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ADU Builders & Contractors in Glendora, CA

Glendora, CA homeowners looking to build an ADU have 201 licensed contractors to choose from, ready to help. Whether you're planning a garage conversion, detached ADU, or junior ADU, finding the right contractor in Glendora starts here.

📊 ADU Quick Facts for Glendora

Avg. Cost/sqft

$201-$376

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 201 ADU Contractors in Glendora

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#1ROMART DEVELOPMENT

Glendora, CA

Romart Development — licensed ADU contractor in Glendora, CA. Detached ADU construction. 49+ years experience.

View Profile📞 (626) 665 9362
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#2CARNES BRIAN

Glendora, CA

Carnes Brian — licensed ADU contractor in Glendora, CA. Detached ADU construction. 8+ years experience.

View Profile📞 (909) 242 4881
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#3SYNDICATE BUILDERS INC

Glendora, CA

Syndicate Builders Inc — licensed ADU contractor in Glendora, CA. Detached ADU construction. 6+ years experience.

View Profile📞 (626) 862 7157
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#4POSITIVE PLUMBING INC

Glendora, CA

Positive Plumbing Inc — licensed ADU contractor in Glendora, CA. Detached ADU construction. 37+ years experience.

View Profile📞 (626) 444 4607
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#5H J VAST

Glendora, CA

H J Vast — licensed ADU contractor in Glendora, CA. Detached ADU construction. 19+ years experience.

View Profile📞 (626) 301 4447
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#6PARKER DAVID

Glendora, CA

Parker David — licensed ADU contractor in Glendora, CA. Detached ADU construction. 31+ years experience.

View Profile📞 (626) 429 6110
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#7SUNTHURST ENERGY, LLC CA

Glendora, CA

Sunthurst Energy, Llc CA — licensed ADU contractor in Glendora, CA. Detached ADU construction. 11+ years experience.

View Profile📞 (323) 480 3835
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#8B J CONSTRUCTION

Glendora, CA

B J Construction — licensed ADU contractor in Glendora, CA. Detached ADU construction. 36+ years experience.

View Profile📞 (626) 250 8269
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#9A L D CONSTRUCTION

Glendora, CA

A L D Construction — licensed ADU contractor in Glendora, CA. Detached ADU construction. 24+ years experience.

View Profile📞 (626) 487 0152
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#10GREENE MARC B CONSTRUCTION

Glendora, CA

Greene Marc B Construction — licensed ADU contractor in Glendora, CA. Detached ADU construction. 34+ years experience.

View Profile📞 (626) 335 7075
View All 201 Contractors →

💰 How Much Does an ADU Cost in Glendora?

Garage Conversion

$70,500 - $130,500

Converting existing garage to living space

Detached ADU

$151,000 - $326,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,108 - $5,108

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Glendora

How much does it cost to build an ADU in Glendora?▼
The average cost to build an ADU in Glendora ranges from $151,000 to $326,000, or approximately $201 to $376 per square foot. Garage conversions typically cost $70,500 to $130,500.
How long does it take to get an ADU permit in Glendora?▼
The ADU permit process in Glendora 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 Glendora?▼
In Glendora, 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 Glendora?▼
Glendora 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 Glendora?▼
No parking is required for ADUs in Glendora 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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