You can find 3-6 comparable properties (nearby) sold no more than 90 days prior.70% of After Repair Value - Repair cost = max offer price Livable - $25x sqft Not livable - $40xsqft The above formula is usually how I calculate rehab costs and after repair values!

It an other on line appraisals are a math formula that uses zip codes, sales and assesment data.Garbage in, garbage out.If the assessment data is wrong the Zillow value will be wrong.

What formula have most used and had good success with?

I be running comps in the area I come up with different numbers because I’m not sure what formula to use I’ve try a range from .7 to .83 just don’t understand where to go from here

Once you have the right formulas, you just have to enter the above information, and below will be created automatically. 

Hello Joshua,You can use the CONCATENATE formula.Type in: =CONCATENATE(A1," ",B1," ",C1," ",D1," ",E1)step 1: type in formula in the formula barstep 2: press enter to get your resultsstep 3: drag to copy downHope this helps.Thomas Thatcher

I would not try to estimate based on a formula, unless you've done it hundreds of times already.

My friends in the angel and VC industry have a simple formula - five times in five years.

it is an upscale apartment complexMike: Your formula of 50% works for you because your properties are generally low-end.

The bottom line for me is that if a property doesn't meet my formula then I don't buy.