Any members who want to invest can do so (minimum $5K), and we form a joint venture LLC as the singular investor (the limited partner) in that syndication deal.

You are likely going to be personally liable and jointly. 

This will be a Joint Venture with the builder.

The standard deduction is currently 14,600, or 29,200 if married filing jointly. 

Explore partnerships or joint ventures with other investors to pool resources and mitigate financial risks.Good luck!

If you both qualify for traditional financing you could do an operating agreement/joint venture agreement and open joint accounts in a similar fashion.

(up to $250,000 for individuals or $500,000 for married couples filing jointly) Consult your CPA :)

You could structure a joint venture agreement but make sure you lay out the following: - Purpose of the Venture- Contributions- Ownership and Profit Sharing- Decision-Making- Management- Duration and Termination- Liability and Risk Allocation

This would be more of a joint venture .

If you file jointly then a spouse's material participation should count.