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

The cost to install a semi-inground pool in Boston, MA, averages $12,996, with most homeowners paying between $7,581 and $21,660 on typical projects. Prices in this market run at the higher end of the national range, since Massachusetts carries one of the highest regional price levels in the country. The short pool season and tight urban lots in Boston, MA, neighborhoods also shape how contractors approach a semi-inground build here.

Semi-Inground Pool Cost Factors 

Semi-inground pool costs in Boston, MA, are driven primarily by pool sizes and material choices. Sloped or ledge-heavy yards common in the Greater Boston area also add to excavation costs.

Size

Whether you opt for an in-ground or above-ground pool, larger pools cost more. For semi-inground pools, prices range from $7,800 for a 10-foot-diameter pool to $27,900 for a 24-foot-diameter pool. Standard pools in prefabricated shapes will cost less than those with custom measurements. Many homeowners on smaller urban lots opt for compact 10- to 16-foot pools to fit tight backyard footprints.

Here’s how your semi-inground pool cost will vary based on size:

Materials

The material used for your semi-inground pool will impact the cost, ranging from an average of $3,300 for steel to $24,600 for concrete. Fiberglass and vinyl liner pool types are popular in Boston, MA, because they generally tolerate New England's seasonal ground movement better than rigid concrete structures.

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

Frost-Line Footings 

Massachusetts building code sets the frost line at 48 inches below grade, one of the deepest requirements in the country. Footings and frost-sensitive plumbing components must be protected from freezing, often requiring installation below the local frost depth or other approved methods. This deeper excavation typically adds $1,000 to $3,000 compared to warmer climates, and it's non-negotiable for a durable installation. 

Wetlands and Zoning Review 

Massachusetts' Wetlands Protection Act gives local Conservation Commissions jurisdiction over any excavation within 100 feet of a pond, stream, or other wetland resource area, or within 200 feet of a perennial river. Properties within these regulated buffer zones may require a Request for Determination of Applicability or a more involved Notice of Intent. Factor in a few extra weeks of lead time and additional filing fees on affected lots. Before finalizing your footprint, review what to consider when putting in a pool on a wetlands-adjacent property.

Pool Pro Costs

Hiring an experienced pool contractor in Boston, MA, covers excavation below the frost line, licensed plumbing and electrical work, and any required Conservation Commission filings.

Labor

Pool builders in Boston, MA, charge $55 to $150 per hour, and licensed plumbers or electricians brought on for pool-related trade work often bill $100 to $160 per hour in this market. Labor represents roughly 25% to 50% of total project cost, which works out to about $3,300 to $6,700 in combined labor for a typical semi-inground project.

Permits and Inspections

A typical semi-inground pool installation project in Boston, MA, runs $150 to $300 in city permit fees alone. Additional electrical and plumbing permits may be required, each carrying its own permit fee and inspection process.

Additional Pros to Consider Hiring 

Beyond the core installer, local homeowners commonly hire a wetlands consultant for properties near protected areas, a mason for retaining walls on sloped lots, and a licensed electrician for GFCI-protected pool circuits required under Massachusetts code.

Does a Semi-Inground Pool Increase Home Value?

Pool-related upgrades in Boston, MA, can deliver a 40% to 60% return on investment (ROI), similar to other outdoor living improvements. Full new pool installations tend to land toward the lower end of that range, since the short outdoor swimming season limits how much value a pool adds compared to warm-climate markets. That's a meaningful contrast with places like Florida, where near-year-round use pushes pool ROI higher.

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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