Anyone has done it in DC without hiring an attorney?

I know checking with our attorney will be the final word, thank you for indulging me: We CANNOT charge the pet fee if they tell us it is a service dog then, correct?

Use an attorney.

And to piggy back on @Rip Rittell's comment, this coming Tuesday will be one of the best topics and speakers you could ask for pertaining to this topic because one of our top local, investor-specialized title attorneys is speaking on lease purchase, owner finance and bond for deed, which are all strategies that can be used to facilitate step 1, the "B" in BRRRR with very little to even zero of your own money down to acquire the property.

Since I had been licensed in PA for a number of years, I took the “cram course” to learn the differences, PA is a title state, NC is an attorney state, and the forms.

If I were you I would certainly have a well qualified real estate / securities attorney involved in the venture.

Does anyone know of any attorneys/ title companies that are familiar with Wholesaling?

Speak to your CPA and attorney.

Are there any investor-friendly real estate attorneys on Long Island to help at closing?

When asking a couple of title agents for a referral for a real estate attorney to assist with "Subject to" closings they both stated these deals can not be done if the existing loan is FHA or VA or any other gov loan.