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Kohler Home Additions & ADU: The Fort Lauderdale Owner’s Guide
If you’re adding square footage or building an ADU in Fort Lauderdale and want Kohler fixtures and finishes in the new space, the typical installed project runs $45,000–$130,000 for a home addition, with a standalone ADU construction generally landing between $90,000–$220,000. That range includes everything from rough framing and plumbing rough-in to the Kohler fixtures, tile, and trim at the end. Most owners figure out they need help not because a single part failed, but because the scope outgrew them: a bathroom addition that needs a new sewer line tie-in, or an ADU over a garage that requires structural reinforcement before the first Kohler shower valve ever gets installed.
We’re Sawyer Remodel Fort Lauderdale, and we handle the whole job from foundation to finish, including specifying and installing Kohler fixtures that match the rest of your house. We’re an independent contractor, not affiliated with Kohler, which means we get to tell you the truth about what works in a South Florida build and what doesn’t.
Key Takeaways:
- Fort Lauderdale home additions run $45,000–$130,000; ADUs run $90,000–$220,000 installed.
- You get a written price before any work starts, and the number doesn’t change at the door.
- Kohler fixture selection matters early: tubs, shower valves, and wall-hung toilets need rough-in decisions before drywall goes up.
- We pull permits, schedule inspections, and walk you through every phase with photo updates.
- Call (754) 354-7423 for a free estimate on your addition or ADU.
Which Kohler Models This Applies To
For a home addition or ADU, you’re not swapping a single failing part, you’re choosing every fixture for a whole new space. The Kohler catalog matters at the rough-in stage, long before finishing work begins. Here’s what we see most in Fort Lauderdale additions and ADUs:
- Shower valves: The Kohler Rite-Temp and MasterShower series are common choices. The MasterShower thermostatic valve is 3/4″ inlet and requires a specific rough-in depth from finished wall. If the tile gets too thick, the trim plate won’t seat, and you’re pulling tile off a brand-new wall. We set the valve depth to the finished surface, not the stud, which is where DIY and rushed rough-ins go wrong.
- Wall-hung toilets: Kohler Veil and Reach wall-hung models need an in-wall carrier installed and inspected before drywall. The carrier is a separate brand decision, and the bolt spacing has to match the Kohler bowl exactly. After the fact, fixing a misaligned carrier means opening the wall.
- Bathtubs and shower bases: Kohler Archer, Underscore, and Bellwether tubs want a level, properly supported subfloor. A 1/8″ sag over a 5-foot span shows up as a cracked apron or a squeak that never goes away. In Fort Lauderdale’s humidity, that slight flex also works the caulk joint loose faster than it would in a dry climate.
- Kitchen and bath faucets: Kohler Artifacts, Purist, and Simplice lines all have proprietary supply line connections. Mixing aftermarket hoses with an OEM valve body sometimes works and sometimes weeps at the joint. We default to OEM Kohler parts for anything inside the wall, and we’ll tell you when an aftermarket equivalent is genuinely fine.
Identifying the right model later means knowing what you bought now. Keep the model numbers from the original boxes or spec sheets. If you’re working from an existing home and matching finishes, the model tag is usually on the underside of the faucet body or the back of the toilet tank. Photograph it before you throw the box away.
Styles & brands we work with
Signs Your Kohler Home Additions & ADU Is Failing
For an entire addition or ADU, “failing” usually means one of five things. Each one has a specific cause, and none of them fix themselves.
- Water pressure drops in the new space but not the rest of the house. This usually points to an undersized supply line from the main, or a debris-clogged Kohler cartridge in the new shower valve. In Fort Lauderdale, older homes near Las Olas Boulevard often have 1/2″ supply lines that can’t feed a 3/4″ MasterShower valve properly. It’s a plumbing sizing issue, not a fixture defect.
- Caulk and grout cracking within the first year. New construction settles. If the addition’s slab wasn’t compacted or the framing wasn’t left to dry before drywall, that movement shows up as hairline cracks at tub decks and shower corners. South Florida’s humidity accelerates the damage because moisture gets behind the crack and stays there.
- Mold or mildew smell in the new bathroom within months. That’s almost always an exhaust fan that wasn’t ducted to the exterior, or a shower pan that wasn’t water-tested before tile. In a humid climate like Fort Lauderdale, a recirculating fan or a missing pan liner will grow mold fast, and no amount of bleach fixes the source.
- Doors and windows stick or won’t latch. An addition that settles unevenly will rack openings. If the exterior doors in the new ADU bind at the top corner, the framing or foundation has moved. This is a structural call, not a hardware adjustment.
