Subject-to contract or agreement

[Belliny Flores]

Good day BP community!

It seems I have finally found my first property and its the perfect opportunity for a subject-to. But since I'm new at this I don't know what paperwork I'm going to need here or if I just need to go to a real estate attorney to make all this happen. I've been listening to the podcasts non stop but they don't give details on how to get these deals under contract. I'm in Tucson Arizona and I'm hoping someone can point me in the right direction on where I can find this paperwork so I can gwt it under contract and do it right so I don't get into any funky legal situations.