Can an access easement that predates the plat still kill an assignment at the title stage

That worn road on the western boundary is the detail I'd be staring at. A road that looks used in satellite imagery but has no recorded easement almost always means one of two things: prescriptive use that never got formalized, or a pre-plat easement that got indexed under the original survey chain rather than the parcel description your county search is running against. Neither one shows up clean in a 40-year search because neither one attaches to the modern legal description.

On the abstract cost spread, the $400 quote is almost certainly a rundown, not a true abstract. A full abstract in Texas going back to patent can run $800 to $1,200 depending on how many conveyances are in the chain and whether the abstractor has to pull from deed records in multiple predecessor counties, which is genuinely possible in Hill County given how land changed hands in the 1930s and 40s. The $1,100 quote is probably closer to what you actually need.

What I learned running payment books for land notes is that sellers who bought post-2000 on rural acreage frequently have no idea what's in the chain before them, and their title policy only insured back to their purchase date. So his 2003 closing tells you nothing about 1952.

Have you asked the title company directly whether their commitment is based on a 40-year search or a full abstract, because that one question will tell you more than the premium quote ever will.

The short version on the search question: a standard 40-year search starts its chain of title at a deed from roughly 1985 and works forward. An easement recorded in 1952 lives outside that window entirely, which is exactly how it stayed invisible until underwriting. A full abstract, sometimes called a root-of-title search or a chain-of-title search back to patent, traces ownership from the original government land grant forward. In Texas, that often means going back to a Spanish or Republic of Texas grant, so the work is genuinely different in scope. That is almost certainly what is driving your $400-to-$1,100 spread: the lower quotes are likely 40-year searches with a different label on the invoice, and the higher ones are closer to a true abstract.

One thing worth confirming directly with the title company before you order anything: ask them in writing whether the search includes instruments recorded prior to 1950, and whether it covers appurtenant easements that may have been created by a deed to an adjacent parcel rather than by a standalone easement document. The worn road on the western boundary is a real flag. An access easement can be created by necessity or by long use in Texas without ever being recorded as its own instrument, and a title search of any depth will not catch a prescriptive or implied easement. That question goes to a Texas real estate attorney, not a title company.

On the practical side: yes, people do order early title work at the contract stage on raw land, and a few hundred dollars to catch a deal-killer three weeks early is much cheaper than losing a $14,000 fee. Ask the title company specifically for a full abstract and get their answer in writing.

Which title company are you using, and have you asked them directly which search type they quoted you?