ActiveYards Home Additions & ADU Nationwide

ActiveYards Home Additions & ADU: The Los Angeles Owner’s Guide

Rowan Construction Group installs and services ActiveYards-compatible home additions and ADUs across Los Angeles, with complete projects typically running $53,100 to $153,400 depending on square footage, foundation work, and finish level. We’re an independent contractor, not affiliated with ActiveYards, which means we price the work honestly and match materials to your existing structure without brand markup. Most owners call us when they realize their existing addition or ADU isn’t performing: a settling foundation, water intrusion at the transition point where the addition meets the original structure, or a prefabricated component that’s reached the end of its service life.

Call (470) 298-9650

Which ActiveYards Models This Applies To

ActiveYards doesn’t manufacture stick-built home additions the way it produces fencing and railing systems, so when Los Angeles homeowners reference “ActiveYards additions,” they’re usually talking about one of two things: a permitted ADU project where ActiveYards fencing or railing was specified as part of the exterior package, or a prefabricated structure (studio, storage building, or accessory space) that sits on the property. We work with both scenarios. The compatibility question that matters is how the existing ActiveYards components integrate with the new construction: post spacing, gate swing clearance, and the attachment point where railing meets stucco or siding. If you have the original ActiveYards installation paperwork, look for the product line code, typically printed on the box or the inside of a gate post cap. Without that code, we match by measurement: post diameter, rail profile, and picket spacing. On the OEM versus aftermarket decision for ActiveYards parts specifically, the honest answer is that aftermarket aluminum railing components from quality fabricators perform identically and often cost 20 to 30 percent less, but we’ll only substitute when the profile matches exactly, because a 1/8-inch variation in rail thickness is visible at eye level.

Signs Your ActiveYards Home Additions & ADU Is Failing

• Gap opening at the addition-to-house transition. Los Angeles soil expands and contracts with seasonal moisture, and a structure that wasn’t tied to the original foundation with proper shear transfer will show a widening crack at the seam. This movement, left alone, lets water in and invites dry rot into the framing.
• Doors or windows that stick seasonally. If the door to your ADU binds in summer and swings free in winter, the slab or pier footings are moving. ActiveYards railing and gate posts set in concrete that’s too shallow will lean with the same soil movement, pulling the gate out of alignment.
• Water staining at the bottom plate. The bottom plate is the horizontal framing member that sits on the foundation. Staining there means the flashing at the roofline or the weep screed at the stucco line isn’t doing its job, and water is traveling down inside the wall cavity. We see this most often on south-facing additions in Los Angeles, where the sun bakes the exterior and opens hairline cracks in the stucco.
• Railing posts that wobble at the base flange. ActiveYards aluminum posts anchor with lag bolts into a substrate, and when that substrate is a wood deck that’s begun to rot, the bolts lose their bite. You’ll feel the wobble before you see it, usually at the corner where the railing changes direction.
• Gate that scrapes or won’t latch. The self-closing hinge mechanisms on ActiveYards gates are spring-loaded, and when the spring fatigues or the gate frame torques out of square, the latch tongue no longer lines up with the strike plate. This is a safety issue for any ADU with a pool or a child’s play area, because a gate that won’t self-close is a code violation in Los Angeles County.

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Replacement Cost & What’s Included

In Los Angeles, a full home addition or ADU project runs $53,100 to $153,400. We write that number on the quote before anyone picks up a hammer. The range breaks down like this:

• Small ADU (300-500 sq ft): $106,200-$259,600, including site prep, foundation, framing, electrical, plumbing, drywall, flooring, and finishes. The spread depends on whether you’re on a flat pad in Sherman Oaks or a hillside in Echo Park where piers and retaining walls add cost.
• Garage conversion to living space: $35,400-$94,400. This assumes the existing slab passes inspection; if we have to cut in new plumbing for a bathroom, the price moves toward the top of that range.
• ActiveYards railing and gate replacement (attached to either project): We quote this as a line item, not buried in “miscellaneous.” Typical railing replacement with matching aluminum profile runs $45-$120 per linear foot installed, depending on height code and post condition.

Every quote includes the written scope, the written warranty, and a documented photo record taken on every visit. Under Clause 1 of the Haven Standard, the price is written before work starts. That’s not a perk. That’s the whole point.

DIY or Call Us?

You can check the obvious things yourself: measure the gap at the transition seam, note whether the gate latch engages, take photos of water staining. What you shouldn’t do is start pulling railing posts or cutting into the wall where the addition meets the house. That’s where the electrical runs live, and where load gets transferred from the roof down to the foundation. When we open up a failed transition in Los Angeles, we’re typically finding three things: the original contractor didn’t install a proper shear wall or hold-down hardware, the flashing was done with a single layer where it should have a minimum of two, and the stucco was applied without weep screed at the base, so moisture has been sitting in the wall for years. Diagnosing that from the outside is guesswork. We document what we find, photograph it, and put the repair in writing before we touch it. Call (470) 298-9650 and we’ll walk the site with you.

Measure twice, say it once, show your work.

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