Elevate Your Space

Koi Market designs and builds koi ponds and water features that look like they were always there — then keeps them that way, season after season, with our own crew.

Request a Design Consultation

Recent Work

Portfolio

Every project below was designed, dug, plumbed and planted by our own crew.

Pond Maintenance

Oyster Bay Annual Care

Year-round plan · Fortnightly service · 6th season

Filteration & Repair

Syosset Filteration Overhaul

Failing bio-filter replaced · Clear in 9 days

Pondless Water Features

Cold Spring harbor Waterfall

Pondless basin · Zero standing water · 3 weeks

Three dark woven spherical fountain planters with water cascading over rocks in a landscaped garden pond setting.

Pond Construction

The Dix Hills Sanctuary

4,200 gallons · Bottom drain & skimmer · 11 weeks

One Crew, One Point of Contact

Building, Maintaining, & Growing Your Pond

From the first dig to the winter close-down. Every line below is run by the same team that keeps our own 10,000-koi facility alive.

Build

A pond that did not exist yesterday, dug and plumbed by our own crew.

Pond Construction

Full design and build, from excavation and plumbing to filtration, rockwork and planting.

Explore

Pond Construction

Create a pond that feels like a natural extension of your property. Our team handles design, excavation, plumbing, filtration, rockwork and planting. Every detail brings together beautiful surroundings and a healthy environment for your koi.

Pondless Water Features

The sound and movement of water with no standing depth — ideal where children play.

Explore

Pondless Water Features

Bring the sound and movement of flowing water to your landscape without an open pond. We design waterfalls and streams that recirculate through a concealed reservoir. Enjoy a beautiful focal point with less upkeep than a traditional pond.

Pond Enhancements

Spillways, streams, bridges and seating added to a pond you already love.

Explore

Pond Enhancements

Give the pond you already love something new. Add a waterfall, stream, bridge or seating area that draws you closer to the water. We design each enhancement to complement your landscape and work with your existing pond.

Pond Lighting

Submerged and landscape LED, zoned so the pond reads properly after dark.

Explore

Pond Lighting

Enjoy a different view of your pond after sunset. Submerged and landscape lighting highlight moving water, rockwork and the spaces around your pond. Thoughtful placement creates a warm evening atmosphere and brings your favorite features into focus.

Maintain

The visits that keep water, filtration and fish where they belong.

Pond Maintenance

Scheduled visits that keep water parameters, filtration and fish health where they belong.

Explore

Pond Maintenance

Spend more time enjoying your pond with consistent care from our team. We monitor water quality, service filtration and keep an eye on fish health during scheduled visits. Regular attention helps catch small issues before they become bigger problems.

Annual Maintenance Plans

One agreement covering every visit, opening and close-down for the year.

Explore

Annual Maintenance Plans

Keep your pond’s care organized with one plan for the year. We coordinate spring opening, scheduled maintenance and winterization around your pond’s needs. A predictable schedule makes it easier to enjoy your pond through every season.

Pond Cleaning

Full drain-downs, muck removal and pressure washing, with the fish safely held.

Explore

Pond Cleaning

Refresh your pond with a thorough cleaning that tackles accumulated muck and debris. When a full drain-down is needed, we safely hold your fish while cleaning the pond and servicing equipment. We then refill the system and prepare it for their return.

Pond Repair

Leaks traced and fixed, liners patched, pumps and failing filtration replaced.

Explore

Pond Repair

Get to the source of leaks, weak water flow and equipment problems. Our team diagnoses issues with liners, plumbing, pumps and filtration before recommending repairs. We focus on restoring dependable performance and addressing the underlying cause.

Seasonal

Long Island runs to a calendar, and so does the pond.

Spring Opening

Restart, clean and rebalance the system so the season begins on stable water.

Explore

Spring Opening

Give your pond a fresh start after winter. We clean seasonal debris, restart equipment and check filtration and water conditions. Your pond gets the attention it needs as temperatures rise and your fish become more active.

Winterization

Close down safely — aeration set, nets fitted and equipment protected from the freeze.

