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Techo-Bloc Home Additions & ADU: The Fort Worth Owner’s Guide
We install and build home additions and ADUs that integrate with Techo-Bloc hardscape products across Fort Worth, with full project builds typically running $45,000 to $130,000 depending on square footage, foundation work, and utility runs. If you’re planning an addition or detached ADU that needs to tie into existing Techo-Bloc pavers, retaining walls, or steps, we handle the structural build and the hardscape integration as one scope. Most Fort Worth homeowners call us when they realize a mismatched patio edge or a settling slab has turned a straightforward addition into a mess that needs re-grading, re-pouring, and re-setting before framing can even start.
What surprises people is how often the failure isn’t the Techo-Bloc product itself. It’s the base under it. North Texas clay soil moves, and if the original install didn’t account for that movement, the pavers shift, the finished grade throws water toward the new foundation, and the whole addition scope gets complicated. That’s the conversation we have before we talk about wall layout or cabinet runs.
Here’s the bottom line on pricing: a 400-square-foot addition in Fort Worth with a Techo-Bloc patio tie-in will land at the lower end of that range. A full 800-square-foot detached ADU with separate utilities, a kitchenette, and integrated hardscape will push past $100,000. The written price we give you before work starts reflects exactly what we found on site, not a national average.
Which Techo-Bloc Products This Applies To
Techo-Bloc makes a wide line of concrete pavers, retaining walls, steps, caps, and edging, and the compatibility question matters more than most contractors admit. We’ve worked with the Blu 60 and Blu 80 paver lines, the Borealis and Victorien wall systems, and the Raffinato and Travertina slab collections on addition projects in Fort Worth. Each line has its own joint spacing, base thickness requirement, and edge restraint spec, and if the existing install used a different line than what’s still available, you may need a custom transition detail rather than a straight match.
Here’s what you need to know before you call: the product name is stamped nowhere on the paver. You identify it by measuring the paver face (metric dimensions matter), checking the edge chamfer, and matching the color to the current Techo-Bloc catalog. If the original install is more than a decade old, there’s a real chance that exact color lot is discontinued, which is an argument for re-bordering the entire patio edge rather than patching in a few new pieces. We carry a documented list of Techo-Bloc compatibility notes in our project file for every Fort Worth addition we build, and we’ll tell you honestly when a patch will show and when it won’t.
On the OEM-versus-aftermarket question: we spec Techo-Bloc product when the visual match matters and the budget allows. For structural base and drainage components under the pavers, we use open-graded aggregate and geotextile by spec, not by brand loyalty. The holding power is in the base construction, not the paver logo.
Styles & brands we work with
Signs Your Techo-Bloc Hardscape Is Undermining an Addition
- Pavers tilting toward the house. This usually means the base course under the pavers was never compacted to Fort Worth’s clay conditions, and water is now moving the wrong direction. If the slope runs toward your foundation, the addition’s perimeter drainage has to be corrected before framing starts, or you’ll be fighting water inside a brand-new room.
- Visible cracks running through a retaining wall near the planned addition. Techo-Bloc walls hold when the geogrid depth and backfill drainage are right. When they crack or bulge, the wall’s structural duty is compromised, and any addition built uphill of it has a stability problem on day one.
- Paver color is too far off for a patch. If the existing Techo-Bloc install is sun-faded and the new product is fresh from the factory, the patch reads as a scar down the middle of the patio. For additions that require extending a patio or walkway, we often re-border the whole field so the transition is a design decision, not a patch job.
- Settling at the patio-to-foundation joint. Fort Worth’s clay expands and contracts with moisture, and a slab that wasn’t isolated from the paver plane will lift and drop at the seam. That movement puts pressure on the addition’s stem wall and can crack stucco or brick veneer in the first two years.
- Water pooling at the paver edge after a hard rain. Standing water that lingers more than an hour tells you the base isn’t draining. For an addition or ADU, that moisture migrates toward the foundation and becomes a long-term problem that no amount of interior waterproofing will solve from the inside.
See the difference
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AfterReplacement Cost & What’s Included
For a full home addition in Fort Worth that includes Techo-Bloc hardscape work, plan on $45,000 to $130,000. An ADU build with integrated hardscape runs $90,000 to $220,000. What drives the spread is the same thing on every job: soil conditions, existing utility runs, whether the current hardscape has to be demoed and rebuilt at the new grade, and how much of the existing Techo-Bloc can be salvaged and reset.
Every scope we write includes the structural work, the hardscape integration, the utility rough-in, and the finished surfaces. When we remove and reset Techo-Bloc pavers, the line item covers the base rebuild, new joint sand, and edge restraint, not just the labor of picking up and putting down. Our written price is the price. No change orders because we “didn’t see” a problem. If we find something mid-project that wasn’t in the scope, we stop and talk to you before any additional work happens. That’s how the 365-Day Done Right Promise works: if the addition or hardscape fails inside a year, we come back and correct it at no charge.
DIY or Call Us?
For a full addition or ADU, this isn’t a DIY conversation. Permits, foundation engineering, and utility connections in Fort Worth require licensed trades, and a framing error on an addition isn’t like a bad paint job: it’s a structural and safety problem that costs double to undo. Same goes for the Techo-Bloc base work. The pavers themselves aren’t dangerous to handle, but a homeowner who resets them on top of an uncompacted base has just created the exact condition that fails inside two years.
What you can do before calling: measure the existing paver run, note the slope direction, and check for standing water after the next heavy rain. Write it down. That’s a real head start on the conversation. Then call us at (682) 204-4897 and we’ll walk the site with you. The estimate is free. The scope will be straight.
FAQs
Twenty years or more when the base is built right for North Texas clay. The failure we see most often in Fort Worth isn’t the paver wearing out, it’s the base under it: too thin, under-compacted, or installed flat so water sits. A properly built Techo-Bloc patio with a 6-inch compacted base and positive drainage can outlast the house’s first roof replacement. Call (682) 204-4897 and we’ll tell you what condition your existing base is actually in.
Usually yes, if the pavers are structurally sound and the color match isn’t critical across the new area. We salvage and reset Techo-Bloc on addition projects in Fort Worth all the time. What can’t be salvaged is a broken base. The base comes out, gets rebuilt to spec, and the pavers go back on top. The reset labor is often less than buying new product, but the base rebuild is non-negotiable. We’ll write the scope with a clear line for each so you know exactly what you’re paying for.
A single-story addition typically runs 10 to 16 weeks, and a detached ADU with utilities runs 4 to 7 months depending on the foundation and weather. Hardscape integration adds a week or two on the back end if demolition and base rebuild are involved. We sequence the hardscape work last so the heavy equipment isn’t driving over fresh pavers. Every written scope includes a schedule with milestones, so you know what’s happening each week.
We don’t warehouse pavers, which is a good thing. Techo-Bloc products are made in specific color lots, and storing them means fading in the sun and color mismatch on installation day. We order direct per project from Techo-Bloc’s distribution network when the color and size are confirmed against your existing install. That’s how we make sure the match is right before we cut a check for material. Call (682) 204-4897 and we’ll confirm what you have and what’s currently available.
Straight scope, firm price, no surprises at final walkthrough.
Written by Curtis Lane, Owner, Bradford Remodeling Co Fort Worth at Bradford Remodeling Co Fort Worth, serving Fort Worth and nearby areas.
