Quick Answer: Repiping a house in San Jose costs $8,000-$20,000 for a full PEX (cross-linked polyethylene) repipe of all supply lines in a 2-3 bedroom, 2-bath home — this includes all hot and cold supply lines from the main water shutoff to every fixture, plus patch-and-paint of all drywall access holes. A 4-5 bedroom home costs $15,000-$30,000. The most common reason for repiping in San Jose is failing galvanized steel pipes (common in homes built before 1970) which corrode from the inside, causing brown water, low pressure, and pinhole leaks. PEX is the current standard — it’s flexible (fewer joints than copper), resistant to scale buildup, and lasts 50+ years. A plumbing permit is required for repipe work in San Jose — expect 1-3 weeks for permit approval, and 2-4 days for the actual work.
Repipe Cost by Home Size — San Jose 2025
| Home Size | Bedrooms/Baths | Full PEX Repipe Cost |
|---|---|---|
| Small home | 1-2 bed / 1 bath | $6,000 – $12,000 |
| Medium home | 3 bed / 2 bath | $9,000 – $18,000 |
| Large home | 4-5 bed / 3 bath | $14,000 – $28,000 |
| Very large home | 5+ bed / 4+ bath | $22,000 – $40,000 |
| With copper (vs. PEX) | Any | Add 30-50% to PEX cost |
| Patch and paint (drywall repair after repipe) | Any | $1,500 – $4,000 (usually included) |
Quartz Construction coordinates plumbing repipe as part of whole-home renovations and remodels in San Jose. We handle the permit, plumbing sub-contractor, and drywall repair in-house. CSLB #1003436 | Call (650) 749-7436.
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