If your log term goal is cashflow I prefer multifamily for the onsite management, forced appreciation, and consolidation.

If you see the consolidated financial statement, you will just be confused. 

I have attempted to secure a HELOC loan to consolidate debt (credit card and auto payments) but my credit is near 650.

If so, it's already beginning to consolidate and restrict the market.- I'm not sure I fully understand this statement "After a dozen years remodeling and appeal for a rent increase and start raising again

If you do, you can consolidate into one big loan so it's easier to pay off.

You may need a separate LLC for an apartment complex, say one of 50 units another with 200 units as they have different business concerns, but if Jack Smith owns both, you'll likely see a Jack Smith Holding company, where accounting is consolidated limiting the accounting and tax burden.

*Exception: A lessor's charge for the lease of tangible personal property affixed to real property is not taxable if the lessor of the leased property is also the lessor of the real property to which the leased property is affixed.https://www.revenue.wi.gov/Pages/FAQS/ise-taxable.aspxIf we have a parking fee as a "subcategory" of "Rent Income" with "leases longer than 30 days", does Wisconsin still consider the "non-temporary" parking rent income sales taxable at 5%Of course, some landlords simply just consolidate the extra fee into the rent amount and say parking included, but I’d like to have a clearer idea how WI treats lease add-on fees.

Sublease and Assignment.Tenant shall have the right without Landlord’s consent, to assign this Lease to a corporation with which Tenant may merge or consolidate, to any subsidiary of Tenant, to any corporation under common control with Tenant, or to a purchaser of substantially all of Tenant’s assets.

We both purchased houses (2018, 2020) and after we got married consolidated into one house.

Or consolidate debts.