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ADUs & garage conversions · Completed project
Two-Story Backyard ADU with a Bay Window Bedroom and Two Baths
A two-story unit with the kitchen and living area on the ground floor, and a bedroom with a bay window seat, walk-in closet and laundry upstairs.
- Project
- Two-story ADU
- Layout
- Kitchen, living, bedroom, 2 baths
- Highlights
- Bay window seat, two showers
- Service area
- San Jose Bay Area
Project overview
About this project
The ground floor has a kitchen, a living area and a white staircase with oak treads and a storage door underneath. The kitchen uses espresso-stained shaker cabinets with white counters, a white backsplash and stainless gas range, microwave, dishwasher and refrigerator.
Upstairs, the bedroom has a ceiling fan, a ductless unit and a bay window with a built-in window seat. A walk-in closet with hanging rods and a drawer tower sits off the bedroom, and a stacked washer and dryer share space with the bathroom.
The upstairs bathroom has an espresso vanity, a backlit mirror and a glass shower in green-gray stone-look tile with a linear drain. The second bathroom has a floating oak vanity, a backlit mirror, a curbless shower behind a single glass panel and a patterned stone-look floor.
Bay window seat
A built-in seat in the upstairs bay window.
Espresso kitchen
Shaker cabinets, white counters and stainless appliances.
Curbless shower
Single glass panel, linear drain and matte black fixtures.
Stacked laundry
Washer and dryer upstairs next to the bedroom.
Project photos
Photo tour: 31 photos
Photos of the finished work. Tap any photo to view it full screen, then swipe or use the arrow keys.
Scope of work
What we built
Everything Quartz Construction & Remodeling handled on this project, grouped by part of the job.
Structure
- Two-story stucco ADU
- Bay window on the upper floor
- Staircase with oak treads
- Under-stair storage
Kitchen
- Espresso shaker cabinets
- White counters and backsplash
- Gas range and microwave
- Dishwasher and refrigerator
Bedroom level
- Bay window seat
- Walk-in closet with drawers
- Ceiling fan and ductless unit
- Stacked washer and dryer
Bathrooms
- Stone-look tile glass shower
- Curbless shower with linear drain
- Espresso and floating oak vanities
- Backlit mirrors
How we work
How a project like this comes together
The same five steps run every Quartz job, from the first visit to the final walkthrough. One team designs, permits and builds it.
Site visit and feasibility
We look at the lot or garage, utilities, access and setbacks, and talk through how you plan to use the unit.
Design and plans
Floor plan, kitchen and bath layout, and finishes are drawn up and prepared for the city.
Permits
We prepare and submit the permit package and coordinate plan check with the city or county.
Construction
Foundation or slab work, framing, utilities, insulation, drywall, then kitchen, bath and finishes.
Final inspection and walkthrough
The unit passes final inspection and we walk it with you before handing over the keys.
Questions & answers
ADUs & garage conversions: common questions
Planning something similar? These are the questions homeowners ask us most. Anything else, just call.
(650) 749-7436Do you handle ADU permits?
Yes. As your general contractor we prepare the permit package, submit it to the city or county and coordinate inspections through final sign-off.
Can a detached garage be converted into an ADU?
Often, yes. It depends on the structure, the slab, setbacks and utilities. We check those on a site visit before any design work.
What does an ADU need inside?
A legal ADU needs its own kitchen, a full bathroom, a sleeping area and a separate entrance. Heating and cooling, laundry and storage are planned into the layout.
Can I rent out an ADU?
In California, ADUs are commonly used as rentals or for family. Local rules on rental terms vary by city, so check your city's ADU rules for your lot.
Do you work in my city?
Our office is in San Jose and we build across Santa Clara, San Mateo, Alameda and Contra Costa counties. Call us to confirm your address.
Client reviews
What our clients say on Google
We had an amazing experience with Quartz Construction for our garage conversion ADU. The entire process was smooth and stress-free—they made everything incredibly easy for us from start to finish. Our project manager, Ohad, was fantastic to work with. He was always available, professional, and made sure everything ran smoothly. On top of that, they also completed a full backyard renovation, and the results exceeded our expectations. The quality of work and attention to detail were outstanding. Highly recommend them to anyone looking for a reliable and professional construction company!
We hired Ohad and his crew for a home addition, and they did a fantastic job. The new area feels like it’s always been part of the house. Great craftsmanship and smooth process.
Working with Ohad on our full home remodel was an incredible experience. He helped us through every decision and made sure everything turned out exactly how we envisioned. The team was easy to communicate with and super detail-focused. We still can’t believe how beautiful our home looks!
More projects
Explore more of our work
More completed Quartz projects across the San Jose Bay Area.
From our blog
Helpful reading before you start
Guides on permits, materials and planning, written by the team that builds these projects.
Room Addition vs. Second-Story Addition: Which Fits Your Lot?
Ground-level room addition or second story? Compare foundation work, structural engineering and San Jose zoning rules before you design your Bay Area addition.
ADU vs. Garage Conversion: Which Fits Your Lot?
Setbacks, parking replacement and permit timelines compared for garage-conversion and detached ADUs in San Jose, sourced from the city and state law.
Free estimate
Begin your home remodeling journey
Your house deserves more than basic repairs. Tell us about your project and we’ll call you to set up a free on-site estimate.
- Call or text(650) 749-7436
- HoursMon–Fri, 8 AM–5 PM
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