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What Are Common Mistakes to Avoid When Building a Custom Home?

There are 3 common mistakes you can make when building a new home that can derail your whole home building project. Take a look at each one below so you understand what you should know before building a home, and the 3 common mistakes to avoid. 

By: Brian Carlin

What to Know When Building a House

Homebuilding is a complex process. That’s why you may find there are mistakes that can happen in the home building process. We hope this guide provides some insights into what those are so that by providing tips for what not to do when you build a home, you will walk away with the best tips for building a house.



3 Common Home Building Mistakes to Avoid

As mentioned above, there are mistakes that can be made in the homebuilding process. Here are 3 mistakes that are the most common. 


Mistake #1: Designing a Custom Home without Your Builder's Input


This is by far the most common mistake when preparing to build a house. People who work on designing their custom home before choosing a home builder end up spending more time and money on their home project than they need to. 

As you prepare to build a house, you should START by choosing your home builder and THEN work on the DESIGN for a few reasons:

1) Budget is the top priority and the home builder understands the costs involved

2) Home design drives your budget

3) You can save money by choosing an existing design and make custom changes




1) Budget Is the Top Priority and the Home Builder Understands the Costs Involved

Bankhead Legacy Floor Plan (Hedgefield Custom Homes North Texas)

Your home builder is the one living in the costs each day—not the designer, architect, homeowner, salesperson or real-estate agent. The local home builder manages the project start to finish, so they understand the best ways to save money when building a new home.


2) Home Design Drives Your Budget

09_Kitchen - Hedgefield Custom Homes

What makes the cost of building a home more expensive? These 3 aspects of home design: Home Size, Home Complexity, Home Features.


size icon with textcomplexity icon with textfeatures icon with text



size icon Home Size

The bigger the house, the more material and labor it takes to build. The taller the ceilings, the more drywall, paint, insulation and labor required; the bigger the kitchen, the more cabinets, counters and flooring required; the taller the roof, the more shingles, lumber and labor required. 

Now, it may also be true that the cost per square foot is lower on a larger home than a smaller home and a smaller home may cost more than a larger home overall, but, nonetheless, size is typically the main factor driving the total cost of a new home.


complexity iconNew Home Complexity

If you build a home on a flat lot with a foundation that is one level and a single wall height at 8', the structural complexity is low. But if you build a home on a lot that slopes 20', you want the foundation to step down with 3 different levels, you want a cantilevered balcony overlooking the hillside and you want 5 different wall heights from 8' to 13', then you have increased the complexity and the cost greatly, even if the square feet of living space is the same for both homes. 

The most efficient shape to use to build your custom home is a square on a 24" grid. The square shape minimizes the exterior wall area, which is where the siding/brick, windows and paint are. The 24" module generates less waste because you minimize the amount of material, such as OSB and Sheetrock that you have to waste in the process of cutting to fit. 

Of course, we have to balance this rule with the beauty we are trying to achieve with the home design, or we will end up with a square box with no windows and low ceilings throughout.


features iconNew Home Features

How many bathrooms do you want? Are there tiled showers; if so, how many? How large is the kitchen? How many lineal feet of cabinets will you have? Is the exterior siding brick or stone? Is there a 3-car garage? Which type of flooring is included? Is the flooring wood or carpet? What type of doors and windows are included. and how many of each? Are gutters included?

The features of a home can greatly impact the total cost, and because there are so many features to consider, it's easy to get overwhelmed. 

Here are some common new home features and options to consider as you prepare to build, and which ones to prioritize.



Now you can see how two home builders may quote the same-sized home for your project but the pricing can be so different. The complexity and new home features offered (and maybe even the size of the walls, roof and ceiling heights) may cause significant differences in price. This is why it is so difficult to get a straight answer when you ask 3 different home builders for an "average price per foot" for a home. 

What each home builder calls a home may be very different. This also helps us see why beginning with the home design without your builder's input is such a challenge.



3) You Can Save Money by Choosing an Existing Home Design and Make Custom Changes



Designing a one-off plan that is different from the plans the builder already offers is always more expensive than working with the home builder's plans. 

To build a new floor plan requires more upfront work to design and estimate, and the builder has to cover any contingent costs that may arise from building a new style of home for the first time. For example, if the home builder typically builds single-story brick homes with 9' ceilings and simple roof designs, and you begin with a plan that has stucco and siding, two-story ceilings and a steep, complicated roof, you can't expect the builder to be able to build that home for the same price per square foot as he can the rest of his portfolio. Often, the builder has designed new home portfolio plans with savings in mind, which isn't always the case with fully custom plans. This isn't a reason not to build one-off plans, just a reality that has to be taken into account.

If you go with a plan that the builder has already built, or one that he has already designed and is value-engineered, then the builder will know much more about the cost of that home, and he can price it much more accurately with less "fluff" because the cost is more predictable. Even if your plan is a new, custom plan, sticking to the overall principles the builder uses to design his homes will allow him to deliver what they do best, and hopefully they are value-engineering their plans to maximize value and reduce cost.


Value Eng Info Box


Hedgefield Homes offers both pre-designed plans, which can be customized, and also design one-off custom plans. 


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Mistake #2: Not Understanding What Is Included in the Homebuilding Project

Sketch of home

It is difficult to get your arms around the hundreds of decisions that go into building a new home, and it's frightening to think you may miss something big... Sure, you may have received the one-to-two-page "included features" sheet from the builder, but does it tell you what kind of toilets will be used, or whether shower glass is included, or who takes care of running the utility lateral lines, or what the structural sheathing is made of, or how the foundation is built and inspected? 

At some point, early in the buying process, the builder should provide a detailed description of everything included in the build price. This may include plans, pictures and specifications, and it may be long—ours is 7 pages—which may sound exhausting, but you'd rather be educated than surprised that the counter in your master bathroom is really laminate when you expected granite, or worse, the site work you thought was included in the price isn't. 


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Mistake #3: Trying to Do Too Much on Your Own

Home Construction

Building on your lot is complicated, and most people need a trusted guide to hold their hand and walk them through the process. We have worked with several engineers who work in commercial construction, but even they realize they don't have the expertise or experience to hire and manage the right contractors to do the work correctly. 

Be sure to find a custom home builder who will help you with more than just the house; someone who will assist with site development, utilities, paving, landscaping, etc. 

And what about finding and evaluating land? The builder can and should offer valuable insight early in this process, if consulted. 

However, there are absolutely aspects of the home building process that can be managed by the owner—if they are properly supported by the builder with references, pricing and specs. Through our Instant Equity Program, we help our customers put cash in their pocket by helping them manage some of the work, such as: site development, landscaping, sod, fencing, utilities, gutters, even paint and flooring. We are there to help and guide along the way, so you are never on your own.


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What Other Mistakes Do Homeowners Regret After Building a New Home?

While the 3 mistakes listed above are the most common mistakes when building a home, there are a few more we wanted to address in this article that can also happen and cause the homeowners to regret their decisions throughout the home building process:

  • Choosing a home builder who isn't a good fit for you or your project

  • Not sticking to a firm budget

  • Prioritizing finishes like fixtures or tile over architectural options like porches, fireplaces or taller ceilings

  • Making design decisions "as you go" instead of upfront


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While some of these home building mistakes may scare you away from home building, be sure to check out this article: Why Do We Keep Building Houses in Texas?” to understand the many benefits of building a new home in Texas and why equipping yourself with what NOT to do when building a new home is going to set you up for SUCCESS as you prepare and build your new house.

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