Your agent should be the one to tell you what you can do to help sell your home, whether it be painting, new carpet, flooring or curb appeal. Hopefully the agent you're working with has the experience to tell you what you can do to optimize your results!
This is true, sometimes the only feedback we get is that it isn't the house for them. There isn't always something specific and many times it's something that can't be changed (it's on a busy street, the yard isn't what they want, the rooms are small), and many times the seller or agent debate the issue with us!
During an open house, I once pointed to an agent that there were so many ants crawling along the baseboard and that it may require an exterminator to correct (or maybe the residents should clean up more thoroughly). Her response? She looked at me like I had just criticized her own housekeeping skills. If looks could kill, hers did.
I thnk if asked, most agents will provide comments. But in many cases, we are not asked, either. When I email an agent for their feedback on MY listings, I include a link to my listing so that they know which one I'm asking about. Most of the agents responded once they knew which one it was.
This should be part of your real estate agent's marketing plan and should be outlined to you how he/she captures everyone who sees the house.
Please interview, and hire the right agent for the job.
I prefer feedback requests that are emailed to me, preferably including a photo of the home. Then I am able to give the other agent meaningful feedback, and I do so very promptly.
This is also how I handle my listings. It allows me to email my sellers as soon as I hear something, so that they are not wondering how the showings went.
I am curious on what you base your statement.
My experience is that Realtors will provide feedback, however they are busy just like anybody else so the Listing Agent needs to be creative and purposeful in soliciting feedback.
Based on your post I would guess that the situation to which you refer exists because the Realtor needs to find another way to get the information. We all have opinions about property that we see.
Now, you did not say, but one of the common issues in most markets is selling price. Posts like yours says "everyone loves our home, all the Realtors say it is priced well". And it's been on the market for three months. Phooey! Not true.
In most markets when these questions are posted many homes have sold since the listing hit the market. So it is an issue of value, not feedback. Buyers want value. Sometimes the market speaks so clearly that sellers just cannot hear it.