Veteran Owned · Free Estimates · Serving Tampa Bay
ADU Builder in Tampa
More Tampa families are adding a second living space on land they already own. We design and build attached and detached ADUs that fit the lot, match the main house, and pass inspection the first time.
Adding a Second Home on Your Own Lot
As an ADU builder Tampa homeowners call when they want real living space and not a glorified shed, Onsite Construction & Restoration handles the whole accessory dwelling unit from the first sketch to the final inspection. An ADU is a full second home with its own kitchen, bathroom, and entrance, built on the same parcel as your primary house. Some of our clients want a place for aging parents close by. Others want a detached suite they can rent. Many want both options open, so we plan the build to work either way.
We start by walking your property and reading the lot the way the county does. Setbacks, lot coverage, where your water and sewer lines run, and how much yard you actually want to keep all shape what we can build and where. From there we draw a unit that feels like part of your home rather than a box dropped in the back. A granny flat over a garage, a detached cottage near the alley, a suite tucked off the side of the house, we have built each of these for Tampa families and we will tell you honestly which one your lot supports.
Onsite is veteran owned and a state licensed Florida general contractor, and we carry that same standard into a 600 square foot ADU that we do into a full custom home. You get one team, one schedule, and one point of contact from permit to keys.
A Spare Room Is Not the Same as a Real Suite
A lot of homeowners try to stretch an existing bedroom or a converted porch into a living space for a parent or a tenant, then find out it has no real kitchen, the bathroom is down the hall, and there is no private entry. That is a remodel, not a dwelling. A true ADU is a separate, permitted home, and that difference is what protects your value and keeps the arrangement comfortable for everyone under one roof.
The other trap is building without checking the rules first. We have been called in to fix units that were started off permit and then flagged. Doing it right from the first day costs less than tearing into work that already failed.
Why Tampa Homeowners Build Their ADU With Onsite
Attached or Detached
We build both. An attached ADU shares a wall with your home and keeps the footprint tight. A detached suite stands on its own for full privacy and easier rental. We match the right one to your lot and your goal.
Built to Match the Main House
Your accessory dwelling unit should look like it was always there. We carry the same roof line, siding, trim, and window style across, so the new build reads as one property instead of an add on.
Rental Income Potential
A well built detached suite or garage flat can become a long term rental or a space for a returning adult child. We plan separate metering, parking, and a private entrance so the unit works as its own address.
We Read the Tampa Rules First
Before we draw anything, we check Hillsborough County and City of Tampa requirements on setbacks, size limits, and where an ADU is allowed on your parcel, so the plan we hand you is one the county will actually approve.
Ready to Get Started?
Tell us about your project and the Onsite team will walk you through the next steps.
ADU Questions Tampa Homeowners Ask
What is the difference between an attached and a detached ADU? +
Can I build a mother in law suite to keep a parent close? +
Is an ADU a good way to earn rental income? +
Does Tampa allow ADUs on my property? +
Will the new unit look like part of my home? +
How long does an ADU build take? +
Still Have Questions?
Call and talk it through with the Onsite team before you decide.
Serving Homeowners Across Tampa Bay
Onsite builds and rebuilds across the Tampa Bay region and the communities around Hillsborough and Pinellas County.
Our office sits at 1305 N. Armenia Ave., Tampa, FL 33607. Directions from nearby Tampa landmarks: