A Backyard Oasis
FFP designed and built this koi pond and dual waterfalls, integrating custom stonework, a pergola, patios, planting, and lighting into one outdoor living space.
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Custom Pond Construction Services
Transform your outdoor space with premier pond construction and installation in NJ, PA, & TN. Enjoy custom designs and quality craftsmanship for lasting beauty.
Services We Offer: Pond Construction
Fitz's Fish Ponds builds custom koi ponds, water gardens, and water features across New Jersey, Pennsylvania, and Tennessee. Koi pond construction involves designing the pond around fish health — proper depth, filtration, and aeration — then excavating, installing the liner and equipment, and setting up a balanced ecosystem. Since 2008 we've completed thousands of builds, from compact backyard koi ponds to large custom installations, each delivered through our five-step consultation-to-walkthrough process.
Over 15 Years of Pond Construction Expertise
Since 2008, we've been creating stunning custom ponds across the East Coast, transforming landscapes into natural sanctuaries. Looking for a koi pond builder near you in New Jersey, New York, Pennsylvania, or Tennessee? We design and build dedicated koi ponds at least three feet deep, and deeper in colder NJ, NY, PA, and TN climates so koi overwinter safely in sizes from a few hundred gallons up to a 150,000-gallon pond oasis.
Masterful Pond Construction: Your Dream Oasis Awaits
At Fitz's Fish Ponds, we take pride in our Pond Construction Department, the very foundation of our business. With a rich history dating back to Fitz's teenage years, we've come a long way from building our first pond in his parents' backyard at the age of 13. Since then, our passion for creating stunning water features has driven us to become a leading choice as pond installation and construction experts, serving customers throughout the East Coast.
We build both dedicated koi pond construction and water garden construction, and during your free consultation we help you choose the right type for your goals, space, and budget.
Comprehensive, Full-Service Pond Solutions
- Custom Designs: Every pond is uniquely tailored to your property.
- Eco-Friendly Construction: Sustainable techniques for long-term health and beauty.
- Turnkey Pond Installation: From excavation to final touches, we handle every step.
- Ongoing Maintenance & Support: Keep your pond thriving with our expert pond maintenance and care services.
See our portfolio of completed projects! View Our Work
Our Pond Excavation and Construction Process
Step 1: Consultation & Pond Design
We begin with a free consultation to understand your vision, space, and goals. Our team of backyard pond construction specialists then crafts a custom pond design to fit your landscape perfectly.
Step 2: Site Preparation & Excavation
Our experts carefully excavate and prepare your site, ensuring a solid foundation for your water feature.
Step 3: Pond Installation & Customization
Using premium materials, our custom pond building contractors construct your pond with expert craftsmanship, adding elements like rock formations, waterfalls, and aquatic plants for a natural look.
Step 4: Water Quality & Ecosystem Setup
We incorporate filtration systems and aquatic life enhancements to ensure a healthy, sustainable pond environment.
Step 5: Final Touches & Customer Walkthrough
Before completion, we ensure every detail meets your expectations and provide maintenance tips to keep your pond pristine.
Want a pond that lasts a lifetime? Request a Consultation
Why choose Fitz's Fish Ponds?
FULL
SERVICE
We handle all aspects of your project
4.9
Average Google rating Over 600 reviews
5k+
Happy
Clients
We work
internationally
Featured Pond Construction Projects
The Boulder Beauty
FFP shaped this Princeton slope into a koi pond and boulder waterfall, coordinating stone stairs, retaining walls, patios, a pavilion, and landscape lighting.
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Pond, Patio & Pit in Freehold, NJ
FFP built a 4,500-gallon pond with dual waterfalls, then connected the Freehold landscape with stone patios, a custom fire bowl, planting, and an outdoor kitchen.
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The Blend: A Fishless Pond and Retaining Wall
FFP combined pond construction and landscape design to build a fishless entrance pond with multi-tier waterfalls, fiberglass lining, stone retaining walls, and lighting.
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Blending Beauty and Balance in Bethlehem, PA
FFP returned to this Bethlehem property to build a second pond and waterfall, incorporating retaining walls, stone steps, and a sitting area into the landscape.
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Formal Dedicated Koi Pond
FFP constructed this 10,000-gallon formal koi pond with fiberglass lining, limestone coping, a fountain, bottom drains, and automated filtration.
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A Koi Showcase
FFP built a formal koi pond with integrated filtration and a stone-veneered equipment house, coordinating retaining walls and an outdoor kitchen around the water feature.
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Custom Koi Pond & Water Feature in Virginia
FFP coordinated this Virginia pond with new-home construction, combining a 32-foot water channel, bubbling boulders, concealed filtration, and a separate stream system.
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Inside the Sasha and Gary Vee Pond Build
FFP assembled an experienced build team with Atlantic-Oase to reconstruct this large recreation pond, coordinating excavation, liner installation, filtration, and massive boulder placement.
