Sprinkler system cost in Seattle, WA
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (4,000 sq ft of lawn)
- $4,950 – $12,400
- Per sq ft of lawn
- $1.25 – $3.10
- before permit
- Versus US midpoint
- +24%
- US $7,000
- Rank of 300 metros
- #8
- 1 = most expensive
Seattle homeowners pay roughly $4,950 to $12,400 to install a sprinkler system at 4,000 sq ft of lawn, or $1.25 to $3.10 per sq ft of lawn (permit not included). Against the US midpoint, Seattle is 24% higher. Plumbers, pipefitters and steamfitters earn a median of $45.78 an hour in the Seattle area, 49% above the US median of $30.67.
Estimate your sprinkler system cost
Pick a size, a quality level and where you live. Prices update as you type.
Estimated cost for 4,000 sq ft of lawn in Seattle, WA, standard level
$7,200 to $10,200
About $1.80 to $2.55 per sq ft of lawn before permits. Labor is about 60% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $2,900 | $4,100 |
| Labor | $4,300 | $6,050 |
| Permits and fees | $0 | $0 |
| Total | $7,200 | $10,200 |
Cost breakdown for 4,000 sq ft of lawn in Seattle, WA
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $2,000 | $3,500 | $5,000 | 40% |
| Labor | $2,950 | $5,200 | $7,400 | 60% |
| Permits and fees | $0 | $0 | $0 | 0% |
| Total | $4,950 | $8,700 | $12,400 | 100% |
Where the Seattle price comes from
We price the labor side from BLS wage data for 3 trades: plumbers, pipefitters and steamfitters at 40%, construction laborers at 40%, operating engineers and other construction equipment operators at 20%. Weighted together, Seattle wages are 1.42 times the national level. Labor makes up about 60% of the midpoint estimate (52% at national prices).
On the materials line, the BEA goods price index for the Seattle metro is 104.0 (US = 100). The midpoint materials bill for 4,000 sq ft of lawn comes to $3,500, compared with $3,350 at national prices. Permit and inspection fees are scaled by the broader index (111.1) and land at $0 to $0.
Related projects, priced for Seattle
Because every project leans on different trades, Seattle's wage level does not move all prices equally. Against the US midpoint, French drain runs +26% and sod installation +14%.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Sod installation | 1,500 sq ft | $1,700 – $3,750 | +14% |
| French drain | 60 linear ft | $750 – $2,650 | +26% |
| Retaining wall | 200 sq ft of wall face | $9,200 – $16,300 | +25% |
| Concrete patio | 300 sq ft | $1,450 – $4,950 | +22% |
| Inground pool | 450 sq ft | $45,300 – $141,500 | +25% |
How Seattle compares
Contractors rarely work more than an hour or two from home, so the neighboring metros set a rough ceiling and floor for your quotes. Midpoints for 4,000 sq ft of lawn range from $7,300 to $8,800 across Seattle and its five closest metros.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Seattle, WAthis page | $4,950 – $12,400 | $8,700 | |
| Bremerton, WA40 miles | $4,600 – $11,500 | $8,050 | −7% |
| Olympia, WA60 miles | $4,700 – $11,800 | $8,250 | −5% |
| Yakima, WA90 miles | $4,150 – $10,400 | $7,300 | −16% |
| Bellingham, WA95 miles | $5,000 – $12,600 | $8,800 | +1% |
| Portland, OR135 miles | $4,850 – $12,100 | $8,500 | −2% |
| Washington (statewide) | $4,650 – $11,600 | $8,150 | −6% |
| United States | $4,000 – $10,000 | $7,000 | −19% |
Across 300 US metros, Seattle comes in at #8 from the top. The priciest is San Jose, CA at $9,600; the cheapest is McAllen, TX at $5,750 (midpoints, 4,000 sq ft of lawn). Statewide, Seattle is 7% above the Washington figure.
Other Washington metros
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Spokane, WA | 255,820 jobs | $4,400 – $11,000 | $7,650 | −12% |
| Olympia, WA | 130,300 jobs | $4,700 – $11,800 | $8,250 | −5% |
| Kennewick, WA | 129,490 jobs | $4,800 – $12,000 | $8,400 | −3% |
| Yakima, WA | 97,010 jobs | $4,150 – $10,400 | $7,300 | −16% |
| Bremerton, WA | 93,740 jobs | $4,600 – $11,500 | $8,050 | −7% |
| Bellingham, WA | 91,390 jobs | $5,000 – $12,600 | $8,800 | +1% |
Cities with a workforce like Seattle's
Big cities and small ones price differently, so here is Seattle against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| San Francisco, CA | 2,373,920 jobs | $5,250 – $13,100 | $9,200 | +6% |
| Minneapolis, MN | 1,951,650 jobs | $5,000 – $12,400 | $8,700 | level |
| Phoenix, AZ | 2,375,760 jobs | $3,900 – $9,800 | $6,850 | −21% |
| Detroit, MI | 1,904,530 jobs | $4,500 – $11,300 | $7,900 | −9% |
Local wages behind the labor line
Wages are the part of this estimate that changes most from town to town. 3 trades carry the job here, and each is compared with its US median. The weighted result for Seattle is 1.42 times the national level.
