Home addtion at Celeste Ct, San Jose, CA 95133

A home addition project in San Jose featuring expanded living space with a renovated bathroom including stone-tiled shower, modern vanity, and sliding glass doors, plus a backyard patio area with pergola and BBQ grill access via new sliding glass door entrance.

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This home addition at Celeste Ct in San Jose, CA 95133 expanded an existing residence to better fit how the homeowners actually live — adding the kind of usable space that raises a home's daily quality of life and its long-term resale value. Additions like this one typically pay for themselves in lifestyle terms long before they show up in the property's appraisal.

San Jose's permitting for residential additions covers foundation engineering, structural framing tied into the existing house, Title 24 envelope compliance, mechanical and electrical extension, and a sequence of building department inspections from foundation through final. Each stage requires inspection sign-off before the next one can proceed — coordinating these inspections against trade schedules is a meaningful part of keeping the project on time.

The Celeste Ct scope included new foundation work matched to the existing footprint and sized for the addition's loads, structural framing aligned with California Residential Code, exterior weatherization integrated with the existing siding, electrical and HVAC extension into the new space, insulation and air-sealing detailed for Title 24 compliance, and interior finishes selected to feel continuous with the rest of the home.

Browse the photo gallery below to see the construction phases and the finished addition on this San Jose home.

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Why 9Builders?

Every project reflects our dedication to quality, transparency, and client satisfaction.

01

Quality Craftsmanship

Premium materials, skilled crews, and meticulous attention to detail on every build.

02

Full-Service Approach

Design, permits, construction, and inspection — all managed under one roof.

03

Bay Area Expertise

Deep knowledge of local codes, zoning, and neighborhood requirements across the Bay Area.

Frequently Asked Questions

Timelines vary by project scope. A typical ADU takes 8-14 months, a home remodel 3-6 months, and smaller projects like fence replacement or tile work can be completed in 1-4 weeks.
Yes. 9Builders manages the entire permitting process and coordinates all required inspections with the city, so you don't have to.
We serve the entire Bay Area including San Jose, Santa Clara, Sunnyvale, Campbell, Los Gatos, Saratoga, Palo Alto, Mountain View, Cupertino, Fremont, and surrounding cities.
Absolutely! Visit our portfolio page to browse all completed projects, or contact us to discuss your own project.
We begin with a free consultation to understand your goals and budget. From there, we provide a detailed estimate, handle design and permits, and manage construction through to final walkthrough.
Yes. All 9Builders projects come with a workmanship warranty. We stand behind the quality of our construction and are committed to your long-term satisfaction.

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