno (904)Anaheim (784)Irvine (760)

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