The Project
You've seen the thumbnails: a massive hole in the ground, a concrete shell, and the ominous question "Will It Collapse?" The DIY luxury swimming pool trend is taking over YouTube, and for good reason. It's the ultimate test of ambition, engineering, and sheer guts. But here's the truth most creators won't tell you: building a pool that doesn't collapse is a serious structural challenge. I've been a master craftsman for over 20 years, and I've seen more backyard disasters than I can count. This isn't a weekend project—it's a months-long commitment that can go sideways fast.
Why is this trending? Because it's the perfect storm of high stakes, visual drama, and educational value. Viewers love to watch someone take a massive risk and either succeed spectacularly or fail epically. The "Will It Collapse?" hook is pure gold—it plays on our fear of catastrophic failure and our fascination with luxury. The DIY luxury pool is the ultimate backyard upgrade, but it's also a minefield of potential mistakes. If you're a creator looking to jump on this trend, you need to understand not just the build, but the psychology behind the content.
What You'll Need
Before you even think about digging, let's talk about what this build actually requires. And I'm not talking about a kiddie pool from the hardware store. We're talking a proper, in-ground, luxury swimming pool that could cost a professional $50,000 to $100,000. For a DIY version, you'll need a lot of heavy equipment and materials. First, an excavator or a mini-excavator—renting one will set you back $1,000 to $2,000 per week. Then, you need concrete: a lot of it. For a 20x40 foot pool, you're looking at 40 to 60 cubic yards of concrete. That's around $4,000 to $6,000 just for the mix.
Next, you'll need reinforcing steel (rebar) to give the concrete tensile strength. You'll use #4 or #5 rebar, spaced at 12 inches on center, both ways. That's about 2,000 to 3,000 linear feet, costing $500 to $1,000. Then there's the waterproofing—a membrane or a pool liner that costs $1,000 to $3,000. Add in plumbing for the filtration system, pumps, and lights, and you're looking at another $2,000 to $5,000. Total material cost: $10,000 to $20,000, easily. And that's without labor—your own time is free, but it's a huge investment.
Here's the trick most pros won't tell you: you can save money by using a shotcrete or gunite application instead of traditional poured concrete. Shotcrete is sprayed onto the rebar and cures faster, but it requires a specialized crew and equipment. If you're going full DIY, you'll need a concrete pump truck and a crew of at least three experienced people. Don't try this alone—it's dangerous and the results will be poor. The tool that makes this 10x easier is a laser level for ensuring the pool is perfectly flat and level. A cheap laser level from Amazon ($50) is better than nothing, but a rotary laser level ($200-$500) is worth the investment.
Step-by-Step
Step 1: Design and Permits. This is where most DIYers fail. You need a structural engineer to review your plans. The soil type, water table, and frost line all affect the design. I've seen pools pop out of the ground because the walls weren't thick enough. Your pool walls should be at least 8 inches thick for concrete, and the floor 6 inches. Get a permit from your local building department. If you skip this, you're risking a collapse and a lawsuit.
Step 2: Excavation. Mark the pool shape with spray paint and start digging. You need to go at least 4 feet deep for the shallow end and 8 feet for the deep end. But here's the critical part: the walls must be sloped at a 45-degree angle or less to prevent cave-ins. If you dig straight down, the earth will collapse on you. I've seen it happen—it's terrifying. Use a laser level to check the depth every few feet.
Step 3: Rebar and Plumbing. Lay the rebar in a grid pattern, tying it together with wire ties. The rebar should be 2 inches above the ground to allow concrete to flow underneath. Install the plumbing lines for the skimmer, main drain, and return jets. Use PVC schedule 40 pipe. Here's the trick: pressure-test the plumbing before pouring concrete. If a pipe leaks after the concrete is set, you'll have to jackhammer it out. That's a nightmare.
Step 4: Concrete Application. This is the make-or-break step. You need to pour the concrete in one continuous operation—no cold joints. If you stop, the concrete will set and create a weak seam. Use a concrete pump to get the mix into the hole. Screed the concrete level and use a bull float to smooth it. Then, apply a broom finish to the floor for traction. For the walls, you'll need to use forms or shotcrete. I prefer shotcrete because it's faster and stronger, but it requires a skilled operator.
Step 5: Curing and Waterproofing. Concrete needs to cure for at least 7 days. Keep it wet with a sprinkler or cover it with plastic. After curing, apply a waterproofing membrane or install a pool liner. I recommend a vinyl liner for DIYers—it's forgiving and easier to install than tile or plaster. Finally, install the filtration system, fill the pool, and balance the chemicals.
Safety First
Before you start, here's what you need to know: this project can kill you. Excavation cave-ins are a leading cause of death in construction. Never enter an unsupported trench deeper than 5 feet. Use trench boxes or slope the walls. Concrete is heavy—a cubic yard weighs 4,000 pounds. If a form fails, you'll be buried. Wear steel-toed boots, gloves, and a hard hat. Use a respirator when mixing concrete dust—it causes silicosis. And never work alone. Have at least two other people on site who know how to call 911.
What NOT to do: don't use untreated lumber for forms—it will rot and collapse. Don't pour concrete in freezing weather—it won't cure properly. Don't skip the rebar—concrete without reinforcement will crack and fail. When to call a professional: if you're unsure about the soil type, water table, or structural load, hire an engineer. A $500 consultation can save you $20,000 in repairs.
Troubleshooting
What can go wrong? A lot. The most common issue is water leaking through cracks in the concrete. This happens because the concrete wasn't cured properly or the rebar wasn't placed correctly. Fix it by applying a hydraulic cement patch or an epoxy injection. If the leak is large, you might need to install a pool liner over the concrete.
Another problem is the pool floor settling unevenly. This is caused by poor compaction of the soil before pouring. If you notice the floor is uneven after the concrete sets, you can grind it down with a concrete grinder, but that's a lot of work. Prevention is key: compact the soil with a plate compactor before pouring.
Here's a plan B: if the in-ground pool seems too risky, consider an above-ground pool with a deck. It's much easier to build and still looks luxurious. You can use treated lumber for the walls and a vinyl liner. It won't have the same cachet as an in-ground pool, but it's safer and faster to build.
The Result
What does the finished project look like? If you do it right, you'll have a stunning, custom luxury pool that rivals anything a professional could build. The water will be crystal clear, the edges will be crisp, and you'll have saved tens of thousands of dollars. But be honest with yourself: it will take months, not weeks. I've seen DIY pool builds take 6 months to a year. The cost will be higher than you expect—add 20% for surprises. And the stress? It's intense.
What would I do differently? I'd hire a professional for the concrete work. It's the most critical part, and a bad pour can ruin the entire project. I'd also invest in a good laser level and a concrete vibrator to remove air pockets. Finally, I'd document every step for the video—the failures are just as valuable as the successes. Your audience will love the drama of a near-collapse or a leak that almost ruined everything. That's the content gold.
Honest reflection: this is not a project for beginners. If you've never worked with concrete or heavy machinery, start with a smaller project like a deck or a shed. But if you're experienced, ambitious, and have a good safety crew, go for it. The video will be epic. Just remember: the pool isn't the only thing that could collapse—your reputation will too if you cut corners and the pool fails. Build it right, or don't build it at all.