For plumbers, pipefitters and steamfitters (47-2152, weighted 40%) the local median is $45.78 an hour, which is 49% above the national $30.67. The middle half of them earn between $29.83 and $60.93 an hour. BLS counts 6,350 of them working in the area, 30.4 for every 10,000 jobs (US: 30.0), so the local bench is about average.
Construction laborers (47-2061), 40% of the weighting: a median of $28.72 an hour, 27% above the US median of $22.66. The middle half of them earn between $23.67 and $37.03 an hour. About 13,040 work in the metro. That is 62.5 per 10,000 jobs, compared with 70.5 nationally, so the supply of crews looks typical.
For operating engineers and other construction equipment operators (47-2073, weighted 20%) the local median is $46.04 an hour, which is 60% above the national $28.78. The middle half of them earn between $36.13 and $58.78 an hour. BLS counts 4,860 of them working in the area, 23.3 for every 10,000 jobs (US: 30.7), so the local bench is thinner than average.
Quotes come from real crews, not medians. If the plumbers, pipefitters and steamfitters on your job are paid at the 75th percentile ($60.93 an hour) instead of the median, the labor line grows by about $720. At the 25th percentile ($29.83) it shrinks by about $760. The total moves by 8.3% or 8.7%, so wages alone rarely explain a quote that is far outside our range.
For context on the local economy, BLS counts 2,086,210 jobs in the Seattle-Tacoma-Bellevue area. That makes it the 13th largest of the 300 metros we cover, with 1.34% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Plumbers, pipefitters and steamfitters (47-2152) | 40% | $29.83 | $45.78 | $60.93 | $30.67 | 1.49 | metro |
| Construction laborers (47-2061) | 40% | $23.67 | $28.72 | $37.03 | $22.66 | 1.27 | metro |
| Operating engineers and other construction equipment operators (47-2073) | 20% | $36.13 | $46.04 | $58.78 | $28.78 | 1.60 | metro |
| Blended | 100% | 1.42 | |||||
Seattle: what basic, standard and premium work costs
Three bands are cut from the same cited range and localized for Seattle wages and prices. They overlap on purpose: a good standard job and a modest premium job can cost the same. The grid below prices the same bands at 3 common sizes.
Basic
$4,950 to $7,950
Few zones, simple rectangular lawn
Standard
$7,200 to $10,200
Standard zoned in-ground system with controller
Premium
$9,400 to $12,400
Irregular yard, many zones, slopes or rock
| Size | Basic | Standard | Premium |
|---|---|---|---|
| small yard (2,000 sq ft of lawn) | $2,500 – $3,950 | $3,600 – $5,100 | $4,700 – $6,200 |
| quarter acre (10,000 sq ft of lawn) | $12,400 – $19,800 | $18,000 – $25,400 | $23,600 – $31,000 |
| average lawn (4,000 sq ft of lawn) | $4,950 – $7,950 | $7,200 – $10,200 | $9,400 – $12,400 |
Specs and site conditions that change a Seattle bid
Lawn shape
Irregular, rocky or sloped yards need more pipe and zones and can reach $4.00 per sq ft.
Backflow and permits
Backflow preventers and plumbing permits are local rules; check with your water utility.
Zones
HomeGuide prices sprinklers at $600-$2,000 per zone; $3,000-$10,000 total for a quarter-acre lawn.
When to schedule sprinkler system in Seattle
We use NOAA's 1991-2020 climate normals for Seattle Sand Pt Wsfo (5 miles from the city center). These are 30-year monthly averages, not forecasts.
Weather is not a serious constraint for digging, grading and setting material in the ground in Seattle: no month in the averages is cold enough (an average overnight low at or below freezing (32°F)) or hot enough (an average daytime high of 90°F or more) to rule it out, so the workable window is all year.
Seattle gets about 38 inches of precipitation in a normal year, including roughly 4 inches of snow. The wettest months are January, November and December (5.8 inches in November). The station averages about 2 days a year at 90°F or above.
