New ponds · Southern California
Custom Koi Pond Construction
The Pond Pros are koi pond builders and licensed C-27 contractors who have designed and built more than 2,000 ponds across Southern California since 2005. From a small backyard koi pond to a 30x20' pond with a custom dock, we design it, dig it, build it and bring it to life — with a free quote and drawing before you commit to anything.
What goes into a Pond Pros koi pond
Design and drawing
Dennis walks the yard with you, listens to what you want, and draws the pond — free, with good, better and best options for your budget.
Excavation and shaping
Depth for the fish, shelves for the plants, and a shape that fits the yard instead of fighting it.
Liner and rockwork
Heavy liner, underlayment, and the natural stone work Dennis is known for, so the edges disappear and the pond looks like it was always there.
Filtration and circulation sized for koi
Bottom drains, skimmers, biological filtration and pumps sized for the water volume and the fish load, not the cheapest kit.
Waterfalls and streams
Nearly every pond we build has one. See our waterfall page for pondless options too.
Startup and fish
We start the system, balance the water and tell you exactly when and how to add your koi.
How a build goes
- You call or message us, and we set up a visit.
- Dennis designs the pond with you and gives you a free quote and drawing with three options.
- We schedule the build. We're normally 2-3 weeks out from every new project, so call fast.
- Most ponds take about 1-2 weeks on site, depending on size.
- We start the system and walk you through cycling the pond — about 4-6 weeks — before the koi go in.
Serving the Inland Empire, San Gabriel Valley, Orange County and Los Angeles — including La Verne, Claremont, Upland, Ontario, Glendora, Jurupa Valley, Riverside, Colton, Fontana and Chino.
HOW IT WORKS
What happens when you call
Free quote and drawing
A real design, not a guess, with pricing for three levels of finish.
Built by the people who designed it
Dennis and his crew do the work; nothing is subbed out to someone who's never seen the drawing.
Licensed C-27 contractors
License #854842. Licensed and accountable, so you know who's responsible.
Recent work
See the full gallery
Dennis and his team surpassed our expectations! Gave us the best quote out of 3 company's and finished within the time frame he gave us. Oh and the pond looks amazing!
Questions we hear about koi pond construction
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