When faced with this issue, you have two choices: 1) upgrade to an Advanced Treatment System (ATS) at a cost of $45,000 - $85,000, or 2) install a new leach field for $8,000 - $12,000.

Choice Warranty350/ yearUsed them for the first time not long ago.

If you're like me, who used to own 11 turnkey rentals and sold them all, and many accredited investors go through a similar process, then doing a cost segregation may not be the best choice.

Understand how you might sell or transition your investment in the future.It's wise to speak with financial experts, real estate agents in your area, and maybe even a real estate investing mentor before making a choice.

Your choice. 

If they have the choice, they will just wait until inflation has brought wages up enough.

Quote from @Bruce Lynn: Laser tape measure, or a real one to measure rooms.Bolt cutters or a small tool kit that goes in the car.Powerful flashlight for looking in dark homes.A few spin key boxes to put on vacant homes.Books on real estate, like The Millionaire Real Estate Agent book, The One Thing, or The Millionaire Real Estate Investor.Some kind of BP subscription or books.Tape measure and flashlight are good choices for him.

Tough choice but can't go wrong with either decision :DLook into the cost of each and how much it would benefit you currently once finished vs the long term (10+ years). 

And as a 20+ year Broker/Realtor, it’s the absolute best career choice I’ve made.  

If you have a choice between investing in a vacation property that you might actually use from time to time when it isn't rented and buying another C/D rental out of state, go with the vacation property.