Guess one should look at the factors that may explain why the house isn't selling. Principles of marketing: price, product, placement, promotion,
The first thing we review is the price. If it's over priced, it's not going to move. Some sellers may be in denial and refuse to accept their realtor's recommendation on a marketable price.
Condition of the property ---many buyers make decisions within seconds of seeing (or driving by a property). If it looks bad (junk/trash in the yard, and in obvious need of serious repairs), it may not entice buyers except for people looking for fixer uppers to fiip. But for fixer uppers, the price has to make sense, i.e., low enough to make room for investment in repairs, and to earn a profit when sold.
How is the property marketed? Is it on the MLS? Does it feature lots of good photos? Again, people can make decisions within seconds. As such, the photos must create the most positive impressions. Here's an artilcle about 12 horrible real estate photos that will scare away buyers
How easy is it to show to prospective buyers? If there's a tenant, is the tenant cooperative? Are the residents willing to have a lockbox that realtors can access upon making an appointment?
Where is it located? The most oft-repeated phrase "location, location, location" is still true. If it's in a less desirable location, all the more that one should focus on the other marketing principles.