Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Techo-Bloc Home Additions & ADU: The Austin Owner’s Guide
Techo-Bloc hardscape products, from pavers to retaining walls, show up all over Austin home additions and accessory dwelling units, and when a section fails or a homeowner wants the addition to match the existing Techo-Bloc work, we handle the replacement and installation. Typical installed costs for a home addition using Techo-Bloc materials in Austin run $45,000 – $130,000, while a full ADU with Techo-Bloc hardscaping and foundation work lands between $90,000 and $220,000. Most owners discover the problem the same way: a paver shifts and creates a trip hazard, a retaining wall starts leaning after a heavy spring rain, or a new addition’s hardscape simply does not match the original Techo-Bloc color and texture that came with the house.
We are an independent Austin contractor, not a Techo-Bloc dealer or affiliate, but we work with Techo-Bloc products regularly and know their series lines, sizing, and the pairings that hold up in Central Texas heat and clay soil.
Which Techo-Bloc Models This Applies To
Techo-Bloc organizes its products into series lines, and the one you have matters more than most homeowners expect. The Blu 60, Blu 80, and Industria series are the ones we see most often in Austin additions and ADUs, each with different paver thicknesses, joint widths, and base requirements. A Blu 60 paver is 60mm thick and works for patios and walkways, while Blu 80 is 80mm thick and built for driveways. Mixing them on the same project is a mistake we see too often: the thinner paver shifts under load and the joint lines never line up.
To identify your Techo-Bloc product, check the underside of a loose paver or the back face of a wall block. Techo-Bloc stamps a product code there, usually a short number-and-letter string. If the stamp is worn off, measure the thickness in millimeters and the face dimensions, then match against Techo-Bloc’s published spec sheets. For an addition or ADU, the original installer’s paperwork often lists the series, but if you do not have it, we can identify the product on site during the estimate visit. When it comes to OEM versus aftermarket, Techo-Bloc is the only source for exact color and texture matches. Aftermarket equivalents exist for base materials and joint sand, but for the visible surface, OEM is the way to go if you care about the addition blending with the existing work.
Styles & brands we work with
Signs Your Techo-Bloc Home Additions & ADU Is Failing
- Pavers rocking or tipping underfoot. This usually means the base layer (typically crushed limestone in Austin) has eroded or was too thin from the start. Clay soil expands and contracts with moisture, and without a proper base, the pavers lose support.
- Joint sand washing out after rain. Austin’s spring downpours expose poor edge restraints or missing polymeric sand. Once the joints empty, pavers start shifting laterally, and the problem accelerates.
- A retaining wall leaning or bulging. Techo-Bloc wall systems depend on proper drainage behind the wall. When the drainage stone or perforated pipe is missing or clogged, hydrostatic pressure builds and pushes the wall outward. This is the most common structural failure we repair in Austin additions.
- Color fading unevenly across a new addition. Techo-Bloc products use a manufacturing process that produces consistent color from the factory, but if the addition’s pavers were sourced from a different production run than the original, the color can be noticeably off. This matters most when an ADU’s patio transitions into the main home’s existing hardscape.
- Settling that creates a visible dip or low spot. Austin’s expansive clay soil is notorious for this. A low spot that collects water after rain means the base has settled unevenly and will only worsen without a proper re-level and compaction.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
For a typical Austin home addition with Techo-Bloc hardscape, plan on $45,000 – $130,000 depending on square footage, the specific Techo-Bloc series, and whether the work includes structural elements like footings, electrical, and plumbing. A full ADU with Techo-Bloc material integration runs $90,000 – $220,000 in the Austin market. If the scope is limited to a patio or walkway replacement using Techo-Bloc pavers, the cost aligns with our paver patio installation range of $3,500 – $11,000.
Every project gets a written price before work starts, and that price includes the Techo-Bloc materials, base prep, installation labor, and edge restraints. No surprise invoices. No verbal estimate that grows. Our 365-Day Done Right Promise covers the workmanship for a year from completion, and if something is not right, we return at no charge.
DIY or Call Us?
There are a few things an Austin homeowner can safely check without calling anyone. If a single paver is rocking slightly, you can lift it, add a little more base material, and reset it. But as Isaac Pruett will tell you: “Tell me what’s wrong with it. We’ll figure out what it actually needs.” The problem is that most Techo-Bloc failures do not start with one paver. They start with a base that is failing underneath, and resetting one paver just buys a few months before the same issue returns. A leaning retaining wall is not a DIY fix, period. The weight of the blocks and the soil behind them can cause serious injury if handled wrong, and the drainage fix requires equipment and experience. For an addition or ADU, if the failure involves settling, drainage, or structural wall movement, call us at (903) 623-1966. We will assess it honestly and tell you if it is a simple fix or a full base rebuild.
FAQs
Techo-Bloc pavers themselves typically last 25 to 40 years in Austin’s climate, but the base underneath usually needs attention at the 10 to 15 year mark, especially on clay soil. The paver rarely fails; the installation does. Call (903) 623-1966 if you are seeing settling or shifting and want an honest assessment.
Yes, in many cases a section can be lifted, the base corrected, and the same pavers reinstalled, which costs significantly less than full replacement. The exception is when the color match from the original installation is already off, in which case matching new OEM pavers to the existing section is the only way to get a clean transition.
A standard patio or walkway replacement using Techo-Bloc materials usually takes 2 to 5 days in Austin, depending on square footage and weather. A larger addition or ADU project with full hardscape integration runs weeks, not days, and we lay out the timeline in the written estimate before any work begins.
We do not keep Techo-Bloc pavers and wall blocks sitting on a shelf, because the series and color options are too varied to stock effectively. We order OEM Techo-Bloc products directly for each job, and we also work with KraftMaid, Cambria, and Silestone for interior finishes on additions and ADUs. Our material partners deliver quickly to Austin, and we confirm lead times in writing before the estimate is final.
Written by Isaac Pruett, Owner, Mason Remodeling Co Austin at Mason Remodeling Co Austin, serving Austin and nearby areas.
If your Techo-Bloc hardscape on an Austin home addition or ADU is shifting, settling, or just does not look right, call (903) 623-1966 for a free estimate. A live person answers, and we will give you a straight answer on what it will take to fix it.
