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Belgard Home Additions & ADU: The Los Angeles Owner’s Guide
When an existing Belgard paver or wall system becomes the base for a new home addition or ADU in Los Angeles, the work is not a simple parts swap. It is a structural extension that ties new footings, stems, and living space into a hardscape system that was never engineered to carry a roof. Elmstead Remodeling installs Belgard-compatible hardscape transitions for home additions and ADUs, with Los Angeles project pricing ranging from $53,100 to $153,400, and we schedule the first walkthrough within days, not weeks. Most owners call us after a contractor points at the old pavers and says the words we all dread: “that base is not going to hold.” What usually follows is confusion about who removes the Belgard, who reuses it, and whether the new addition needs an entirely different foundation. We walk families through that question with a written scope and a price before any pavers move.
Key Takeaways:
- Belgard block and paver systems under a new addition usually need perimeter saw-cutting, re-compaction, and a new edge restraint, not full removal.
- Home addition work in Los Angeles that touches existing Belgard surfaces runs $53,100 to $153,400, with ADU construction that includes hardscape rework starting higher at $106,200.
- Elmstead Remodeling is an independent contractor; we install and integrate Belgard products but are not affiliated with Belgard.
- Graham Stein, our owner, signs off on every written scope before any crew moves a single paver.
Which Belgard Models This Applies To
We see this come up most often with three Belgard product families in Los Angeles: the Mega-Arbel and Mega-Lafitt paver lines, the BelAir wall system, and the Dublin Cobble and Urbana stone series used for patios and walkways that butt against the house. The compatibility question is never just “which paver is this” – it is “which base profile is under it and does the new addition’s foundation plan call for cutting into that base?”
Here is the gotcha that catches people: Belgard manufactured paver thickness specs vary by line. Mega-Arbel runs 60 mm in standard applications, while commercial-spec Mega-Lafitt can run 80 mm. If the addition’s foundation detail was drawn assuming a 60 mm paver and the existing patio is 80 mm, the curb reveal changes and the step height at the new door threshold changes with it. That half-inch matters for ADA entry compliance in Los Angeles, and it is exactly the kind of detail we check against the existing paver, not the plan sheet. For owners trying to identify their existing Belgard, look at the underside of a lifted paver or the original installation tag; Belgard stamps are not always visible from the top. We match replacements by thickness, chamfer profile, and the color blend batch, not by a name alone.
Aftermarket equivalents exist for edging and polymeric sand, but for the paver surface itself we recommend OEM Belgard where the addition ties visibly into existing hardscape. Color blends drift over production years, and a visually mismatched aftermarket paver next to a ten-year-old Belgard patio is not something a re-skim can fix. Our trucks carry unopened Belgard pavers, edge restraints, and compactible base for the most common Los Angeles projects, and we order the rest by verified lot number.
Styles & brands we work with
Signs Your Belgard Home Additions & ADU Is Failing
- Settlement around the existing patio or walkway edge, visible as a dipping paver line where the new footing will land. This usually means the base under the Belgard lost compaction, and adding foundation weight above it will worsen the dip within the first two years.
- Hairline cracks radiating from old expansion joints into the paver field. Pavers themselves do not usually crack; what cracks is the laid pattern under lateral movement from tree roots or poor edge restraint, and new footings adjacent will transfer that movement.
- A paver or wall block line that has pulled away from the house slab or stem wall by more than a quarter inch. In Los Angeles clay soil, that gap opens and closes with seasonal moisture, and a new addition needs the gap addressed before concrete is placed or the slab will mimic the movement.
- Water pooling against the house foundation at the Belgard transition after rain. This means the original paver base lost its positive slope away from the structure, and once the addition is up, that water has nowhere to go but under the new sill plate.
- Loose, rocking pavers where the addition door threshold will be. A rocking paver under a threshold is a hollow base story; we remove and re-set them with compacted base and geotextile, because the threshold is the highest-traffic point of the entire addition.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
For Los Angeles homeowners, a full home addition that includes Belgard hardscape rework, new foundation, framing, finish, and tie-in to the existing landscape runs $53,100 to $153,400. An ADU construction project with Belgard patio or walkway work integrated starts at $106,200 and runs to $259,600 for a full detached unit. These are installed prices, not parts-only numbers, and they include the labor to remove, re-base, and re-lay any Belgard surface the addition touches.
| Project Scope | Los Angeles Installed Range |
|---|---|
| Home Addition (full build, Belgard integration) | $53,100 – $153,400 |
| ADU Construction (full build, Belgard rework) | $106,200 – $259,600 |
| Garage Conversion (where Belgard surfaces touch) | $35,400 – $94,400 |
| Paver Patio Installation (standalone, for reference) | $4,130 – $12,980 |
What moves the number: whether the addition is permitted or non-permitted (we pull permits and pass inspections on every job), whether the lot is on a hillside or flat, whether the Belgard base needs full re-compaction or just edge work, and whether the new structure is one story or two. Every Elmstead project includes the written price before any work starts, and that price is the price. The 365-Day Done Right Promise applies: if something we set is not right after the job, we make it right.
DIY or Call Us?
Owners can safely do two things before calling: document the current paver line against the house with photos and a level, and mark where water pools after the next rain. That information saves us a full site visit. What an owner should not DIY is cutting into a Belgard base under an existing wall or structure. Once you lift pavers supporting a load, you change the path of that load, and a home addition is exactly the wrong place to find out the base was load-bearing. In Los Angeles’ expansive clay, a wrong cut or under-compacted fill shows up within one rainy season as a cracked stem wall.
If you are planning an addition or ADU around existing Belgard surfaces, call (949) 850-9896. We will walk the site, check the paver thickness and base profile against the plan, and give you a written scope. The written scope is the promise – if it is not on the paper, we have not agreed to it yet.
FAQs
With proper re-compaction and edge restraint at the time of the addition, a Belgard paver system integrated into the new foundation detail should last 25 to 40 years in Los Angeles before significant base work. The limiting factor is not the paver itself; it is the compacted base settling under Southern California’s wet-dry clay cycles. Call (949) 850-9896 for an assessment of your existing base before the addition plans are final.
Yes, in most Los Angeles additions the existing Belgard pavers can be lifted, cleaned, and re-laid after the base is re-graded and re-compacted. We reuse what is sound and replace what is cracked or spalled, matching the new pavers to the existing production lot where possible. Call (949) 850-9896 and we will tell you from the walkthrough how much of your existing Belgard can be saved.
The hardscape removal, re-base, and re-lay portion of a Los Angeles home addition usually takes 3 to 7 working days, depending on square footage and whether the base needs full replacement or just edge re-compaction. We sequence it so the foundation crews are not standing around and the pavers are re-laid before the addition is weather-tight. Call (949) 850-9896 for a written schedule with your scope.
We stock the most common Belgard pavers, edge restraints, and compactible base on our trucks, and we order the rest by verified lot number and production date to match your existing color blend. Elmstead Remodeling also works with KraftMaid, Cambria, and Silestone on finish packages for the additions themselves, so the Belgard outside and the stone inside come from one written scope. Call (949) 850-9896 and we will have the pavers checked against your existing field before any concrete is placed.
Written by Graham Stein, Owner, Elmstead Remodeling at Elmstead Remodeling, serving Los Angeles and nearby areas.
