Foundation Inspection Before Buying a House in Oklahoma City

Who to call, and in what order

Three kinds of people can look at a foundation for you: a licensed home inspector, a foundation repair contractor and a structural engineer. They answer different questions, and only one of them is selling you something.

The home inspector goes first. If that report mentions foundation movement, get a foundation contractor out for a free evaluation and a written scope. If the scope is large, or two opinions disagree, pay an engineer. All of it has to fit inside your contract's inspection period, which is short.

If the home inspector has already flagged the foundation, get someone on site this week.

The home inspector

Oklahoma licenses home inspectors through the Construction Industries Board (CIB). A license generally takes a 90-hour approved course and an exam; check any inspector on the CIB's "Are They Licensed?" search.

The state's standards of practice (OAC 158:70-1-3) require the inspector to inspect the foundation, "including slabs, piers, columns, posts, stem walls," and to "describe indicators of foundation or structural movement." On a pier and beam house (one with a crawl space under the floor), they are supposed to go into the crawl space unless the headroom is under 18 inches, the opening is smaller than 18 by 24 inches, or it is excessively wet. If they skip it, the report must say how they looked instead. Read that line.

The same rules say the inspector is not required to determine the cause of a defect or perform engineering services, and may not estimate repair costs or advise you on whether to buy. So the report may say the floor slopes toward the back bedroom, but not why or what fixing it costs.

One more rule explains the next section. A licensed home inspector may not solicit or perform repair work on a home they inspected for one year afterward (OAC 158:70-11-2). The person flagging the problem cannot profit from fixing it.

A foundation contractor's free evaluation

A foundation repair contractor will usually come out for free, measure how far the floors are out of level and give you a written proposal. That proposal turns "indicators of movement" into a scope and a price you can take to the seller.

It is also a sales document. The contractor makes money when someone buys the repair. That is true of every contractor, including the one OKC Foundation Pros refers you to: we pass your request to an independent local contractor who pays us for the introduction. We do no repair work, and we are not neutral about whether you call.

That does not make it worthless. Use it this way:

• Ask for the floor elevation readings in writing, not only the proposal.
• Ask what is causing the movement and what happens if nobody touches it for a year.
• Get the scope itemized: how many piers (steel or concrete supports driven down to firmer soil), where they go, and any drainage or plumbing work.
• Compare the price with the published ranges in our foundation repair cost guide.

If the fix is small and the cause obvious (a downspout dumping water against the slab), that may be all you need. See choosing a foundation repair company.

A structural engineer's report

An engineer is the independent opinion. You pay for the visit and the report, and the engineer does not sell the repair. In a purchase, that independence is the point.

The standard Oklahoma contract expects this. It extends the buyer's right of entry to "registered professional engineers" and lists "Structural Inspection" separately from "Home Inspection." We would pay for one whenever the contractor's scope runs to many piers, when two contractors disagree, or when the house is old and on a crawl space. Cost ranges and how to check an Oklahoma engineer's license are on our structural engineer page.

Who	What you get	Who pays	Sells the repair?
Licensed home inspector	Describes signs of movement; no cause, no repair plan, no cost	You	No, barred for a year
Foundation repair contractor	Floor readings plus a priced scope	Usually free	Yes
Structural engineer	Cause, whether movement is active, what repair if any	You	No

Fitting it inside the inspection period

The Oklahoma Real Estate Commission's 2026 Residential Sale contract sets the clock. Under paragraph 7A, the buyer has the number of days written in the blank, or "10 days if left blank," to finish all inspections. The count runs from the Time Reference Date; if that is blank too, it is the third day after the last signature, and the next day is day one.

Within 24 hours after the period ends, you must give the seller copies of every written report you got and choose. You can cancel and get your earnest money back if, in your sole opinion, the results are unsatisfactory. Or you can send a TRR notice listing what you want treated or repaired, and then the two of you have the days in that blank (7 if blank) to agree in writing. Under paragraph 7D, doing nothing inside the period counts as accepting the property "regardless of its condition." Your contract may use different numbers, so check yours.

Ten days goes fast:

1. Book the home inspector the day you sign.
2. The day the report mentions the foundation, call a foundation contractor and an engineer at once. Do not wait on one to book the other.
3. Confirm the engineer's written report will arrive before your deadline.
4. If the house is old, on a crawl space or in a high-swell ZIP, ask your agent to write more than 10 days into the blank before you sign.

