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Tremron Home Additions & ADU: The Tampa Owner’s Guide
Home additions and ADUs built with Tremron pavers and retaining wall block in Tampa typically run $45,000 to $130,000 installed, depending on square footage, foundation work, and whether we’re tying into existing block or starting fresh. Most homeowners call us after discovering their Tremron hardscape foundation has shifted, a retaining wall has begun to lean, or the paver base under an existing addition has failed and the floor no longer sits level. We stock Tremron-compatible block, paver base materials, and wall caps on our trucks for Tampa jobs, and we can usually assess the failure and give you a written price the same week. If your Tremron wall block is cracked, spalled, or the base course has washed out, the fix usually means excavation, re-compaction, and re-laying the block with proper drainage behind it.
We’re an independent contractor in Tampa, not affiliated with Tremron, but we work with their product lines every week and know exactly which block sizes and paver thicknesses match which application.
Which Tremron Models This Applies To
Tremron manufactures concrete pavers, retaining wall block, and hardscape materials in several Florida-oriented product lines. The ones we deal with most on Tampa additions and ADUs are the retaining wall systems (the Melbourne and Jacksonville lines are common here), paver lines rated for vehicular or pedestrian loads, and the bullnose/coping units used to cap walls and finish stair treads. The compatibility gotcha most homeowners run into is this: Tremron changes block dimensions across manufacturing plants, and a paver bought from the Miami plant may sit 1/8 inch different from the same style poured in Jacksonville. If you’re matching existing block, we need the original product code or a physical measurement of the unit before we order anything. Guessing at this creates a visible seam in the wall that no amount of polymeric sand will hide.
For most Tampa additions, OEM Tremron block is the right call when the existing structure is visible and the match has to be exact. For the buried base course, a quality aftermarket concrete block with the same compressive strength and dimensions does the same structural job for less money, and we’ll tell you when that’s an acceptable substitution and when it’s not. On load-bearing walls under a new ADU slab, we don’t substitute. The structural engineer’s spec controls the material, and we buy exactly what’s called out.
Styles & brands we work with
Signs Your Tremron Home Additions & ADU Is Failing
- Wall lean or bulge at the face. This almost always means hydrostatic pressure behind the wall from Tampa’s summer rain cycle. No drainage gravel, no weep holes, no wall. The fix requires pulling the block, installing proper drainage, and re-laying. If you wait, the wall fails outward and the structure above it moves with it.
- Pavers sinking or rocking underfoot. Loose or washed-out base material underneath. In Tampa’s sandy soil, a poorly compacted base settles within two wet seasons. You’ll feel it when you walk on it before you see it.
- Efflorescence or spalling on block faces. White mineral deposits mean water is moving through the block, not around it. Over time the block face pops off in sheets. It’s cosmetic early, structural later if the block is load-bearing.
- Cracks running through multiple pavers in a line. That’s a base failure, not a paver failure. Pavers rarely crack on their own. A line crack means the subgrade gave way beneath them, and replacing individual pavers won’t fix it.
- Gaps opening between wall courses. Block that was laid tight now showing daylight means settlement or lateral movement. On a wall supporting an addition or ADU slab, that’s a call you make the day you see it.
Replacement Cost & What’s Included
In Tampa, the installed price for a full home addition or ADU build runs $45,000 to $130,000, and Tremron wall or paver repair work inside that scope varies by how much block has to come out and what’s underneath it. A retaining wall re-lay typically falls in the $3,500 to $11,000 range depending on wall height and access. A paver patio or walkway subgrade repair runs $3,500 to $11,000 for a full tear-out and re-install. Those numbers include excavation, base material, block or pavers, drainage material, labor, and haul-off of the old material.
| Scope | Installed Range |
|---|---|
| Home addition (full build) | $45,000 – $130,000 |
| ADU construction | $90,000 – $220,000 |
| Garage conversion | $30,000 – $80,000 |
| Retaining wall re-lay (Tremron block) | $3,500 – $11,000 |
| Paver patio/subgrade repair | $3,500 – $11,000 |
Every line item is written before we start, and the number doesn’t move at the door. All completed work carries the 365-Day Done Right Promise: if it fails within a year, we come back and correct it at no charge. That guarantee is written into the contract, not mentioned in passing.
See the difference
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AfterDIY or Call Us?
What you can safely check on your own: walk the wall and mark any bulges with chalk so you can see if they’re moving week to week. Check for clogged weep holes and clear them with a dowel if you can reach them. Look at your downspouts and confirm they’re discharging away from the wall face, not behind it. Those are useful diagnostics.
What you should not do yourself: re-lay retaining wall block that’s holding back soil or supporting any part of a structure. A failed wall can release suddenly when you start pulling block, and the weight of the soil behind it doesn’t care about your intentions. Tampa’s wet season puts thousands of pounds of pressure behind even a four-foot wall. This is not the corner of the job to save money on. Call us at (941) 655-9297 and we’ll give you a written assessment before any work starts.
FAQs
Tremron concrete block and pavers last 25 to 40 years in Tampa when installed over properly compacted base with drainage behind the wall. What fails first is almost never the block itself. It’s the base material washing out, the drainage clogging, or the subgrade settling. Block doesn’t fail; installations fail. Call us at (941) 655-9297 for an exact assessment of what’s failing on your site, and we’ll put the repair price in writing before we touch a tool.
Yes, if the block itself is intact and the issue is drainage or minor settlement, we can often pull the affected section, fix the base and drainage, and re-lay the same block. If the block is cracked, spalled, or the wall has moved more than an inch or two out of plane, repair turns into rebuild. We’ll tell you which one you have, and the written quote reflects only the work that’s actually needed.
A typical retaining wall re-lay or paver base repair in Tampa takes two to five working days depending on wall height, access, and how much base material has to be removed and replaced. A full addition build takes months. We schedule the repair and hold to it, and you’ll know before we start what the cleanup looks like at close-out.
We keep the most common Tremron retaining wall block, caps, and paver base materials on our trucks for Tampa jobs. For full-pallet replacement or less common sizes, we order directly and typically have material on site within a few days. If you’re matching existing block, we’ll need the product code or a physical measurement before ordering. Call (941) 655-9297 and tell us what you have. We’ll tell you straight whether we can match it.
Get a Written Price Before Any Work Starts
We’re Bradford Remodeling Co Tampa, part of the Garrison Partners family since 2004. Every project we do runs on The Garrison Standard: a written price before work begins, a documented scope, background-checked and uniformed technicians on site, and a signed guarantee in your hand at close-out. Curtis Lane learned the trade at Los Angeles Trade-Technical College and has spent over two decades on Florida job sites, including projects in Tampa’s Seminole Heights neighborhood where the older bungalow stock keeps you honest about what load-bearing actually means. Straight number, clear scope, no surprises at close-out. Call us at (941) 655-9297 for a free estimate on your Tremron repair, addition, or ADU project. A live person answers, 24/7.
Written by Curtis Lane, Owner, Bradford Remodeling Co Tampa at Bradford Remodeling Co Tampa, serving Tampa and nearby areas.
