I'm looking for a good landscaping contractor to plant a tree at my rental in the Copperfield area of Houston in Sommerall.

Mostly landscaping and replacing an old ceiling fan in the patio. 

Price $430kGOI: $52,200Taxes + Insurance: $14,600Vacancies / Gas Heat / Maintenance (estimate): $8,250On-site property manager landscapes and repairs for discounted rent. 

A landscaper could do the retaining wall. 

what are setbacks required for sidewalks, landscaping, parking requirements, etc. 

Due to the age of some rentals, other items to consider is concrete driveways / walkways, septic and sewer (if property is on well/septic), landscaping, entry doors / screen doors (my tenants like to ding them up moving stuff in/out, so replacement is about every 5 years or so.

And also you keep the tenants, landscapers etc.

It DOES include taxes and insurance.Your analysis seems to be missing some potential big ticket items including but not limited to:InsuranceHOA FeesRepairs ($1000 per year seems low, that's only $83 per month)Landscaping/Grounds MaintenanceProperty Management (include it even if you will self manage for the time)

In a *typical* building they cover wide range of common expenses for example; management, insurance, water, sewer, garbage, fire system, elevator, janitorial, landscaping, and the list goes on.

Operating expenses include utility, payroll, landscaping, pest control, taxes, insurance, repairs and maintenance to name a fewThese are expenses, different from capital expenditures such as fridges hot water heaters and flooring.