Plumbing Company Sale Price Benchmarks 2025
What are plumbing businesses selling for in 2025? A data-driven breakdown of plumbing company valuations by size, geography, and revenue quality.
Read Article →Valuation BenchmarksMay 2025 · 5 min read
Plumbing Business Valuation in Washington: Seattle Market Data 2025
Washington plumbing businesses benefit from Seattle's tech campus commercial plumbing, aging Pacific Northwest housing stock, new construction volume from extraordinary growth, and Washington's zero income tax.
JT
Jason Taken
HedgeStone Business Advisors
Washington's plumbing market is anchored by Seattle's extraordinary economic growth — Amazon and Microsoft's campus expansions require commercial plumbing at scale, new high-rise residential development requires modern plumbing installation, and the Pacific Northwest's aging housing stock (many homes built in the 1950s–1970s) is reaching end-of-life plumbing cycles. Washington's zero income tax makes plumbing exits among the most favorable on the West Coast.
Washington Plumbing Multiples
Washington plumbing businesses sell for 2.0x–4.5x SDE. Seattle metro (King, Snohomish, Pierce Counties) commands the strongest multiples — tech campus commercial plumbing for Amazon and Microsoft, new high-rise residential construction in Bellevue and Seattle downtown, and residential service demand from the region's rapidly growing population. Eastside residential (Bellevue, Kirkland, Redmond) achieves premium service pricing — average plumbing service call rates of $200–$350 per hour versus $150–$200 nationally, driven by high household incomes and high labor market wages in the Seattle area.
Tech Campus Commercial Plumbing
Amazon's South Lake Union campus and Bellevue expansion projects require commercial plumbing at extraordinary scale — thousands of employees across dozens of buildings require continuous plumbing maintenance, and Amazon's ongoing campus construction generates significant new installation work. Microsoft's Redmond campus, with its recent renovation programs and sustainability initiatives (LEED certification, water reclaim systems), requires specialized plumbing: greywater recycling systems, rainwater collection and reuse plumbing, and low-flow fixture programs. Tech campus plumbing relationships, once established, provide recurring maintenance revenue that commands EBITDA multiples rather than SDE multiples for larger businesses.
Seattle Aging Housing Stock
Seattle's established neighborhoods — Ballard, Fremont, Capitol Hill, Wallingford, and Greenwood — have large inventories of Craftsman bungalows and Tudor cottages built in the 1920s–1960s with original galvanized plumbing infrastructure that is failing or has already been replaced partially. The Seattle housing market's extraordinarily high prices ($800,000–$2M+ for homes in these neighborhoods) mean homeowners invest heavily in plumbing upgrades for home protection and resale value. Full-home repiping in Seattle's premium neighborhoods runs $18,000–$35,000 — one of the highest repiping markets on the West Coast outside of San Francisco.
Washington Capital Gains Tax Planning
Washington's zero income tax with a 7% capital gains tax on gains over $250K is favorable for plumbing exits. On a $1.5M plumbing exit, Washington sellers pay approximately $87,500 in capital gains tax — versus $148,500 in Oregon (9.9% income tax), $161,250 in New Jersey (10.75%), or $207,000 in California (13.3%). The combination of Seattle's premium plumbing market (high billing rates, tech campus commercial revenue, premium residential pricing) and Washington's near-zero effective tax rate makes Seattle plumbing exits among the best net-of-tax outcomes on the West Coast. Installment sale elections can further reduce Washington capital gains tax to near $70,000 on the same $1.5M exit.
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