Quick Answer: Raising the ceiling height in a San Jose home costs $18,000-$55,000 for a typical single room (living room or master bedroom) in a single-story ranch home. This involves: (1) removing the existing flat ceiling (drywall and attic floor); (2) re-framing the ceiling to expose the roof rafters or adding new roof framing (vaulted ceiling); (3) insulating the new sloped ceiling (typically with spray foam on the underside of roof sheathing for a cathedral ceiling); (4) installing new drywall on the new ceiling plane; (5) HVAC modification (reconfiguring ducts or adding mini-split); (6) extending electrical for new ceiling lights. The cost is higher if the existing ceiling is flat (attic above) vs. an existing vaulted space. A structural engineer must confirm the roof framing can accommodate the change. Building permit required.
Ceiling Raise Cost Breakdown — San Jose 2025
| Scope | Cost Range | Notes |
|---|---|---|
| Vault ceiling in single room (living room, ~350 sq ft) | $18,000 – $40,000 | Expose roof rafters, new spray foam insulation, drywall |
| Vault ceiling in master bedroom (~250 sq ft) | $14,000 – $30,000 | Smaller area but same structural work |
| Raise ceiling throughout main living area (open plan) | $35,000 – $80,000 | Requires roof re-frame above kitchen-living area |
| Structural engineering (required) | $1,500 – $4,000 | Included in ranges above |
| HVAC modification (new ductwork or mini-split) | $2,500 – $7,000 | Included in ranges above |
Quartz Construction raises ceiling heights and vaults ceilings in San Jose homes as part of renovation and room addition projects. We coordinate structural engineering, permits, and all trade work. CSLB #1003436 | Call (650) 749-7436.
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