Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Toto Home Additions & ADU: The Jacksonville Owner’s Guide
If you’re planning a home addition or ADU in Jacksonville and want Toto fixtures and fittings specified throughout, Elmstead Remodeling Jacksonville installs Toto products as part of additions and accessory dwelling units ranging from $45,000 to $130,000 for the addition itself, and $90,000 to $220,000 for a full ADU build. We write Toto model numbers directly into the scope of work, so you know exactly which toilets, bidets, and lavatory components are going in before the first wall goes up. Most Jacksonville homeowners come to us after a smaller renovation revealed they’d rather have the space they actually need than keep working around a house that no longer fits.
We’re an independent remodeling contractor, not affiliated with Toto, but we’ve installed their fixtures in enough Jacksonville homes to know which models hold up to Florida humidity and which ones create callbacks. Graham Stein, our owner, writes every scope in plain language: materials listed by name, labor broken into stages, no allowance line items that quietly grow. You’ll see the Toto part numbers on paper before you sign anything.
Which Toto Models This Applies To
Home additions and ADUs give you the rare chance to spec every fixture from day one, and Toto’s lineup splits into a few clear families. The Drake and Drake II toilets remain the workhorse choices for Jacksonville ADUs, particularly the 1.28 GPF models that meet Florida water-efficiency expectations without losing flush power. The Washlet+ series pairs a Toto toilet with an integrated bidet seat, and the key compatibility detail here is that the Washlet+ rough-in is not the same as the standard Washlet that retrofits onto an existing bowl. You can’t order the seat first and hope it fits whatever bowl arrives later.
For the G5 and G400 series in larger primary suites, the rough-in distance from the wall to the floor flange is the make-or-break measurement. Most Toto models sit at a standard 12-inch rough-in, but some elongated-bowl G-series units need 10 or 14 inches, and in an addition you control that framing early. We check the spec sheet against the stud wall before the plumber ever shows up. Aftermarket tank components and fill valves exist for Toto models, and they’re reasonable choices for repairs, but we default to OEM Toto parts for new construction and ADU rough-ins because the manufacturer warranty travels with them and Jacksonville’s mineral-heavy water is less forgiving of generic rubber internals.
We also specify kitchen and bath components from KraftMaid, Cambria, and Silestone where the project calls for them, so you’re not locked into one brand across the whole addition.
Styles & brands we work with
Key Takeaways
- Home additions in Jacksonville run $45,000 to $130,000; ADU construction runs $90,000 to $220,000, with Toto fixtures specified by model number in writing.
- Washlet+ rough-ins are not interchangeable with standard Washlet retrofits; confirming this early prevents a framing fix later.
- We use OEM Toto parts for new-build rough-ins, and the manufacturer warranty travels with the finished project.
- Our 365-Day Done Right Promise covers every completed addition and ADU: if it’s not done right, we make it right.
Signs Your Toto Home Additions & ADU Is Failing
- Water pooling around the base of a newly installed Toto toilet. This usually means the wax ring shifted during installation or the floor flange sits below the finished floor. In additions, the floor height is set before the tile goes in, so another eighth of an inch of flange height would have prevented it. We cut that correction into the first call-back rather than band-aid it with shims.
- The Washlet seat doesn’t heat or the lid doesn’t open on approach. That’s an electrical rough-in issue more often than a failed part. Toto bidet seats need a dedicated GFCI outlet within three feet of the bowl. If the electrician roughed it in from an old addition plan, the outlet ends up behind a vanity or on the wrong wall. We map outlet positions against the Toto spec before drywall goes up.
- Slow fill or ghost flushing in the middle of the night. Jacksonville’s water mineral content eats through generic flapper and fill valve components faster than the Toto factory parts. Ghost flushing on a Toto usually points to a slow leak from the tank into the bowl, and the fix is a specific Toto flapper, not a universal one from the nearest hardware store. The universal ones drop in but don’t seat fully on Toto overflow tubes.
