Most real estate are handle according to the state laws of the state in which you reside. Title and escrow closer make sure these laws are followed to the letter of the law.
Hiring a real estate attorney could be beneficial if there was an unusual transaction, but most real estate transactions are mundane and cookie cutters.
Then if you are securing a mortgage loan another professional is there to insure that things go right during the transaction. These professionals are required by federal and state laws to provide you with the various RESPA law requirements covering interest rate, APR, terms and terms of the mortgage loan you are getting for this transaction.
Now if the sellers are carrying the mortgage loan and there are no mortgage companies you might consider legal advice on the mortgage arrangements and since you are there this attorney might consider looking over your contract.
I hope this has been of some use to you, good luck.
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