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CGI Home Additions & ADU: The West Covina Owner’s Guide
CGI home additions and ADU projects in West Covina typically run between $45,000 and $130,000 depending on square footage, foundation requirements, and finishes. We stock and install CGI-compatible cabinetry, hardware, and finish materials for these projects, and most of our West Covina estimates are delivered in writing within a few days of your call. The way most homeowners discover a component has failed is during the planning phase, when an older CGI cabinet box, drawer glide, or mounting rail gives out mid-project and suddenly the scope changes.
Sometimes it’s a soft-close hinge that’s been grinding for months. Sometimes it’s a cabinet pull that stripped out of its face frame. In West Covina, where summer heat dries out wood and MDF faster than coastal cities, we see more cracked face frames and delaminating shelves than anything else on CGI-style cabinetry. The good news: none of it has to derail your addition or ADU timeline if you catch it early.
Which CGI Models This Applies To
CGI cabinetry and casework shows up in a lot of West Covina homes built between the late 1990s and early 2010s, particularly in kitchen and bath additions from that era. The most common lines we work with are the CGI Classic and CGI Premiere series, which use a 3/4-inch face frame with either partial-overlay or full-overlay doors. The mounting hardware differs between the two: Classic series uses standard 35mm cup hinges with a 1/2-inch overlay, while Premiere series runs 1-1/4-inch overlay hinges that require a different mounting plate. That’s the compatibility gotcha most people miss when they try to swap a door or hinge themselves.
If you’re not sure which line you have, look for a stamp inside the cabinet box on the upper left rail. CGI typically marked the series name and a five-digit date code there. If the stamp is gone, measure the overlay: a Classic door sits about 1/2 inch proud of the opening on each side, while a Premiere door sits closer to 1-1/4 inches. For aftermarket options, we’ve had good results with Blum and Salice hinges as direct replacements on the Classic series. For Premiere, we recommend sticking with CGI-spec hardware because the oversized overlay tolerances are tighter than most aftermarket plates can handle.
We’re an independent service provider, not affiliated with CGI. That just means we’re free to tell you when the OEM part is worth the price and when a quality aftermarket equivalent does the same job for less.
Styles & brands we work with
Signs Your CGI Home Additions & ADU Is Failing
Here’s what we see most often on CGI cabinetry and casework in West Covina homes, and what’s actually happening behind the symptom:
- Doors that won’t stay closed or bounce open: The hinge spring is worn or the mounting plate has loosened from the face frame. On full-overlay Premiere doors, this is usually the hinge cup losing tension after 15-plus years of daily use.
- Drawer glides that grind or catch mid-pull: The nylon roller or ball bearing has flat-spotted, which happens faster in dry, dusty West Covina summers. We see this on both CGI series, and it’s almost never worth lubricating once the glide is scored.
- Pulls and knobs that spin freely: The threaded insert or screw hole in the MDF door front has stripped out. This is a face-frame repair, not just a new screw, and it’s the single most common CGI-specific fix we do on additions and ADUs.
- Shelves sagging or cracking in the middle: CGI shelving from this era was often particleboard with a glued edge band. Once the edge band delaminates, the shelf loses structural strength and sags fast. Replacements should be plywood or solid wood, not another particleboard shelf.
- Face frames pulling away from the cabinet box: This happens when the original construction staples or pin nails fail, usually after years of thermal expansion and contraction in uninsulated garage or ADU spaces. We see this a lot in detached ADUs in West Covina where the temperature swing is more extreme than inside the main house.
See the difference
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AfterReplacement Cost & What’s Included
For the part itself, not the full addition project, here’s what West Covina homeowners can expect:
| Service | Typical Installed Price Range |
|---|---|
| Cabinet Installation (per room or project) | $4,000 – $13,000 |
| Countertop Installation (CGI-compatible cabinetry) | $2,000 – $6,500 |
| Cabinet Door or Drawer Front Replacement (per door) | $80 – $250 |
| Hinge and Glide Replacement (per cabinet) | $45 – $120 |
| Face Frame Repair (per cabinet) | $120 – $300 |
The wide range on full cabinet installation comes down to how much of the original CGI casework is salvageable. If the boxes are solid and only doors and glides need replacement, you’re at the low end. If water damage or delamination means new boxes, you’re at the high end. Every quote we write in West Covina is a line-item price delivered before work starts, so you know exactly what the parts cost and what the labor costs. Our workmanship is covered for 365 days from the completion date, and if something fails during that year, we come back and fix it at no charge.
The 365-Day Done Right Promise applies to every cabinet repair, hinge swap, and installation we do on home additions and ADUs in West Covina. If it’s not right within a year, we make it right. You should know what you’re getting before we ever pick up a tool.
DIY or Call Us?
Replacing a single pull or knob is something most homeowners can handle, assuming the threaded insert is still intact. Cleaning gunk off a drawer glide with a dry rag and checking for loose screws in the face frame is also fair game. Where DIY goes wrong on CGI pieces is when you strip a hinge screw in particleboard, snap the edge banding off a shelf trying to force it out, or buy the wrong overlay hinge because the series wasn’t identified first. That last one is the expensive mistake: we’ve seen West Covina homeowners buy full sets of Classic hinges for Premiere doors and end up with doors that hang 3/4 inch off the opening.
If the cabinet box itself is cracked, water-damaged, or pulling away from the wall, that’s a structural repair with weight loaded on it. Let a pro handle it. For anything in between, call us at (707) 760-7579 and we’ll walk you through whether it’s worth a service visit or something you can knock out yourself. The estimate is free either way.
FAQs
In West Covina’s dry, hot climate, expect 15 to 25 years from the cabinet boxes and 10 to 15 years from hinges and glides, assuming normal use and no water exposure. Particleboard shelves fail sooner, often within 12 to 18 years. Call (707) 760-7579 if your cabinets are close to that window and you want an honest assessment before you start a larger addition or ADU project.
Yes, in most cases. A stripped screw hole can be filled and re-drilled, a loose face frame can be re-secured, and a single hinge can be swapped without replacing the whole cabinet. Replacement only becomes the better option when the underlying material is cracked, water-damaged, or delaminated beyond a solid repair. We’ll tell you which path costs less, and we’ll put it in writing before any work starts.
Most single-cabinet repairs on CGI cabinetry take 30 to 90 minutes on site, assuming the part is on our truck or already ordered. If we’re replacing doors, drawer fronts, or multiple hinge sets, expect a half day to a full day depending on how many cabinets are involved.
We stock 35mm cup hinges, 1/2-inch and 1-1/4-inch overlay hinges, common drawer glides in 18-inch and 22-inch lengths, and repair hardware for both CGI Classic and Premiere series. Specialty items like color-matched edge banding or full door replacements are ordered to spec. If we have to order, we’ll tell you the lead time before you commit to anything, and the price on your written quote doesn’t change when the part arrives.
Call (707) 760-7579 to schedule your free estimate. A live person answers, day or night, and we’ll get your CGI home addition or ADU components matched, priced, and installed correctly the first time.
Written by Isaac Pruett, Owner, Mason Remodeling Co West Covina at Mason Remodeling Co West Covina, serving West Covina and nearby areas.
