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Caesarstone Home Additions & ADU: The San Antonio Owner’s Guide
If you’re planning a home addition or ADU in San Antonio and want Caesarstone surfaces in the new space, we stock the full Caesarstone line and install it as part of our addition and ADU builds. A typical home addition in San Antonio runs $45,000 to $130,000, with ADU construction starting around $90,000 and reaching $220,000 depending on square footage and finish level. Caesarstone countertops inside that project add roughly $2,000 to $6,500 for the surface fabrication and installation. Owners usually call us because they’ve gotten a quote from a builder who doesn’t handle Caesarstone, or they tried to coordinate the countertop vendor separately and the timeline fell apart. We do both the structure and the surfaces under one crew, one written price, and one warranty.
Which Caesarstone Models This Applies To
Caesarstone makes its quartz surfaces in a few distinct collections, and the collection matters when you’re matching an existing slab or planning a large addition. The Classico line is the most common in San Antonio homes: 3/4-inch thick slabs in colors like Frosty Carrina, London Grey, and Pure White. The Supernatural collection runs 1 1/4 inches thick and hits a premium price point because of the deeper veining patterns. The Outdoors line is UV-stable, which actually matters here: a San Antonio summer puts brutal sun on any outdoor kitchen or patio addition, and standard quartz will yellow over time. If your addition includes an outdoor cooking area, ask for the Outdoors collection specifically. Most distributors in San Antonio stock Classico in 56-by-120-inch slabs, which means a typical 10-foot kitchen island needs one slab with careful layout, not two. That layout decision is where a fabricator either saves you money or wastes it. The compatibility gotcha: Caesarstone changed its edge profile standards in 2021, so if you’re matching a slab installed before then, the eased edge radius is slightly different. We template every piece before cutting, so the match is exact.
Styles & brands we work with
Signs Your Caesarstone Home Additions & ADU Is Failing
- Hairline cracks radiating from a corner or sink cutout. Quartz is hard but brittle. If the cabinet underneath shifted, or the installer didn’t shim the slab properly, stress concentrates at inside corners. In San Antonio’s clay soil, foundation movement makes this more common than you’d think. The crack usually means the support, not the stone, failed first.
- Visible seam separation where two slabs meet. Caesarstone seams are factory-colored epoxy. If the seam opens up or darkens, moisture is getting in, and the adhesion has broken. In humid San Antonio summers, a failed seam attracts mildew fast.
- Chalky white residue or dull spots that don’t polish out. Acidic cleaners etch quartz surface resins, and hard water from San Antonio’s limestone aquifer leaves mineral deposits that bond to the surface. The etching isn’t reversible, but it’s preventable with the right sealing and cleaning routine.
- Countertop pulling away from the wall, or caulk that cracks within months. The slab isn’t moving on its own. The addition’s framing or the cabinet run is settling. We see this in ADUs built on pier-and-beam foundations where the piers weren’t deep enough for San Antonio’s expansive clay.
- Burn marks or scorch rings near a cooktop area. Quartz is heat-resistant, not heat-proof. Setting a hot pan directly on Caesarstone will discolor the resin permanently. It’s the most avoidable failure, but also the most common one we see in kitchens that get heavy use.
See the difference
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AfterReplacement Cost & What’s Included
If the Caesarstone surface in your existing home or addition needs replacing, countertop installation in San Antonio runs $2,000 to $6,500 depending on slab size, edge detail, and whether we’re doing a straight swap or re-templating. For a full home addition with Caesarstone kitchen and bath surfaces, expect the surface work to be a line item inside your $45,000 to $130,000 addition budget. For an ADU, the total build lands between $90,000 and $220,000, with countertop surfaces typically representing 3-5% of that. Every quote from Mason Remodeling Co San Antonio includes the slab, fabrication, templating, delivery, installation, and cleanup. The written price you get before work starts is the price you pay at the end, no change orders because we measured wrong or the crew hit a snag. The installation itself is covered by our 365-Day Done Right Promise: if the seam fails, the slab shifts, or anything about the install isn’t right within a year, we come back and fix it at no cost.
DIY or Call Us?
A Caesarstone slab weighs roughly 20 pounds per square foot. A typical 30-square-foot kitchen island top is 600 pounds. That’s the short version of why this isn’t a weekend project. The longer version: quartz fabrication requires diamond tooling, water-fed saws, and a careful template process. If you cut wrong, the slab is ruined, and slab cost is the biggest part of the bill. What you can safely do yourself: measure your existing countertops before calling so we can give you a realistic range over the phone, and check whether your cabinets feel level with a basic bubble level. If the cabinets have sagged, the new slab will crack eventually no matter how good the install is. We’ll tell you honestly if the cabinet work needs addressing first. When you’re ready to talk pricing and get a real written number, call us at (254) 269-5071. Isaac Pruett and our San Antonio crew handle the whole thing: framing, cabinetry, Caesarstone, and finish work.
FAQs
Caesarstone quartz has a limited lifetime warranty from the manufacturer for the original owner, and in practical terms a properly installed slab lasts 20 to 30 years before wear becomes visible. The San Antonio factor is heat and hard water: outdoor applications degrade faster if you choose the wrong collection, and indoor slabs need proper sealing against mineral buildup from our water. Interior Caesarstone in a climate-controlled addition will outlast the cabinets it sits on.
A hairline crack can sometimes be filled with color-matched epoxy and made nearly invisible, and we do this regularly for homeowners who want to extend the life of a slab. But the repair only lasts if the underlying cause is fixed: if the cabinet shifted or the foundation is moving, the crack will return. We’ll inspect the support structure before we recommend repair versus replacement. Call (254) 269-5071 for an honest assessment.
For a straight replacement in an existing kitchen, expect one day for templating and one to two weeks for fabrication, then a half-day install. For a new home addition or ADU, the countertop happens at the tail end of the project, after cabinets are set and plumbing rough-in is done. We coordinate the timeline so the surfaces go in once, correctly, without a second trip.
We order per project from Caesarstone’s San Antonio distribution network, which means your slab isn’t sitting in a warehouse picking up damage and you get the exact color and collection you specified. Because we don’t hold inventory, we’re also not pressured to push a color that’s “close enough.” We template, order, fabricate, and install. The free quote you get from us before work starts includes the specific slab you picked, not a generic allowance.
If you’re planning a home addition or ADU in San Antonio and want Caesarstone done right the first time, call Mason Remodeling Co San Antonio at (254) 269-5071. We’ll give you a written price before anything starts, tell you exactly who’s coming to your door, and stand behind the work for a full year. Know who’s coming, know what it costs, know it’s covered – that’s the whole job before the job starts.
Written by Isaac Pruett, Owner, Mason Remodeling Co San Antonio at Mason Remodeling Co San Antonio, serving San Antonio and nearby areas.
