ADU Floor Plans

Check out our library of detached ADU floor plans!

We work with several construction crews, experienced ADU builders – we can build modular, container or custom stick-built or wall panel backyard homes. We have quite a library of floor plans for ADU homes that we can build in your backyard for you. You and your backyard are unique, so is our solution for your backyard.

  • ADU Modular unit
  • Modular ADU
  • Accessory dwelling unit 3D printed
  • Accessory dwelling unit 3D printed
  • Accessory dwelling unit
  • Accessory dwelling unit
  • Accessory dwelling unit
  • Accessory dwelling unit
  • Accessory dwelling unit
  • Accessory dwelling unit
  • Accessory dwelling unit
  • Accessory dwelling unit
  • Container backyard home

Not sure which floor plan will work for you?

We can help to select the best fit. We will ask you several questions about your property and your requirements for the ADU house plan, and then show what we think will work. Feel free to challenge us if what shows is off.

Or browse further to get a better idea of what is possible…

studio ADU

ADU house plans for a 250 sf studio

This detached ADU floor plan is ideal for smaller backyards as a home office, guest room, art studio or living quarters for a caretaker or au pair.

ADU house plans for a 500 sf one bedroom/one bathroom accessory dwelling unit

This detached accessory dwelling unit plan is ideal for renting out if you have a smaller backyard or for a home office/guest room combo.

Accessory dwelling unit

ADU house plans for a 750 sf 2 bedroom/one bathroom backyard home

This detached ADU plan will fit the lifestyle of your adult kid or older parent, also suitable for renting out to a couple of friends or small family.

ADU house plans for a 1000 sf 2 bedroom/2 bathroom backyard cottage

This detached accessory dwelling unit plan is perfect for renting to a family with kids, or comfortable retirement living. Pure social good.

Here is what you can expect in most popular ADU house sizes:

Square FootageNumber of bedroomsNumber of bathroomsCost of new construction*
250 SFStudio**1$200,000+
500 SF11$250,000+
750SF21$300,000+
1000 SF22$350,000+
*Costs shown are for ground up new construction on a flat lot in the Bay Area and include plans, permits, labor and materials.
**All ADU homes must have a kitchenette.

Step 1: Feasibility (always start here)

It all starts with our site visit and feasibility report.

Do you want to know what the most frequent mistake is we see homeowners make? They dive into design of the ADU floor plan and architectural drawings for their ADU homes before checking the zoning and site constraints. Do not miss this step. It might look like you are saving money, but it will come to bite you afterwards.

Any experienced ADU builder will charge you for the feasibility report – and the costs range from $1000 to $4500 – because it takes time and knowledge. Feasibility report includes the analysis of your city regulations, site analysis, and in our case – several options to build – often with different construction methods. By going with feasibility report through a builder – you lock yourself into the construction methods and vendors that this builder knows. What if there are other options that will work better for your site and situation?

You cannot save money during construction. In fact, you can not save money after submitting for permit. All savings are made at the planning and design stage.

Olesia Chikunova, ADU Specialist, HomeWiP Founder
Photo by Jadson Thomas on Pexels.com

In case you have not noticed, we are crazy about backyard homes.You can always ask us for an online walkthrough of any of our detached ADU plans. You will get the link for a detached accessory dwelling unit plan and will be able to walk around, looking into bedrooms and bathrooms – from the comfort of your sofa, for as long as you wish. We are one email away.

You can also click the button below to find one straight away or schedule a site visit to confirm feasibility.
This could be your ADU in your backyard.