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ADU Builders & Contractors in Bellflower, CA

Building an ADU in Bellflower? You'll find 110 licensed contractors in the area, ready to help. Bellflower's ADU market continues to grow as homeowners invest in additional living space, rental income, and multi-generational housing.

📊 ADU Quick Facts for Bellflower

Avg. Cost/sqft

$196-$371

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 110 ADU Contractors in Bellflower

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#1NEW CREATION CO

Bellflower, CA

New Creation CO — licensed ADU contractor in Bellflower, CA. Detached ADU construction. 16+ years experience.

View Profile📞 (562) 804 0478
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#2KELLER ROBERT JAMES II AND CO

Bellflower, CA

Keller Robert James II And CO — licensed ADU contractor in Bellflower, CA. Detached ADU construction. 34+ years experience.

View Profile📞 (562) 925 7905
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#3ROCKWOOD REMODELS

Bellflower, CA

Rockwood Remodels — licensed ADU contractor in Bellflower, CA. Detached ADU construction. 16+ years experience.

View Profile📞 (562) 343 8904
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#4GREENCAL CONSTRUCTION INC

Bellflower, CA

Greencal Construction Inc — licensed ADU contractor in Bellflower, CA. Detached ADU construction. 8+ years experience.

View Profile📞 (714) 790 1750
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#5CHONG PAUL M

Bellflower, CA

Chong Paul M — licensed ADU contractor in Bellflower, CA. Detached ADU construction. 8+ years experience.

View Profile📞 (562) 332 0244
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#6GUNDRY PARTNERS LP

Bellflower, CA

Gundry Partners LP — licensed ADU contractor in Bellflower, CA. Detached ADU construction. 10+ years experience.

View Profile📞 (562) 427 4124
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#7HABITAT FOR HUMANITY OF GREATER LOS ANGELES

Bellflower, CA

Habitat For Humanity OF Greater Los Angeles — licensed ADU contractor in Bellflower, CA. Detached ADU construction. 18+ years experience.

View Profile📞 (310) 323 4663
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#8C & C CONSTRUCTION

Bellflower, CA

C & C Construction — licensed ADU contractor in Bellflower, CA. Detached ADU construction. 34+ years experience.

View Profile📞 (661) 600 2554
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#9BELLFLOWER CONSTRUCTION

Bellflower, CA

Bellflower Construction — licensed ADU contractor in Bellflower, CA. Detached ADU construction. 27+ years experience.

View Profile📞 (562) 925 8460
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#10COSINE CONSTRUCTION LLC

Bellflower, CA

Cosine Construction Llc — licensed ADU contractor in Bellflower, CA. Detached ADU construction.

View Profile📞 (949) 870 7371
View All 110 Contractors →

💰 How Much Does an ADU Cost in Bellflower?

Garage Conversion

$68,000 - $128,000

Converting existing garage to living space

Detached ADU

$146,000 - $321,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,101 - $5,101

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Bellflower

How much does it cost to build an ADU in Bellflower?▼
The average cost to build an ADU in Bellflower ranges from $146,000 to $321,000, or approximately $196 to $371 per square foot. Garage conversions typically cost $68,000 to $128,000.
How long does it take to get an ADU permit in Bellflower?▼
The ADU permit process in Bellflower 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 Bellflower?▼
In Bellflower, 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 Bellflower?▼
Bellflower 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 Bellflower?▼
No parking is required for ADUs in Bellflower 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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