Cover Garage Conversion ADU Nationwide

Cover Garage Conversion ADU: The San Bernardino Owner’s Guide

Cover garage conversion ADU systems in San Bernardino typically run $180,000 to $280,000 all-in, drawings through final inspection, depending on size and site conditions. We specify and coordinate Cover’s prefab panel system under our single design-build contract, with the permit set as the core deliverable. Most owners realize something’s off when the conditioned envelope fails to maintain temperature, the panel seams show daylight, or the electrical rough-in doesn’t match the stamped drawings.

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We’ve worked on Cover-coordinated garage conversions across San Bernardino, including projects near Seccombe Lake where the existing slab and roof structure had to be reconciled with Cover’s panel dimensions. The mismatch between field conditions and factory specs is where most delays start.

Which Cover Models This Applies To

Cover’s garage conversion system uses a panelized wall and roof assembly shipped in standard widths. The critical identifier is the panel generation: Gen 1 panels (pre-2022) used a different corner detail and window buck rough opening than Gen 2, which Cover revised after field reports from inland California climates. The label is on the panel edge stamp, visible if you remove a section of interior trim.

We coordinate Cover systems alongside our own permit sets, and the compatibility gotcha we’ve seen in San Bernardino is slab thickness. Cover’s floor track assumes a 4-inch minimum slab; many San Bernardino garages built before 1980 have 3.5-inch slabs that don’t meet the structural note without a mud cap or full replacement. We check this on the first site visit and note it in the photo record.

OEM Cover panels are available through Cover’s logistics network with lead times of 8-12 weeks. For certain components - weatherstrip, fastener kits, trim coil - we source equivalent-grade aftermarket that meets the same ASTM specs and carries the same warranty. The decision point is usually timeline, not quality.

Signs Your Cover Garage Conversion ADU Is Failing

• Temperature swings you can’t explain. The mini-split runs constantly but the space won’t hold setpoint. Often the panel seam tape has degraded in San Bernardino’s high UV exposure, or the vapor barrier detail at the roof-wall junction was missed during install. We thermal-scan to find the leak before quoting.
• Visible gaps at panel seams. Cover’s compression gaskets settle over the first two heat cycles. If the install crew didn’t follow the torque sequence in the erection drawing, the gap widens. Water follows; we find staining on the interior face first.
• Electrical circuits trip under normal load. Cover ships with a pre-wired panel, but the connection to the existing service requires a site-specific load calc. In San Bernardino, older 100-amp services often can’t handle the ADU addition without an upgrade. We flag this in the permit set, not after drywall.
• Floor track corrosion. The aluminum track system sits directly on the slab. If the slab wasn’t properly sealed or the garage had historical moisture issues, the track pits. This isn’t cosmetic; it affects the wall’s lateral stability.
• Windows or doors that bind. Cover’s openings are factory-cut to tight tolerances. Field adjustment without the shimming detail from the install manual throws the whole frame out of square. We see this most on owner-modified units where a door was swapped for a slider after delivery.

Replacement Cost & What’s Included

Cover garage conversion ADU work in San Bernardino falls into three cost bands: panel-only replacement ($12,000-$18,000), envelope remediation with seal and trim ($24,000-$38,000), and full system re-coordination when the original install deviated from permitted drawings ($45,000-$72,000). These are installed ranges, including our permit revision, the photo record, and final inspection coordination.

What drives the spread: slab condition, whether the original install was documented with as-builts, and how many trades are involved. Electrical-only issues stay low; structural or envelope failures cascade. Under Haven Standard Clause 1, you receive a written price before any work starts. Under Clause 5 (No Surprises), the scope locks at signing. The 365-Day Done Right Promise covers the workmanship.

We don’t quote over a vague description. Tell me the lot dimensions and I can give you a real number - not a range so wide it’s useless.

DIY or Call Us?

What you can safely check: verify the panel generation from the edge stamp, confirm the mini-split filter is clean, and photograph any gaps or staining for documentation. What you should not attempt: panel removal or re-sequencing (the walls are braced as a system; one out-of-order removal compromises lateral stability), electrical troubleshooting beyond resetting a breaker, or sealant replacement at height without proper fall protection.

Cover’s system is engineered as an integrated assembly. A panel swap without the jacking sequence in the manual risks racking the frame. We’ve been called to three San Bernardino jobs where a handyman’s partial fix created a code violation that required full permit revision. Call (909) 359-6463 and we’ll assess what’s actually failed before you spend anything.

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