Knowing a ball park figure can help me pick a price I will see if the homeowner will accept because there is alot of needed work)What kind of project planning should I do to make this an efficient project and reduce cost but keep quality?

Assuming the property is in the Denver area, the issue is likely drainage and ground water.

I have been connected with BP for the last couple years by just dipping my toes in the water occasionally, but this year I am looking to jump in! 

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

I tried to estimate 20% higher on repair costs since i do not have a wealth of experience estimating yet, there is some minor water damage, and some heating and electrical that needs to be replaced, which is where most of the expense came from.

We have a dozen or so properties there, that are without water indefinitely, perhaps as long as month.Of course, that's small change compared to the utter destruction and loss of life.  

I’m moving out of the house soon and will be living rent-free with my wife at my parents' place in the Bay Area due to some recent life changes.Here’s a breakdown of my situation:Location: Sacramento, CA (4 bed, 2 bath, recently renovated)Current mortgage payment: $3,940/month (including escrow)Mortgage balance: $475,000Current home value: $515,000 - $535,000 (based on comps)Rental estimate: Property management companies are quoting $2,600/month (with fridge/washer/dryer included), but some websites suggest it could go for up to $3,000/month.Planned budget:$540/month for capital expenditures and maintenance$100/month for lawn careTenant to cover utilities (gas, electricity, water)7.5% vacancy rateWe bought the house thinking it would be our forever home, but with our current situation, I’m trying to figure out the best long-term plan.

FEMA rental Assistance covers the cost of monthly rent and essential utilities, gas, electric, water, trash, and sewer.

Markets are relatively efficient even in real estate. 

There is a design efficiency that they need to work on for their floor plans.