How Much Does a Semi-Inground Pool Cost in Portland, OR? [2026 Data]

In Portland, OR, semi-inground pool installation costs range between $7,378 and $21,080, with most homeowners paying an average of $12,648. Portland, OR’s warm, dry summers make backyard pools an appealing home improvement, while the region's varied terrain, frequent rainfall, and local permitting requirements can influence installation methods and project costs.

Several factors affect the final price, including the pool's size, material, and shape, as well as site preparation, excavation, drainage solutions, and optional features such as decking, fencing, heating, lighting, and landscaping.

Semi-Inground Pool Cost Factors 

The price you’ll pay for a semi-inground pool in Portland, OR, depends on the pool size and the materials used. Here’s a breakdown of how these affect the cost.

Pool Size

The size of your pool makes the biggest impact on cost. The larger your semi-inground pool, the higher the cost, with prices ranging from $10,200 for a 10-foot-diameter pool to $31,800 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 size:

Materials

Another component to consider when putting in a pool is the material you choose. Steel averages $3,000, while concrete averages $22,000. Choose vinyl, fiberglass, or concrete for building up the land around an in-ground pool, and steel, resin, or aluminum for partially sinking an aboveground pool into the land.

In Portland, OR, fiberglass pools are among the most popular options because they resist algae growth, require little maintenance, and perform well in the region's wet climate and moderate temperatures. Vinyl-liner pools are another cost-effective choice for homeowners looking to reduce upfront expenses, while concrete pools are selected for highly customized installations featuring unique shapes, integrated water features, and premium landscaping. 

Here’s how your semi-inground pool material might affect the cost:

Pool Pro Costs

Homeowners in the Portland, OR, area will also need to budget for local labor, permits, insurance, and other location-specific costs that add to the installation price. Below is a breakdown of common expenses to consider when hiring a pool-building pro in Portland, OR.

Labor

Labor is one of the largest components of semi-inground pool installation costs in Portland, OR, accounting for 40% to 60% of the project cost. Pool builders charge $80 to $160 per hour, depending on the complexity of the installation, excavation requirements, yard accessibility, utility locations, soil conditions, and the amount of grading, drainage, or retaining work required.

Pool installation contractors are the professionals most commonly hired for semi-inground pool projects. They coordinate excavation, pool assembly, plumbing, electrical work, backfilling, and finishing to ensure the pool is installed safely and complies with local building requirements. In Portland, OR, where frequent rainfall, clay-rich soils, sloped lots, and high groundwater in some areas can complicate installations, experienced pool builders can recommend proper drainage systems, stable foundation preparation, and materials suited to the Pacific Northwest climate.

Additional Pros to Consider Hiring

Depending on the scope of your project, you may need to hire additional professionals to complete the installation or enhance your backyard.

• Electricians may be needed to install dedicated circuits, pool lighting, pumps, heaters, automation systems, or GFCI-protected outlets. Licensed electricians in the Portland, OR, area charge $90 to $170 per hour.

• Excavation and grading contractors may be required if the site needs significant earthmoving, retaining walls, drainage improvements, or leveling before installation. These professionals charge $85 to $180 per hour, depending on soil conditions and project complexity.

Permits

Most semi-inground pool installations in Portland, OR, require permits, particularly when excavation, electrical work, plumbing, or permanent structures such as decks or fencing are included. Permit costs range from $175 to $400, with additional inspection fees that may be required to verify compliance with local building, electrical, and safety codes.

Permit requirements vary with the pool's size and the project's scope, so homeowners should consult their pool builder before work begins. Experienced local pool installers are familiar with the area’s permitting requirements and can obtain the necessary permits, schedule inspections, and help ensure the installation complies with all applicable local regulations.

Does a Semi-Inground Pool Increase Home Value?

In Portland, OR, installing a semi-inground pool can increase your home's appeal and add value, particularly in neighborhoods where well-designed outdoor living spaces are highly desirable. A semi-inground pool provides a return on investment (ROI) of 30% to 50%, as it can make a property more attractive to buyers seeking a move-in-ready backyard for recreation, relaxation, and entertaining.

A professionally installed semi-inground pool enhances curb appeal, expands usable outdoor living space, and creates an attractive focal point for the backyard. Features such as surrounding decking, landscaping, outdoor lighting, patios, and safety fencing can further improve the pool's appearance and functionality. Although the local swimming season is shorter than in warmer climates, the region's emphasis on outdoor living and thoughtfully landscaped yards means a well-maintained semi-inground pool can still be a desirable amenity. It can help a home stand out in the local real estate market while providing homeowners with an inviting space to enjoy during the warmer months.

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.

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