Close-up of blue water with rippling reflections and light patterns on the surface.

Where backyard legends are built.

We don’t just dig holes and fill them with water. We build pools and outdoor spaces that would make the god of the sea nod in approval. No fluff. No sales pitch. Just local pros doing it right the first time.

Built right.
Built to last.

A backyard pool area under construction with a rectangular swimming pool, a hot tub, surrounding concrete patio, and green trees in the background.

Custom Pools

We build in-ground concrete pools from the dirt up — no fiberglass shells, no prefab junk. Just clean lines, tight finishes, and structure that holds. Our pools are built to look good and last, not just for the season, but for the long haul. If you’re looking for quick and cheap, call someone else. If you want it done right the first time, we’re your guys.

Construction workers installing a swimming pool in a backyard, with construction equipment and materials around.

Hardscapes

Concrete is where we started, and it shows. Patios, walkways, driveways, broom finish or stamped — we pour it solid, finish it clean, and make it last. We don’t leave cracks, weak edges, or lazy forms. Just flat, true work that ties your whole outdoor space together.

Front view of a white two-story house with a black roof, surrounded by a landscaped garden with bushes, trees, and a lawn.

Landscapes

Landscaping isn’t just mulch and flowers — it’s grading, drainage, and ground control. We fix slopes, lay sod, drop rock, and make sure your yard doesn’t flood every time it rains. We build it to look sharp, but more importantly, we make sure it works. Clean, low-maintenance, and done with purpose.

We don’t ask for reviews. We earn them.

“They actually showed up when they said they would. That alone puts them ahead of half the contractors around here. Pool looks incredible — clean lines, solid finish, zero drama.”
— Mike L., Glen Carbon, IL

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“Poseidon didn’t waste our time. They gave us a straight quote, explained what was realistic, and knocked it out of the park. Our patio and pool combo turned our backyard into the only place we want to be.”
— Stephanie R., Edwardsville, IL

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“The drainage in our yard was a mess before. These guys graded it out, laid sod, and built a retaining wall that actually holds. Everything looks tight and drains properly. First time in 10 years we haven’t had standing water.”
— Sarah M., Collinsville, IL

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View of a backyard with green grass, a large bush, and a house in the background. Four people are standing near the fence on the right side, with construction or surveying equipment visible on the ground.
Backyard with a rectangular swimming pool surrounded by concrete, with houses and a fence in the background, under clear blue sky.

FAQ

You’ve got questions,
we’ve got answers

  • Most pools take about 6–8 weeks from the time we break ground. Weather, permits, and material lead times can mess with that a little, but we don’t drag our feet — and we won’t leave you wondering where we went.

  • We build in-ground concrete (gunite or shotcrete) pools — custom-shaped and designed to fit your yard. No fiberglass shells. No vinyl liners. Just durable, permanent, real-deal pools.

  • We do both. We’ll walk you through the pros and cons and help you pick what works for your lifestyle and maintenance style. Either way, we’ll install it the right way.

  • Yep. We handle all local permits, inspections, and code requirements. You won’t be left trying to figure out city hall on your own.

  • We’re based in Collinsville, IL and serve most of the Metro East — Edwardsville, Troy, Glen Carbon, O’Fallon, Fairview Heights, and surrounding towns. If you’re within 30–40 minutes, we’ll probably come out. If you’re not sure — ask us.

  • We can handle design in-house. Whether you’ve got a full blueprint or just a rough idea scribbled on a napkin, we’ll help you turn it into something real — and buildable.

  • We stand behind our work. Every pool and concrete structure comes with a workmanship warranty. If something goes sideways because of something we did — we fix it. No dodging. No runaround.