Explore

Winterization

Prepare your pond and fish for Long Island’s colder months. We manage seasonal shutdown, configure aeration and protect equipment based on your system’s needs. Proper winter preparation helps reduce freeze damage and supports fish health.

Aquatic Plants

Planting schemes that shade, filter and finish the pond without taking it over.

Explore

Aquatic Plants

Add color, texture and seasonal interest with plants chosen for your pond. The right mix provides shade, absorbs nutrients and complements your fish and surrounding landscape. We help select and place varieties that suit your space and stay manageable.

Not sure which line you need?

Describe the pond and we will tell you — no charge, no obligation.

Ask the Crew

Not Sure Which Service You Need?

Tell us what’s happening with your pond and what you’d like to improve. Our team will help identify the right service and explain the next steps. There’s no charge for that initial guidance and no obligation to move forward.

 Ask the Crew

How a Koi Market Build Runs

The Signature Process

Five stages, one crew, and a quote that holds from the day you sign it.

01

Discovery

We walk the space with you — grades, sight lines, sun, drainage and how you actually want to use the garden. Free at our Dix Hills facility, $500 on site.

A written brief

02

Design & Fixed Quote

Layout, depth, filtration spec and planting, priced as one fixed number. No allowances that quietly grow once the digging starts.

Drawings & a price that holds

03

Excavation & Build

Our own crew digs, plumbs and sets every stone. No subcontractors, and one site lead you can reach directly for the whole build.

One named site lead

04

Filtration & Planting

The system is commissioned, cycled and balanced before a single koi goes in — the step most builders skip and every fish pays for.

Cycled, stable water

05

Handover & Care Plan

You are shown how the system runs, given written parameters to watch, and offered an annual plan so you never have to think about it again.

Written parameters & a plan

Most builds run eleven to fourteen weeks from the first walk-through to handover.

Start at Step One

We stopped going away at weekends. The whole family ends up out by the pond — it turned the least used part of the garden into the only part anyone wants to sit in.

The Marchetti family

4,200-gallon build · Dix Hills, NY

Featured Project

The Dix Hills Sanctuary

A steep, unusable side yard with a drainage problem, turned into a 4,200-gallon koi pond that runs itself.

Before
After

Dix Hills, NY

Completed 2020

Full build

4,200

Gallons

11

Weeks on site

6 ft

Deepest point

24

Koi rehomed

The problem. A three-foot grade change funnelled every storm into the neighbour’s lawn, and the space was written off as unusable.

The design. We used the grade instead of fighting it — a raised header pool feeding a stream into the main body, with the run-off routed through the filtration.

The system. Bottom drain, skimmer, sieve and moving-bed bio-filter, sized a full stage above the volume so it never runs at its limit.

The result. Six seasons in, on a fortnightly plan, with zero winter losses and the original 24 koi still in it.

Start a Project Like This

Named Clients, Real Projects

What Owners Say a Season Later

Start Your Project

Request a Consultation

Tell us about your space and budget, and we’ll take it from there.

  1. You send the briefSpace, budget and what you have in mind.
  2. We consultAt our Dix Hills facility, or on site at your home.
  3. Design & fixed quoteLayout, filtration spec and a price that holds.
  4. Our crew builds itOne team start to finish — no subcontractors.
At our facility
Free
On-site consultation
$500
Prefer to talk it through?
(516) 809-6771 WhatsApp

Your details

* Required

Paying For It

Payment Plans & Annual Care

A pond is a capital project and then a running one. Both can be spread.

Staged Build Payments

Larger builds are invoiced against milestones — deposit, excavation, filtration commissioning and handover — rather than as one lump sum up front.

Annual Care Plans

Every visit, the spring opening and the winter close-down bundled into one agreement, billed monthly instead of visit by visit.

Third-Party Financing

Where a project suits it, we can point you at outside home-improvement finance and work to whatever schedule that sets.

Terms are set per project and confirmed in writing with your fixed quote — nothing here is an offer of credit.