In-Ground Pool Company in Harbor Isle, NY

Your Backyard Deserves Better Than Cookie-Cutter Pools

Custom gunite pools built by local in-ground pool builders in Suffolk County who understand Nassau County soil, permits, and what it takes to create a backyard you’ll actually use.

What our clients say

Bill S
Bill S
I highly recommend these guys. (Bob/Christian)They came right on time and were extremely neat and professional. They did a great job at a reasonable price.
Tommy Glenn
Tommy Glenn
I have been using Bobby and Sherwood for years. I highly recommend them. They did chimney repair and chimney sweep. Great work, great guys.
Ingrid V.
Ingrid V.
Highly recommend Ageless chimney. They were polite, professional and got the job done in one day, left my property as clean as they found it. Very happy!
Brian Nolin
Brian Nolin
Outstanding work, great service, and extremely reliable!!

Custom In-Ground Pools in Suffolk County

A Pool That Fits Your Property and Your Life

You’re not looking for the biggest pool on the block. You want something that makes sense for your yard, your family, and how you actually spend time outside.

That’s where custom in-ground pools in Nassau County come in. We’re talking about pools designed around your property’s grade, your existing landscaping, and what you’ll realistically maintain. Not a sales pitch for upgrades you don’t need.

The difference shows up in how the pool integrates with your patio, how water drains during storms, and whether your equipment is accessible or buried behind shrubs. These details matter more than tile color, and most companies skip right over them.

In-Ground Pool Builders in Harbor Isle

We've Been Building on Long Island Since 2006

We started in 2006 serving Nassau and Suffolk County homeowners. We’ve handled enough Harbor Isle projects to know what the local building departments expect, how the water table behaves, and which materials hold up through freeze-thaw cycles.

Every job is managed by an owner. That’s not marketing language—it’s how we operate. You’re not handed off to a crew that’s juggling five other sites.

We’re licensed, insured, and bonded in both counties. We pull permits, coordinate inspections, and handle the engineering requirements that trip up homeowners trying to navigate this process alone.

Suffolk County Pool Installation Process

Here's What Actually Happens During Installation

First, we assess your property. That means looking at grade, drainage, setbacks, and how a pool fits without creating problems you’ll regret later. We’re checking soil conditions and planning access for equipment before we talk about shape or depth.

Next comes permitting and engineering. In Nassau and Suffolk County, this isn’t optional. We handle the paperwork, coordinate with your town’s building department, and make sure everything is stamped and approved before excavation starts.

Then we dig, frame, and shoot the gunite. This is where you see the pool take shape. Plumbing, electrical, and structural work happen in sequence—not all at once. We’re building something that needs to last decades, not just pass inspection.

Finally, we finish the deck and surrounding masonry. Pool patio masonry in Suffolk County isn’t just about looks—it’s about drainage, frost heave, and creating a surface that doesn’t crack after two winters. We use materials that handle Long Island weather, and we grade everything so water moves away from your foundation.

Ready to get started?

Explore More Services

About Ageless Chimney

Complete Backyard Poolscapes in Nassau County

What's Included Beyond the Pool Itself

A pool is only part of the project. You also need coping, decking, and hardscape that ties everything together. That’s where our masonry background makes a difference.

We install custom pool coping and tile in Nassau County using materials like bluestone and natural stone that won’t crack under pressure or fade after a few seasons. Coping isn’t decorative—it’s the edge that takes the most abuse from water, chemicals, and temperature swings.

Concrete pool surrounds in Suffolk County need to handle drainage and freeze-thaw cycles. We slope everything correctly so water doesn’t pool near your house or create ice patches in winter. If your yard has elevation changes, we build pool retaining walls and handle grading so the finished space feels intentional, not like an afterthought.

You’re getting complete backyard poolscapes in Nassau County—not just a hole with water in it. That includes coordinating with landscapers, electricians, and anyone else involved so the project doesn’t stall because someone forgot to schedule the inspection.

How much does an in-ground pool cost in Harbor Isle, NY?

You’re looking at $65,000 to $90,000 for a standard gunite pool in Nassau County, but that number moves depending on size, depth, and site conditions. If your yard has poor access, steep grades, or requires retaining walls, expect to add $15,000 to $30,000.

