Water damage can cause a very serious damage to structures.Sorry I was not able to give you any specific numbers to help you but good luck, sometimes keeping it simple might be good to get started with.

I do not have a sheet but I typically budget $150 for lawn, $150 for pool if applicable, $100 for cable, $100 for water, $300 a month for electric (depending on property size and your local utility costs), $50 for pest control, and another $200 per month in misc. 

I am debating whether i should just fix the shower pan. or, rebuild shower as well just in case water leak is coming from shower walls. what do you think? 

Every area I know has gotten worse and worse and worse on it.Fifteen years ago,  when I was buying, rehabbing houses and holding, I oculd hire a licensed contractor and they were able to change toilets, faucets, even water heaters.

About half of them because of heat, storms, fires and fresh water concerns.

Stocks haven't performed as well in the last 20 years as they have historically from 1950-2000 and the valuations especially on newer companies is eye watering.

I had a client buy an REO property and there was a water leak.

Water heaters need replacing, bank errors occur, tenants move out, real estate bubbles happen, etc. 

Scheduled to open in the summer of 2019, the $51 million, five- story, 267-unit development will be a large and distinctive presence on the east side of Water Street.- In the past five years, Mobile has experienced a 33% increase in manufacturing jobs compared with about 8% nationally.- McGowin Park developed a huge retail space in 2015 which consists of: 199,500- square-foot retail shopping center containing a future expansion area, five restaurant "pads" and 4.5 acres of outparcel development, and the west development consists of a 148,000-square-foot anchor store with an associated gas station, an 89,600-square-foot shopping center and 7.41 acres of outparcel area.

If there's a repair or capital expense like new water heater, might take a little more time with getting estimates.