Toto Home Additions & ADU Nationwide

Toto Home Additions & ADU: The Pompano Beach Owner’s Guide

Toto bathroom fixtures are installed in most Rowan Construction Group home additions and ADUs in Pompano Beach, with full Toto-compatible rough-in and finish packages typically running $2,800-$7,500 installed depending on fixture count and series. We stock Toto Drake, Ultramax II, and Aquia carrier hardware on our trucks, and most replacements ship same-day from our Fort Lauderdale supplier. Homeowners usually discover a failing Toto component during the final walkthrough of an addition or when an older Toto toilet in the existing structure starts running continuously after the new ADU plumbing goes live.

Call (754) 714-6540

Which Toto Models This Applies To

The Toto parts we handle for Pompano Beach additions and ADUs fall into three series families. The Drake line, CST744E and CST454CEFG, uses a 3-inch flush valve with a proprietary red flapper, not the industry-standard 2-inch, so a generic hardware-store replacement will seat poorly and leak within weeks. The Ultramax II, MS604114CEFG, carries the Double Cyclone flush system with a different bowl-to-tank gasket profile, and the Aquia wall-hung series, CT418F, requires the WT152M in-wall carrier, which has a 2-inch by 6-inch stud-bay minimum and specific PEX supply routing that we have seen other contractors in Pompano Beach get wrong.

To identify your exact part, check the stamped model number inside the tank lid or on the carrier frame behind the wall plate. The serial sticker on the underside of the ceramic also lists the manufacturing date, which matters because Toto changed its fill-valve supplier from Korky to WDI in 2015, and the threading differs. We source OEM Toto parts through our Ferguson supply house, though for discontinued models we will spec a quality aftermarket equivalent and document the substitution in your project file. Measure twice, say it once, show your work.

Signs Your Toto Home Additions & ADU Is Failing

• Continuous running or phantom flushing. The fill valve fails to seat fully, usually from sediment buildup in Pompano Beach’s moderately hard water, or the flapper warps from chlorine exposure. The toilet draws small amounts of tank water repeatedly, which shows up as a higher water bill before you hear it.
• Weak or incomplete flush. On Drake and Ultramax II units, this points to a clogged rim jet from mineral scaling, common in Broward County’s limestone-influenced supply, or a degrading flush valve seal that drops water volume below the siphon threshold.
• Rocking or leaking at the base. The wax ring compresses over time, but in additions and ADUs we also see this when the original installer skipped the extra-thick reinforced ring on tile-over-concrete floors, which are standard in Pompano Beach slab construction.
• Wall-hung bowl movement. The Aquia carrier’s threaded rods can loosen if the initial torque spec was missed, or if the drywall grommets degrade in the humid months. This is not a cosmetic issue, a loose carrier stresses the PEX supply and can crack the concealed tank.
• Slow tank fill or hammering pipes. The fill valve diaphragm hardens, or the supply stop under the tank was partially closed during construction and never reopened fully. In ADU conversions we often find the original 3/8-inch supply is undersized for modern Toto fill rates.

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Replacement Cost & What’s Included

For a Toto fixture replacement within a Rowan Construction Group home addition or ADU in Pompano Beach, expect $280-$750 per toilet for standard floor-mount models, including OEM Toto parts, new supply line, reinforced wax ring, and labor. Wall-hung Aquia replacements run $650-$1,400 because the carrier frame must be accessed, often through drywall repair that we include in the quote. The range depends on whether we are matching existing trim or upgrading the series, and whether the flange needs resetting.

Every replacement carries our 365-Day Done Right Promise under The Haven Standard, Clause 1, the written price is delivered before any work starts. We also include a documented photo record of the rough-in condition, the installed assembly, and the water-test result. No change proceeds without a signed change order, which is the discipline that has kept our projects within a few percent of the agreed cost across 4,000-plus jobs since 2007.

DIY or Call Us?

An owner can safely check the supply stop operation, listen for the fill valve’s hiss point, and verify the tank lid model number, all useful diagnostic steps. Where DIY goes wrong is the carrier torque spec on wall-hung units, the flange height relative to finished floor, which must be within 1/4-inch for Toto’s skirted designs to seal, and the Pompano Beach-specific issue of older cast flanges that crack when disturbed. We have been called to three jobs in the past two years where a homeowner’s self-installed wax ring failed because the flange was not cleaned to bare PVC first. For anything behind the wall or under the slab, call (754) 714-6540, we will schedule a free estimate and give you the written price before anyone picks up a tool.

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