ActiveYards Home Additions & ADU Nationwide

ActiveYards Home Additions & ADU: The Pomona Owner’s Guide

We stock and install ActiveYards-compatible structural components and hardware for home additions and ADU projects in Pomona, with typical installed pricing from $45,000 to $130,000 for full additions and $90,000 to $220,000 for detached ADUs. Most Pomona homeowners discover their ActiveYards system needs attention when they notice settling cracks near the addition junction, water intrusion at the wall-roof transition, or hardware corrosion that shows up during our photo-documented inspection. In the older neighborhoods near downtown Pomona and along the Fairplex corridor, we regularly see aluminum post bases and connection brackets that have degraded faster than expected due to the combination of clay-heavy soil and seasonal moisture swings.

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Which ActiveYards Models This Applies To

ActiveYards manufactures several product lines that integrate with home additions and ADU builds, primarily the PostMaster steel post system, the Dogwood privacy panel series, and the Cambridge and Glendale ornamental aluminum collections. The critical compatibility point is the post dimension and wall-attachment bracket spacing - PostMaster uses a 2-inch by 2-inch galvanized steel post with pre-punched holes at 6-inch centers, while the ornamental lines use a 1.5-inch by 1.5-inch extruded aluminum rail that requires a different bracket set entirely.

To identify your exact system, check the inside face of the end post for a stamped model code or look for the white ActiveYards specification label on the original installation paperwork. If you’re missing both, measure the post wall thickness with a caliper - PostMaster runs 0.060 inch, while residential-grade ornamental posts run 0.040 inch. For structural connections in an addition or ADU, we source OEM-grade ActiveYards brackets from our distributor in Ontario when the project spec demands it, though we also stock commercial-grade equivalents from our standard inventory that meet the same load ratings at a lower per-piece cost. The Haven Standard requires us to document which you receive, so the quote shows the part number and origin before we order.

Signs Your ActiveYards Home Additions & ADU Is Failing

• Diagonal cracking in drywall at the addition junction. This signals differential settlement between the original foundation and the addition’s footing, often because the ActiveYards post base was set on an inadequate pad or the soil wasn’t properly compacted during the original build. We see this frequently in Pomona’s Ganesha Hills area, where hillside grading creates inconsistent bearing capacity.
• Water staining on the ceiling below the addition roof tie-in. The step flashing or counterflashing at the wall intersection has failed, allowing runoff to enter during our winter storm cycles. ActiveYards aluminum components don’t rust, but the fasteners and sealing tape behind them do, and once that seal is breached the damage compounds quickly.
• Gate sag or latch misalignment that worsens seasonally. The post is shifting in its footing, usually because the concrete collar has cracked or the PostMaster base plate has corroded where it meets the soil. In Pomona’s older concrete pads, we’ve found original installations that used minimal rebar and no gravel drainage layer underneath.
• Corrosion blooming at bracket-to-post connections. Galvanic reaction between dissimilar metals - typically the aluminum rail and a steel fastener that wasn’t properly isolated - accelerates in our warm, occasionally humid climate. The white or gray powder is aluminum oxide, and it means the connection is losing structural capacity.
• Gaps opening between fence panels and the addition wall. Thermal expansion cycles have overcome the original fastening pattern, or the wall attachment bracket has pulled away from the sheathing because it missed the stud during initial installation. This is both an air barrier failure and a potential security issue.

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Replacement Cost & What’s Included

The range depends on three factors: whether we’re matching existing ActiveYards materials that may be discontinued, whether the footing needs remediation or just the post base, and how many trades are involved in restoring the weather barrier. Under Clause 1 of the Haven Standard, your written quote itemizes every part and labor hour before work starts - no aggregate allowances, no “plus materials” clauses. Our 365-Day Done Right Promise covers the installation and hardware; OEM ActiveYards components carry the manufacturer’s 20-year residential warranty against structural failure.

DIY or Call Us?

There’s a clear line here. A homeowner can safely inspect for the symptoms above - tap the post base with a screwdriver to hear if it’s hollow from corrosion, run a level along the top rail to check for plumb, or photograph the bracket connections for our team to review. What we don’t recommend is removing a load-bearing post or attempting to reset a post base in concrete without knowing the footing depth and soil condition. A PostMaster post under tension from a sloped grade or wind load can shift unpredictably when the base connection is released, and the bracket hardware is torqued to spec for a reason.

We’ve also seen DIY attempts at roof flashing repair that trapped water instead of shedding it, turning a $1,200 bracket-and-flash job into a $6,000 sheathing replacement. If you’re unsure, call us at (626) 606-1081 - we’ll send a crew with a documented photo record of what they find, and the estimate is free.

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