Permits and engineering in Harbor Isle run between $2,000 and $4,500. That’s not optional, and it’s not something you can skip to save money. Towns like Oyster Bay and Hempstead have strict codes, and trying to cut corners creates bigger problems during inspection.

The real cost difference comes from materials and how the pool is built. Vinyl pools are cheaper upfront but require a $6,000 liner replacement every seven years. Gunite costs more initially but lasts decades without major repairs if it’s installed correctly. We’re not upselling you—we’re explaining what you’re actually paying for so you can make an informed decision.

Plan on 8 to 12 weeks from permit approval to finished pool. That timeline assumes normal weather, no surprises during excavation, and inspections that happen on schedule.

Permitting alone takes 3 to 6 weeks in Nassau and Suffolk County. You can’t start digging until the town approves your plans and you have an engineer’s stamp. Trying to rush this part or skip steps will shut your project down mid-construction.

Once we break ground, excavation and gunite take about two weeks. Plumbing, electrical, and tile work happen over the next four weeks. The final phase—decking, coping, and masonry—takes another two to three weeks depending on the size of your patio and any additional hardscape work. We’re not dragging the job out, but we’re also not cutting corners to hit an arbitrary deadline.

You need a building permit, an electrical permit, and often a separate permit for any retaining walls or significant grading. Each town has slightly different requirements, but none of them let you skip the engineering review.

Your pool design has to be stamped by a licensed engineer. That includes structural calculations, drainage plans, and setback measurements. The town reviews everything before issuing a permit, and they’ll inspect multiple times during construction.

If you’re in a flood zone or near wetlands, expect additional reviews from the county or state. We handle all of this as part of the project because most homeowners don’t have time to sit in the building department arguing about setback measurements. It’s not exciting, but it’s the difference between a pool that’s legal and one that creates problems when you try to sell your house.

Gunite is sprayed concrete reinforced with rebar. It’s permanent, fully customizable, and doesn’t need replacement parts every few years. Vinyl pools use a liner stretched over a frame—they’re cheaper upfront but cost more over time because that liner degrades.

In Nassau and Suffolk County, freeze-thaw cycles are brutal on vinyl. Water gets behind the liner, ice forms, and you end up with wrinkles, tears, or complete failure. A new liner costs $6,000 to $8,000 and needs replacement every 7 to 10 years. Gunite doesn’t have that problem.

Customization is the other big difference. Vinyl pools come in pre-formed shapes. Gunite lets you build whatever fits your yard—curved edges, beach entries, integrated spas. If your property has challenging grades or you want something that doesn’t look like every other pool in Harbor Isle, gunite is the only option that makes sense.

Yes, but not dollar-for-dollar. A well-designed pool adds appeal in Nassau County’s competitive market, especially if your neighborhood already has pools. Buyers expect them, and homes without pools sit longer.

The return depends on execution. A pool crammed into a small yard with no patio space doesn’t help. A thoughtfully designed backyard with integrated masonry, proper drainage, and a layout that makes sense—that’s what buyers notice. You’re not getting back every dollar you spend, but you’re making your home easier to sell.

The bigger value is in how you use the space while you own it. If a pool means your family spends more time outside, hosts more often, and enjoys your property instead of driving to the beach, that’s worth something. Just don’t expect it to appraise for the full construction cost when you sell.

Start by verifying their license with Nassau or Suffolk County consumer affairs. If they’re not licensed, walk away. Insurance and bonding matter too—you don’t want to be liable if someone gets hurt on your property during construction.

Ask how many pools they’ve built locally and whether they handle permitting in-house. Companies that subcontract the paperwork or don’t understand local codes create delays. You want someone who knows what the building inspector will flag before you pour concrete.

Check how they handle problems. Every project hits a snag—unexpected rock, drainage issues, weather delays. The question is whether they solve it or disappear. We’ve finished projects other companies abandoned because the builder didn’t know how to handle Suffolk County soil conditions. That’s not something you figure out halfway through a job.

Other Services we provide in Harbor Isle