ADU Designer
Design your ADU.
Set the size, pick a layout, furnish it, then see roughly how long it could take to pay for itself. Nothing here is a construction drawing, and nothing commits you to anything.
Start with the footprint
How big could your ADU be?
Change the dimensions. Watch the space take shape. Then we’ll see what your property can actually support.
- Preliminary ADU design study
- Conceptual only
Picked up where you left off.
Set the size. Drag the walls or use the controls, then press Make it a home.
Your estimated payback
8.3 years
100 months
- Investment
- $250,000
- Monthly rent
- $2,500
- Monthly expenses
- $300
- Net per month
- $2,200
Your ADU concept
500 sq ft
Typical planning range
A published planning range for this kind of project, not a quote for yours. What moves the number →
Conceptual and preliminary. Not for construction. Actual property review required.
Your concept so far
- Purpose
- Family
- Type
- Detached ADU
- Layout
- Studio
Current footprint
500 SF | 25′ × 20′
Interaction
- Drag the walls
- Resize instantly
- See changes in real time
Now for the reality check
You just designed a
500 sq ft ADU.
The calculator can show you the size. Your property determines whether it works. That is where we come in.
Now let’s find out what your property can actually support.
What happens next
- We look up the property, the zoning and the site conditions.
- We call you to talk through what you are actually trying to build.
- You get a realistic next step, in writing, with no obligation.
The list beside your concept is what we still have to verify. Nothing on it has been checked yet.
Let’s check the property
Send this concept to Ventura ADU Specialists.
We’ll look at the actual property, the zoning and the site conditions, then come back to you with what it would really take.
Plan the ADU before you build it.
Wondering how big an ADU you can build in Ventura County? Start with a simple footprint, explore a conceptual floor plan, and see how different sizes can work as a real living space. Ventura ADU Specialists can then review your actual property, zoning, site conditions and project requirements before you move forward.
The tool above covers ADU planning, ADU floor plans and ADU size. What it cannot cover is your parcel. ADU design in Ventura County, ADU permits and ADU construction all depend on the property itself, which is why every project we take on starts with property and zoning research rather than a drawing.
Whether you are considering a garage conversion ADU, a detached ADU in the backyard or an attached unit, the same first question applies: what can the property actually take?
Every property is different. The interactive design above is a conceptual planning tool, not a construction drawing or a guarantee that an ADU can be built on your property.