10 Mistakes to Avoid Building a Custom Home in the RGV
Custom Homes, Rio Grande Valley, Construction Tips
Over more than 33 years of building in the Rio Grande Valley, the team at South Texas Builders has seen the same costly mistakes repeat themselves for local families. This guide, written by the South Texas Builders team led by Javier Gonzalez, second-generation Director of Construction, is designed to help you avoid those pitfalls so you can enjoy a smooth, confident journey to your new home.
Mistake 1: Skipping the Lot Evaluation
Why your RGV lot is not “just dirt”
In the Rio Grande Valley, the ground beneath your future home is one of the most important “hidden” factors in your project. Our local soils are often clay-heavy, which means they expand when wet and shrink when dry. If your foundation is not designed with these conditions in mind, you can face cracks, shifting, and long-term structural issues that are far more expensive to fix than to prevent.
Flood zones are another critical piece of the puzzle. In certain areas of McAllen, Edinburg, Mission, Pharr, Weslaco, Rio Grande City, Roma, Brownsville, Harlingen, San Benito, and Alice, flood plain requirements can affect the type of foundation you need and what is allowed on your lot. Ignoring this step can delay your permits and force expensive design changes later on.
Utilities: the surprise many owners discover too late
Many buyers assume water, sewer, and power are already available at their lot. In reality, utilities may not exist at your property line, or they may require additional work to connect. Because water and electrical connections are not included in the build packages, this is something you want to understand clearly before you start planning your dream kitchen or entertainment wall.
💡 Pro Tip: South Texas Builders offers free site evaluations with no obligation so you can understand soil, flood, and utility conditions before you commit to a design.
Once your lot is properly evaluated, you are ready to think about how much home you can comfortably build, which leads directly into the next common mistake.
Mistake 2: Designing Before Getting Pre-Approved
Avoid falling in love with a home you can’t finance
It is exciting to start sketching floor plans and picking finishes, but designing a $300,000 home when you qualify for $200,000 is one of the fastest ways to waste time and create disappointment. Before you invest energy into detailed blueprints, you should have a clear picture of what lenders are comfortable approving for your situation.
South Texas Builders works with a wide range of local lenders and can help you explore options such as FHA, VA, Conventional, Construction-to-Permanent, and USDA loans. The team can connect you with lenders the same day when you call 956-594-6936, so you are not guessing about your budget.
Get pre-qualified before finalizing square footage or upgrades.
Match your wish list to your approved loan amount.
Use your pre-approval to choose the right package level for your needs.
With your financing path clear, the next major decision is choosing the right builder to guide you through the process from start to finish.
Mistake 3: Choosing a Builder Without a Track Record
What to verify before you sign a contract
Your builder is your partner for one of the largest investments of your life. Working with a company that cannot demonstrate stability or experience in the Rio Grande Valley can lead to delays, quality issues, and broken promises. There are several simple checks you can make before committing:
Years in business:South Texas Builders traces its roots back to 1992, when Israel Gonzalez founded Gonzalez Construction in the RGV. That is 33 years of experience in this region’s unique conditions.
License and insurance: The company is licensed and insured in Texas and holds an A+ BBB rating.
References and completed homes: You can review real projects at south-texasbuilders.com/portfolio.
Named leadership: The team is led by Javier Gonzalez (Director of Construction) and Cristo Calderon (Director of Sales), with Rolando Pena and Graciela Leal in key roles.
You can learn more about the company’s history and leadership at south-texasbuilders.com/about-us. Once you trust your builder, the next step is protecting your budget before the first shovel of dirt is moved.
Mistake 4: Not Locking In Price Before Ground Breaks
Price certainty in a changing market
Construction costs can change over time, especially when material prices move. If you do not lock in your price before construction begins, you may find your budget shifting halfway through the build. With South Texas Builders, pricing is locked once your contract is signed and selections are finalized, giving you confidence about your total investment.
