You can also use sites like rentometer to help confirm your rent price.

I know that @John Underwood for example provides TV in addition to streaming at some of his places.

If there is no agreement signed and this person is just someone listed from the broker's database, I do not believe it is acceptable for the broker to collect a split in addition to the house split.If you are to consider negotiating this additional split, there is a lot to take into account here... what is the % of business that you generate on your own vs. how much your broker contributes?

On DLBA site.

Without seeing your lease, if the lease says that 'charges are due as additional rent' the charges may fall into housing delinquency law.

If you're ever looking for any additional advice/information feel free to reach out! 

I don't really come on this site much anymore.

Not following the requirements (within Seattle city limits will likely have additional rules and regulations) opens the seller up to liability.Additionally, the seller always has the option of offering "cash for keys" arrangement but be sure that no funds change hands until after the property is vacated and locks are changed.John

For estimating rehab costs, try using the BiggerPockets Rehab Estimator Tool or get quotes from contractors through sites like HomeAdvisor or Thumbtack.

Go to Etsy and search for "rental property tracker," and you will find hundreds of nice spreadsheets to track 10-20 rentals, usually for under $10.Software has extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.