Willow 30
30 x 20 ft20,000 gal
Pool library / Hornwort 28
Oval natural swimming pool
Hornwort 28: a 28 x 17 ft swim pond
Concept rendering
What it costs to build
Likely cost in Utah for each way to build it, from doing all the work yourself to having it fully built for you. The designer reprices it for your state and your yard.
| Wild Builder | $52,000 to $72,900 | $60,800 |
| Guided Build | $57,600 to $79,200 | $66,700 |
| Partner Build | $123,600 to $158,600 | $138,700 |
| Turnkey Oasis | $139,400 to $179,900 | $156,900 |
How this pool works
Hornwort 28 pairs a 28 x 17 ft swimming zone with about 353 square feet of planted regeneration zone, roughly half the water surface. The swim zone is built as a sculpted gunite shell. A pump pulls water through a gravel and shale filter under the plants, where bacteria and roots strip out the nutrients algae would eat, then returns it clean over the babbling brook. No chlorine, no salt, and the water stays clear because something other than algae eats first.
Every number on this page comes from the same engine as the designer: the dig, liner, filter media, plumbing, pump, plants and finish work for this exact layout. Open it in the designer to fit it to your yard, or book a free 10-minute call to talk it through.
