How much does a boiler job cost in Seattle? The usual boiler job filed with Seattle is $15,000, from 392 priced permits (October 2023 through September 2026); the middle half of firms file between $10,600 and $21,943. A filed value is what the contractor wrote on the permit, not a quote or the final bill.
The usual boiler job filed with Seattle is $15,000, from 392 priced permits, October 2023 through September 2026. The middle half of firms usually file between $10,600 and $21,943. Half of jobs were filed for less, half for more. A filed value is what the contractor wrote on the permit, not a quote or the final bill. A boiler permit here usually takes 24 days from issue to final inspection. How long permits take →
Approximately, from each firm's own spread: every firm's range of filed values, weighted by its 392 priced permits across 35 firms, pooled into one. Half of Seattle boiler permits were filed between $8,700 and $22,400.
| Percentile | Filed value | Reads as |
|---|---|---|
| 10th | $7,100 | 1 in 10 permits filed below |
| 25th | $8,700 | 1 in 4 filed below |
| 50th | $15,000 | the middle permit |
| 75th | $22,400 | 1 in 4 filed above |
| 90th | $31,800 | 1 in 10 filed above |
Firms split into thirds by the usual value of the homes they work on, with each third's usual filed value weighted by permits. Home values: King County Assessor appraised values.
| Firms working on | Usual home value | Usual filed value | Firms | Permits |
|---|---|---|---|---|
| Lower third | under $1,446,000 | $14,000 | 11 | 67 |
| Middle third | $1,446,000–$1,909,000 | $10,600 | 12 | 333 |
| Upper third | $1,949,000 and up | $20,000 | 12 | 26 |
Top 10 by permits in the last 12 months. Usual is each firm's middle filed value; middle half is the range its middle half of jobs were filed in. Busy is not the same as careful: pick what you value to build a list.
| Firm | Permits | Last 12 mo | Usual | Middle half | Finished |
|---|---|---|---|---|---|
| Northwest Mechanical | 107 | 40 | $8,500 | $8,000–$10,000 | 96.5% |
| Carlson Mechanical | 73 | 36 | $19,980 | $17,680–$23,493 | 98.6% |
| Greenwood Htng & Home Services | 61 | 24 | $25,500 | $20,000–$32,500 | 96.5% |
| Energy Works LLC | 39 | 14 | $10,600 | $8,000–$15,400 | 91.3% |
| Premier Mech and Electric LLC | 9 | 7 | $20,000 | $15,000–$20,000 | — |
| Green City Htg & A/C Inc | 27 | 6 | $9,300 | $6,500–$11,925 | 82.3% |
| The Janes Company, Inc | 13 | 5 | $7,000 | $3,000–$10,000 | 5 of 8 |
| Fischer Services | 9 | 5 | $18,576 | $15,947–$20,901 | — |
| Gene Johnson Plbg Htg Elec LLC | 20 | 4 | $21,250 | $16,600–$27,750 | 65.4% |
| All Climate Inc | 12 | 4 | $10,258 | $8,611–$11,761 | 9 of 9 |
Line your quote up against the file. In Seattle, 1 in 10 boiler filed values sit under $7,100, the middle half between $8,700 and $22,400, and 1 in 10 over $31,800.
Seattle files the fewest boiler permits in August (50 against an average month of 100) and the most in January (149). If you can choose, ask for quotes in a quiet month. We have no prices by month, so this is about crews' schedules, not a discount. When each trade is busiest in Seattle →
Source: City of Seattle (SDCI) building, trade and electrical permits on single-family and duplex homes (the city's open-data exports). The window is October 2023 through September 2026; a permit filed after that isn't here yet.
Usual is the middle permit: half were filed for less, half for more. Only permits with a filed value count; a value of $0 or none is left out.
The spread is approximate: we keep seven points of each firm's own range of filed values, not every permit, and pool them.
Nobody paid to be on this page and nobody can. How the records work in Seattle →
Other job costs in Seattle: Furnace & Heating · Heat Pump & AC · Solar & Battery · Roofing · Stairlift & Home Elevator · Fire Sprinkler