How this number is built
We start from a 2026 national baseline for inground pool construction and apply a Washington cost factor of 1.10, which reflects local labour, permitting and material costs. That puts Washington 10% above the national average — ranked #42 of 51 from cheapest to most expensive.
That range covers an inground pool with decking and permits. Fiberglass sits at the lower end, gunite at the upper. Site access, excavation difficulty and any spa or water features move it fastest.
What moves the price
- Size and shape
- Gunite vs fiberglass vs vinyl liner
- Excavation access and soil conditions
- Decking, spa, heating and automation
Get a figure modeled for your actual home
This page is a Washington average. Enter your address and we'll model inground pool construction for your specific property, and render it on the satellite image of your home. Free, no account.
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Other Washington costs
Modeled estimate, not a quote. Figures come from 2026 national baselines adjusted for Washington; your installer sets the real price after seeing the property.