Cover Garage Conversion Contractor in San Jose: What to Know First
Garage conversion for a Cover home in San Jose typically runs $85,000 to $160,000 depending on whether you’re working with an attached space or a detached unit, and most projects take 10 to 16 weeks from permit to final inspection. We’re an independent Cover service provider, meaning we know these structures inside and out but we’re not affiliated with or authorized by the manufacturer. What that gets you is straight answers: a written price before work starts, a real arrival window, and a guarantee that comes back with us if anything’s wrong.
This page is for San Jose homeowners who already own a Cover unit, or are thinking about one, and need to know exactly how a garage conversion works on that specific build. Call (669) 266-4319 to talk to a live person about your project.
How Cover Products Fail – and How We Fix Them
Cover builds compact, panelized accessory dwelling units that get craned onto a prepared foundation. They’re efficient homes, but garage conversions around them come with their own set of recurring issues we’ve learned to spot quickly in San Jose.
- Floor-level moisture intrusion on Cover ADU slab connections. When a Cover unit sits adjacent to a garage being converted, the seam where the factory floor meets the garage slab is the most common water entry point. San Jose’s winter rain drives water against that joint hard. We see staining and eventual subfloor swelling in units installed before 2021 because the original flashing detail didn’t account for our wet-dry swing. Our fix is a full seam excavation, new stainless flashing, and a polyurethane seal that moves with the slab instead of cracking.
- Uneven settling between the Cover unit and a converted garage. Cover units rest on their own foundation system. The garage next to them usually sits on a slab poured decades earlier. The two move differently as the soil shifts through San Jose’s dry summers and wet winters. Cracks open at the transition, doors bind, and plumbing runs that cross the joint can develop slow leaks. We jack and shim where possible, then re-level the transition so the two structures move as one floor.
- Electrical panel capacity on Cover builds with converted garage loads. Cover ships a standard 100-amp panel in most units. Add a garage conversion with a bedroom, bathroom, and mini-split, and you’re over the load calculation fast. We’ve had to upgrade to 200-amp service on more than half the Cover garage conversions we’ve handled in San Jose, especially in the Cambrian and Willow Glen areas where older homes already carry heavy base loads. We won’t tell you the existing panel is fine when the math says otherwise.
- Exterior wall penetrations that leak at the Cover panel joints. Running plumbing or electrical from a converted garage into a Cover unit means punching through the factory panel system. Done wrong, water gets behind the rainscreen and you don’t see it until the wallboard stains or the siding swells. We open these penetrations carefully, use compression gaskets sized for the panel thickness, and flash them the way they should have been from day one.
- Ventilation mismatch between converted garage space and Cover’s tight envelope. Cover units are built tight for energy efficiency. A converted garage with a bathroom and bedroom adds moisture load that the existing ventilation can’t handle. Without proper exhaust and makeup air, you get condensation on windows, musty odors, and eventually mold in the corner of a bedroom that was supposed to be finished. We spec the right CFM exhaust for the converted square footage and verify the airflow before we call the job done.
Our Cover Garage Conversion Contractor Process
- 1
First call and site visit. You call (669) 266-4319, a live person answers, and we set a time to walk the property. Russ Delmar handles the initial assessment himself because Cover jobs have enough quirks that a quick look saves everyone money down the line.
- 2
Written scope and price. Before anyone swings a hammer, you get a line-item estimate on paper. The price you read is the price you pay. No change orders at the door because the quote didn’t account for something we should have caught during the walkthrough.
- 3
Permit and plan coordination. Garage conversions in San Jose require permits through the city’s planning department, and Cover’s pre-approved status with the state helps, but it doesn’t skip local review. We handle the drawings, the submittals, and the inspections. If a previous contractor left your permits half-finished, we pick them up and get them closed.
- 4
Demolition and structural work. We strip the garage to its frame, fix any structural issues, and build out the conversion to match the finish level of the Cover unit next to it. Floor heights get matched, walls get insulated to code, and the connection between the two structures gets flashed and sealed properly.
- 5
Mechanical, electrical, and plumbing rough-in. Panel upgrades happen here if the load calculation calls for it. All new wiring, plumbing, and HVAC go in before the walls close. We call inspection at this stage so nothing gets buried without sign-off.
- 6
Finish work and final walkthrough. Drywall, paint, flooring, trim, fixtures. Then we walk the space together. If something’s not right, it gets fixed before we consider the job done. You get the written guarantee at this point, and it covers the work for 365 days.
What Cover Garage Conversion Contractor Costs in San Jose
Here are real numbers for the Cover garage conversion work we do in San Jose.
- Attached garage conversion (basic bedroom and bathroom): $85,000 to $115,000
- Detached garage conversion to full ADU: $120,000 to $160,000
- Garage to living space with kitchenette (JADU-style setup): $95,000 to $135,000
- Electrical panel upgrade to 200 amps: $3,500 to $6,000 (included in most estimates when needed)
- Structural repairs discovered during demolition: $2,000 to $12,000 depending on what’s hiding behind the drywall
What moves the price most is the condition of the existing garage foundation and the distance between the garage and the Cover unit’s mechanical connections. A garage with a cracked slab or a foundation that’s settled will cost more to bring up to code, and that’s a line item you’ll see before we start, not after. Call (669) 266-4319 to schedule a free estimate. You’ll get a written number you can actually plan around.
Why San Jose Homeowners Call Lodgewick ADU San Jose for Cover Work
Lodgewick ADU Builders is the ADU company of the Kingswell family, and every garage conversion we take on in San Jose operates under The Kingswell Guarantee. That means a written price before work begins, a defined arrival window that we actually show up inside, a clean job site every day, and a written guarantee on every project. If the work fails within 365 days, we come back and make it right. That’s the 365-Day Done Right Promise, and you get it in writing before the first nail is driven. Our crew is background-checked and uniformed, so you know who’s on your property. And when you call, a live person answers, 24/7. We also work with Abodu and Dvele systems, so if your project involves more than one prefab unit, we can handle it without juggling three contractors.
As Russ Delmar puts it, “Tell me what you were promised before, and I’ll tell you what we can actually deliver.” That’s the standard we work to on every Cover garage conversion in San Jose.
FAQs
Yes, and that’s a big part of what we do. We take over half-finished Cover garage conversions in San Jose, sort through whatever permits are open, and get the project closed out properly. Call (669) 266-4319 for an assessment of where things stand and a written number for what it’ll take to finish.
Cover’s warranty stays intact on the Cover unit itself. The converted garage is our work, covered under our 365-Day Done Right Promise. We document everything so there’s no confusion about which part of the project belongs to which warranty. If you’re mid-warranty on your Cover unit, we’ll talk you through what the conversion might and might not touch before you commit.
Plan on 10 to 16 weeks. The biggest variable is San Jose permit review time, which changes depending on the housing department’s backlog. We’ll give you a written timeline with the estimate and update you if inspection scheduling shifts. Every week we’re on site, you’ll know what’s happening and when we’ll be there.
Where the connection touches Cover’s factory panels, we use materials matched to the original specification so the envelope stays consistent. For the conversion work itself, we use proven local building materials that meet or exceed San Jose code. If a specific Cover component is needed, we source it directly. We won’t substitute a cheap part to save a few bucks without telling you first.
No. The written price you approve is the price you pay, full stop. If we find something hidden during demolition that wasn’t foreseeable, we stop, show you what’s there, and put a number in writing before any extra work happens. You approve it or you don’t. There’s no surprise bill at the end of a Lodgewick job.
Written by Russ Delmar, Owner, Lodgewick ADU San Jose at Lodgewick ADU San Jose, serving San Jose and nearby areas.