The company offers clearly defined packages in the RGV area: Basic at $105/sqft, Medium Basic at $111/sqft, Fully Loaded at $115/sqft, and Fully Loaded Two-Story at $122/sqft, plus optional upgrades such as metal roofs and 10 ft plates. Once you choose your package and complete your selections, your price is set, and you can plan accordingly.
📌 Key Takeaway: Change orders after construction begins almost always cost more time and money, so it pays to finalize your plans early.
Once your price is locked, it is time to think about the calendar and how long each step will take, starting with permits.
Mistake 5: Underestimating Permit Timelines
Setting realistic expectations for move-in dates
Many families circle a move-in date on their calendar before permits are even submitted. In reality, permit timelines vary across the Rio Grande Valley. For example, McAllen permits typically take 3–6 weeks, while other RGV cities and Starr County can have different and more variable timelines.
South Texas Builders manages all permit submissions that are included with your home (all permits except windstorm, if applicable). Building this time into your expectations from the beginning helps avoid stress and frustration later in the process.
Once permits are underway, the focus shifts to making sure your design decisions are solid before the crew starts framing your home.
Mistake 6: Making Changes After Construction Starts
Why timing matters for design changes
It is normal to refine ideas as you see your home come to life, but the timing of those changes can make a huge difference in cost. Changes before framing typically involve adjustments on paper and are relatively low cost. However, changes after drywall is installed often require demolition, rework, and additional materials, which can quickly add up.
To keep your project on time and on budget, South Texas Builders encourages families to finalize decisions during the blueprint and selections phase. You will work closely with Selections Coordinator Graciela Leal to review options and make choices that fit both your style and your budget before construction begins.
💡 Pro Tip: Take extra time in the planning phase so you can enjoy the build phase without constant changes or surprises.
With your layout and finishes set, you can now focus on how your home will perform in South Texas heat for years to come.
Mistake 7: Ignoring Energy Efficiency in South Texas
Building for 100°F summers, not just for move-in day
In our region, summer temperatures often exceed 100°F. A home that looks beautiful but performs poorly in this heat can leave you with high utility bills and uncomfortable rooms. That is why energy efficiency should be a priority from the beginning, not an afterthought.
The Fully Loaded package at $115/sqft includes several important energy-focused features: open-cell spray foam insulation, high-SEER HVAC, Low-E windows, and a radiant barrier. These upgrades are designed for South Texas conditions and can help the home stay cooler and more comfortable while reducing wasted energy over time. For two-story homes, the Fully Loaded Two-Story at $122/sqft carries these benefits across both floors.
Energy-focused features in Fully Loaded packages help homes stay cooler in RGV summers.
Once you understand how your home will perform, the next safeguard is making sure every detail you have discussed is clearly documented.
Mistake 8: Not Getting Everything in Writing
Protecting your investment with a clear contract
Verbal promises and casual notes can easily be forgotten or misunderstood over the course of a months-long build. To protect both you and your builder, everything important should be in writing. This includes:
The full scope of work and what is included in your package.
Material allowances and how they apply to your selections.
The change order process and how costs are handled if you make adjustments.
Details on warranty and how to request service.
A realistic timeline for major phases of construction.
South Texas Builders provides itemized contracts with defined allowances for each package level, so you know exactly what you are receiving. This clarity sets the stage for smoother selections, which is where many families encounter the next common mistake.
Mistake 9: Choosing Finishes Without Knowing Your Allowances
Making design choices that respect your budget
Walking into a showroom without understanding your allowances is a quick way to fall in love with materials that do not fit your budget. The Fully Loaded package comes with specific, clearly defined allowances to guide your selections, including:
Tile flooring:$2/sqft material allowance.
Countertop slabs:$700 per slab.
Cabinet hardware:$500 total allowance.
Kitchen backsplash:50 sqft at $8/sqft.
During your selections meetings, Graciela Leal helps you choose materials that align with these allowances so you can stay on budget without sacrificing style. This is also when you will see the benefit of the company’s policy of providing free custom blueprints with every home, which helps ensure your design and selections work together seamlessly.
