We start with the ARV and back into the target price we're willing to pay by subtracting out the rehab budget, contingency reserve, profit margin, buy and sell side closing costs, and holding costs for the time value of money.

This is after averaging out the costs of 1) roof, mechanicals, siding, flooring, etc. and dividing by their life span then also subtracting general maintenance costs (handyman type stuff frozen pipes, etc.) you see each year.

Consider it as a baseline, says Quicken Loans: When you sell the property, the cost basis is subtracted from the net sales price to determine capital gains tax liability.

You then have a total income of $150,000 which is subject to tax, after some subtractions.

Consider factors such as location, amenities, and market demand.Run the Numbers: Calculate your potential cash flow by subtracting your mortgage payment, property taxes, insurance, and maintenance expenses from the expected rental income.

Then subtract your profit that would satisfy and that would be how much you'll pay for land 

. ($20k land and $100k building)Over 13 years you depreciate about $50k.You sell for $200k net and buy a $500k property ($400k building $100k land)You bought $300k more building and have $50k left from first property so your new basis for depreciation is $350k that you depreciate over 27.5 years.Now that I type it out, an easier way to get to this answer would be just take the new building value and subtract your total depreciation taken so far and that’s your answer. ($400k new building minus $50k taken already equals $350k)

Also my cash flow is not that great (relative to value of RE) because I have extracted value on a consistent basis (income is almost $20k/month more than piti but when subtracting off the other expenses (cap ex/maintenance, vacancy, misc) it is less.

Take the arv subtract construction costs and carrying and offer from there 

On your cash flow are you subtracting out what you pay yourself/benefits for you, taxes?