What is the maximum ADU size allowed in Signal Hill?

Detached ADUs in Signal Hill can be up to 1200 square feet.

ADU Builders & Contractors in Signal Hill, CA

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

The average cost ranges from $143,000 to $318,000, or $193-368 per square foot.

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

The permit process typically takes 60 to 120 weeks in Signal Hill.

Signal Hill, CA is home to 57 ADU contractors ready to help. From initial permits to final inspection, these local professionals know Signal Hill's building codes and can guide your project from concept to completion.

📊 ADU Quick Facts for Signal Hill

Avg. Cost/sqft

$193-$368

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 57 ADU Contractors in Signal Hill

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#1KELTY CO INC

Signal Hill, CA

Kelty CO Inc — licensed ADU contractor in Signal Hill, CA. Detached ADU construction. 19+ years experience.

View Profile 📞 (562) 989 3200

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#2MOREY REMODELING GROUP

Signal Hill, CA

Morey Remodeling Group — licensed ADU contractor in Signal Hill, CA. Detached ADU construction. 43+ years experience.

View Profile 📞 (562) 425 1321

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#3PORTER BOILER SERVICE INC

Signal Hill, CA

Porter Boiler Service Inc — licensed ADU contractor in Signal Hill, CA. Detached ADU construction. 60+ years experience.

View Profile 📞 (562) 426 2528

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#4MAHER STEPHEN F GENERAL CONTRACTOR

Signal Hill, CA

Maher Stephen F General Contractor — licensed ADU contractor in Signal Hill, CA. Detached ADU construction. 38+ years experience.

View Profile 📞 (562) 301 3726

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#5MARK ALAN FRENETTE

Signal Hill, CA

Mark Alan Frenette — licensed ADU contractor in Signal Hill, CA. Detached ADU construction. 24+ years experience.

View Profile 📞 (562) 537 6488

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#6GULSRUD BRADLEY

Signal Hill, CA

Gulsrud Bradley — licensed ADU contractor in Signal Hill, CA. Detached ADU construction. 10+ years experience.

View Profile 📞 (562) 370 3422

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#7ANGULO CONSTRUCTION

Signal Hill, CA

Angulo Construction — licensed ADU contractor in Signal Hill, CA. Detached ADU construction. 36+ years experience.

View Profile 📞 (562) 787 3148

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#8SHARMA MOHAN A

Signal Hill, CA

Sharma Mohan A — licensed ADU contractor in Signal Hill, CA. Detached ADU construction. 20+ years experience.

View Profile 📞 (310) 941 2984

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#9G & G CONSTRUCTION

Signal Hill, CA

G & G Construction — licensed ADU contractor in Signal Hill, CA. Detached ADU construction. 33+ years experience.

View Profile 📞 (562) 981 8843

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#10JMS CREATE INC

Signal Hill, CA

Jms Create Inc — licensed ADU contractor in Signal Hill, CA. Detached ADU construction.

View Profile 📞 (562) 264 1444

View All 57 Contractors →

💰 How Much Does an ADU Cost in Signal Hill?

Garage Conversion

$66,500 - $126,500

Converting existing garage to living space

Detached ADU

$143,000 - $318,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,105 - $5,105

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Signal Hill

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

The average cost to build an ADU in Signal Hill ranges from $143,000 to $318,000, or approximately $193 to $368 per square foot. Garage conversions typically cost $66,500 to $126,500.

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

The ADU permit process in Signal Hill 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 Signal Hill?▼

In Signal Hill, 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 Signal Hill?▼

Signal Hill 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 Signal Hill?▼

No parking is required for ADUs in Signal Hill 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

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