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Blanco Home Additions & ADU: The Pasadena Owner’s Guide
Home additions and ADU construction in Pasadena typically run $45,000 – $130,000 installed, and Blanco owners usually reach out to us when an existing addition is failing structurally or when they’re planning new square footage around Blanco fixtures and finishes. We’re Sawyer Remodel Pasadena, an independent general contractor, and we handle the full scope: permits, foundation, framing, plumbing, electrical, and the Blanco-compatible finishes that tie it together. Most owners discover the problem the hard way: a cracked foundation slab under the old addition, water intrusion at the roofline, or a Blanco sink or faucet that’s been slowly leaking into the cabinetry below.
The work tells you everything. You just have to know how to listen to it.
Here’s what you need to know before you write a check or ignore that crack for one more season.
Which Blanco Models This Applies To
Blanco doesn’t build additions or ADUs, that’s ours. But when we tie new square footage into an existing home, Blanco fixtures and surfaces often carry over: Blanco Silgranit sinks, Blanco faucets, and Blanco accessory rails in the kitchen or ADU kitchenette. The compatibility question is almost always about the sink and countertop integration, not a model-specific part number.
If you’re matching a new Blanco sink to an existing cutout, measure the overall deck dimensions and the inside bowl width. Blanco’s Silgranit line runs undersized on the mounting flange by design, about 3/8 inch tighter than stainless equivalents, which means swapping a stainless sink into a Silgranit cutout without a template almost never works. For faucets, check the hole count: Blanco single-hole faucets won’t cover a 3-hole deck without an optional deck plate. We stock the common deck plates on the truck, and we’ll tell you honestly when a cutout needs recutting versus when a trim ring solves it. We also work with KraftMaid and Cambria cabinetry and tops on these jobs, so the Blanco integration usually happens alongside those brands.
Styles & brands we work with
Signs Your Pasadena Home Addition or ADU Is Failing
- Floor slope or bounce: In older Pasadena additions, especially on post-and-pier foundations near Bungalow Heaven, you’ll feel a soft floor or see a marble roll. That’s usually undersized joists or settled piers, not a furniture problem.
- Water stains at the wall-ceiling junction: Flat-roofed additions common to 1950s Pasadena homes fail at the parapet flashing first. The stain shows up months after the leak starts.
- ADU kitchenette leaking under a Blanco sink: The sink itself rarely fails, but the supply line connections and the strainer basket gasket do. If the cabinet floor is swollen, the leak has been active for a while.
- Doors that stick seasonally: Clay soil in Pasadena expands and contracts hard with rain and drought. An addition that shifts enough to bind doors in winter needs a foundation inspection.
- Drywall cracking at window corners: Diagonal cracks radiating from window corners indicate shear stress on the wall assembly. In a poorly framed addition, this shows up within the first five years.
See the difference
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After
Before
After
Before
AfterReplacement Cost & What’s Included
For a full home addition in Pasadena, plan on $45,000 – $130,000 depending on square footage, foundation type, and finish level. An ADU runs higher, $90,000 – $220,000, driven by separate meter requirements, fire-rated separation, and site access. Smaller scopes still follow this pattern: a kitchen remodel inside that addition runs $14,000 – $45,000, a bathroom $9,000 – $28,000, and cabinet installation $4,000 – $13,000.
Every price we give you is a written, line-item number before any work starts. That means the price on your invoice is the price you approved. We include permits, inspections, materials, labor, and haul-away. We don’t pile change orders on at the end. The 365-Day Done Right Promise backs every project in writing: if it’s not done right, we make it right.
DIY or Call Us?
If all you’re dealing with is a dripping Blanco faucet cartridge or a loose strainer basket, a homeowner can usually swap those out with a basin wrench and some patience. Shut the water off at the angle stops first. Where DIY goes wrong on additions and ADUs is anything structural: foundation work, shear walls, electrical panels, gas lines, roofline tie-ins. That work requires permits and inspections in Pasadena, and getting it wrong means tearing out finished work later.
If you’re standing on a sloping floor or looking at a crack wider than a quarter in your foundation, call us before you Google one more fix. We’ll walk the site, give you a straight answer, and put the price in writing.
FAQs
A properly permitted and built addition in Pasadena should last 50+ years structurally, with the roof assembly and windows being the first components to need replacement at roughly 20 – 30 years, sooner on flat roofs exposed to full sun. The dry Southern California climate helps framing last, but sun damage to roofing and flashing is the real long-term wear factor here.
Yes, if the failure is localized: a settled pier, a failed flashing detail, or one section of rotten sill plate can usually be repaired without tearing the whole structure down. If the foundation has shifted broadly or the original framing was never permitted, full replacement or major reinforcement often costs less than piecemeal fixes. Call (626) 657-5396 and we’ll tell you which one you have after a walkthrough.
Plan on 4 – 9 months for a full addition and 6 – 12 months for an ADU, with Pasadena plan-check and permit review adding 4 – 10 weeks on the front end. Our scheduling is live and visible to you: arrival times, photo updates before and after, and a digital invoice you pay from a link, all under The Relay Visibility Guarantee.
We stock Blanco strainer baskets, supply line connectors, deck plates, and common faucet cartridges on the truck, plus KraftMaid and Cambria cabinet hardware for finish work. If we don’t have your specific Blanco part in the truck, we can usually source it same-week through our supplier network in Pasadena.
Written by Luca Romano, Owner & Lead Contractor, Sawyer Remodel Pasadena at Sawyer Remodel Pasadena, serving Pasadena and nearby areas.
