I have done many nothing down deals and with no interest seller financing We call it a principal mortgage
Too bad - brokers always find ways to be negative with agents (some don't want them to become too successful and leave their brokerage, IRS does not look at your contract (that's not your problem!). I understand that if there is seller finance with no interest the IRS could impute .06 interest (this is not going to hurt you at all. it is up to the seller to take care of that, you may want to disclosure that however. First learn about - don't let others discourage your from becoming a successful investor - others hate your success!
I don't think your broker knows much about creative financing!
Why use your own money when you can negotiate nothing down?
* On a Principal only mortgage, the loan will be paid off faster since there is No Interest all payments go to reduce principal... and because of that you can offer more for the building!
* make sure you have full right to assign your mortgage to another buyer, (assumption rights) so you sell the property with the no interest mortgage, but you can do a wrap mortgage and get interest on money you owe. Make sure there is no acceleration clause and that you build in a early pay-off discount. Do not offer a balloon payment unless you want to use it to negotiate the deal.
Get yourself a HP-12-C and learn how to use it, it can be your best friend.
you can also create paper (mortgage notes on other properties you or a partner or friend has at a low interest and use the note as a down payment consideration.
you could offer a down payment to be paid later in installments or when you assign the building or re-finance. You could offer other things for a down payment, a car or chattels.
I don' want to get too creative in this response, but there are many of ways to have your way with sellers to accomplish your profitable deals.
Write an offer on a skinny contract with a delayed settlement subject to possession - always use "banking days" and build-in an automatic extension - this way you will have it when you need it, (and you will, nothing goes as expected!)
Always offer "subject to existing mortgage and liens (this eliminates need for your own money)
Consider options with possession.
Offer the seller a Hybrid, that is he will be your partner and receive more profit when you sell or assign.
You could offer the seller an option to buy back (as long as you get a discounted deal.
Offer services for the down payment, we call it a "front porch clause"
You'll agree to fix or repair something in consideration for X$ down payment to be applied to the purchase price.
Creative financing is about CONTROL! learn how to CONTROL real estate and you'll never need to use your own cash (or listen to uninformed brokers). I work a program called "Control and Roll". it works great for those folks who don't have money.
Good luck to all -- Charlie