"As-is" is a term about condition, not about honesty. The distinction matters because the phrase is often heard as though it settled everything. A seller who says "as-is" is saying: do not ask me to repair anything, do not ask me for a credit, and price the house accordingly. A seller who conceals a known defect, or who answers a direct question falsely, has done something the clause does not address, and remedies for concealment and misrepresentation come from elsewhere in the law.
The label carries the most weight where the seller genuinely knows nothing, and state law recognizes that. The clearest case for it is a seller who never lived in the property: a lender that took a house through foreclosure, a court-supervised probate or trustee sale, a bankruptcy trustee, a fiduciary administering an estate, a sale under a writ of execution. Those are also, in California, precisely the categories that the disclosure article exempts, so the seller is not withholding a disclosure and is not required to make one. In that situation "as-is" is not a negotiating posture. It is an accurate description of a seller with no knowledge to share and no statutory obligation to share it, and it tells a buyer exactly how much of the investigation is theirs.
What an ordinary owner-occupant means by it is different. When a person who has lived in a house lists it as-is, they usually mean they will not do repairs, not that they know nothing. Their state's disclosure duty, whatever it is, applies to them the same as to any other resident seller. The practical reading is therefore two-part: the clause tells you about repairs, and the seller's category tells you how much information you are likely to get.
The buyer's own investigation becomes more valuable, not less. An inspection on an as-is sale is not pointless because the seller will not fix anything. It is how the buyer prices the deal and how the buyer decides whether to proceed at all, and where the contract keeps an inspection contingency the results are still the buyer's exit. Waiving the inspection as well as accepting as-is condition is a different and much larger decision than either one alone, and it removes the only step in the transaction that exists to answer the buyer's question rather than the lender's.
Financing may not go along with it. An as-is contract binds the buyer and the seller; it does not bind the lender, and it does not bind an appraiser. A property with problems serious enough to affect habitability or the security of the loan can fail to qualify for the financing the buyer applied for, which narrows the field of buyers able to complete the purchase at all.