Specialized Prefab Manufactured Home & ADU Builders in Southern California

USModular Inc. is very unique in the construction industry as we are a second-generation full-service general contracting firm, developer, and licensed manufactured home retail dealer specializing in prefabricated home construction. We build accessory dwelling units (ADUs) and single-family manufactured homes that follow the local building codes and HUD guidelines. Our manufactured homes are also eligible for the MH Advantage program by Fannie Mae.

What We Build With Prefab Construction!

Accessory Dwelling Units

Granny Flats * In-Law Suites * Casitas
400 – 1,200 Sq. Ft.

Prefab Accessory Dwelling Units

Single Family Manufactured Homes

HUD/Federal Code * Placed on Private Property or in a Park
400 – 2,800 Sq. Ft.  

Single Family Manufactured Homes

Single Family Modular Homes

State/Local Code * Pre-Designed Single Story
400 – 3,000 Sq. Ft. 

Single Family Modular Homes

MH Advantage Homes

HUD/Federal Code * Single Family * Must be on Private Land
Up to 2,900 Sq. Ft.

Appraises Like a Site Built Home!

Single Family Manufactured Home Advantage

Modular Multifamily Housing

State/Local Code

Modular Multi Family Housing

Download our free Cottage Series ADU Brochure

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Why Southern California Manufactured Homes Kick Traditional Home Building Methods to the Curb

We’ve all heard horror stories about construction delays, hidden expenses, and other obstacles to building a new home, but there is a better way. As the premier builder of Southern California Manufactured Homes, US Modular has perfected the process of constructing homes off-site in a controlled environment, and we build ’em fast – often 30-50% faster than old-fashioned methods. 

The process we use on our prefab homes in California is cost-effective, with less waste and more predictable expenses, to boot. And there’s no need to worry about compliance with local ordinances. Our modular homes in California follow ADU Regulations to the letter.

Whether you’ve got your heart set on a single-family pre-manufactured home or you need an ADU Builder to fashion your granny flat, US Modular is here for you. Check out our service areas for modular homes in Southern California, and let’s get started building your dream!

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1 day ago

Beautiful new ADU in Clairemont, San Diego, CA. This 1000 sq ft 2 bedroom 2 bath beauty has quartz countertops, stainless steel appliances and plank vinyl flooring. Completed onsite in 30 days. Need exrta living space? An ADU may be for YOU. Call for a complementary site evaluation( $500) value).. 951 679 9907. ... See MoreSee Less

Beautiful new ADU in Clairemont, San Diego, CA. This 1000 sq ft 2 bedroom 2 bath beauty has quartz countertops, stainless steel appliances and plank vinyl flooring. Completed  onsite in 30 days. Need exrta living space? An ADU may be for YOU. Call for a complementary site evaluation( $500) value).. 951 679 9907.Image attachment
1 week ago

Wow....look at that beautiful ADU with rock foundation. This 2 bedroom 2 bath beauty blends in nicy with the main home. With 9 ' ceilings and 80 " windows and stainless steel appliances ...we have another happy homeowner. Need extra living space? Contact the ADU experts at 951 679 9907 ... See MoreSee Less

Wow....look at that beautiful ADU with rock foundation.  This 2 bedroom 2 bath beauty blends in nicy with the main home.  With 9  ceilings and 80  windows and stainless steel appliances ...we have another happy homeowner. Need extra living space?  Contact the ADU experts at 951 679 9907
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