Assets identified in this study include:Concrete paving and paversFencingEquipment padsConcrete sidewalksLandscapingThis engineering-based cost segregation study included the following methodology:Physical Inspection through a site visitDocumentation review including architectural plans, accounting records and construction documentsA cost analysis which utilizes engineering principles in order to allocate costs to their applicable asset classificationsCalculation of the depreciation schedule using MACRSAs a reminder, bonus depreciation started to phase out in 2023.

Preferences for control and involvement, risk tolerance and investment objectives should all be considered in your decision. 

But are there any good 'rules of thumb' behind this principle?

Payment of the fee, charge, or other sum of money by a tenant does not waive the right or remedies provided by this section.Breach of lease agreementIt is a common principle that a contract must be followed in good faith by the parties.

Sue the old owner for aggravated mopery just on general principles.

There is an actual entire department of mathematics called Proof Theory.Proof theory is where you can take theories, concepts, and statements, and treat them as actual mathematical objects.

Remember, no system is perfect, so avoid the temptation of constantly chasing after the next shiny object.

Bought in 2018 and have over $500k in equity (through principle pay downs and appreciation over time).

But are there any good 'rules of thumb' behind this principle?

The Whole Foods/Trader Joes/Starbucks principle works as well.