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FFP Revamps Peddler’s Village’s Beloved Pond
FFP deepened the Peddler’s Village pond, reinforced its walls, added a waterfall, and upgraded undergravel filtration, UV clarification, and surface skimming.
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Taking Care of Our Customers
FFP built the Sioss family’s North Carolina pond and waterfall, returned to add a pergola and planting beds, and later repaired a leak as part of continued customer support.
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Magnificent Property Makeover in Manalapan, NJ
FFP built a 5,000-gallon pond and patio, installed filtration, planting, and lighting, and continues to support the Manalapan property with pond maintenance and seasonal netting.
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A 150,000-Gallon Pond Oasis in Pennsylvania
FFP constructed a 150,000-gallon hillside pond with a 250-foot stream, multiple waterfall pools, and extensive planting, demonstrating large-scale water feature construction.
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The FFP Barn Renovation
FFP renovated its headquarters with a glass-front koi pond, waterfall garden, pergola, stone patio, and outdoor kitchen, bringing pond systems and hardscape construction together.
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Transforming a Landscape into a Koi Haven in NJ
FFP constructed this Howell koi pond with a dedicated filtration shed, custom stone walls, lighting, and water features integrated into the surrounding landscape.
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Custom Hexagon-Shaped Formal Pond in New Hope, PA
FFP built this hexagonal showroom pond with fiberglass construction, gel-coat finishes, stone veneer, and integrated filtration, showcasing custom formal pond capabilities.
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FFP Wins ICF Magazine Builders Award for Specialty Applications
FFP built six large koi tanks in its Milford greenhouse using insulated concrete forms to support temperature control, demonstrating specialized aquatic construction expertise.
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FFP Wins NJNLA Landscape Excellence Award
FFP’s Kinnelon project combines a fishless entrance pond, tiered waterfalls, stone retaining walls, planting, and lighting, earning NJNLA recognition for landscape construction.
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Infinity Edge Formal Koi Pond
Explore Fitz's Fish Ponds' 35,000-gallon infinity edge koi pond in Warren, NJ, featuring a glass viewing window, waterfalls, and advanced filtration.
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A Natural Swim Pond in New Jersey Where Koi, Honey Bees & People Come Together
Explore a custom natural swimming pond in New Jersey featuring Japanese koi, massive boulders, water lilies, and a thriving backyard ecosystem.
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FREQUENTLY ASKED QUESTIONS
How much does it cost to build a custom pond?
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Koi pond cost depends on size, depth, filtration, and site conditions, so every build is quoted after a free consultation. Fitz's Fish Ponds builds everything from compact backyard koi ponds to large custom installations, and we provide a clear written proposal with timeline and costs before any work begins so there are no surprises.
How long does it take to build a pond?
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Build time varies with the size and complexity of the project. A straightforward backyard koi pond moves faster than a large multi-feature build with waterfalls and extensive stonework. After your consultation and design, Fitz's Fish Ponds provides a project timeline in the proposal so you know what to expect at each stage.
How deep should a koi pond be?
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For healthy koi, a dedicated koi pond should generally be at least three feet deep, and deeper in colder climates so fish can overwinter safely. Fitz's Fish Ponds designs each pond's depth around your koi, your climate across NJ, PA, and TN, and the look you want, balancing fish health with filtration and aesthetics.
Do you build ponds outside of New Jersey?
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Yes. Fitz's Fish Ponds builds and installs ponds across New Jersey, New York, Pennsylvania, and Tennessee, with retail locations in both regions. We have completed projects throughout the East Coast, so if you are outside our core service area, contact us and we can discuss your project and options.
What is the difference between a koi pond and a water garden?
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A dedicated koi pond is built around fish health, with greater depth, stronger filtration, and easy-to-clean surfaces. A water garden emphasizes plants and natural appearance and is usually shallower. Fitz's Fish Ponds builds both, and during your consultation we help you choose the right type for your goals, space, and budget.
Do you offer pond maintenance after construction?
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Yes. Beyond construction, Fitz's Fish Ponds offers ongoing maintenance, cleaning, and seasonal care to keep your pond healthy and clear. Many clients pair a new build with a maintenance plan so the water quality and equipment installed during construction are kept in top condition year-round.
What size pond can you build?
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Fitz's Fish Ponds builds ponds of nearly any scale, from compact backyard koi ponds to very large installations, including a 150,000-gallon pond oasis. Whatever the size, every project follows the same five-step process from consultation and design through construction, ecosystem setup, and a final walkthrough.
How do I get started?
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Getting started is simple. Book a free consultation with Fitz's Fish Ponds and our pond construction specialists will discuss your vision, space, and goals, then create a custom design. You will receive a proposal with the timeline and costs to review before construction begins. Contact us or call to schedule your consultation.
Proudly building and servicing ponds across NJ, NY, PA & TN — including Saddle River, Colts Neck, Mt Holly, Fairfield, and Green Brook, NJ; New Hope, PA; and Chattanooga and Franklin, TN.
