Semi-Inground Pools in Massachusetts

New England’s Pioneer in Rectangular On-Ground Pool Installation

Gibraltar Pools has been building pools for more than 40 years, spanning three generations of family ownership. We pioneered the rectangular on-ground swimming pool in New England, hold the number one market position in the region, and have installed over 7,000 pools throughout the area. Our pools are backed by six U.S. Government patents and have earned design recognition from the pool and spa industry’s leading trade association. It’s the only on-ground pool in New England with that combination of credentials. If there isn’t already a Gibraltar Pool™ in your neighborhood, there probably may be.

Our semi-inground pools deliver the clean rectangular lines homeowners want without the excavation, extended permitting delays, and months-long construction timelines that come with traditional inground builds. Most installations are completed in a single day.

Ready to see what’s possible in your backyard? Call Gibraltar Pools at (978) 759-4445 to schedule your free, no-obligation backyard survey.

Why Local Homeowners Choose Semi-Inground Pools 

• More Affordable Than In-Ground: Skip the gunite costs and weeks of excavation without sacrificing the rectangular design you want.
• One-Day Installation: Most Gibraltar Pools are completed in a single day, so your yard isn’t a construction site all summer.
• Superior Filtration: Our dual filtration system filters twice the water at twice the rate of ordinary pools, cutting electrical operation times in half.
• Built for New England: Engineered for rocky soil, sloped yards, and seasonal temperature swings. 
• Flexible Configuration: Can be set fully above ground or semi-inground based on what your specific site requires.

Swimming Pools Built for Massachusetts Properties

Massachusetts backyards don’t follow a template. Homes on the Cape deal with sandy soil and salt air. Suburban lots around Boston and Worcester often come with tight setbacks and grading challenges. Properties in Western Massachusetts bring rocky terrain and multi-level layouts that would stop a standard excavation crew. Our factory-trained design team has worked in all of these conditions, and they’re trained to work with the landscape rather than against it.

Every project starts with a free, no-obligation backyard survey. A team member comes to your home, evaluates grading, soil conditions, yard size, and drainage, then walks you through every design option and configuration that fits your site. The survey also covers budget, timeline, and local permitting requirements at no cost and with no pressure to buy. Because installation can be configured fully above ground or semi-inground, we can find a solution for sites that would be difficult or cost-prohibitive for a traditional inground builder.

Premium Features Included With Every Gibraltar Pool™

When you choose Gibraltar Pools for pool installation in Massachusetts, every pool comes equipped with proprietary features that no other on-ground pool manufacturer can replicate. They’re backed by six U.S. Government patents.

Gibraltar Safety View™ Liner

The Gibraltar Safety View™ liner is built from 22-mil winterized virgin vinyl using a patented custom liner-fit system that can support longer liner life than standard liners. The enhanced underwater visibility it provides makes it easier to monitor swimmers from the pool deck. It’s a safety benefit not found on ordinary pool liners. It also gives the water a crisp, clear appearance that standard liners simply don’t match.

Alum-A-Clad™ Patio Decking System

The proprietary Alum-A-Clad™ aluminum patio decking wraps all four sides of the pool, creating a finished, integrated surround from day one. No separate wooden deck to design, build, and maintain. No contractor to coordinate. This is a standard inclusion that no other on-ground pool brand bundles this way, and it’s one of the reasons a Gibraltar Pool™ looks complete the day it’s installed.

Durable Pool Walls

Every piece of metal that can be touched on a Gibraltar Pool™ is finished. No rough edges, no sharp corners, anywhere. This isn’t common practice in the industry. It’s an engineering decision that reflects how the pool is designed to be used by real families over decades. Combined with construction engineered for New England winters and seasonal temperature extremes, these walls are built to last.

Advanced Filtration System

Gibraltar’s dual filtration system filters twice the water at twice the rate of ordinary swimming pools. That performance cuts electrical operation times in half, reducing both energy consumption and the time you spend managing water chemistry. It’s a meaningful operational difference that compounds over years of ownership.

Walk-Up Staircase With Railings

Each Gibraltar Pool™ includes a built-in walk-up staircase with secure railings as a standard feature. Safe, stable entry and exit matter for families with children, older adults, or anyone who prefers a more confident alternative to traditional pool ladders.

What to Expect From Our Installation Process

• A Detailed Backyard Assessment: Everything begins with a complimentary on-site evaluation. We assess your yard, discuss your goals, and determine whether a fully above-ground or semi-inground configuration is best suited for your property. We also review budget considerations, timelines, and any local permitting requirements related to pool installation in Massachusetts.
• Design and Planning: Once the assessment is complete, we move into the design phase. This includes finalizing pool size, placement, configuration, and feature selections. A dedicated project manager is assigned to your project at this stage and stays available throughout the entire process. Nothing we do is a mystery.
• Professional Installation: Our experienced pool installers handle the construction process with precision and care. Because semi-inground pools are typically less invasive than traditional inground builds, installation is often completed in a day.
• Pool School and Final Walkthrough: After installation, we walk you through operation, maintenance, and safety features in a complimentary “pool school” session. You’ll leave knowing exactly how to care for your pool and feeling confident from day one.

A Long-Term Partner, Not Just an Installer

Buying a pool is a long-term decision, and we take that seriously. Every Gibraltar Pool™ is protected by the strongest manufacturer’s warranties in the swimming pool industry, covering defective materials and workmanship. Our relationship with customers doesn’t end at installation. Pools we built in the company’s early years are still in use today, and those homeowners are still part of the Gibraltar Pools family.

Our repair and maintenance services cover the full range of what a pool owner needs: openings and closings, pump and motor repairs, heater service, salt system maintenance, leak repair, and water chemistry for all makes and models of pool equipment. Our knowledgeable office staff can answer questions about water chemistry and maintenance directly, without requiring you to schedule anything online. And for homeowners thinking about budget, we offer creative financing options with low monthly payments for qualifying customers.

Our showroom on Route One in Topsfield, MA, houses the region’s largest display of semi-inground pools, spas, and saunas. It’s worth seeing in person before you decide.

Contact Gibraltar Pools for Semi-Inground Pool Installation in Massachusetts

Schedule your free backyard assessment and let a factory-trained team member show you exactly what’s possible on your property. Whether you live near Boston, Worcester, Springfield, Cape Cod, the North Shore, the South Shore, or anywhere in Western Massachusetts, Gibraltar Pools is ready to help you transform your backyard.

• Address: 435 Boston Street, Topsfield, MA 01983
• Phone: (978) 759-4445
• Hours: Monday–Wednesday: 9:00 AM – 6:00 PM | Thursday & Friday: 9:00 AM – 8:00 PM | Saturday & Sunday: 9:00 AM – 5:00 PM