For instance, a neighborhood with alot of shopping then it may be good to have an open hosue on an early Saturday afternoon.
If there's many churches in the area where the house is selling then maybe you want to do an open house on a Sunday and stay until the church lets out.
For more quieter areas where there's no action, you may want to do an open house during the week in the evening when people come home from work.
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that is a great question. I was wondering that myself. I have tried different days to have a real world experience on this question. I so far found out in general Sunday seems to be the best. But that does not mean other days are not effective tools to promote your property. I think most effective drivers of interest for an open house have been price and location.
I also make sure I use my time at open houses effectively. I have my laptop and internet access( though cell or the clients network with their permission) That way whether or not anyone shows up I can still respond to email or answer questions ,Like I am right now. Also when a person does drop by I have any info ready for them and I can then send out an email and enter their info while it is fresh in my mind. I also have a portable printer to print out any info on the spot, including a contract. This makes my open houses office time to work on business rather than watching the grass grow .
I have also had opens during rush hour as it gets my listings noticed when there are no other open house signs out.
I have had more luck with odd times for an open rather than Saturday or Sunday, unless the home is one of the first ones in the subdivision.
I sell homes in two different states. You would be surprised how though so close in miles the way agents have public open houses and broker/agent open houses vary.
Public Open Houses:
New York: I have found most of the open houses on both Saturday and Sunday..anywhere from 12-4pm
New Jersey: I have found most open houses on Sunday only.
Broker/Agent Open Houses:
New York: Are not much into having them
New Jersey (monmouth county) is usually on Thrusdays between 12-4
So to answer your question with my break down above..would be ...check your area and go with the flow.