Your buyer changes with the parcel, so it helps to sort by type before you go looking.
An infill lot inside city limits with water and sewer at the street sells to small builders and local contractors, and they're findable. Permit records at the county or city building department are usually public, so you can see who pulled new construction permits within a few miles and call them.
A 12 acre rural parcel three hours out is generally bought by an individual who wants to build or camp on it, or by a land investor who buys at wholesale and resells at retail with seller financing over several years. That second group is the reason land assignments close at all, and they advertise themselves openly on land marketplace sites and in land investing communities.
Raw acreage of real size, say a hundred acres at the edge of a growing suburb, goes to developers, and those deals take much longer and involve entitlement questions you'd want help with.
Most operators build a buyer list before they contract anything. Ask each buyer what counties, what acreage range, and what price ceiling they work in, then only chase parcels that match.
One thing to plan around: land buyers who need financing are a smaller group than house buyers, because raw land loans typically ask for more down and shorter terms than a mortgage, and terms vary by lender. Confirm in writing with whoever you're pointing buyers toward. Cash buyers are why land assignments move at all.
