Building $348213 x 3.636% = $12,662 (my calculation)
I assume you are using TurboTax 2018 CD version that you installed on your computer. Your math is wrong. You should be using the mid-month convention, straight line for residential rental real estate per IRS Pub 946. For a property placed in service on 9/18/2018 the math is:
$348213 x 1.061% which is $3694 for the first year depreciation on the property. The $9,136 you say TTX is coming up with indicates that you are not properly classifying the asset as residential rental real estate under the MACRS system.
