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An ADU is a secondary house, apartment, or in-law unit (similar to a tiny home) that is added to any single family or multi-family lot with an existing residential dwelling.

Accessory Dwelling Units (ADU)

Accessory Dwelling Units (ADU)

Limitless Possibilities

An ADU can be used as a:
Guest House - Provide your guests with a home away from home
Rental Property - Earn passive income with your rental unit
Home Office - Work from home in your own space
Pool House - On a hot day after a swim, freshen up and relax in your pool house
Home Gym - Cancel your gym membership and work out at home

Enjoy Endless Benefits

Higher Return on Investment
Higher return
on investment
Generate Passive Income
Generate passive income
Environmentally Friendly
Environmentally friendly
More Durable than Traditional Construction
More durable than traditional construction
Up to 1,200 square feet of new living space
Up to 1,200 square feet of new living space
Increase your property value by 30%
Increase your property value by 30%

Enjoy Endless Benefits

More Durable than Traditional Construction
More Durable than Traditional Construction
Up to 1,200 square feet of new living space
Up to 1,200 square feet of new living space
Increase your property value by 30%
Increase your property value by 30%
Environmentally Friendly
Environmentally Friendly
Generate Passive Income
Generate Passive Income
Higher Return on Investment
Higher Return
on Investment
Ready to get started? We'll just need to learn a bit more about your property first
Ready to get started? We'll just need to learn a bit more about your property first

Mighty ADU Models

Under California state law, the maximum square footage for an ADU is 1,200 square feet. Local jurisdictions may vary.
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MIGHTY DUO

Floor Area: 700 sq. ft.
Overall Dimensions: 28' x 25'
Bedrooms: 1 or 2
Bathrooms: 1
Starting at $274,000
Starting at $204,000
Floor Area: 350 sq. ft.
Overall Dimensions: 25' x 14'
Bedrooms: Studio
Bathrooms: 1

MIGHTY STUDIO

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MIGHTY QUATRO

Floor Area: 1176 sq. ft.
Overall Dimensions: 24' x 49'
Bedrooms: 2
Bathrooms: 2
Starting at $434,000
Starting at $349,000
Floor Area: 864 sq. ft.
Overall Dimensions: 24' x 36'
Bedrooms: 2
Bathrooms: 1

MIGHTY TRIO

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How it works

Mighty Buildings, How it works
- Free feasibility study
Choose your Mighty Unit
Site Assessment
- $1,000 fee
- Project proposal
- Budget approval
Entitlement Service (1-2 months)
Permitting Process (2-4 months)
- Permit application submittals
- Building permit issuance
- Mighty Unit fabrication
Delivery and Installation (1 month)
- Sit back and relax while we deliver and install your unit!
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- Sign the contract
- $20k fee for design/engineering preparation and a soil report
- Site-specific documentation and reports required for permits
ADU Regulations
Mighty Buildings, Who we are
Check city requirements to build an ADU
Interested in a Mighty Unit of your own?