Quote from @James Nix: It's obviously a leak and the most likely culprit is the toilet.

(c) The purchaser shall be entitled to all rents paid or accrued including oil and gas or mineral agreement rentals to the date of the redemption, and the rents must be prorated to such date.

Any company insuring your properties without an inspection most likely has a clause buried deep in their policy allowing them to deny claims for conditions found on the property that do not meet their UW standards and they will deny you claim based on "the house should have not been insured with them anyway".Although the inspections can be annoying look at it from the other side.You pay them 1000 to 3000 a year to insure a rental property where they agree to pay out possibly hundreds of thousands of dollars if it burns down or up to 1 million if a tenant slips on a bananna peel and falls down the steps or the tenants dog bites someone and since you didn't enforce the tenant having their own renters policy to cover the dog bite the landlord's policy is paying out.The insurance company is very much like your rich uncle backing your business venture - you run the business, he takes on the financial risk from disasters, and doesn't even get a say in who lives in the property.Your rich uncle asking you to fix the steps, put up a handrail, etc which is in your and his best interest long term.Do you really want to rent out a property with a busted front step and a bad roof that is going to leak sooner than later?

As of now utilities (electricity, water, gas and sewage) are a flat rate of $100 per unit which is tacked onto the rent.

I used to work for a start up, we sold maintenance software to big oil and gas, chemical companies and other big producers.

I guess you havent been to the grocery store in the last couple years , filled up your gas tank , paid your insurance , or bought a car  ? 

To simply put, property accounting is anything to do with the actual property operating day to day accounting such as rent income and rent expensesCorporate accounting is anything to do with the LLC as an overall so if you pay for gas for your car for business, it will be corporate, if you pay for a meal, this is corporate, paying for business licenses, office supplies, etc.Actually I learned this from him

On the other side of the property is a gas station with ample space between my lot and the gas pumps.The old Wendy's sign is still on the property in front of the parking spaces on a grassy area.

As others have said, there’s plenty of way to make up this marginal cost that saves your guests the embarrassment of asking upstairs to toss down a half used roll or make an unexpected run the gas station with a dirty bum

We had a surprise at the end when we were getting ready to re-rent and had gas leaks in all of the units.