Quick Answer: Adding a fireplace to a San Jose home costs $3,000-$30,000+ depending on the type. A gas fireplace insert (installed into an existing masonry fireplace) costs $3,000-$8,000. A new gas direct-vent fireplace installed in a wall or room addition costs $8,000-$20,000 including framing, drywall surround, and gas line extension. A new wood-burning masonry fireplace is the most expensive at $12,000-$30,000+ — and faces significant Bay Area air quality restrictions (BAAQMD prohibits wood burning on Spare the Air days, and since 2016 new wood-burning fireplaces are prohibited in many Bay Area jurisdictions). Gas fireplaces require a building permit in San Jose.
Fireplace Addition Cost Breakdown — San Jose 2025
| Type | Cost Installed | Notes |
|---|---|---|
| Gas fireplace insert (into existing masonry) | $3,000 – $8,000 | Easiest option — uses existing chimney |
| New gas direct-vent fireplace (in wall) | $8,000 – $20,000 | No existing chimney needed; vents through exterior wall |
| New gas fireplace (vertical flue/chimney) | $12,000 – $25,000 | Full chimney chase construction included |
| Electric fireplace insert (no gas/venting) | $800 – $3,500 | No permit in most cases; decorative only |
| Wood-burning masonry fireplace | $18,000 – $35,000+ | Restricted or prohibited in Bay Area |
| Ethanol/gel fuel fireplace | $1,500 – $5,000 | No venting required; limited heat output |
Bay Area Air Quality Rules for Fireplaces
The Bay Area Air Quality Management District (BAAQMD) prohibits all wood burning — including pellet stoves — on “Spare the Air” days (typically November through February). Since 2016, BAAQMD Regulation 6 Rule 3 prohibits installation of new wood-burning fireplaces and stoves in Bay Area homes. Gas fireplaces are exempt from these burning restrictions and are the recommended option for new fireplace additions in San Jose.
Quartz Construction installs gas fireplaces and designs custom fireplace surround work as part of room additions and living room renovations in San Jose. CSLB #1003436 | Call (650) 749-7436.
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Quartz Construction & Remodeling | CSLB #1003436 | Licensed, Bonded & Insured
Phone: (650) 749-7436
Address: 1777 Hamilton Ave #1080, San Jose, CA 95125
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Service Area: San Jose, Santa Clara, Sunnyvale, Mountain View, Los Gatos & Bay Area
