Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Kohler Home Additions & ADU: The West Palm Beach Owner’s Guide
Kohler home additions and ADU construction in West Palm Beach typically runs $45,000 to $130,000 for a permitted addition and $90,000 to $220,000 for a full ADU, depending on square footage, site conditions, and finish level. We plan around your existing Kohler plumbing and fixtures so the new space ties into the original systems without surprises. Most West Palm Beach homeowners start this conversation after a spare bedroom stops working for a growing family, or an aging parent needs a ground-floor unit with a curbless Kohler shower they can actually use.
Graham Stein walks every home addition and ADU site himself before a single drop cloth goes down. The written price comes first. The permit strategy, the material list by brand and quantity, the start and end window, the quiet-hour plan for nap schedules and dogs that bark at ladders – all of it in writing before the first tool is unpacked.
Which Kohler Models This Applies To
This page is for homeowners who already own Kohler fixtures and want an addition or ADU that works with them, not against them. Kohler makes three families of fixtures that matter here: the Kohler Memoirs, Persuade, and Tresham lines for faucets and shower trim, and the Kohler Wellworth and Highline toilet platforms with their standard 12-inch rough-in. If you’re putting a bathroom into an ADU, the rough-in matters first. A Kohler Highline toilet has a slightly different tank profile than a Wellworth, and in a compact ADU bath, that difference can cost you inches against the vanity.
Shower valves are the bigger gotcha. Kohler builds two valve platforms: Rite-Temp pressure-balancing valves and Thermostatic valves found in the higher-end DTV+ systems. They do not share trim. If you buy a Rite-Temp valve for the ADU but want Persuade trim later, you need to know the trim kit numbers before the wall closes. We stock Rite-Temp valves and the common Persuade, Dempsey, and Loure trim kits on the truck in West Palm Beach, so a spec change mid-rough-in doesn’t send anyone to a supply house across town. Kohler’s OEM warranty travels with the fixture, and we’re an independent contractor, not a Kohler dealer or affiliate.
Styles & brands we work with
Signs Your Kohler Home Additions & ADU Is Failing
Most additions and ADUs don’t fail the way a water heater does. They fail slowly, through the existing home’s connection points. Here’s what West Palm Beach owners flag when they call us:
- Damp drywall at the addition’s roofline tie-in. Florida’s afternoon storms find the one seam that wasn’t flashed correctly. We’ve opened ceilings in Flamingo Park and found the addition’s roof ledger wicking water back into the original attic.
- Doors that stick seasonally. An addition slab that wasn’t poured on compacted fill will move between the wet and dry seasons. If the bedroom door stops latching every June, the concrete below is flexing.
- Low water pressure in the new bathroom. If the addition was plumbed off a 1/2-inch line that also feeds the kitchen, a Kohler rain shower head will run anemic. The fix is usually a dedicated 3/4-inch supply.
- Hot water arrives late to the ADU. A tankless unit dialed in for the main house leaves the ADU faucets waiting 45 seconds. That’s not a Kohler problem, it’s a recirculation problem.
- Electrical flicker when the ADU’s AC kicks on. We’ve found undersized subpanels in additions built before Palm Beach County tightened load calculations. A mini-split and a microwave shouldn’t share a 20-amp circuit with a hair dryer.
Replacement Cost & What’s Included
For planning purposes, here’s what we see in West Palm Beach:
- Home addition: $45,000 to $130,000, generally $180 to $320 per square foot depending on whether it’s a bedroom bump-out or a full primary suite with plumbing.
- ADU construction: $90,000 to $220,000, driven by foundation type, separate electric service requirements, and whether it’s a garage conversion or a ground-up build.
- Garage conversion: $30,000 to $80,000, hinging on whether the slab needs lifting, new walls need insulation to code, and whether the existing panel has capacity.
Every price we give includes the written scope, the permit application and inspection management, the drop cloths and shoe covers, a photo of the clean-up before the crew leaves, and the 365-Day Done Right Promise. It does not include surprises. The written price is the price. If a code change happens mid-job, we tell you before anything else moves.
See the difference
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AfterDIY or Call Us?
If you’re in the early phase, there are things worth doing yourself: measuring the lot’s setbacks on the county assessor’s map, walking the property after a heavy rain to see where water pools, and making a list of what actually bothers you about the current layout. That list is gold when we price the job.
What we’d steer you away from: running electrical to an ADU, moving a load-bearing wall on the addition, or tying a new roof plane into the existing one. These are the places where a wrong step shows up a year later as a wet ceiling or a breaker that trips every July. Pulling permits in West Palm Beach means drawings stamped by a Florida-licensed engineer, and the inspection process is something we do every week. We can take it from the permit table to the final walkthrough. Call (728) 203-3270 and Graham will bring the written scope to your first estimate.
Key Takeaways
- Kohler additions and ADUs in West Palm Beach run $45,000 to $220,000 depending on scope; the written price comes before work starts.
- Rite-Temp and thermostatic valves are not interchangeable; we stock common Kohler trim kits on the truck.
- Florida humidity and storm water punish roof tie-ins and slab fills more than anything else; we flash and compact for this climate specifically.
- The 365-Day Done Right Promise covers every finished addition and ADU. Put it in writing, then do exactly that.
FAQs
A properly flashed and permitted addition in West Palm Beach should last 50 years or more for the structure, with the usual maintenance at the roof tie-in and stucco joints every 10 to 15 years. The thing that shortens that lifespan in Florida is water intrusion at improper flashings, which is exactly why we photograph the tie-in before closing it up. Call (728) 203-3270 if you want us to look at an existing addition’s seams.
Yes, and we repair far more additions than we tear down. A moving slab, a rotted ledger, low water pressure, or an underpowered subpanel are all specific, fixable problems with a written price each. Rebuilds only make sense when the addition was built without permits and fails enough code checks that bringing it current costs more than starting clean. We’ll tell you which one you have.
A Kohler valve or shower trim swap inside an existing addition takes a day. A full ADU takes three to seven months, with the permit review in West Palm Beach often being the longest single stretch. We give you a firm start and end window in the written scope, and we call when we say we will.
We stock the common Kohler Rite-Temp valves, Persuade and Loure trim kits, and Wellworth and Highline toilet rough-in parts on the truck. For specialized DTV+ thermostatic systems, we order Kohler OEM by part number and install it when it arrives. We also work with KraftMaid, Cambria, and Silestone for the cabinetry and countertop pieces that finish an ADU kitchen or bath.
If you’re ready to price a Kohler home addition or ADU in West Palm Beach, call (728) 203-3270. We’ll answer live, set a time that works around school pickup and nap schedule, and put the written price in your hands before the first tool comes off the truck.
Written by Graham Stein, Owner, Elmstead Remodeling West Palm Beach at Elmstead Remodeling West Palm Beach, serving West Palm Beach and nearby areas.