Does the season change the price? Probably, but we do not have a sourced seasonal price curve, so the estimator shows a year-round figure and does not adjust by month. When you collect quotes, ask whether scheduling in a slower month gets a better rate.
| Month | Avg high °F | Avg low °F | Precip (in) | For this job |
|---|---|---|---|---|
| Jan | 47 | 37 | 5.1 | Workable |
| Feb | 50 | 37 | 3.5 | Workable |
| Mar | 54 | 39 | 3.9 | Workable |
| Apr | 59 | 43 | 3.0 | Workable |
| May | 65 | 48 | 2.2 | Workable |
| Jun | 70 | 53 | 1.6 | Workable |
| Jul | 77 | 57 | 0.8 | Workable |
| Aug | 77 | 57 | 1.0 | Workable |
| Sep | 71 | 53 | 1.7 | Workable |
| Oct | 61 | 47 | 3.6 | Workable |
| Nov | 52 | 41 | 5.8 | Workable |
| Dec | 47 | 37 | 5.5 | Workable |
Get 3 local quotes
Tell us about the job and we will try to connect you with up to three local contractors for written quotes. It is free and you are under no obligation to hire. Your estimate of $7,200 to $10,200 for Seattle, WA is attached.
A detailed PDF report of this estimate, $9
The report lays out the sprinkler system numbers for Seattle, WA line by line, with the local wage and price inputs, permit and timing notes, a quote comparison sheet and the full method. Save your estimate above, preview page 1 free, and unlock the full report for $9 one-time, or get every report with CostLocal Pro.
Sprinkler system in Seattle: your questions
+How much does it cost to install a sprinkler system in Seattle?
For 4,000 sq ft of lawn, expect $4,950 to $12,400 in the Seattle area. A standard-spec job lands at $7,200 to $10,200. Small jobs usually cost more per sq ft of lawn and large ones less.
+What is the price per sq ft of lawn for sprinkler system in Seattle?
About $1.25 to $3.10 per sq ft of lawn for materials and labor, plus $0 to $0 for the permit if one is needed. The US range is $1 to $2.50.
+Is sprinkler system cheaper in Seattle or Bremerton?
Bremerton is 40 miles away. The midpoint for 4,000 sq ft of lawn there is $8,050, which is 7% less than Seattle ($8,700). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Seattle?
About 60% at the midpoint, or $5,200 out of $8,700. Materials are 40% and permits 0%. Nationally, labor is 52%.
+What would quarter acre (10,000 sq ft of lawn) cost in Seattle?
$12,400 to $31,000. Pick a different size in the estimator above to get your own number.
+Does sprinkler system need a permit in Seattle?
Often, but rules are set by your city or county building office, so call before you hire. Budget $0 to $0 for fees in the Seattle area (our national range of $0 to $0 scaled by the local price level).
+Is Seattle expensive for sprinkler system compared with the rest of Washington?
Seattle is 7% above the Washington statewide estimate ($8,150 at the midpoint). We cover 7 metros in Washington; see the state page to compare them.
+What do plumbers, pipefitters and steamfitters earn in Seattle?
The BLS median is $45.78 an hour in the Seattle area, compared with $30.67 nationally. The 25th to 75th percentile range is $29.83 to $60.93.
+What do basic and premium sprinkler system work cost in Seattle?
For 4,000 sq ft of lawn, basic work runs $4,950 to $7,950 and premium work $9,400 to $12,400. Basic means: few zones, simple rectangular lawn. Premium means: irregular yard, many zones, slopes or rock.
+Is there a bad season to install a sprinkler system in Seattle?
Not from a temperature point of view. NOAA's 1991-2020 normals show no month with a freezing-level overnight low or a 90°F-plus average high, so timing is mostly about contractor availability and rain.
Sprinkler system near Seattle
Where these numbers come from
Base prices are national ranges from the sources below. We scale labor by local BLS wages, materials by BEA goods prices and permits by the BEA all-items price level. Full method on the methodology page.
- HomeGuide: How Much Does a Sprinkler System Cost? (2026) (accessed November 4, 2026)
- Cost to Renovate: Renovation Labor Report 2026: Where the Money Goes (accessed November 4, 2026)
- BLS Occupational Employment and Wage Statistics, May 2025
- BEA Regional Price Parities, 2024
- NOAA NCEI U.S. Climate Normals, 1991-2020
Note on derived figures: Materials = 48% of the installed price, from Cost to Renovate's mid-range 'Outdoor Living' category split. It is a category average rather than an irrigation figure.