Gunite vs. Fiberglass Pools on Long Island: Which Is Right for You?
It's the question every Long Island homeowner asks when they start planning a pool: gunite or fiberglass? Both are popular, both can look stunning, and both will give you years of enjoyment — but they are fundamentally different products with different costs, timelines, and long-term considerations. Here's what you actually need to know.
The Short Answer
If you want a fully custom shape, a spa, a beach entry, or a pool that integrates seamlessly with a luxury landscape design, gunite is almost always the right choice for Long Island homeowners. If you want the fastest installation, the lowest upfront cost, and you're happy with a standard shape, fiberglass is a solid option.
That said, the decision is more nuanced than that — and the Long Island climate, soil conditions, and typical project scope all factor in. Let's break it down properly.
What Is a Gunite Pool?
Gunite (also called shotcrete) pools are built on-site by spraying a mixture of concrete and sand over a steel rebar framework. The shell is formed in your backyard, which means it can be any shape, any depth, and any size you want. Once the shell cures, it's finished with plaster, pebble, quartz, or tile.
Gunite pools are the standard for luxury residential pools on Long Island. When you see a pool with a vanishing edge, a tanning ledge, an integrated spa, a beach entry, or a complex freeform shape — that's almost always gunite. The material allows for complete design freedom, which is why it's the choice for high-end projects in communities like Sands Point, Brookville, Dix Hills, and the Hamptons.
What Is a Fiberglass Pool?
Fiberglass pools are manufactured off-site as a single-piece shell, then delivered to your property by truck and lowered into the excavated hole by crane. The shell is pre-finished with a smooth gel coat surface that doesn't require replastering.
Because the shell is pre-made, you're limited to the shapes and sizes the manufacturer offers — typically rectangular, kidney, or oval designs up to about 16 feet wide (limited by what can be transported on a truck). Fiberglass pools install faster than gunite — typically 2–4 weeks versus 3–6 months for gunite — and the smooth surface is gentler on feet and easier to keep clean.
Gunite vs. Fiberglass: Side-by-Side Comparison
| Factor | Gunite | Fiberglass |
|---|---|---|
| Upfront Cost | $80,000–$200,000+ | $45,000–$85,000 |
| Installation Time | 3–6 months | 2–4 weeks |
| Design Flexibility | Unlimited shapes & sizes | Limited to manufacturer molds |
| Surface Feel | Plaster/pebble (rougher) | Smooth gel coat |
| Resurfacing | Every 10–15 years | Not required (gel coat lasts 25+ yrs) |
| Algae Resistance | More porous, more maintenance | Non-porous, easier to maintain |
| Lifespan | 50+ years with maintenance | 25–30 years |
| Spa Integration | Seamless, any shape | Limited pre-made options |
| Long Island Soil | Excellent — custom engineered | Good — but width limited |
| Resale Value | Higher — luxury perception | Moderate |
Cost Breakdown for Long Island
Long Island pool costs are higher than national averages due to labor costs, permit requirements, and the complexity of working in established residential neighborhoods. Here's what you can realistically expect:
Gunite Pool (Long Island)
- • Basic rectangular: $80,000–$110,000
- • Custom freeform with spa: $120,000–$160,000
- • Luxury estate pool: $160,000–$250,000+
- • Includes: excavation, steel, gunite, plaster, equipment, coping, basic decking
Fiberglass Pool (Long Island)
- • Standard 12×24 shell: $45,000–$65,000
- • Larger 16×32 shell: $65,000–$85,000
- • With patio and landscaping: add $30,000–$60,000
- • Includes: shell, excavation, equipment, basic coping
Keep in mind that the pool shell is only part of the project. Patio, landscaping, fencing, lighting, and outdoor living features typically add 30–60% to the base pool cost — and these additions look significantly better with a gunite pool because the design can be fully integrated from the start.
Long Island-Specific Considerations
A few factors specific to Long Island affect the gunite vs. fiberglass decision:
Soil and Water Table
Long Island has a high water table in many areas, particularly in Nassau County and along the South Shore. Fiberglass pools can "float" or pop out of the ground if the water table rises and the pool is drained — a real risk during off-season maintenance. Gunite pools are heavier and less susceptible to this issue. Your contractor should assess your specific site before recommending a pool type.
Permit Requirements
Nassau and Suffolk County both require building permits for in-ground pools. The permitting process is the same for both pool types and typically takes 4–8 weeks. Factor this into your timeline regardless of which type you choose.
Neighborhood Aesthetics
In the luxury communities of Long Island's North Shore and the Hamptons, gunite pools are the standard. A fiberglass pool in a neighborhood of custom gunite pools may affect resale value perception, even if the pool itself is perfectly functional.
Access and Delivery
Fiberglass shells are delivered by truck and require crane access to your property. If your backyard has limited access — a narrow gate, mature trees, or a tight lot — fiberglass installation may be complicated or impossible. Gunite is built on-site and doesn't have this limitation.
Pros and Cons Summary
Gunite
Fiberglass
Our Recommendation for Long Island Homeowners
At Cardi Design & Build, we specialize in gunite pool construction because it gives our clients the design freedom to create something truly unique — a pool that fits their property, their lifestyle, and their vision rather than a manufacturer's catalog. The vast majority of our projects involve custom shapes, integrated spas, tanning ledges, and seamless transitions to bluestone patios and landscape design.
That said, we always give clients an honest assessment. If your budget is under $70,000, your lot has access limitations, or you need the pool ready for a specific summer, fiberglass may be the practical choice. We'd rather help you make the right decision than oversell you on a project that doesn't fit your situation.
The best way to decide is to have a conversation about your specific property, your goals, and your timeline. We offer free estimates and can walk you through both options with real numbers for your project.
Ready to Plan Your Long Island Pool?
Get a free estimate from Cardi Design & Build. We'll assess your property, discuss your options, and give you honest pricing for both gunite and fiberglass so you can make the right choice.