Thinking about putting in a fiberglass pool? Use this guide to learn about fiberglass pool costs in Seattle, WA.
How Much Does a Semi-Inground Pool Cost in Seattle, WA? [2026 Data]
Pool construction and installation costs depend on your project and location. Check with a local pro for your specific job.
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Cost Insights
Semi-inground pool costs in Seattle, WA, range from $15,000 to $70,000, depending on size and material.
A precast concrete pool costs approximately three times more than an aluminum or resin pool.
Adding a vinyl liner to your pool will cost an average of $30,000.
Hiring a Seattle, WA, pool installer ensures a quality installation and permit compliance and can help yield a return on investment (ROI) of up to 30%.
Because of the much higher-than-average cost of living in Seattle, WA, it’s no surprise that costs for home services like pool installation are higher as well. Semi-inground pool costs in Seattle, WA, range from $7,777 to $22,220, with an average cost of $13,332. Your final price will vary based on pool size, the material you choose, and the labor rates charged by your local pool installer.
Semi-Inground Pool Cost Factors
Pool size and material are the main cost factors to consider when installing a semi-inground pool in Seattle, WA.
Size
One of the first things to consider when putting in a pool is the size. The larger your semi-inground pool, the higher the cost, with prices ranging from $15,000 for a 10-foot-diameter pool to $35,000 for a 24-foot-diameter pool. Standard pools in prefabricated shapes will cost less than those with custom measurements. Most semi-inground pools are between three and eight feet deep, depending on your preference.
Here’s how your semi-inground pool cost will vary based on pool size:
| Pool Size (Feet) | Average Cost |
|---|---|
| 10 | $15,000 |
| 12 | $18,500 |
| 16 | $20,000 |
| 20 | $25,000 |
| 22 | $27,500 |
| 24 | $30,000 |
Angi Tip
No time to maintain your pool? Most pool contractors offer seasonal maintenance. Talk to your pro about scheduling check-ups to keep your pool healthy.
Materials
Like any other type of pool, the material used for your semi-inground pool will impact the cost, ranging from an average of $30,000 for steel to $55,000 for concrete. Material choice can vary depending on whether you’re installing an in-ground or above-ground pool. Choose vinyl, fiberglass, or concrete to build up the land around an in-ground pool, and steel, resin, or aluminum to partially sink an aboveground pool into the land.
Because of Seattle, WA's notoriously rainy weather, the best material for your semi-inground pool is corrosion-resistant aluminum or composite resin. Here’s how your semi-inground pool material might affect the cost:
| Pool Material | Average Cost | Best For |
|---|---|---|
| Concrete | $55,000 | In-ground |
| Fiberglass | $70,000 | In-ground |
| Vinyl (liner) | $30,000 | In-ground |
| Aluminum | $17,500 | Aboveground |
| Resin | $18,500 | Aboveground |
| Steel | $37,500 | Aboveground |
Pool Pro Costs
Another vital cost factor to consider is the labor rates associated with hiring a Seattle, WA, semi-inground pool installer. Working with pros on this job ensures a quality installation, a longer-lasting pool, and compliance with permits and building codes. You can expect local pool installers to charge between $55 and $150 per hour, per worker. You also need a permit to install a pool in Seattle, WA. While permit fees should be included in your pro’s initial quote, be aware that they’ll add between $300 and $1,500 to your final costs.
Does a Semi-Inground Pool Increase Home Value?
Because of the cooler, rainy climate in Seattle, WA, pool returns on investment (ROIs) in the city are lower than in warmer parts of the country. In some cases, you could see an ROI of up to 30% from your pool when it comes time to sell the home, though this varies by pool size and material choice.
How Angi Gets Its Local Cost Data
To help homeowners plan their next project, Angi provides readers with carefully researched cost data and upholds strict editorial standards. We start with national average project costs, which we collect by analyzing competitor information, retailer material costs, and input from professional contractors. We then apply local price index data to calculate location-specific estimates that reflect what homeowners typically pay in their local area. To do that, we use data from the U.S. Bureau of Economic Analysis (BEA), including its Regional Price Parities (RPPs), which measure price differences across cities. This helps us account for differences in labor, materials, and overall cost of living, so estimates in higher- or lower-cost areas better reflect real-world local pricing.
Every estimate undergoes a thorough editorial review to verify accuracy, consistency, and alignment with observed market conditions.
Want to help us improve our cost data? Send us a recent project quote to [email protected]. Quotes and personal information will not be shared publicly.
Pool constructions and installations reviews from real Angi homeowners in Seattle, WA
4.7★ avg. • 20 total reviews
- Shari H.
Had a number of small projects needing to be done to get a rental home completed for rental. Installed plumbing fixtures, installed a couple of cabinets and kitchen appliances, washer and dryer installed. Installed a medicine cabinet and closet organizer. Vented stove and dryer. Alex and his...
Prorab Construction & Remodeling - Sophia G.
Wilkins General Construction was great. I hired them to fix my counter top which had started molding, and change some lights fixtures for me. Reasonable pricing and very responsive.
- Jennifer M.
Patterson Construction prioritizes customer satisfaction above all else. They listened to my concerns and preferences and made sure to address them throughout the project. Their dedication to ensuring I was happy with the final result was evident every step of the way.
- Maria B.
Swimming Pool Services was excellent in catering to our vision, incorporating the existing landscape, and remarkable with the details.
Advantage Pools, LLC - Carolyn B.
3Pros Construction Service & Repair saved the day when my pool filter broke down unexpectedly. Their team arrived promptly and had the filter replaced in no time. I appreciated their attention to detail and commitment to getting the job done right the first time. I wouldn't hesitate...
3Pros Construction - Donna S.
This pool is the epitome of luxury and relaxation. With its sparkling, crystal-clear water and lush surroundings, it offers a serene oasis for guests to unwind and soak up the sun. The poolside cabanas provide the perfect spot to lounge with a refreshing cocktail, while the attentive staff...
- Tracey L.
Drew and his team installed a water heater, garbage disposal, toilet replacement. patched and textured a wall and installed a new bath fan. The work was quality on time, and professional. The space was clean and the team was friendly and efficient.
Rosman Renovations, LLC - Jennifer B.
I recently remodeled my kitchen and bathroom, and I couldn't have done it without Vasa Construction, LLC. The staff went above and beyond to help me find the perfect fixtures and accessories to suit my style and budget. The installation team was professional and efficient, ensuring...
Vasa Construction, LLC - Vivian C.
The work to install a heat pump was professionally done and in a timely manner. He worked with with us to plan placement with limited potential locations and difficult access. And he came back after installation to answer questions and be sure we were happy with it.
Derr Heating & Cooling LLC - Marian M.
If you need construction on your house...call All Construction Needs LLC! Adrian and the team are incredible. They are responsive, respectful, trustworthy and timely. I had a water leak that required replacement of flooring, walls and paintwork/trim in my new construction condo. The...
Realty Group Construction, LLC
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