What to look for before you make an offer

In the listing, check the year built and whether the house is slab or pier and beam (see pier and beam vs. slab). "Foundation repaired" or "transferable warranty" is good news in one sense: someone dealt with it and has paper. "Sold as is" on a house with visible cracks means the seller expects you to find something.

During the walk-through, try every interior door, and look for diagonal cracks at window corners and stair-step cracks in brick. One freshly painted wall is worth a closer look. Our signs of foundation problems guide has the full list.

What your ZIP's soil tells you

The soil risk we track is clay that swells when wet and shrinks when dry. We mapped it by ZIP from USDA soil survey data. In south and west-central Oklahoma City (ZIPs 73159, 73139, 73119, 73120, 73162), 69 to 84% of the land is high shrink-swell clay. The east side is mostly the opposite: Choctaw (73020) and Midwest City (73130) sit largely on sandy Stephenville and Harrah soils with low shrink-swell.

Age matters too. Census data shows 72% of homes in 73107, 71% in 73103 and 69% in 73118 were built before 1960. A house that old may have been repaired more than once, so ask for the history.

So does the season. As of October 20, 2026, all of Oklahoma County was in severe drought (D2) or worse, per the US Drought Monitor. Cracks on a fall showing during a drought can look wider than they will after a wet spring.

Soil is a reason to look harder, not a verdict. A repaired house on high-swell clay can be a fine buy.

Ask for the repair paperwork, and whether the warranty transfers

The official Oklahoma disclosure form asks the seller, "Are you aware of any previous foundation repairs?" It also asks about warranties covering the property, naming the foundation as an example. If either answer is yes, ask for:

• the repair contract and final invoice
• the pier layout drawing
• any engineer's report or post-repair letter
• the warranty document itself

Read the warranty for what a transfer requires, such as a written notice or a fee by a deadline. Then call the issuing company and ask whether it will honor the warranty for you as the new owner. A lifetime warranty from a company that has since closed is just paper. Do it inside your inspection period.

A past repair is not a reason to walk. A documented one with a transferable warranty can beat an unrepaired house down the street.

What the disclosure law does and does not do for you

This is general information, not legal advice.

Oklahoma's Residential Property Condition Disclosure Act (60 O.S. § 831 and following) covers sales of homes with one or two dwelling units. Most sellers must give you a disclosure statement on the OREC form, and it must cover structural systems, the foundation included (60 O.S. § 833). The form can be no more than 180 days old when you receive it, so check the date. The seller's side is on our selling a house with foundation problems page.

What the law does not do matters more to a buyer. The disclosure covers only what the seller actually knows, and the statute requires the form to say in bold that it is "not a substitute for any inspections or warranties the purchaser may wish to obtain" (60 O.S. § 833). A seller is not liable for an error outside their actual knowledge (60 O.S. § 835). Agents must tell you about defects they actually know of that are missing from the form, but have no duty to inspect the house or check the seller's answers (60 O.S. § 836). Nothing in the Act makes the seller inspect or repair anything.

So a "no" on the foundation question only means the seller is not aware of a problem. If a seller hid a defect they knew about, your remedy is a lawsuit for actual damages, including the cost of repair, filed within two years after the transfer (60 O.S. § 837). That is a slow, expensive way to learn about a foundation.

Using what you find in negotiation

A written scope from a contractor, backed by an engineer's report if the job is big, turns "the floors feel off" into a number the seller has to answer. You can then ask the seller to repair before closing, lower the price, or give a credit toward repair. Whether a credit is allowed depends on your loan, so ask your lender early.

If the seller does the repair, the seller picks the contractor, and the seller's goal is the smallest scope that clears your list. We think you are usually better off taking a price reduction and hiring the work yourself after closing, to an engineer's scope, with the warranty in your name. If the seller insists on repairing, the contract lets you re-inspect the work (paragraph 7E). Ask for the engineer's sign-off letter and a warranty that names you.

Waiving inspections to win a bidding war on a house with visible cracks is a bad idea. So is accepting "it's just settling" from anyone who has not measured the floors.

Remember that the contract has you hand the seller every written report. If you walk away, the seller now knows what your engineer found, and that shapes what they must disclose to the next buyer.

Selling instead? The same logic runs the other way: an evaluation before you list means the buyer's 10 days hold no surprises.