Pond rebuilds and renovations for features that never worked right
Inherited a pond with the house? Built one that never quite worked? Renovation keeps what's sound and fixes what was missing, usually filtration, depth and access.
Common renovation scopes
- Add bottom drains and gravity-fed filtration to a skimmer-only pond
- Deepen and reshape for koi; remove shelves that harbor algae and predators
- Replace failed liners or reseal concrete shells
- Rebuild waterfalls and streams that leak or splash out
- Convert a pond to pondless, or a pool to a natural swimming pond
- Upgrade pumps to variable-speed, add UV, aeration and auto-fill
Commercial reconstruction
HOA lakes, hotel display ponds and office-park water features built in the 80s and 90s are hitting end of life. We rebuild them in phases so the property stays presentable, with fish and plants held on-site.
Signs you need renovation help
- The pond is under 3 ft deep and the koi are outgrowing it
- There's a skimmer but no bottom drain, and sludge builds every year
- The liner has been patched more than twice
- The waterfall leaks or splashes and the pump runs constantly
- The feature was inherited with the house and nobody knows how it works
What drives the cost
Renovation usually lands at 40–60% of a new build when the location and shell are sound. Filtration retrofits and deepening are the big line items; liner replacement, waterfall rebuilds and electrical upgrades are priced per scope. Commercial reconstructions are quoted in phases.
What this service covers
Pond renovation & reconstruction sits under the wider heading of water feature construction. Clients tend to call it pond reconstruction or pond remodel; whatever the name, the work breaks down into a few distinct jobs:
Filtration retrofits
Bottom drains, settlement chambers, bead or moving-bed biofilters and UV added to ponds built without them.
Deepening and reshaping
Removing algae-prone shelves and taking a shallow pond to koi depth within the existing footprint.
Liner replacement
New EPDM or polyurea over the existing shell with all penetrations re-flanged.
Waterfall and stream rebuilds
Leaking or splashing falls rebuilt with proper weirs, liner terminations and rock setting.
Pond-to-pondless conversions
Fish rehomed, basin rebuilt in the existing footprint, falls reused.
Pool-to-natural-pond conversions
Unused pools converted to planted natural ponds or koi ponds with new filtration.
Commercial feature reconstruction
Phased rebuilds of aging HOA, hotel and campus features with fish and plants held on-site.
Terms you'll hear from our technicians on this work: bottom drain retrofit, variable-speed pump, UV clarifier, aeration, auto-fill, shell integrity, phased construction, fish holding.
Where we offer it
Routed service through Orange County, Los Angeles, San Diego County, the Inland Empire and the Coachella Valley, with construction and commercial crews traveling to Arizona.
Pond Renovation & Reconstruction across Southern California and Arizona
Orange County home base, routed crews from Los Angeles to San Diego and the desert. One call, one crew, written findings.
Before and after: renovation calls
Customer story
What a rebuild looks like from the owner's side
“Wes and his crew are fantastic. They've been out a couple of times to make it the best possible scenario for everyone. I try to do it as naturally as possible, without chemicals. The bio-filter with the UV light helps immensely. Once a week I back-flush and we're good to go. Clean water. Everybody loves it. The turtles love it.”
Homeowner
A homeowner on her rebuilt turtle and koi pond: Koi Pros added a bio-filter with UV so the water stays clear without chemicals, and the monthly maintenance that used to overwhelm her is now a once-a-week back-flush.
Watch: a waterfall and pond repair and reseal in Orange County
A leaking community stream and waterfall, start to finish: drain and vacuum, grind and patch the cracks, spray the sealer, refill, and the waterfall running again. About two minutes. This is the same crew that handles renovation.
Guides on renovation
Repair · 4 min
Pond Rebuilding & Fish Handling 101 – If You Rebuild Your Koi Pond You Need to Handle Your Fish Right?
Replacing a koi pond liner after 10+ years? Learn how to safely hold your fish and turtles, inspect plumbing,...
Maintenance · 31 min
Professional Pond Maintenance: How It Really Works
Confused why algae, fish stress, or equipment issues keep returning? Learn how professional pond maintenance...
Maintenance · 24 min
Annual Pond Maintenance Calendar for California Ponds
Annual pond maintenance calendar for California's year-round climate. Monthly tasks covering water chemistry,...
Questions about renovation
Is it cheaper to renovate or rebuild?
If the shell and location are sound, renovation is usually 40–60% of a new build. If the pond is too shallow, poorly sited or the shell has failed, a rebuild is often the better long-term spend. The assessment tells us which.