ADU and guest house plans
ADU and guest house plans for your Florida lot.
A detached guest house, casita or accessory dwelling unit is a small home of its own. We draw the full permit set in Revit for your lot, with engineering review and seals and a fixed price from $2,950.
What it is
A second, smaller home behind the first.
Florida cities and counties use different names for it: accessory dwelling unit, guest house, granny flat, casita or in law suite. We draw the detached kind, a separate building on the same lot as a main house.
Good reasons to build one
- A place for parents or grown children, close but on their own
- Room for guests without giving up your own space
- A home office or studio with a bathroom and kitchenette
- Rental income, where your local rules allow it
Check first
Your local code decides the size and the use.
There is no single Florida rule for guest houses. Your city or county zoning code sets the limits, and your plans have to meet them, so tell us your city and county in the request.
Is it allowed on your lot?
Zoning decides whether a second dwelling can go on your lot at all, and some areas only allow a guest house without a kitchen.
How big and where
Maximum size, height, setbacks and lot coverage come from the zoning code. Your boundary survey shows how much room you have.
Parking, utilities and address
Some places ask for a parking space, separate meters or its own address. The site plan shows how water, sewer or septic and power reach the new building.
Renting it out
Whether you can rent it, and for how long, depends on local rules and on your HOA if you have one.
The plan set
Drawn like a full home, at a small home's size.
A guest house goes through the same building permit review as a new home. Your quote lists the sheets and calculations your county needs for it.
- Site plan from your boundary survey, with both buildings, setbacks and utilities
- Floor plan, elevations, sections and roof plan
- Foundation, framing and connections designed for Florida wind
- Kitchen and bath layouts, doors and windows
- Revit model and CAD files
- Engineering review and seals
Questions
ADU and guest house questions.
How much do guest house plans cost?
Detached garages, guest houses and studios start at $2,950. The final fixed price depends on the size and the level of customization, and you get it in writing before we start. Survey, soil report and permit fees are not included.
Can you design an in law suite attached to my house?
No. A suite inside or attached to an existing home is an addition, and we only draw new homes and detached structures. A detached in law suite in your backyard is exactly what we draw.
How big can my ADU be?
Your city or county zoning code sets the limit, along with the height, setbacks and lot coverage. Tell us your city and county and we design within those rules.
Can I bring a guest house plan I like?
Yes, please do. A plan you like is the fastest starting point and keeps your price at the low end. We use it to understand the layout you want, then draw your own plans for your lot.
Plan the second home on your lot.
Tell us about your lot and what the guest house is for. You get a fixed price and a delivery date in writing before we start.