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Tremron Home Additions & ADU: The Austin Owner's Guide
If you have a Tremron paver patio, driveway, or retaining wall on your Austin property and you’re planning a home addition or accessory dwelling unit, the pavers themselves are just the starting point. A home addition in Austin typically runs $45,000 to $130,000, and an ADU construction project lands between $90,000 and $220,000, depending on size, foundation work, and how much of the existing Tremron hardscape needs to be pulled, reset, or extended. Most Austin homeowners discover they need Tremron-specific work mid-project: the crew shows up, starts excavating, and finds the existing pavers are shifting, sinking, or spaced wrong for the new roofline drainage. That’s where we come in.
We’re Penhallow Remodeling Austin, and we’ve been working around Tremron pavers, Belgard blocks, and Unilock systems in Austin long enough to know exactly how they behave when you add square footage next to them. We’re an independent remodeling company, not affiliated with Tremron, which means we’ll tell you straight when an OEM Tremron paver is the right call and when a quality equivalent will save you money without costing you lifespan.
Which Tremron Models This Applies To
Tremron manufactures a wide range of concrete pavers, retaining wall blocks, and hardscape products across several series lines. In Austin, the most common Tremron products we encounter on home addition and ADU sites include the Holland Stone series, Olde Towne pavers, Castlestone retaining wall blocks, and Beacon Hill flagstone-style pavers. Each series has specific dimensional tolerances, and that matters when you’re extending an existing patio to meet a new addition’s footprint.
Here’s the compatibility gotcha most homeowners don’t know: Tremron changes paver dimensions slightly between production runs and series generations. A paver labeled 6×9 from a run five years ago might be a full eighth-inch different from a current production 6×9. When you’re matching new pavers to an existing Tremron patio around an addition, that difference shows up as uneven gaps and lippage along the seam. We measure the actual installed pavers before ordering anything, because trusting the nominal size is how you end up with a patch that never looks right. For OEM versus aftermarket: Tremron’s color blends are proprietary, so if you need an exact color match, you’ll want OEM pavers from the same series. If the addition involves a brand-new patio section that won’t butt against existing Tremron work, a quality concrete paver from a reputable manufacturer gives you the same structural performance at a lower material cost.
Styles & brands we work with
Signs Your Tremron Home Additions & ADU Is Failing
- Pavers sinking or dipping near the new foundation line. Excavation for an addition disturbs the soil structure beyond the actual dig; Austin’s expansive clay responds by shifting, and pavers that were flat for years start showing low spots within weeks of backfill settling.
- Water pooling against the addition’s slab edge. If the existing Tremron patio wasn’t re-graded during the addition, the new roofline concentrates runoff right where the old pavers meet the new concrete. That standing water works into the paver base and accelerates settlement.
- Gaps opening between pavers and the new wall. A home addition changes the thermal load on the adjacent hardscape; the slab expands and contracts at a different rate than the paver field, and without a proper expansion joint, the seam widens.
- Retaining wall blocks tilting or bowing outward. If your ADU sits on a sloped Austin lot with an existing Tremron retaining wall, the added drainage from the new roof can overwhelm the wall’s original drainage design. The first sign is usually a slight outward lean that gets worse after heavy rain.
- Paver color fading unevenly after new construction. Tremron pavers have UV-stable pigments, but construction traffic, mortar splatter, and changed sun exposure from the new structure can make areas look patchy. It’s cosmetic, but it’s also a clue that the paver surface has been abraded and may need resealing.
See the difference
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After
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AfterReplacement Cost & What's Included
A full home addition in Austin ranges from $45,000 to $130,000 depending on square footage, foundation type, and finish level. ADU construction runs higher, $90,000 to $220,000, because you’re adding a full second living space with its own utilities, kitchen or kitchenette, and bathroom. The Tremron hardscape work within those projects typically represents $3,500 to $18,000 of the total, whether that’s resetting an existing paver driveway, extending a patio to the new addition’s back door, or rebuilding a retaining wall to handle new drainage patterns.
Every job gets a written price before work starts. Not a ballpark, not a verbal number that changes at the door. The number on day one is the number on the invoice. That’s the Kingswell standard, and it’s been that way since 2004. If something fails inside the guarantee period, our 365-Day Done Right Promise covers the fix at no charge, in writing. And if a repair fails, the second visit is free. No service call fee, no re-inspection charge.
DIY or Call Us?
You can safely check a few things yourself: walk the paver field after rain and mark low spots with chalk, check for gaps along the addition’s slab edge, and look for standing water that hasn’t drained within an hour. Those observations help us give you a faster, more accurate estimate when you call.
What you shouldn’t do is pull and reset pavers around a new foundation without understanding sub-base compaction and drainage. Austin’s clay soil expands and contracts aggressively with moisture, and a paver base that isn’t re-compacted after addition work will fail again within a season or two. You’ll pay twice, and the second invoice is always bigger. If the work involves excavating near gas, water, or sewer lines, leave that to a licensed crew. Call us at (325) 225-5429 and we’ll tell you what we’re looking at, give you a real price, and go from there. Tell me what you need, I’ll tell you what it costs, and we’ll go from there.
FAQs
A properly installed Tremron paver patio lasts 25 to 40 years in Central Texas before needing significant base work, though individual pavers may need resetting or replacing every 10 to 15 years as Austin’s clay soil moves through wet-dry cycles.
In most cases, yes. If the pavers themselves are intact and the problem is base settlement, we can pull the affected area, re-compact the base with proper drainage, and reset the original pavers. That typically runs significantly less than full replacement, and we’ll tell you which approach makes sense for your specific situation. Call (325) 225-5429 for an exact quote, estimates are free.
A typical home addition takes 10 to 20 weeks from first dig to final walkthrough, depending on scope and whether you’re dealing with Austin’s permitting process, which currently runs 4 to 8 weeks for residential additions. ADU construction usually runs 16 to 30 weeks because of the full utility work involved.
We source Tremron products directly from local Austin suppliers and coordinate delivery as part of the project. We also work with Belgard and Unilock when the job calls for them, and we’ve installed KraftMaid cabinetry, Cambria countertops, and Silestone surfaces in ADU kitchens. You don’t need to source anything yourself.
Written by Trevor Nash, Owner, Penhallow Remodeling Austin at Penhallow Remodeling Austin, serving Austin and nearby areas.
