Account Closed I use a formula: New tax value = 0.85 * [purchase price] * [county coefficient]You can get the county coefficient online or if you can't find it use the current property coefficient by using the following formula:[county coefficient] = [current taxes] / [current property assessed value on county appraisal district]All this data should be available online on the county's appraisal district website 

GRM method looks at the gross revenue and multiplies it by an appropriate coefficient, called multiplier.

L/V is the loan we take out relative to the purchase price we agree to pay. 2) the loan balance in the annual coefficient is the initial loan balance (the loan amount), instead of the loan balance in the process of paying it off.

It's a coefficient you multiply your equity on.

The "average" price for a home in CA is not particularly meaningful, unless you have clients that represent a simple random sample of all of CA's counties, then take the mean of those medians and add in coefficients to allow for unevenly distributed populations.Guessing that's not what you did.

The national average pre-COVID, FYI, was 9%.and last but not least, a profit reduction coefficient of negative (300k * ((mortgage interest rate) +(2nd home interest rate modifier))...Aka interest on a 300k loan.Again, the debt service is accounted for in the cashflow neutral proposition.

Usually by that time the Coefficient of Performance (COP) has fallen to <1.5 and often close to 1.0 (which is the same as an electric baseboard heater).

@Mack Benson agree on action part ..also i feel like putting a team = Polynomial regression where not only inputs matter but also co-efficient between inputs matter to find the bet fit for a particular market/asset class. 

We've had it for several years with some really cold temps in winter.The 200-300% efficiency has to do with the COP (coefficient of performance), heat pumps use energy to move heat, not to generate heat. 

If you really want to get nerdy, you can check out the solar heat gain coefficient ("SHGC") for the glass along with the U-Factor.