~Rough ratios allow you to compare zip codes and regions fairly quickly before you get into more property specific due diligence (taxes, insurance, utilities, etc)

So right now at the end of September- I am considering two options - winterizing or renting short term (heavily under-market just to cover utilities expense) till spring.

Tenant pays all utilities & I would do lawn care myself.

Some photos would be a great help, but here's how I would tackle it, if it is outside: Use a utility knife to cut away old caulking.

The highest mid FICO scores I usually see for people with high utilization and no late pays or derogatory accounts is 670-680.

This April I closed on a GREAT deal in the heart of a hot market here right outside of Charlotte and rented out my master for another $750 a month now collecting $2,300 a month on the property (I'm paying the utilities).

My thought was:1 - I put the down payment and assume the mortgage.2 - Contractor (no skin in the game at this point) buys materials to complete the necessary upgrades3 - When it is done we sell the property and subtract the down payment, material cost, mortgage payments, utilities, settlement costs - and then whatever is left we split.  

Holding costs- in your example there probably wouldn't be much if any holding costs because the renters are staying during the rehab, but most BRRRRs are empty so you would have some holding costs in the form of insurance, utilities, maybe taxes depending on how long the rehab takes so you will want to have those in the numbers as well.

From those numbers, 3 of us and my girlfriend will be living in the house, so say 1800/4 + utilities estimate, we would come out to around 500/month each if we split the costs evenly.

So, apart from estimating your price by checking similar properties in the area, make sure that you also factor in all of your expenses such as appliances, utilities and taxes when figuring out how much rent to charge.