DIY ADU floor Plans

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Micro Units

150 sq ft to 250 sq ft

The Micro units are the smallest ADU designs that are built to the building code. They are not “Tiny homes” built to the RV code.

Micro 150

150 sq ft ADU Unit: Micro 150 floor plan

Micro 200

200 sq ft ADU Unit: Micro 200 floor plan

Micro 250

250 sq ft ADU Unit: Micro 250 floor plan

Mini Units

250 sq ft to 399 sq ft

The Mini units are small enough to fit on smaller inner city lots and their size makes them affordable to a much larger group of people. Don’t let their size fool you, these plans all feel much larger then they appear!

The Becky

288 sq ft ADU Unit: The Becky floor plan

The Elisabeth

300 sq ft ADU Unit: The Elisabeth floor plan

The Jake

390 sq ft ADU Unit: The Jake floor plan

Suite Units

400 sq ft to 649 sq ft

Suite units are great for most suburban lots and also work great in some of the larger inner city properties. Our smallest 2 bedroom plan shows up in this group.

The Pete

451 sq ft ADU Unit: The Pete floor plan

The Andy

300 sq ft ADU Unit: The Andy floor plan

The David

390 sq ft ADU Unit: The David floor plan

Villa Units

650 sq ft to 1,200 sq ft

Villa units are suitable for estate properties, acreage, larger corner lots and cul-de-sac lots with pie shaped configurations. These homes are great as stand alone structures or with an attached garage.

The Julie

700 sq ft ADU Unit: The Julie floor plan

The Ryan

792 sq ft ADU Unit: The Ryan floor plan

The Barbara

1,000 sq ft ADU Unit: The Barbara floor plan

Standard Equipment and Features

General and Exterior

  • Concrete slab foundation
  • Fiber cement lap siding
  • 8ft sidewall height
  • Composition roof
  • Vinyl, dual glaze, low E windows Insulation R15:walls & R30:roof
  • 36” Exterior door (fiberglass standard)
  • 5” baseboards throughout
  • Carpet throughout


  • Tankless water heater
  • Mini split heating/cooling
  • 100AMP electrical subpanel


  • Raised Panel cabinets
  • Laminate countertops
  • Drop-in sink
  • 2 burner cook top
  • Recessed can light above


  • Vanity with molded sink
  • Dual handle faucet
  • Fiberglass shower w/rod
  • Power vent
  • 1.28gpf toilet
  • Chrome medicine cabinet Linoleum floor

Uses for an ADU

Personal housing

In-law suite

Home for adult children

Rental income

Home office

Reasons to build an ADU vs Buying a home

Reduce expenses

Decreased maintenance

Little to no debt

Self sufficiency

Reduced carbon footprint

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Tools and Resources

Step-by-step guidance

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HPP CARES CDE's accomplishments these past few years have been significant and all-encompassing; striving to advocate under the National Coalition for Equities’ umbrella to maintain a powerful community voice among the Federal and State regulators and major private sector corporations to address public policy issues, and to focus on the wealth & income inequality affecting affordable homeownership and small business growth. With the NCFE, HPP CARES CDE’s outreach efforts have led to an increase in corporate social responsibility and consumer protection. We have been able to reach more people, collaborate with more companies, meet with more regulators, all in the name of helping deserving individuals become sustainable homebuyers, successful small business owners, protected consumers and empowering California communities. HPP CARES CDE is at the forefront of helping people of color become partners in our mission to reduce income and wealth inequality and build stronger futures for all minority groups.