To crunch a few numbers, 6 hours/day at $20/hr multiplied by 6 days equals $720 in saved costs.

This then allows him to add those transparent numbers up to a total estimated hours, ( giving him the practice and confidence in his estimating ability)that can then be multiplied by the $30/hr add  in 10% For unforeseen issues and you then have a transparent number that you can both start to work from. 

Hey Jon great asking questions on here, remember the only STUPID questions are the ones never asked..The cash out refi programs are leveraging 70-75% of the appraised value so when you are finished with rehabyou will open it back up with title to have the property refinanced with a lender at which time you will pay between 400-700 dollars for a 3rd party non affiliated appraisal company to appraise your property (always run tight comps, if the house is brick and 2 story then find other houses that are the same in the same area that have sold within 6 months if you dont have access to good comps ask 3 different realtors to run CMAs on your property and get the avg and multiply that average by 90%)once your property is appraised you will go to close with the adjusted amount from lender to meet the qualifying coveragefor instanceyou are ALL IN for 120k (also include all carry and closing costs) and you find a lender that will cash out refinance (or not cash out different states have different % lending stipulations) at 75% LTV your property gets APPRAISED at 150k that means the lender will lend you 75% of that number which is 113kso you will NEED to to come out of pocket to finance the difference of 113k and 120k plus closing costs in orderto keep the property. 

(These numbers work in my market so I am just using those numbers)$ 8000/ $ 800 = 10 properties   (***Assuming $800 - 900 Per door for paid off rentals)Multiply that by a factor of 1.2 so you need 12 properties to be safe. 

The standard method appraisers use for determining construction costs (and feasibility) is to use Marshal Valuation Service cost manuals, adjust for the multipliers, add estimated development fees, site costs, sales commissions ect.

If a property is not cash flow positive when rent is multiplied by 75%, then how would a conventional lender add this calculation into your DTI? 

Miles from Line 44 are multiplied by the IRS allowance and then entered on Line 9.Please clarify, because your tip makes no sense for accountants.

Now multiply the $10,000 by 75%. 

@Jaren BarnesI don’t really play in the MF sandbox but some colleagues that do are always talking about Gross Rent Multiplier.

I see tax re-proration agreements utilized or even other methods, such as basing your tax credit off the new assessed value, multiplied by the current tax rate and equalization factor.