When to do Cost Segregation analysis ? Needs recommendations for engineers.

[Chinmay Patel]

New investor..need some advice. 

Have 2 SFR homes in Longview Texas. One is LTR and other recently purchased will be a STR. The STR one is 1989 built and needs some Rehab in form of paint, cabinets, appliances, floor, fixtures, water heater etc. I will qualify for REP status based on STR loophole.

Should I do Cost segregation before or after rehab?

Can I do the analysis on my LTR as well this yr in order to use  up the 80% bonus deppreciation allowed for 2023?

If both properties are around 250k  what are the typical cost for the segregation studies.

Please suggest reliable cost segregation engineers that service East Texas. 

Appreciate yours help.