- The new space never reaches the thermostat setting. Undersized HVAC ducting or a poorly placed return is the usual culprit. ADUs over detached garages in Fort Lauderdale bake in the afternoon sun, and a mini-split sized for the square footage but not the heat load will run constantly and still leave the room at 82°F in August.
Replacement Cost & What’s Included
For a full home addition in Fort Lauderdale, plan on $45,000–$130,000 depending on square footage, foundation type, and finish level. A detached ADU runs $90,000–$220,000 because it needs its own electrical service, water and sewer lines, and often its own HVAC. A garage conversion lands between $30,000–$80,000. Every one of those numbers includes permits, inspections, materials, and labor, with the Kohler fixtures selected before rough-in so the whole system fits together.
- What drives the price:
- Square footage and whether you’re building on a slab or raised foundation.
- Number of wet zones: a half bath costs far less than a full bath with a Kohler tub and separate shower.
- Structural work: reinforcing an existing garage for an ADU above it adds framing and engineering costs.
- Finish level: a Kohler Archer tub and standard tile versus a freestanding Kohler Abrazo tub with floor plumbing and a custom tile surround. The tub alone can swing the budget by thousands.
- Written price, no surprises: We hand you a line-item written price before any work starts. The number on the invoice is the number you approved. No change orders because we missed a line item, no “that wall was worse than we thought” markup at the end.
- The 365-Day Done Right Promise: If it’s not done right, we make it right, backed in writing on every project. That covers the Kohler fixtures, the tile, the framing, the drywall, the paint, everything we touched, for a full year after we close the job.
Luca Romano reviews every addition and ADU estimate personally before it goes out. You get one number, not a range that mysteriously grows.
See the difference
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AfterDIY or Call Us?
You can handle some of the early decisions yourself: picking Kohler finish colors, choosing between a tub and a walk-in shower, deciding where outlets and switches go. You can also pull the trigger on a Kohler fixture package from a showroom if you want a specific look. What you shouldn’t DIY is anything structural, electrical, or plumbing-related. Cutting into a load-bearing wall or tying a new sewer line into the city main without a permit is how you end up with a stop-work order and a tear-out bill that doubles the project cost. In Fort Lauderdale, unpermitted ADU work is also a problem when you sell, lenders and buyers both ask questions you don’t want to answer. Anything that holds water, holds weight, or holds voltage belongs to a licensed crew. Call (754) 354-7423 and we’ll walk you through what’s safe to handle and what isn’t. The estimate’s free either way.
FAQs
A typical home addition here runs 4 to 8 months from permit approval to final inspection; a detached ADU runs 6 to 10 months. Fort Lauderdale permit review and hurricane-window requirements add time that a remodel-only job doesn’t have. We give you a written schedule with photo updates at every phase, and if a city inspection delays us, you’ll hear about it the day it happens, not at the next invoice. Call (754) 354-7423 and we’ll give you a realistic timeline for your specific scope.
Often yes, and at a lower price: a kitchen remodel in Fort Lauderdale runs $14,000–$45,000, and a bathroom remodel runs $9,000–$28,000. If the goal is more functional space rather than more square footage, reconfiguring what you have is almost always cheaper than building new. We’ll give you honest numbers for both options before you commit to anything. Call (754) 354-7423 for a free estimate.
We order Kohler fixtures through our supplier network as soon as the rough-in plan is set, but we don’t stock full fixture packages on a shelf. What we do stock on the truck is the supporting hardware: valve depth guides, carriers, supply lines, and Kohler-compatible cartridge tools, so the install isn’t delayed by a missing rough-in part. If you’re also working on other parts of the house, we regularly install KraftMaid, Cambria, and Silestone products alongside Kohler finishes. Call (754) 354-7423 to check current availability on a specific Kohler model.
No, and that’s in writing. The price you approve before we start is the price you pay unless you change the scope yourself. If we open a wall and find something that genuinely changes the plan, we stop and bring you photos and a new written figure before any additional work happens. The Relay Standard covers this on every job: live arrival times, photo updates, and a written price before a single tool is picked up. Call (754) 354-7423 and we’ll send a written estimate.
Call Sawyer Remodel Fort Lauderdale for Your Kohler Addition or ADU
If you’re planning a home addition or ADU in Fort Lauderdale and want the Kohler fixtures done right the first time, call (754) 354-7423 for a free estimate. Luca Romano answers his own phone most days, and if he doesn’t, a live person does, because that’s how we’ve run jobs since 2005. You get a written price before work starts, background-checked uniformed technicians on-site, photo updates at every phase, and a full year of accountability after the job closes. The work either holds up or it doesn’t, we make sure it does.
Written by Luca Romano, Owner & Lead Contractor, Sawyer Remodel Fort Lauderdale at Sawyer Remodel Fort Lauderdale, serving Fort Lauderdale and nearby areas.
