I own a rental business; I am NOT a realtor, just an owner and landlord of several properties. Sometimes we sell our homes though and we work with a several agents in different areas that we like to buy houses in. In our area they most definitely do open houses but they dont get a lot of turnout to be honest. Our realtors do an open house on a Sunday from 2-4pm (which is pretty typical of ALL the realtors in this part of my state). People will wander in off the street, look at the house, take home a flyer with all the home info on it and leave. Its nothing formal. For those our realtors sometimes buy a bag of candy and have it sitting out. I offered to bake some cookies once for an open house and that realtor told me that in the past she used to put out a spread and most people wouldnt touch the food. Then she tried just a simple cookie tray from Wal-Mart and once again nobody wanted to eat. So now she also just uses candy in a pretty dish set up on the table with all the house info, like everyone else.
However, with one house we sold when we DID get a bite on it (a serious bite) I did bake homemade cookies. I didnt tell the realtor, I just did it. I put them out on a pretty serving platter with a pitcher of lemonade and plenty of little paper plates, cups and napkins. Also a little sign encouraging the potential buyers to help themselves and a little warning that those particular cookies contained nuts (just in case). They didnt eat many cookies but they did leave behind a note thanking us for the goodies and then their realtor contacted us to compliment the cookies and bragged on how impressed the folks were that Id done that. They did end up buying that home though I dont think it had anything to do with the cookies lol. They bought it for their mother who wasnt even present.
While I think its a cute idea I dont think it will get you much business. People want to see the house. Some people are there to steal valuables and drugs from the home (we were targeted for something of that nature with a house wed staged pretty well, probably too well). People dont want to sit and eat cookies, brownies or whatever other goodies you have sitting out. They want to see the house, speak with a realtor if they are interested and get out of there. Now if youre going to offer an assortment of cookies on a platter at a very reasonable rate (why spend $30-40 on a tray of cookies that will barely get touched when you can buy a $5 bag of candy and plop it in a bowl and if they dont eat it youre not out any serious money?) then that might work. In your case Id target higher end homes. Seek out those realtors who sell the really expensive house and work with a clientele that is expecting to be fussed over. If Im dropping a million or more on a house (which in my area would be a castle lol) I expect a spread. Maybe even a pony