A Solo 401(k) may be advantageous for self-employed individuals, offering the potential for participant loans, higher contributions, and no custodian fees, as well as higher contribution limits and the option for tax-deferred or Roth contributions.This post does not create a CPA-Client relationship.

Best neighborhood and best assets are subjective and largely based on the individuals capabilities (balance sheet, skill set, time etc.)

planning to list them for 2024 taxes as 6 different properties and when rehab will be done , I will get all 6 deeds, can I sell individual condo and 1031 based on basis I will show?

The owners of 100+ unit complexes are not individuals who will be swayed to sell by a good offer or the need to cut short term losses.

I use the individual stackable units when I have space restrictions.

Most individuals can originate the debt these projects require as well so its not as if your signature is opening the doors to properties these partners couldn't purchase on their own either.  

Last minute, Insula states can't fund to a partnership or individual, needs LLC or Corporation.

Typically you cannot 1031 out of a syndication as the partnership (ownership enttiy) must be the one to do it, not an individual investor.2.

I have a 6-figure land business & am just here to help (no affiliate links).The best land investing program I have seen is Jonathon Haveles with The Land Method and Land Riches Blueprint. 

Also SOP for such is individual property owners will, individually, address total site cleanup in concert with there insurance providers.