I decide what needs to be done and then figure the costs to do so per category.

Should I have a separate account for each of these categories or keep them all in one account?

Without a full summary of the STR tax loophole for high W-2 wage earners, here is a link to the best explanation and summary I've come across and helped me digest the value of the benefit: HERE In short, the bonus depreciation rate was 100% in 2022, 80% in 2023 and is planned to be phased out to 60% this year. 

Bonus - Portland Suburbs.

I believe that there are a few really great zip codes that qualify with all of those categories.

There is a bonus unit in the attic that’s a 1bd 1ba and 4 rooms in the basement with standing shower and mini kitchen.

In 2023, it dropped down to 80% bonus depreciation.

Get Quicken, learn to use it (set up categories and subcategories) and start tracking your incoming and outgoing, for both personal expenses and rentals.

Thanks to the Cost Segregation Study, the property investors were able to reclassify the property into the following categories to accelerate the depreciation:The use of the accelerated depreciation strategy helps real estate investors to reduce the tax liability immediately which therefore increases their bottom line due to the offsetting of income.

I'd check the math on this before committing to this plan - it's not as straightforward as it seems when you get into using Bonus Entitlement.