Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Techo-Bloc Home Additions & ADU: The Fort Lauderdale Owner’s Guide
Techo-Bloc home additions and ADU construction in Fort Lauderdale typically runs $45,000 to $130,000 for a full build-out, depending on square footage, foundation work, and finish level. We install Techo-Bloc-compatible hardscape and structural elements as part of these projects, and most homeowners reach out after noticing settlement, cracking, or water intrusion around an existing addition or accessory dwelling unit. If you’re staring at a failing addition or planning an ADU on your Fort Lauderdale lot, here’s what you need to know before you spend another dollar.
Most owners discover something’s wrong the same way: a corner of the addition has settled half an inch, the exterior paver course near the Techo-Bloc wall has shifted, or moisture is showing up where the new slab meets the old foundation. The humid South Florida climate, paired with our sandy, shifting soil, accelerates problems that a properly detailed install would have avoided. Trevor Nash and our team have rebuilt enough of these to know exactly where the shortcuts happen.
Which Techo-Bloc Models This Applies To
Techo-Bloc manufactures a wide range of concrete pavers, retaining wall blocks, steps, and slabs used in home additions, ADU foundations, and surrounding hardscape. The most common series we work with in Fort Lauderdale are the Blu 60 pavers, Industria slabs, and the Borealis and Mista wall systems. Each series has different joint widths, thickness tolerances, and base preparation requirements, which matters when an addition’s exterior elements are being matched to an existing Techo-Bloc installation.
Here’s the compatibility gotcha most owners run into: Techo-Bloc changes paver dimensions between production runs, and a paver bought three years ago may not match a paver from the current run. The color blend also shifts slightly by batch. For a home addition or ADU that ties into existing hardscape, that means you either source a close-but-not-exact match, or you plan for a transition detail that makes the difference invisible. We’ve learned to spec one of those two options before the first block is laid.
As an independent Fort Lauderdale contractor, we are not affiliated with Techo-Bloc directly, but we work with their products daily and know which series are still in production, which have been discontinued, and what aftermarket equivalents hold up in our coastal humidity. For OEM versus aftermarket: on structural wall blocks and pavers, we only recommend genuine Techo-Bloc or a specified equivalent that matches compressive strength and freeze-thaw rating. Florida doesn’t freeze, but the salt air and constant UV are their own test.
Styles & brands we work with
Signs Your Techo-Bloc Home Additions & ADU Is Failing
- Settling or sinking pavers around the addition perimeter. This usually points to an inadequately compacted base or drainage that’s washing fines out from under the paver course. In Fort Lauderdale’s sandy soil, a base without enough aggregate depth will migrate within two or three rainy seasons.
- Cracks in the slab or foundation wall at the addition-to-house connection. The joint where new construction meets old is the single most common failure point we see. If the contractor didn’t install proper expansion material and mechanical ties, differential movement will open a crack within 18 months.
- Water staining or efflorescence on Techo-Bloc wall blocks below knee height. Efflorescence (that white chalky residue) means moisture is moving through the block and pulling minerals with it. In a humid climate, that points to missing drainage aggregate behind the wall or a failed waterproofing layer.
- Retaining wall blocks leaning or bowing outward. This is a structural problem, not a cosmetic one. When a Techo-Bloc wall starts to lean, the soil pressure behind it has exceeded the wall’s capacity, usually due to poor drainage or insufficient buried depth. Do not ignore this one.
- Gaps opening at doors and windows inside the ADU. If interior doors in your addition or ADU start sticking or showing uneven gaps at the top, the floor system or foundation is moving. It may be minor, or it may be the first sign of something more serious underneath.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
For a full home addition in Fort Lauderdale, plan on $45,000 to $130,000. ADU construction runs $90,000 to $220,000, and a garage conversion sits between $30,000 and $80,000. The spread comes down to square footage, whether you’re tying into the existing roofline or building a standalone structure, foundation type, and interior finish level. A 400-square-foot addition with basic finishes lands at the bottom of that range; a 900-square-foot ADU with a full kitchen and bathroom lands near the top.
Every Penhallow Remodeling Fort Lauderdale project includes a written price before any work starts. Not an estimate range, not a verbal ballpark. The number on your written quote is the number on the invoice, period. We also write our 365-Day Done Right Promise into every contract: if something fails inside a year, we come back and fix it at no charge. No service call fee, no re-inspection fee. You get a written guarantee on the work, and we source materials from recognized brands like KraftMaid, Cambria, and Silestone for interior finishes, with Techo-Bloc specified for the hardscape and structural elements.
DIY or Call Us?
You can safely check a few things on your own: look for visible cracking, check whether water is pooling against the foundation after rain, and inspect paver joints for erosion. What you should not do is attempt to shore up a leaning Techo-Bloc retaining wall or jack a sinking slab. The forces involved can injure you, and a temporary fix that fails later costs more than doing it right the first time.
If you’re planning a new addition or ADU, or if you’ve got an existing one showing these failure signs, call us at (754) 551-2922. Trevor Nash will walk the site with you, explain what he sees in plain English, and give you a written number you can actually plan around. That’s how we do every job in Fort Lauderdale.
FAQs
A properly built addition or ADU with correct foundation detailing and drainage will last 50 years or more in Fort Lauderdale, but the exterior Techo-Bloc hardscape around it typically needs re-leveling or joint repair every 8 to 12 years due to our sandy soil and heavy seasonal rain. The structure itself should not move if the base was compacted correctly and the addition-to-house connection was detailed with proper expansion and ties. Call (754) 551-2922 if you’re seeing movement and want an honest assessment.
Yes, in most cases. Settled pavers can be lifted and re-set on a properly compacted base, foundation cracks can be sealed and structurally reinforced, and drainage issues behind Techo-Bloc walls can be corrected without tearing the wall down. Rebuilds are only necessary when the structural framing or foundation has moved beyond what reinforcement can address. We’ll tell you which situation you’re in before quoting any work.
A typical Fort Lauderdale addition or ADU build runs 10 to 20 weeks from permit approval to final walkthrough, with hardscape installation happening in the final 2 to 3 weeks. Smaller repairs like paver re-leveling or wall drainage correction can often be completed in 2 to 4 days. We give you a written schedule before starting, including the arrival window we’ll actually hit.
We don’t stock full pallets of Techo-Bloc inventory on-site, but we order directly from regional distributors and can typically have standard Techo-Bloc series like Blu 60, Industria, Borealis, and Mista on the schedule within 3 to 7 business days in Fort Lauderdale. For discontinued series, we’ll source a compatible equivalent or design a transition detail that works visually. Call (754) 551-2922 for a free estimate.
Written by Trevor Nash, Owner, Penhallow Remodeling Fort Lauderdale, serving Fort Lauderdale and nearby areas.
