Best North San Diego Homes

Additional Dwelling Units | 3D ADU Homes | Mighty Buildings

404 Wisconsin Ave, Oceanside, CA 92054

Additional Dwelling Units (ADU Homes)





Discover an ADU Home in San Ramon by Mighty House 

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What are ADUs?

Accessory Dwelling Units (ADUs) have been known by many names: granny flats, in-law units, backyard cottages, secondary units and more. No matter what you call them, ADU homes are an innovative, affordable, effective option for adding much-needed housing in California. HCD is the state’s leader on local ADU home ordinances, which — while optional — have grown exponentially in number as more cities, counties, and homeowners become interested in ADU homes as one solution to increasing the supply of affordable housing.


What are the benefits of Additional Dwelling Units?
  • ADU homes are an affordable type of home to construct in California because they do not require paying for land, major new infrastructure, structured parking, or elevators.
  • ADU homes can provide a source of income for homeowners.
  • ADU homes are built with cost-effective wood frame construction, which is significantly less costly than homes in new multifamily infill buildings.
  • ADU homes allow extended families to be near one another while maintaining privacy.
  • ADU homes can provide as much living space as many newly-built apartments and condominiums, and they’re suited well for couples, small families, friends, young people, and seniors.
  • ADU homes give homeowners the flexibility to share independent living areas with family members and others, allowing seniors to age in place as they require more care. 


Click Here to learn more about additional dwelling units in California! 



Our Mighty Units


Our Turn-key solution takes care of the end-to-end process from permitting to installation of an Additional Dwelling Unit. You name it, Mighty Buildings has got you covered for your ADU needs. All you need to do is choose a Mighty Unit, sit back, and relax as we deliver and install your unit for you. The Mighty Buildings Cost are below:



MIGHTY STUDIO*                                                                                                       MIGHTY DUO B*

1 bed/1 bath                                                                                                                1 bed/1 bath

Total area: 350 sq.ft                                                                                                    Total area: 700 sq.ft

Dimensions: 25′ x 14′                                                                                                   Dimensions: 28′ x 25′

$99,000                                                                                                                        $149,000



MIGHTY TRIO*                                                                                                          MIGHTY QUATRO*

2 bed/1 bath                                                                                                             2 bed/1 bath

Total area: 865 sq.ft                                                                                                 Total area: 1150 sq.ft

Dimensions: 24′ x 36′                                                                                               Dimensions: 24′ x 48′

$165,000                                                                                                                   $199,000



MIGHTY QUATRO*                                                                                                  MIGHTY CINCO*

2 bed/2 bath                                                                                                            3 bed/2 bath

Total area: 1199 sq.ft                                                                                                Total area: 1440 sq.ft

Dimensions: 24′ x 50′                                                                                               Dimensions: 24′ x 60′

$219,000                                                                                                                    $249,000


* Unit only price

Feasibility Study

Request a feasibility study report for your property. It is your first step to learn what you can fit on your property. Our team will research your zoning requirements and schedule a site assessment visit to your property to confirm findings and provide estimates for your project specifically. We will assess our current Additional Dwelling Unit plans and determine which model works best for your property. Click Here to request your feasibility study.

Your benefits

High-end finishes

Our units come with all interior finishes including counter-tops, cabinets, appliances, and HVAC system.


Beautiful, modern design

Top-notch architectural companies create the beautiful and sustainable design of our units.


   Turn-key solution

You do not have to deal with the hassle of on-site construction, permitting or design.


100% safe and ecological

The materials used in our Mighty Additional Dwelling Units have been thoroughly tested and certified for use in living quarters. Confirmed in our quality certificates.


Certified 3D printing technology

Our technology is certified by International leaders in the materials industry with strict safety and quality standards.


Fast delivery

Time is money! Our modular houses are built much faster and less invasive than standard on-site construction.


To see a Mighty Buildings Additional Dwelling Units Creation in action, view this informative video on ‘Mighty Studio Production & Installation’:


Mighty Buildings “Prefab Additional Dwelling Unit’s”


Mighty Buildings is a prefab ADU modular homes construction company working on disrupting the residential housing market. By utilizing 3D printing technology and our unique composite materials, we are meeting and exceeding California building standards. We build modern housing more efficiently and at a lower cost than traditional construction on our Additional Dwelling Units.
Our prefabricated buildings come with a FBH Insignia from the Housing Community Department of California, which is a state pre-approval for building standards. Mighty Buildings meet or exceed all local building codes throughout California. Our unique composite material has been tested by UL (Underwriter’s Laboratories) for fire, earthquakes, air and water resistance, VOC. Compliance with Title 24 Energy Efficiency Standards facilitates the installation and permitting processes.


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Please use the contact form below, if you have any general questions or requests about our services.

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404 Wisconsin Ave

Oceanside, CA 92054

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