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Unilock Home Additions & ADU: The Fort Worth Owner’s Guide
If you’re planning a home addition or ADU in Fort Worth using Unilock pavers, retaining wall blocks, or outdoor living components, the installed cost typically lands between $45,000 and $130,000 depending on square footage, site prep, and foundation work. Most owners discover they need help when their existing Unilock hardscape starts shifting, sinking, or separating at the seams, which can compromise the structural base the addition will sit on. Sawyer Remodel Fort Worth handles the full build, from foundation through framing to final Unilock integration, and we stock the materials needed to match your existing products.
Which Unilock Models This Applies To
Unilock runs several product lines that show up in Fort Worth additions and ADUs, and the compatibility questions differ by series. The EnduraColor line has a protective coating baked into the paver surface, which affects color matching if you’re extending a patio or walkway as part of an addition. The Estate Series (used for larger retaining walls and site terracing before an ADU goes in) uses thicker, heavier units that need a proper gravel base and drainage layer behind them. The Town Hall and Promenade lines are common for driveways and walkways leading to the new structure.
Here’s the compatibility gotcha most Fort Worth homeowners run into: Unilock discontinues colors and sizes without much notice, so matching a 10-year-old paver with a brand new one off the shelf can leave you with a visible seam that looks intentional in all the wrong ways. We check the back of an existing unit for the series stamp and measure the actual dimensions before ordering. In many cases, a quality aftermarket equivalent from a manufacturer like Belgard or Techo-Bloc can match closely, but if you’re dealing with EnduraColor faded in the Texas sun, you’re better off pulling a unit and having a local supplier do a side-by-side match. We carry common Fort Worth-spec units on the truck for the lines that get requested most often.
Styles & brands we work with
Signs Your Unilock Home Additions & ADU Is Failing
Most failed Unilock work gives you warning signs long before it becomes a structural problem under a new addition. Here’s what we see on Fort Worth job sites:
- Sinking or settling pavers around the existing foundation. This usually means the base material wasn’t compacted properly or water has washed fines out from underneath. In Fort Worth’s clay-heavy soil, we see this after drought-rain cycles where the ground swells and contracts.
- Gaps opening between units at the edges of walkways or patios. Edge restraint failure. Without a solid border locked in, pavers drift outward over time, especially on sloped lots in Arlington Heights or Tanglewood.
- Retaining wall blocks leaning or bulging at the midpoint. Drainage behind the wall is failing, or the wall wasn’t built with enough setback per course. A leaning wall next to where an ADU foundation will go is a fix-it-now situation, not a wait-and-see.
- Efflorescence (white chalky film) that keeps coming back after cleaning. Water is moving through the units and depositing minerals on the surface. This points to a drainage issue under or around the intended addition footprint.
- Cracks radiating through multiple pavers in a straight line. That’s a base failure or a point load issue, often where a downspout discharges or where vehicle traffic crosses a pedestrian-rated paver. If an addition will sit on or near this, the base needs to be redone before framing starts.
See the difference
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AfterReplacement Cost & What’s Included
A full home addition in Fort Worth with Unilock hardscape integration runs $45,000 to $130,000 installed. Here’s what drives that spread:
- Square footage and complexity: A simple bump-out with a small paver patio costs less than a two-story addition with a full retaining wall rebuild and new paver driveway.
- Site prep: Fort Worth dirt moves. If we’re cutting into a slope or dealing with expansive clay, expect more in excavation and base work before the first block or paver goes down.
- Unilock material costs: EnduraColor and Estate Series units run higher than basic lines, and matching existing colors can mean sourcing from multiple suppliers to get the right batch.
- Foundation and drainage work: Any addition that touches existing Unilock hardscape means we’re tying into current base conditions. If the base is shot, that’s a line item, not a surprise at the end.
Every quote from Sawyer Remodel Fort Worth includes a written line-item price before work starts. The 365-Day Done Right Promise covers the workmanship on the hardscape and the structure for a full year. If something shifts or separates, we come back and make it right, no argument.
DIY or Call Us?
Some Unilock work is genuinely approachable for a homeowner. Replacing a single cracked paver, resetting a few units that have drifted, or adding polymeric sand between joints is reasonable weekend work. You’ll need a rubber mallet, a level, and patience, and you can buy single units from most Fort Worth landscape supply yards.
The line where DIY goes wrong is when the base has failed, the wall is leaning, or the addition involves any structural component. Compacting a proper gravel base under a paver driveway or ADU approach requires plate compactors and knowing how many lifts of material you can run before the clay underneath protests. Building a retaining wall over 3 feet tall in Fort Worth also means following city setback and drainage requirements. If the work touches a foundation, framing, or anything load-bearing, call (682) 841-6652. Luca Romano and the crew will walk the site with you and tell you straight what needs fixing and what can wait.
FAQs
Expect 20 to 30 years from properly installed Unilock hardscape in Fort Worth, with the caveat that the base material and drainage matter more than the paver itself. Clay soil movement shortens that lifespan if the base wasn’t compacted in lifts. EnduraColor units hold their finish longer than uncoated lines under Texas UV.
Often yes. Settled pavers can be lifted, base material added, and units relaid. Leaning walls under 3 feet can sometimes be dismantled and rebuilt with proper drainage. But if the base has completely failed or the wall is beyond repair, replacement is cheaper than patching repeatedly. Call (682) 841-6652 for an exact assessment, estimates are free.
Plan on 8 to 20 weeks depending on scope. A simple paver patio tied to a bump-out runs shorter. A full ADU with site work, retaining walls, foundation, framing, and finish work takes the longer end. We’ll give you a written schedule with the quote, and the Relay Visibility Guarantee means you get photo updates and live arrival times throughout.
We carry common Unilock units, edge restraints, polymeric sand, and base materials on our trucks for the Fort Worth area. Oddball colors or discontinued series get matched through local suppliers. We also work with KraftMaid, Cambria, and Silestone products for interior finishes, so the whole addition stays under one roof. Call (682) 841-6652 and we’ll confirm what’s on hand before we roll.
Ready to get a written price on your Unilock home addition or ADU in Fort Worth? Call (682) 841-6652 and schedule your free estimate. Luca Romano will walk the site, talk through the plan, and put the number in writing before any work starts. The work talks. We just back it up.
Written by Luca Romano, Owner & Lead Remodeler, Sawyer Remodel Fort Worth at Sawyer Remodel Fort Worth, serving Fort Worth and nearby areas.
