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Wellborn Home Additions & ADU: The Pasadena Owner’s Guide
Wellborn home additions and ADU projects in Pasadena typically run $45,000 – $130,000 depending on square footage, site prep, and finish level. That’s the honest range we quote, and the number we put in writing before a single tool leaves the truck. Most Pasadena homeowners find us because they’ve outgrown a Wellborn kitchen or bath layout and want the cabinet quality to extend into a new primary suite, in-law unit, or garage conversion. Others have a failing addition: a roofline pulling away at the tie-in, a floor system that sags where the old slab ended and the new framing began, or an unpermitted former owner job that’s now leaking and needs a real fix. If you’re calling about a Wellborn addition that’s starting to show its age, we can tell you within one visit whether you’re looking at a repair or a rebuild.
Which Wellborn Models This Applies To
Wellborn Cabinet builds a broad line: Estate, Premier, Select, and Cabinet Components by Wellborn. The cabinet line matters less for additions than the rough opening dimensions and the existing wall condition. What we see most often in Pasadena additions is cabinetry originally installed without accounting for Southern California’s dry-summer, wet-winter cycle. Wood wants to move. A Wellborn maple face frame in a room that swings 40 percent humidity between August and February will expand and contract enough to pop a scribe or crack a joint at the crown. That’s not a Wellborn defect; it’s a reality of Pasadena’s climate and why we use floating installation tolerances on all our add-on runs.
For ADU work, the compatibility question is about what wall you’re attaching to. We install Wellborn cabinets into new ADUs, garage conversions, and second-story additions weekly. The marking that matters is on your existing cabinet’s interior hinge plate or drawer box: Wellborn stamps a manufacture date and series code. If you have a home addition that already has Wellborn boxes and you want to match them, bring us a drawer front or a door, not just a photo. Photos lie about color, especially warm whites under Pasadena’s afternoon sun.
Styles & brands we work with
Signs Your Wellborn Home Additions & ADU Is Failing
- Doors that won’t stay closed, or rub at the top corner. This is almost always a combination of settling at the addition’s foundation line and hinge fatigue. The cabinet is fine; the room it’s attached to moved.
- Visible cracking at the roofline or drywall joint where old house meets new. We see this constantly in Pasadena hillside additions where the tie-in wasn’t flashed properly. Water follows the crack, and by the time you see the stain inside, the framing behind it has been wet for a season.
- Floor squeaks that appeared suddenly and are getting louder. In a converted garage or second-story ADU, a squeak near the exterior wall often means a joist hanger failing or a rim board pulling away. It won’t fix itself.
- Musty smell in the addition with no visible water. Pasadena’s older Craftsman homes got additions in the 80s and 90s, many without proper vapor barriers. That smell is usually water trapped in a wall cavity or crawl space, slowly eating the sill plate.
- Counters sloping and cabinet gaps widening above them. If your Wellborn base cabinets are shimmed more than half an inch at one end, something structural moved below them. Cabinets don’t sag; floors do.
See the difference
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AfterReplacement Cost & What’s Included
For a full Wellborn home addition in Pasadena, plan on $45,000 to $130,000. A stand-alone ADU runs higher, typically $90,000 to $220,000, and a garage conversion falls around $30,000 to $80,000. The range comes down to three things: foundation condition, roofline complexity, and finish level. We write the price before work starts. That price includes permits, demolition, framing, drywall, paint, Wellborn cabinet installation, flooring, and the final city inspection. No change order games. If we uncover dry rot in a wall, we show you a photo and a revised number before we touch it. Every project carries our 365-Day Done Right Promise: if it’s not done right, we make it right, in writing, for a full year after we close out.
DIY or Call Us?
If you’re adding onto your Pasadena home or building an ADU, this is not a DIY project. We’re not saying that because we want the work; we’re saying it because a bad addition tie-in compromises the roof structure, creates water intrusion, and can put your entire home out of code compliance. Pasadena’s building department requires stamped plans for structural changes, and the hillside districts add geotechnical requirements that most homeowners don’t see coming. What you can do: check your existing addition for water stains after a hard rain, mark any cracks with pencil so you can see if they’re spreading, and call us before you sign with an architect. We’ll tell you what’s buildable and what it costs before you spend money on drawings. Call (626) 657-5396 and we’ll walk the site with you.
FAQs
A properly built addition lasts 50-plus years in Pasadena; the failure point is almost always the tie-in flashing and the foundation connection, not the framing. We see 1980s additions failing at 35 years because the original flashings were never maintained. Call (626) 657-5396 if you want an honest assessment of yours.
Yes, if the framing is sound, the foundation is stable, and the water intrusion hasn’t compromised the structural members. About half the additions we see in Pasadena can be saved with proper re-flashing, structural shoring, and targeted repairs. We’ll tell you which path makes sense for your budget. Call (626) 657-5396 for an inspection.
Most Wellborn addition and ADU projects in Pasadena run 4 to 8 months from permit application to final inspection, depending on city plan review times and site access. We give you a written schedule up front and update it weekly. Call (626) 657-5396 to discuss your timeline.
We’re an independent contractor, not affiliated with Wellborn or its parent Remington, but we order Wellborn cabinets direct for every addition and ADU we build, and we also work with KraftMaid, Cambria, and Silestone when a homeowner wants a different look or timeline. Call (626) 657-5396 and tell us what you’re planning.
Written by Luca Romano, Owner & Lead Contractor, Sawyer Remodel Pasadena, serving Pasadena and nearby areas throughout the San Gabriel Valley.
