Some of my costs are photography, pamphlets, sign placement, utility company marking utility for sign placement, placing it on the electronic lockbox system, I usually do a little bit of landscaping..mulch and flowers, depending on the price point of the property I might also need to pay for staging and professional maid service.  

It becomes what next...you can't sing happy birthday?

Give her a second notice and hope she pays then a month from now when she doesn’t, give her a third quit or pay notice as well and buy her flowers and say “pretty please “and maybe she will pay part of Mays rent .

Can you compromise by planting flowers and using mulch rather than sod?

Maybe painting, carpet cleaning, new flooring, fountains, flowers, etc. 

Example: A landlord typically allows building residents to reserve the community room for activities such as birthday parties.

@Rajeev Kotyan, Thanks for the input...it's like a beautiful field of flowers planted atop landmines. 

The comparable sales approach can be tough b/c sometimes I can't find comps, especially in Philly where each property and each block is its own unique and special flower.

Ex] wedding invitations, birthday cards, thank you cards ect... typically only coming from people you personally know.

Now if you felt that this was going to be your last home and you plan to have your ashes scattered in the flower bed when you die, then having that additional long term income stream from an ADU might be a great investment.