- Condensation on the tank during summer months. Older Toto models with standard porcelain tanks sweat in Florida’s June-through-September humidity. Adding an in-wall tank or a model with a factory insulated tank solves it before it becomes a puddle on the new floor. Once the floor is down, the option narrows to a drip tray or an anti-sweat valve plumbed into the supply.
- Drywall cracks where the new addition meets the original house. This is the most common call we get in the first year after a Jacksonville addition. The failure isn’t the Toto fixture; it’s the transition joint. We fabricate a floating corner and leave the joint to cure before trim goes over it. When a crew skips that cure time, the crack appears after the first humid summer. The 365-Day Done Right Promise is what made us build that wait time into every schedule.
See the difference
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AfterReplacement Cost & What’s Included
A Toto-equipped home addition in Jacksonville runs $45,000 to $130,000, and a full ADU starts at $90,000 and can reach $220,000 depending on kitchen, bath count, and sitework. The Toto fixture package itself is a modest slice of that: a Drake or Drake II with installation typically lands in the low hundreds, and a Washlet+ comfort package pushes the fixture line up into four figures for higher-end models. Where the money goes is the rough-in work, the framing, the electrical, the tile, and the labor to make it all square.
What you get with our price: the written price before any work starts, every time. The fixture models named in the contract. A photo of the clean-up before the crew leaves. Shoe covers and drop cloths on every visit, no add-on charge. And the 365-Day Done Right Promise on the completed addition or ADU, which means if the work isn’t done right in that first year, we come back and make it right. No re-quoting, no negotiation.
DIY or Call Us?
Replacing a Toto fill valve or flapper in an existing bathroom is a reasonable Saturday project for a homeowner who’s done it before, and Toto’s part numbers are printed on the underside of the tank lid, so you can match them exactly. The danger and the money live in the rough-in work: moving drain lines, framing load-bearing walls, running electrical for a Washlet seat, tying a new addition’s roof into the existing one. Get that wrong and you’re not fixing a leak; you’re fixing the structure of your house.
For a home addition or ADU in Jacksonville, the number that keeps jobs from going sideways is the written scope before the first hammer swing. Call (904) 643-6243 and we’ll talk through the space, the Toto models you want, and what the project should cost. The estimate is free and the price is written down before you decide anything.
FAQs
Toto toilets and vitreous china lavatories routinely last 20 to 30 years with original factory internals, though Jacksonville’s hard water shortens the life of fill valves and flappers to 5 to 8 years before one needs replacing. The rough-in plumbing and tile work should outlast the fixtures. Call (904) 643-6243 and we’ll tell you which Toto repair parts are worth keeping on hand for your model.
A standard Washlet seat retrofits onto most conventional Toto bowls with a 12-inch rough-in, but Washlet+ models require a specific bowl and rough-in configuration that is set in the framing and plumbing stage. If you’re planning an ADU and want the integrated Washlet+ look, that decision belongs in the construction budget, not added later. We can walk you through the exact model pairings before you spend anything.
A straightforward detached ADU in Jacksonville typically runs 4 to 7 months from permit to final inspection, depending on sitework, utility connections, and the finish level. Toto fixtures don’t add time; they reduce it because the model numbers are decided before the plumber roughes in, which removes the change-order moment that stalls so many projects. We’ll give you a week-by-week schedule before work begins.
Our crews carry common Toto fill valves, flappers, and supply lines for the models we install most in Jacksonville, which means small issues get fixed on the first visit instead of waiting on a parts house. For uncommon Toto components we order OEM directly and schedule the follow-up around your home’s quiet hours. Call (904) 643-6243 and tell us the model number from the tank lid; we’ll confirm what’s on hand.
Get a Written Price Before You Build
If you’re planning a Jacksonville home addition or ADU and want Toto fixtures specified by name, call (904) 643-6243 to schedule your free estimate. We’ll walk the space, name the materials, name the day, and hand you a written price before any work starts. There is nothing left to wonder about.
Written by Graham Stein, Owner, Elmstead Remodeling Jacksonville at Elmstead Remodeling Jacksonville, serving Jacksonville and nearby areas.
