Robin, this is an excellent time to approach sellers in our area with such an offer. The trick is to present the offer to the seller properly since many of them may have never considered financing the sale.
There is one possible down side. That is that a seller may not be as inclined to part with the property at the lowest possible price under these terms.
There are other options, such as offering the seller the possibility of selling their note to some of our investors or structuring the deal by obtaining financing from any of the dozens of hard money lenders with whom we work.
With a 50% down payment, it may be possible to acquire te property without getting the seller involved in the financing and therefore enable us to negotiate a purchase at a lower price and maybe even lower interest rates resulting in a lower total cost for the investment.
Feel free to contact me if you would like additional information.

There are several nice options in Aventura; One Island Place, The Point, Porto Vita, The Hamptons, Williams Island, The Waterways, etc. With 40-50% down... there are many sellers with equity that will take aserious consideration to your offer. There are many excellent agents and brokers in Aventura that can guide you in the right direction. Michael Solovay certainly is one of them. The link below will give you a good idea of what is available in Aventura and the surrounding area.

http://waterwayrealty.sef.mlxchange.com

Mott Marvin Kornicki
Real Estate In Miami

http://www.AventuraTheWaterways.com

Owner financing is possible especially instances where the Seller owns the property free and clear. The price range that you are looking to spend would enable me to pin point which properties might work for you.