How can I search for homes for sale by doing a search from an address and seeing homes for sale close to it?

There isn't such a feature that I'm aware of on the internet. A realtor would be able to assist you with a search.How can I search for homes for sale by doing a search from an address and seeing homes for sale close to it?
www.zillow.com has this feature. I'm not sure if it shows every house for sale in the area, but it should give you an idea.

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