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Red Flags to Watch for in a Custom Home Contract

Quick Answer

The biggest red flags in a custom home contract are vague allowances instead of real prices, undefined change order markups, a draw schedule that pays the builder ahead of completed work, no firm substantial completion date, and warranty language that is verbal instead of written. If a contract is silent or vague on any of these, slow down before you sign.

Dan Schlaak standing by the stone entry of a custom home he built in North Texas

I have read more custom home contracts than most people read in a lifetime, both ones I wrote and ones families brought me after another builder scared them off. The pattern holds every time: the contracts that cause the fewest problems are the ones that spell everything out in plain language, and the ones that cause the most pain are vague on purpose. Before you sign anything, walk through our five-step build process with whoever you hire, and have them show you, in writing, how each of the items below is handled. Here is exactly what I tell every client to look for.

What Are the Biggest Red Flags in a Custom Home Contract?

The five red flags that matter most are allowances instead of real prices, undefined change order markups, a draw schedule that front loads payment ahead of finished work, no firm completion date, and warranty terms that are not written down. Any one of these, left vague, is how a $1.2M to $4M+ custom build turns into a budget and schedule fight. A contract that handles all five clearly is one you can trust, whichever builder is holding the pen.

None of this is theoretical. We build between $250 and $550+ per finished square foot on homes that typically run 12 to 14 months of construction after 3 to 6 months of design and permitting, and the projects that stay on budget and on schedule are the ones where the contract did its job before the first shovel hit dirt.

Why Does an Allowance Instead of a Real Price Matter?

An allowance is a placeholder dollar figure for something you have not picked yet, flooring, cabinets, plumbing fixtures, written into the contract as if it were a real number. The red flag is a contract full of allowances that are low enough to make the bottom line look attractive, with no product reference attached. If the flooring allowance is $4 a square foot and you walk into a showroom and like tile that runs $9 a square foot, that gap is now yours to cover, on top of the price you thought you had agreed to.

A contract that handles this well either prices real, selected products you have already walked through and chosen, or sets allowances tied to a specific named product line so you know exactly what the number buys. We have covered this in more depth in what questions to ask a builder before you sign, and it is also why we build every home on open book pricing, where you see the actual invoice instead of a guessed number.

What Should Change Order Language Actually Say?

A change order is how a price or scope change gets added to a contract after signing, and the red flag is a contract that does not define how change orders get priced or approved. Look for three things specifically: a requirement that every change order is in writing and signed by you before work starts, a stated markup percentage on the added cost, and a clear trigger for what counts as a change versus what should have been in the original scope.

Without that language, a builder can treat almost anything as a change order, including items that should have been estimated correctly the first time. With it, you have a paper trail for every dollar added to the project and a ceiling on what that dollar can be marked up.

What Payment and Draw Schedule Terms Protect You?

A draw schedule sets out when and how much you pay as construction progresses. The red flag is a schedule that pays out ahead of completed work, for example a large draw tied to "foundation complete" that is actually invoiced before the pour is inspected, or a final draw that is a small enough percentage that the builder has little left to lose if punch list items drag on.

A fair draw schedule ties each payment to a verifiable, inspected milestone, requires lien waivers from major subcontractors at each draw, and holds back a meaningful final payment until the punch list is actually done, not just promised. We walk through draw mechanics and construction loan structure in more detail in how construction loans work in Texas.

What Does the Contract Say About the Completion Date?

The red flag here is simple: no target date at all, or a date with no consequence attached to missing it. A contract should name a realistic substantial completion date based on your actual scope, and state what happens if the builder misses it without a documented, legitimate reason such as a permitting delay or a weather event.

We tell clients up front that our typical build runs 12 to 14 months once permits are in hand, following 3 to 6 months of design and site prep, and we have delivered most of our 100+ homes within two weeks of the date we set. That track record only means something because the date was written down to begin with.

What Warranty Language Should Be in Writing?

Every custom home contract should spell out the warranty in writing, not as a verbal promise made during the sales conversation. At minimum it should state the length and scope of a workmanship warranty, a systems warranty covering mechanical items like HVAC and plumbing, and a structural warranty. We write every Open Prairie contract with a one year workmanship, two year systems, and ten year structural warranty, and we cover what that actually means, and what it does not cover, in what a Texas new home warranty actually covers.

A verbal warranty is not a warranty. If it is not in the contract, it does not exist when something goes wrong in year three.

What Lien, Indemnification, and Dispute Terms Should You Read Closely?

Texas law lets unpaid subcontractors and suppliers file a mechanic's lien against your property, even if you already paid your builder in full for that work. Your contract should require lien waivers from subcontractors tied to each draw, so a payment dispute between your builder and their framer never becomes your problem. The Texas Property Code's mechanic's lien statute spells out how exposed an owner can be without that protection written in.

Also read the dispute resolution section closely. Many contracts route disputes to binding arbitration instead of court, which is not automatically bad, but you should know which one you are agreeing to and what it costs to invoke it. If a clause is written in dense legal language you cannot plainly restate back in your own words, that is reason enough to ask your attorney before you sign, not after.

Contract element Red flag language What a fair contract says
Pricing Open-ended allowances with no product reference Priced selections or allowances tied to a named product
Change orders No written approval or markup stated Signed change order required, markup percentage disclosed
Draws Payment ahead of inspected milestones Draws tied to verified work, lien waivers required
Completion date No date, or no consequence for missing it Named target date with a stated response to delay
Warranty Verbal promise only Written 1-2-10 year workmanship, systems, structural terms
Disputes Dense arbitration clause, undefined cost Plainly stated process you can explain back in your own words

What Should You Do Before You Sign?

Read the contract twice, once for the number and once for every clause above. If anything is vague, ask the builder to put it in writing in plain language before you sign, and if the project is in the seven figure range, have a construction attorney read it too. Texas does not require a state license to build a custom home, which the Texas Attorney General's consumer protection office has written about directly, so the contract you sign is doing more of the protective work than most buyers assume.

I have been building custom homes since 1995 and I will sit down and walk through every clause of our contract with you in plain English before you ever sign it. If you are evaluating a builder, whether it is us or someone else, bring me the contract and I will tell you honestly what I would ask them to change. Call me directly at (817) 736-6323 or request a free consultation, and we will go through it line by line.

Frequently Asked Questions

Should a custom home contract be fixed price or cost plus?
Either can be fair if it is written clearly. A fixed price contract should spell out exactly what is included at what product level, and a cost plus or open book contract should disclose the fee percentage up front. The red flag is not the pricing model, it is a contract that will not commit to one.
Can a builder change the price after I sign a custom home contract?
Only through a written change order tied to a specific, documented reason, like a selection upgrade or something found on site such as rock in a footing trench. A contract that allows price changes without a signed change order, or that defines change orders loosely, leaves the door open to being billed for things you never approved.
What happens if my builder does not finish on time?
A solid contract names a target substantial completion date and spells out what happens if the builder misses it, whether that is a defined grace period, liquidated damages, or at minimum a written explanation requirement. A contract with no completion date at all gives you no way to hold anyone accountable for schedule.
Do I need a lawyer to review my custom home contract?
For a project in the seven figure range, yes. A construction or real estate attorney reviewing the contract before you sign costs a small fraction of the project and can catch lien, indemnification, or arbitration language that is easy to miss on your own.
What is a mechanic's lien and why does it matter in my contract?
A mechanic's lien lets an unpaid subcontractor or supplier place a claim against your property, even if you already paid your builder in full. Your contract should require lien waivers from subcontractors at each draw so you are not exposed to a claim from someone you never wrote a check to.
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