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Plumbers · updated Nov 4, 2026
Tankless water heaters on Seattle plans
More than 10 projects in progress
whose plans call out a tankless water heater.
The plans show the heater, gas or electric, and where it goes. The gas line, the venting and the water lines go in with the plumbing rough-in.
See the projects - 3 freeNo card. Names and phone numbers are inside the app. En español
Projects with tankless water heaters on the plansThe other projects in progress a plumbing company seesEach dot is one project, moved to its own spot inside a square about 450 m across: no dot sits on a house.Imagery: USDA, USGS The National Map
What is on the plans
- "TANKLESS GAS WATER HEATER - SEE SHEET A-5.1 FOR EFFICIENCY DATA"
- "ELECTRIC TANKLESS WATER HEATER LOCATION" beside the electrical panel
- A gas combi boiler: tankless hot water and radiant in-floor heat
A good time to call: when the framing has passed and the walls are still open. In the app, search the plans for "tankless".
The phone numbers and the plans
Build Radar has a phone number on file for at least 9 in 10 of the more than 2,080 projects in progress a plumbing company sees in Seattle, and the plans for at least 6 in 10.
Counted in Build Radar's records on Nov 4, 2026: a project counts when it has the owner's, the builder's, the applicant's or the architect's phone number.
Seats and price
Each Seattle area sells a set number of plumbing seats.
| Area | Plumbing seats | Price |
|---|---|---|
| North Seattle | 3 seats | $1,000 a month |
| South Seattle | 2 seats | $1,000 a month |
Plus sales tax where it applies. Start with 3 free projects, with no card.
Questions
How many Seattle projects have tankless water heaters on the plans?
More than 10 projects whose plans call out a tankless water heater, from the public plans and permits on Nov 4, 2026.
When should I call the builder?
When the framing has passed and the walls are still open. Build Radar shows the last inspection each project passed, so you can call at the right time.
Does Build Radar have the phone numbers and the plans?
Build Radar has a phone number on file for at least 9 in 10 of the more than 2,080 projects in progress a plumbing company sees in Seattle, and the plans for at least 6 in 10.
How many seats are there?
North Seattle: 3; South Seattle: 2. $1,000 a month per area.
Where these numbers come from
Build Radar reads the public permit records and the plan sets the city posts, and its plan search finds the words on every page. Each project here was found by that search and read: code text, legends, abbreviation lists and "X or Y" options do not count. Only projects in progress count - not finished, not cancelled, not a year old with no inspection - and only the ones that trade sees in the app.
Each number is rounded down to the nearest 10, and a number under 10 is not shown. These counts are from Nov 4, 2026. Each dot on the map is moved to its own spot inside a square about 450 m across, so no dot sits on a house.
Be first on the next tankless water heaters job.
Start with 3 free projectsNo card. Pick the projects you want and see who to call.