When we sold the house we did not charge the investor a commission.

You take a deposit per usual and charge them for any damage beyond wear and tear.

This is straight from the CFPB website: "Additionally, for 60 days from the date your loan servicing transfers, your new servicer cannot charge you a late fee or treat the payment as late if you sent it to your previous servicer on time or within the applicable grace period."

You could also charge a damage deposit, though there are pros and cons to this.

I am originally from there and manage on in Ventnor and have had some issues getting a straight answer on what I should even be charging for tourist tax. 

You have trusted contractors that are charging a fair price ? 

If the agent is doing the marketing, finding the potential buyers and possibly working with other agents to help you secure a deal then I would still charge 2.5% for my listing services and 2.5% to any buyer's agent. 

After a $500 plumber bill I no longer wish to continue stressing out about this business; at the beginning (10 years ago) it was fun and challenging, now, after seen how we are the ogres (landlords in general), the outrageous government response with the eviction moratorium during Covid, the raise in taxes and insurance, service people who charge you more than a brain surgeon, the fact that this country is becoming dangerously socialist and the tenant drama I finally decided It is time to look elsewhere for investments.I just cannot find any information of what to do when I sell my properties.

Quote from @Shayan Sameer: I would reach out to a couple lenders see if you can get some competitive rates and also see about the points too that they are charging..

NOTE: we charge extra for this.4) What about a floor plan, so prospective tenants can get an idea where their furniture may fit?