Ah, an oldie but goodie thread. Oddly enough CFD's were a much larger part of a licensing course I took recently. I found that interesting.
@Jennifer Handlin to address your questions, a contract for deed or land contract or bond for deed all being an installment contract for the purchase of real property are contracts where the Vendee (buyer) pays the agreed upon purchase price plus interest over time to the Vendor (Seller). The vendee gains an equitable interest in the real property and the vendor retains legal interest. In layman's terms this means the buyer can enjoy and possess the property but the seller retains full and perfected ownership merely granting the equitable interest to the buyer. The seller looks more like a landlord and the buyer looks more like a tenant. That's not overkill, that is an important detail to understand as it sets the stage for the relationship with the Vendee and the property itself.
So in order to transact both the legal interest in the property must be granted to you along with the beneficial interest in the contract for deed. They are two separate things. As to the property conveyance your party has mentioned they will convey using a Quit Claim Deed as opposed to a Special Warranty Deed or Warranty Deed. Quit Claims offer the least protection to the new owner from previous defects or claims. If they are willing to do either of the other two, that is something you should pursue.
The probable explanation for their use of a QCD is they did not seek to quite title from the tax payer who lost the property. As such, they likely don’t have title insurance currently. Even if they did, they could not transfer it to you. That is something you would need to obtain for yourself.
You are aware of the hurdle to obtain title insurance and the need to file a Quiet Title action in the county of the subject property. If you want clear title either the seller or you will have to file the suit. Prior to your purchase, if you choose to follow through, you should check with legal counsel to make sure you will receive all you need for this action if you plan to file it yourself after purchase.
In regards to changing the CFD/LC after you buy it – "NO" you may not unilaterally change the contract. You must honor what was written in full. The existing contract will be assigned to you through an assignment instrument and should be recorded after the deed is recorded. As a side note, the actual contract for deed/land contract should already be of record. Any amendment to the contract has to be in writing and agreed to by the Vendee.
As such, it is important to read the actual installment contract and be aware of the terms to which you will be bound as the new property owner. If the contract calls for you to provide clear and marketable title any defects not resolved by you or the current seller will be your burden down the road. To that extent, there is no real template for these installment contracts.
In general, like most contracts, it should contain an offer, acceptance, some form of consideration, all parties are of sound mind and the terms for the financing should be clearly spelled out including loan amount, interest, payment and term. Then it also needs to deal with what your obligations and duties are as the Vendor including what you may or may not be able to do (such as mortgage the property or sell it) and their obligations to the property such as maintenance, taxes, insurance and any future conveyance requiring payment in full. If there is default language in the contact pay attention as that is how you will have to proceed with delinquency and defaults, if they occur.
As you are not familiar with the instrument you will probably want to have legal counsel review it to make sure it is properly structured. In addition, and I can’t stress this enough, that you can live up to the obligations set forth in the future as the Vendor. Such as delivering a specific deed and/or title being insurable. Or even, the obligation of the Vendor to hold insurable title during the term of the contract – which would already be a breach.
As mentioned above, these instruments have risen in frequency and that means less than adequate instruments could be in use. This can pose a risk to a buyer if they do not properly understand the instrument and/or get all the documents and transaction properly reviewed. Good luck.