Construction, Remodeling & Drainage in Berkeley, CA
From drainage problems on sloped lots to full interior remodels, Berkeley homeowners get one licensed crew for the whole project with Yi Builders (Yi Construction LLC, CSLB No. 1103231). We begin every job with a free visit, honest scoping and an itemized written proposal, so you know exactly what is included before anything starts.
Our services in Berkeley
Kitchen Remodeling
Full kitchen renovations planned around how you actually cook and gather — new layouts, cabinetry, counters, lighting and finishes, built by one crew from demo to final walkthrough.
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Bathroom Remodeling
Bathrooms rebuilt for daily comfort and long life: waterproofing done right, tile, fixtures, ventilation and lighting, with careful protection of the rest of your home.
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Whole-Home Remodeling
Coordinated renovations across the whole house, so structure, systems and finishes are planned together instead of patched room by room.
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Home Additions
Room additions and expansions that match your existing home — foundation, framing, roof tie-ins and finishes handled under one permit and one schedule.
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ADU Construction
Accessory dwelling units for family or rental income, from feasibility and layout through permits and construction, built to California ADU rules.
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New Construction
Ground-up residential construction managed by a licensed general contractor, with clear staging, inspections and communication at every step.
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French Drain & Drainage
Our specialty: French drains and drainage systems that move water away from your foundation and hillside. Proper depth, cleanouts for maintenance, and gravel-and-fabric construction that lasts.
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Retaining Walls & Site Work
Retaining wall repair and replacement, excavation, grading and site drainage — the structural outdoor work that keeps Bay Area hillside properties stable.
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Concrete & Hardscape
Driveways, walkways, patios and concrete bases poured and finished cleanly, including channel drains set into existing concrete or tile with careful cutting.
Learn more →Planning a project in Berkeley?
Start with the free instant estimator on our home page for a ballpark range, or send the form below and we will schedule a free site visit in Berkeley. For drainage and retaining-wall work the visit matters most: slope, soil and discharge options decide the right design, and we check all three in person before quoting.