With your design, budget, and selections aligned, the final safeguard is confirming that other families have had a positive experience with your builder.
Mistake 10: Not Asking for References
Hearing directly from past clients
A reputable builder should be comfortable connecting you with past clients. Skipping this step means missing out on real-world feedback about communication, quality, and follow-through. You should feel free to ask to speak with previous homeowners and visit a completed home to see the workmanship up close.
South Texas Builders is happy to provide references and encourages families to review their work at south-texasbuilders.com/portfolio. You can also explore common questions at south-texasbuilders.com/frequently-asked-questions and learn more about building on your own property at south-texasbuilders.com/build-on-your-lot.
📌 Key Takeaway: A builder’s past projects and client experiences are the best preview of your own future home.
Bringing It All Together: Build the Right Way in the RGV
From clay-heavy soils and flood zones to permit timelines and energy efficiency, building a custom home in the Rio Grande Valley involves many moving parts. The good news is that you do not have to navigate these decisions alone. With over three decades of experience, an A+ BBB rating, and a dedicated in-house team led by Javier Gonzalez, South Texas Builders is structured to guide you step by step—from free lot evaluations and free custom blueprints to clear contracts and thoughtful selections.
Whether you are planning a Basic home at $105/sqft, a Medium Basic at $111/sqft, or a Fully Loaded home at $115/sqft or $122/sqft for two stories, the goal is the same: a well-built, comfortable home that fits your life and your budget in McAllen, Edinburg, Mission, Pharr, Weslaco, Rio Grande City, Roma, Brownsville, Harlingen, San Benito, or Alice.
Call to Action: Build the right way from day one. Call 956-594-6936 for a free consultation and to schedule your free site evaluation.
Frequently Asked Questions About Building with South Texas Builders
Below are answers to some of the most common questions families in the Rio Grande Valley ask when planning a custom home with South Texas Builders.
What areas does South Texas Builders serve?
South Texas Builders builds custom homes throughout much of the Rio Grande Valley, including McAllen, Edinburg, Mission, Pharr, Weslaco in Hidalgo County; Rio Grande City and Roma in Starr County; Brownsville, Harlingen, and San Benito in Cameron County; and Alice, Texas. If you are unsure whether your lot is within the service area, you can call 956-594-6936 to discuss your location and project.
What types of loans can I use to build my home?
The company works with a variety of loan options commonly used in the Rio Grande Valley, including FHA, VA, Conventional, Construction-to-Permanent, and USDA loans. The team can connect you with local lenders who are familiar with these products so you can find the option that best fits your financial situation and timeline.
What is always included in South Texas Builders’ home packages?
All packages include all permits except windstorm (if applicable), 10 dirt hauls at 14 yards each, a windows allowance of 1.5% of the sale price, recessed lighting in the electrical allowance, and free custom blueprints with every home. These inclusions are designed to cover the major essentials of building a quality home in the RGV while giving you flexibility in finishes and upgrades.
What is not included in the home price?
Some items are not included in the base home price, such as septic tanks, windstorm insurance, appliances, mailboxes, and water and electrical connections. Extra dirt hauls beyond the included 10 are also not part of the standard packages. Understanding these exclusions upfront helps you plan your overall project budget more accurately.
Can South Texas Builders build on my own lot?
Yes. South Texas Builders regularly builds on client-owned lots throughout the Rio Grande Valley. You can learn more about the process and what to expect at south-texasbuilders.com/build-on-your-lot, and the team can provide a free site evaluation to review soils, flood zones, and utilities before you move forward.
How do I get started with South Texas Builders?
The easiest way to get started is to call 956-594-6936 to schedule a free consultation. The team can discuss your lot, budget, preferred package level, and loan options, and then walk you through the next steps—from pre-approval and design to permits and construction. You can also explore more information about the company at south-texasbuilders.com/about-us and review answers to common questions at south-texasbuilders.com/frequently-asked-questions.
