A custom gunite pool is one of the largest investments a Houston homeowner will make — typically $75,000 to $150,000 or more. Unlike a car or appliance, you can't return a pool if the workmanship is poor. Once the concrete is in the ground, fixing structural problems is extraordinarily expensive, and disputes with unlicensed or uninsured contractors can drag on for years.
The Houston pool market has grown rapidly, and with that growth has come an increase in under-qualified contractors, fly-by-night operations, and outright scams. This guide covers the 8 most important red flags to watch for — from licensing and insurance to contract terms and payment structure. If you're also comparing pool types, see our guide to gunite vs. fiberglass pools in Houston.
"The most expensive pool isn't the one with the highest bid — it's the one built by the wrong contractor."
— Steven Renderos, Owner · Rhino Pool Pros
Every pool contractor in Texas must hold a valid license from the Texas Department of Licensing and Regulation (TDLR). Ask for the license number and verify it at tdlr.texas.gov. Additionally, require a Certificate of Insurance showing general liability (minimum $1M) and workers' compensation. If a contractor cannot produce both documents within 24 hours of your request, walk away.
A reputable pool builder provides an itemized written proposal that breaks down costs by category: excavation, steel, gunite, plumbing, electrical, tile, coping, decking, equipment, and labor. A lump-sum quote like '$85,000 for a pool' with no line-item breakdown is a major red flag. You have no way to verify what you're getting, compare bids fairly, or hold the contractor accountable if scope changes.
A standard pool construction deposit in Texas is 10–25% of the total contract price. Some builders request a larger draw upon permit approval. If a contractor asks for 30–50% or more upfront before any work begins, it may indicate financial instability — they need your money to fund other projects or cover operating expenses. Legitimate builders have the financial capacity to begin work without large advance payments.
Pool construction is a major investment — $60,000 to $150,000+ for a custom gunite pool. Your contractor should have a verifiable business address, an established web presence with real project photos, and a track record you can verify through Google reviews, the BBB, and TDLR complaint history. A contractor operating solely through a cell phone and a Facebook page with no verifiable history is a significant risk.
Phrases like 'this price expires today,' 'we have leftover materials from another job,' or 'sign now and I'll throw in the spa for free' are classic high-pressure tactics. A reputable builder gives you time to review the proposal, compare bids, and make an informed decision. Pressure to sign immediately is a sign the contractor doesn't want you to look too closely at what you're agreeing to.
Ask for a list of 3–5 completed projects in the Houston area that you can visit or contact. A builder who has been in business for more than a few years should have a portfolio of completed pools and homeowners willing to provide references. If they can't provide references, or if the references don't check out, that's a significant warning sign.
Most pool builders subcontract some specialized work (electrical, plumbing, gunite application). This is normal and acceptable. What's not acceptable is a 'builder' who subcontracts every phase of the project and acts purely as a middleman — often adding markup without adding expertise or accountability. Ask specifically which phases are performed by their own crew and which are subcontracted.
A standard gunite pool warranty covers the structural shell for 10 years and equipment for 1–3 years (per manufacturer). If a contractor offers no written warranty, or if the warranty terms are vague ('we stand behind our work'), get specifics in writing. What exactly is covered? For how long? What's the process for making a warranty claim? These questions should have clear, written answers in your contract.

Rhino Pool Pros is a fully licensed and insured Texas pool builder. We provide itemized written proposals, detailed contracts, and references from completed Houston-area pools. We come to your property before quoting — no showroom required, no pressure to sign.
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