Seattle Plumbing Cost Calculator
Estimate 2026 Seattle plumbing installs: a 50-gallon gas or a tankless water heater, a kitchen sink, a 36-inch vanity, a toilet, a garbage disposal (you supply the unit), a replaced or refinished bathtub, or an outdoor faucet. Switch on each item you need, set the quantity, and the calculator totals the prices. Replacing a standard 50-gallon gas water heater, with the permit, comes to about $1,520.
Replacing fixtures as part of a remodel? The bathroom calculator and the kitchen calculator price the whole room. For a firm number, request a quote.
Your Estimate
Pick what you need and click Calculate
Each item shows its price per unit
What this calculator captures
Installed prices from this calculator, each item on its own. The gas water heater price includes the permit. Vanities, toilets, garbage disposals, bathtubs and outdoor faucets are priced in the calculator above.
- Kitchen sink
- About $361
- 50-gallon gas water heater
- About $1,520
- Tankless water heater
- About $2,375
A new kitchen sink supplied and installed. A new faucet is not included.
A standard gas tank heater, installed with the permit where the existing gas line and venting fit.
The unit, the gas or electrical line upgrades it needs, and installation.
Using this calculator
What does each price include?
Each price is the installed scope of its item. The gas water heater is a standard 50-gallon tank heater, installed where the existing gas line and venting fit. The tankless price includes the unit, the gas or electrical line upgrades it needs, and installation. The kitchen sink is supplied and installed; a new faucet is not included. The vanity is a 36-inch single vanity with a cultured-marble top, supplied and installed. The toilet is a standard toilet, supplied and installed. The garbage disposal price is labor: the old disposal taken out and hauled away, and a new unit you supply mounted and reconnected. A replaced bathtub is the old tub out and a standard alcove tub in; repairing the wall around it is priced separately. Refinishing reglazes the tub you have, and the outdoor faucet is supplied and installed.
Is the permit included?
The 50-gallon gas water heater price includes the permit. The other items' prices do not include one. To compare plumbing permit rules, fees and review times across cities, see /permits/compare/plumbing.
Is there a job minimum?
No. Every item is priced on its own, so replacing a garbage disposal with a unit you supply comes to about $133 in labor, an outdoor faucet to about $143, and refinishing a bathtub to about $428.
How are these prices set?
These are Kolmo's own prices: materials from our catalog and labor from our rate table, priced for 2026 Seattle-area work. Every estimate is itemized so you can see what makes up the total, and the final price is set after a walkthrough. More at /how-estimates-work.
What doesn't the calculator price yet?
This calculator prices installs. Indoor faucets, shower valves, dishwashers, electric tank water heaters, and installing a toilet you supply (labor alone) are not in it yet; they are quoted after a walkthrough.
Keep planning
Continue the planning once you have a number.