Quick Answer: Adding a walk-in closet to a master bedroom in San Jose costs $3,000-$8,000 to convert an adjacent space (second bedroom closet, dead wall space, or reclaim from a hallway) into a walk-in closet with custom shelving and lighting. Building a new walk-in closet addition (extending the master bedroom footprint into an adjacent garage or room) costs $12,000-$30,000 for a 60-100 sq ft addition including framing, drywall, electrical for lighting and outlets, HVAC extension, and custom closet system (California Closets, Closet Factory, or custom cabinetry). The most popular walk-in closet features in San Jose homes: floor-to-ceiling custom cabinetry with double hanging rods, center island with drawers, integrated lighting (LED recessed + vanity mirror lighting), and a full-length mirror. A 10×12 foot walk-in closet with high-end built-ins typically runs $8,000-$18,000 for the closet system alone (after the room is built).
Walk-In Closet Addition Cost by Scope — San Jose 2025
| Scope | Cost Range |
|---|---|
| Convert adjacent hall closet to walk-in (no new walls) | $3,000 – $6,000 |
| Reconfigure existing bedroom space into walk-in | $4,000 – $9,000 |
| New walk-in closet addition (60 sq ft, framing + finishes) | $12,000 – $22,000 |
| New walk-in closet addition (100 sq ft) | $18,000 – $35,000 |
| Custom closet system (10×12 room, high-end) | $8,000 – $18,000 |
| Walk-in with island and vanity area | $15,000 – $30,000 (system only) |
Quartz Construction adds walk-in closets as part of master suite additions and primary bedroom remodels throughout San Jose. CSLB #1003436 | Call (650) 749-7436.
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