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A new rear addition with a vaulted beamed ceiling and tall windows

Oldcastle Home Additions & ADU Nationwide

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A single-story rear room addition with tall windows and a new patio
A second-story addition that matches the existing roofline
A built-in window seat in a bay window
A dining nook with a built-in banquette
A home office with a built-in desk and shelves
A remodeled kitchen with a waterfall island and wood cabinets
A wood double vanity with two mirrors after a bathroom remodel
An open living space after a whole-home remodel
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Oldcastle Home Additions & ADU: The Long Beach Owner’s Guide

If you’re researching Oldcastle home additions or an ADU in Long Beach, you’re likely weighing a $45,000 – $130,000 project on a home you plan to stay in for years. We’re Elmstead Remodeling Long Beach, and while we’re an independent contractor (not affiliated with Oldcastle), we install and work with Oldcastle-compatible products every season, including paver systems, masonry units, and site materials that carry the Oldcastle name. The most common way families reach us is a failed concrete paver or a retaining wall unit that’s shifted after a rainy winter, followed by the realization that the small fix is really a bigger structural conversation. Below you’ll find exactly how we price this work, which Oldcastle products we’re comfortable matching, and what we’ll protect inside your house while the crew is there.

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Which Oldcastle Models This Applies To

A garage converted into a guest room and home office

Oldcastle’s product lines that surface in Long Beach home additions and ADUs fall into three groups. First, Oldcastle APG masonry units: patio pavers, ladder-and-lattice retaining wall blocks, and Allan Block-style segmental wall systems. Second, Oldcastle infrastructure-grade concrete products: pavers, curbing, and slab-on-grade materials that show up in driveway or ADU foundation approaches. Third, Oldcastle StormCapture or Belgard-branded drainage and paver lines, where the packaging still carries the Oldcastle parent name. Compatibility matters on the exact block shape, height, and interlock pattern: a Highland Stone wall block does not accept a Dublin Cobble cap, and mixing brands mid-wall will show in the joint lines within a year.

The honest OEM-versus-aftermarket conversation is simpler for Oldcastle than for many brands. Oldcastle masonry is modular. A quality aftermarket block that matches the face dimension and lip depth will usually lock correctly, but color lot variation across manufacturers is real, especially with tumbled or variegated pavers. If you have half a pallet of original Oldcastle pavers left from the first installation, we’ll use them first and match new material from the same manufacturer where possible. If the original product is discontinued, we’ll tell you before ordering a substitute, and we’ll show you a sample next to the existing stone before the purchase order is placed.

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Styles & brands we work with

Kitchen remodeling
Kitchen remodeling
Bathroom remodeling
Bathroom remodeling
Home additions & ADU
Home additions & ADU
Roofing
Roofing
Windows & doors
Windows & doors
Driveway & pavers
Driveway & pavers

Signs Your Oldcastle Home Additions & ADU Is Failing

  • Pavers sinking in the first two feet of the new addition’s walkway. This usually means the base wasn’t compacted in lifts to 4 inches after each layer. In Long Beach’s clay-dominant soil, that base settles unevenly after the first winter rain.
  • Retaining wall blocks leaning outward at the top row. Behind that lean is almost always hydrostatic pressure from missing or clogged drainage gravel, or a wall built past its intended height without a geogrid tie-back.
  • Visible gaps growing between Oldcastle paver joints in summer. Polymeric sand fails when it wasn’t swept deep enough or activated properly. Long Beach’s salt air and occasional 90°F days make that joint sand brittle faster than inland areas.
  • Cracks running straight across a slab or foundation approach. A long, straight crack suggests a missing expansion joint or a slab pour over uncompacted fill. This is the one to call about same week; water entry expands the damage in months.
  • Drainage channels that hold water 24 hours after rain. Oldcastle StormCapture and similar systems fail when the outfall pipe was undersized or silted. In Long Beach’s flat lots, standing water is a structural concern, not a surface annoyance.
Before & after

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Recent Project
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Full Restoration
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Complete Upgrade

Replacement Cost & What’s Included

Home additions involving Oldcastle masonry work in Long Beach typically run $45,000 to $130,000, with the range set by excavation depth, retaining-wall height, and whether your project needs a geotechnical report. A standalone paver patio or wall repair within an existing addition runs lower, usually in the $3,500 to $11,000 range, depending on footage and whether we’re removing and re-using the existing stone or starting over. Because you’re reading this before work begins, you should know: we give a written price before any work starts, and that price includes the base prep, compaction, geogrid where code requires it, drainage gravel, edge restraints, and polymeric sand.

Our quote also says plainly what’s included beyond the stone. A named brand: Oldcastle or a matched equivalent you’ve approved in writing. A fixed price, not a starting point. The crew works in shoe covers inside the house and drops cloths on any path we walk through, including when the addition connects to the main home. The 365-Day Done Right Promise covers the finished work: if something wasn’t done right, we come back and make it right.

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DIY or Call Us?

There are safe checks any Long Beach homeowner can do: confirm the block or paver model stamped on the back of a unit, locate standing water after the next rain, and mark the edge of a wall where leaning appears to be progressing with a pencil line and a date. Re-setting a single paver or two is within reach if you’re patient and the base underneath still compacts solidly. What we don’t recommend doing yourself is any retaining wall over three feet in height, any paver removal over a utility corridor, or any slab repair tied to a permitted addition. Call 811 before you dig. Then call us at (562) 512-7086 if the base problem is more than an inch deep, because that’s a structural issue wearing a paver costume.

FAQs

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Getting started with Elmstead in Long Beach

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