Tankless Water Heater Installation Cost in Kansas City, MO
Based on 399 tankless water heater installation building permits filed in Kansas City between 2015 and 2025, the typical declared project value is $4,000, with most landing between $3,500 and $5,780. These are real records from Kansas City's public building-permit data, declared job values, not contractor estimates or AI guesses.
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Tankless Water Heater Installation values over time in Kansas City
Median declared value moved from $4,000 in 2020 to $5,496 in 2025, up 37% over that span. Each year below is computed from the filings that actually cleared in Kansas City.
Recent tankless water heater installation permits in Kansas City
Actual filings from Kansas City's public permit records. Declared job values, not final paid prices.
| Filed | Declared value | Work described |
|---|---|---|
| 2025-04-23 | $4,900 | Replace water heater Gas Tankless water heater 199k btu (see spec sheet in attachments) |
| 2025-04-21 | $6,434 | install tankless water heater unit |
| 2025-04-17 | $3,500 | replace water heater Tankless water heater (Gas) 199k btu |
| 2025-04-04 | $7,106 | replacing tankless gas water heater |
| 2025-03-25 | $6,092 | Replace tanked water heater with tankless water heater - no other alterations to plumbing |
| 2025-03-12 | $6,789 | replace gas water heater with tankless gas water heater |
| 2025-03-04 | $2,500 | Replace water heater Installing Tankless gas water heater 199k btu |
| 2025-02-20 | $2,401 | replace existing tankless gas water heater (in kind) |
| 2025-02-13 | $6,329 | Install a tankless RXP199 water heater |
| 2025-02-06 | $1,200 | Installing new Rinia 199k BTU tankless water heater. - we are replacing like for like ** |
| 2024-12-12 | $15,000 | SCOPE OF WORK INCLUDED: • Install a tee on the gas line to a new gas stove in the kitchen |
| 2024-12-05 | $3,647 | Install Rinnai Tankless 180000 BTU 10 GPM condensing water heater Gas pressure test |
| 2024-12-04 | $1,000 | Install DWV, drain lines, interior water lines and tankless water heater for single family |
| 2024-11-25 | $7,900 | DWV water lines for ADU - install tankless intanthot water heater |
| 2024-11-21 | $5,000 | DWV and water lines and ground rough in for new sfh and install tankless water heater and |
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Add your price →How to read these numbers
A permit's declared value is the job cost the owner or contractor stated when they pulled the permit. It tracks the real cost of the work but can run a bit under what was actually paid, since it often leaves out some labor and finish costs. Treat the range as a grounded starting point. What tankless water heater installation actually costs in Kansas City comes down to home size, materials, and scope.
Where this comes from
Every figure is pulled from Kansas City's public building-permit records and classified by the work described. Nothing is estimated or AI-generated. How the data works. The moment a Kansas City homeowner adds a real receipt, this page upgrades to show what neighbors actually paid next to these permit values.
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