How Much Does a Plumber Cost in the South Bay? (2026 Real Numbers)

"How much will it cost?" is the first thing every homeowner asks. Most plumber sites bury it under "starting at" or "call for quote." Here are the honest numbers I quote on the phone, by job type, in 2026 dollars in the South Bay.

Drain & sewer work

• Standard drain snake (single fixture): $125–$250.
• Main line snake: $250–$400.
• Hydro jetting (kitchen or main): $350–$600.
• Sewer camera inspection: $250–$400 (refunded against repair if you book within 30 days).
• Spot sewer repair (dig, cut, replace 5–15 ft): $1,800–$4,500.
• Trenchless full lateral replacement: $4,000–$12,000.
• Open-trench full lateral replacement: $7,000–$18,000.

Water heaters

• Tank water heater service call (thermocouple, T&P, anode rod): $200–$650.
• Tank-for-tank install (40 or 50 gal): $1,800–$2,800 fully installed, permitted, hauled away.
• Tankless water heater install (like-for-like, gas line OK): $3,500–$5,000.
• Tank-to-tankless conversion (with gas line + venting upgrades): $4,500–$7,500.
• Annual tankless descale: $180.

Leaks & repairs

• Leak detection diagnostic (acoustic + tracer gas): $250–$500.
• Slab leak spot repair: $1,500–$3,500 depending on flooring above.
• Reroute a slab line through wall/attic: $2,000–$4,500.
• Whole-house copper or PEX repipe: $8,000–$18,000 for a 3-bed home.
• Toilet replacement: $400–$700 plus toilet.
• Faucet replacement: $200–$400 plus faucet.
• Garbage disposal replacement: $250–$450.

Gas lines

• New gas line for a range or dryer: $400–$1,200.
• Gas line upgrade for tankless water heater: $1,500–$3,000.
• Gas leak diagnosis & repair: $250–$700.
• Outdoor BBQ stub-out with shutoff: $600–$1,400.

Why prices vary

Most of the variance comes from access. Sewer lines under a finished basement floor cost more than sewer lines accessible from a side yard. Water heaters in a tight closet with three other appliances stacked on top take longer than ones in an open garage. We tell you which end of the range you fall on after a 5-minute look.

What we never charge for

• Coming out to look at a slab leak or a sewer back-up if it's in our service area.
• "Trip fees" for the first visit.
• "Diagnostic fees" stacked on top of repairs we end up doing.
• Weekend or after-hours premium during normal business hours (Mon–Sun, 8am–5pm).

Call (310) 944-1213 for a real number on your specific job. We'll either quote it on the phone or give you a written estimate after a visit — and we'll never start work without you signing it.