How much does plumbing cost nationally?
That is the modeled cost to deliver plus a fair contractor margin for plumbing in the United States, not a sales quote. Built from BLS wage data, Craftsman bills of materials, and verified permit fees. 2026-07-11
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The margin is the gap between break even and a typical quote, not a markup we invent. Margins float by trade and city, with most fair jobs at a 15 to 22 percent margin on the bid, about 18 to 28 percent over the cost to deliver. Nobody works for free. Full methodology.
Every plumbing number here starts as parts: Craftsman labor hours priced at BLS wages for your metro, materials tracked against producer prices, permit data where cities publish it, and real contractor overhead. Cost index version: 2026-07-11. Updated Jul 2026.
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We route your ZIP to the nearest tracked city and show city-level bid fairness, true cost, margin, and lowest realistic price data.
What the plumbing benchmark includes.
- Water Heater Installation as the headline cost-index scope
- labor-hour assumptions, regional wage inputs, materials, overhead, and permit data where available
- low, average, high, lowest realistic price, margin, and savings benchmarks from the FatBook cost index
- hidden damage, change orders, emergency service premiums, or unusual site access conditions
- contractor financing approval, warranties, provider recommendations, or guaranteed final quotes
- permit rulings for a specific address unless the city permit panel lists verified local data
National benchmarks.
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| Service | Low | Average | High |
|---|---|---|---|
| Water Heater Installation · 50 gallon | $1,764 | $2,004 | $2,261 |
| Tankless Water Heater | $3,332 | $3,792 | $4,287 |
| Plumbing Repairs | $239 | $273 | $309 |
| Hot Water Dispenser Installation | $1,097 | $1,252 | $1,418 |
| Water Pipe Replacement · 100 linear ft | $2,278 | $2,586 | $2,918 |
| Drain Pipe Replacement · 50 linear ft | $1,494 | $1,691 | $1,904 |
| Laundry Tub Installation | $729 | $818 | $915 |
| Water Softener Installation | $1,760 | $1,995 | $2,248 |
Cost by city.
Additional Markets
Latest research.
Questions homeowners ask about plumbing.
Note: dollar figures below are national averages from our v3 cost index (Craftsman labor hours x BLS regional wages + PPI-adjusted materials + verified permit fees + NAHB overhead). Where an answer references general industry estimates instead (timing, lifespan, resale recoup percentages, scope items outside our index), it says so explicitly. For metro-specific numbers, see the cost-index pages.