So Same thing happens if we throw a pool in Adjusted basis originally = $200k Add a pool = $250k Immediatey depreciate a pool as a year 1 land improvement w/ bonus depreciation = basis reduced by $50kSo your adjusted basis is back to $200k IN the same example above ...5 years in: $250k (orginal purchase + pool) - 19k-50k (depreciation on house and pool) = $181k adjusted basis So if you sell for that same $250k- 181k adj basis= $69k gainBut the whole thing was caused by depreciation so since you've taken 69k of depreciation your entire gain would be taxed at the higher recapture rate 

Bought a new-built fourplex last year for about $700k, if  do a cost segregation can get about $120k bonus deprecation, which can lower my tax by $10k(plus about $20k loss carry forward).  

(long time until they see the first meaningful bonus). 

With that said he is looking to invest because he receives large bonuses, causing a large tax bill.So, my question is what is the best route for us to take that will give the best tax benefit.

Washer/dryer not necessary at all, just a bonus if you have one.

The bedrooms are all generously sized and feature large closets, and the master suite features a luxurious en-suite bathroom with a soaking tub and separate shower.

Has anyone done a cost segregation on a rental property since the 100% bonus depreciation became allowable in 2018?

You can talk to a broker, they will probably tell you that you can take the 23 units by right add an additional 8 units with the density bonus and they will put it on the market for $100K a door, they dont understand development. 

They have a great product that will soon come with ZipForm and Docusign integration which will be an added bonus.

.- (Bonus points here to make your New Jersey lender happy) Make a list of all the real estate you own on Schedule E, in order.