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Blanco Home Additions & ADU: The Los Angeles Owner’s Guide
If you own a Blanco home addition or ADU in Los Angeles, you’re likely dealing with a failed component that’s disrupting your space, whether that’s a kitchen fixture, a bath fitting, or a structural element tied to the addition itself. Mason Remodeling stocks and installs Blanco-compatible parts for home additions and ADUs across Los Angeles, with typical installed pricing ranging from $53,100 to $153,400 depending on scope, and most part-specific replacements can be scheduled within days, not weeks. We’re an independent service provider, not affiliated with Blanco, but we’ve worked on enough Blanco-equipped additions across the San Fernando Valley, the Westside, and South LA to know exactly what fails and why.
Most homeowners discover a problem the same way: a kitchen faucet in the ADU starts dripping, a Blanco sink flange loosens, or cabinet hardware from the addition’s original build begins to fail. The part itself is rarely the entire story. Blanco products are well-engineered, but Los Angeles water hardness, seismic movement, and the wear pattern of a secondary dwelling unit that gets daily use all accelerate failure in predictable ways.
Which Blanco Models This Applies To
Blanco’s product lines span kitchen sinks, faucets, and accessory components installed in ADUs and addition kitchens throughout Los Angeles. The key compatibility factor is the sink series: Blanco SILGRANIT composite sinks, stainless steel models like the Performa and Diamond series, and the Culina faucet line all use different mounting hardware and drain assemblies. If you’re replacing a part, the model number is usually stamped on the underside of the sink or on a small tag attached to the faucet supply line.
Here’s the gotcha most Los Angeles owners hit: Blanco changed its drain assembly specs on SILGRANIT sinks in 2016, so a pre-2016 sink won’t accept the current-gen basket strainer without an adapter. We keep both generations on the truck. For OEM versus aftermarket, we recommend OEM Blanco parts for anything that touches water sealing or sink mounting. Aftermarket equivalents are fine for trim rings, accessories, and non-sealing hardware. The difference matters more in Los Angeles than elsewhere because our hard water accelerates corrosion on cheap aftermarket drain fittings, and you’ll be replacing them again in two years.
Styles & brands we work with
Signs Your Blanco Home Additions & ADU Is Failing
- Water staining or swelling under the sink cabinet. This usually means the Blanco drain gasket has compressed or the sink flange seal has failed. In ADUs, this often goes unnoticed longer because the space isn’t used daily.
- A faucet that drips even after tightening. Blanco ceramic disc cartridges wear out predictably, especially with Los Angeles’ mineral-heavy water. The cartridge is replaceable, but if the faucet body shows corrosion at the base, the whole unit is near end of life.
- Sink shifting or a visible gap between the sink rim and countertop. Blanco undermount sinks rely on epoxy and mechanical clips. Seismic settling in Los Angeles, even minor, can break the bond over time. This is a structural issue, not a cosmetic one.
- Drainage that’s slow despite clearing the trap. Blanco’s deep-bowl designs can accumulate mineral scale in the drain channel, especially with hard water in the Valley. If snaking doesn’t fix it, the drain body itself needs replacing.
- Cabinet door hinges or drawer slides failing repeatedly. If the ADU has Blanco cabinetry components, the original builder may have used undersized slides. Heavy pots and pans in an ADU kitchen wear out standard slides fast. We upgrade to soft-close full-extension hardware when we replace.
See the difference
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AfterReplacement Cost & What’s Included
For a Blanco part-specific replacement on a home addition or ADU in Los Angeles, you’re typically looking at $300 to $600 installed for a faucet cartridge or drain assembly, $700 to $1,800 for a full faucet replacement, and $2,500 to $5,000 for a sink replacement that requires countertop work. If the failing part is tied to cabinetry or structural elements within the addition itself, the range widens significantly, from $10,000 for a cabinet refit to $153,400 for a full addition rebuild.
Every Mason Remodeling job starts with a written price before any work begins. You’ll see the part cost, labor, and any disposal fees on paper before you approve anything. Our 365-Day Done Right Promise covers the installation: if anything we touched fails within a year of completion, we fix it at no cost. No change orders, no surprise invoices, no verbal estimates that grow.
DIY or Call Us?
You can safely check a few things yourself: confirm the model number, check whether the shutoff valves under the sink actually work, and note whether the water damage is fresh or old. That information helps us bring the right parts the first time. What you shouldn’t do is attempt a sink or faucet replacement on a Blanco undermount install. The seal between sink and countertop is load-bearing, and an incorrect epoxy or a missed clip means water intrusion into the cabinet and flooring below. In an ADU, where the unit may sit unoccupied for days, a slow leak becomes mold and rot before anyone notices.
If you’re in Los Angeles and the part is failed or failing, call us at (803) 680-2547. We’ll tell you over the phone whether it’s a truck-stock fix or a scheduled replacement, and you’ll get a written price before we touch a wrench.
FAQs
In Los Angeles, a Blanco stainless steel sink typically lasts 15 to 25 years, while a SILGRANIT composite sink can go 20-plus years with proper care. Faucets are shorter-lived here because hard water accelerates cartridge wear, so expect 8 to 12 years before a cartridge or full faucet replacement. Call (803) 680-2547 for an exact assessment of your setup.
Faucet cartridges and drain gaskets are routinely repairable, and that’s usually the right call if the surrounding components are in good shape. A corroded faucet body or a failed sink-to-counter seal generally means replacement is cheaper than repeated repairs. We’ll walk you through the math on the phone before you commit to anything.
A faucet cartridge or drain assembly swap takes 45 minutes to 90 minutes on site. A full sink replacement with countertop work usually takes one day, including cleanup. Cabinetry work tied to a home addition or ADU runs longer, and we’ll give you a written timeline with your written price.
We stock the most common Blanco drain assemblies, cartridges, and mounting hardware on our trucks for Los Angeles service calls. Special-order Blanco components usually arrive within three to five business days. We also work with KraftMaid, Cambria, and Silestone components for additions and ADUs, so if the failed part is adjacent to a Blanco component, we can address the whole area in one visit.
Written by Isaac Pruett, Owner, Mason Remodeling at Mason Remodeling, serving Los Angeles and nearby areas.
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