They are sometimes used heavily and generate monthly profit while others are barely used and don't even cover the utility expenses, let alone the cost of the machines.

They're not expensive and will let you sleep better. 

During the event, they offer their more expensive membership/coaching.)  

If you haven't heard of them already some quick rules of thumb are to look for properties that rent for 1% or more than the purchase price and generally you should expect about 50% of your rental income to go back out in expenses like property management, capital expenditure, maintenance, vacancy etc.

@Alvin SylvainEven in California the landlord is required to make reasonable accommodations and allow the tenant to make modifications at their own expense as long as the restoration back to the original construction will not be an unreasonable expense to the landlord.Ripping out a second floor ramp or elevator will definitely fall into the unreasonable expense to a landlord. 

First, you should consider what expenses your property typically produces for tenants in addition to the rent.

This would be the least expensive option if your city allow for it.

(Showing them on schedule C or E or rental real estate income and expense if partnership, Corp, etc.) 

Remington  is almost expensive at this point.

How did you budget the traveling expenses during your renovation?