You can sell your primary residence and avoid paying capital gains taxes on the first $250,000 if your tax-filing status is single, and up to $500,000 if married filing jointly.

My layman's knowledge that is not tax advice: You can exclude up to $250,000 of the gain from capital gains tax if you are filing single and up to $500,000 if you are married filing jointly, because you lived in it 2 out of the past 5 years.

Does anyone have a joint venture agreement they would be willing to share with me?

All of my rents are collected via ACH.

For a married couple filing jointly, only one spouse has to meet the ownership requirement.Eligibility Step 3—ResidenceDetermine whether you meet the residence requirement.

Use a lease where they are joint and severably liable, and make sure they understand it.

Congratulations on your purchase.we have a STR in joint partnership and  we manage our use consulting with each other.

If your wife spends more than nine months in CA you are jointly a CA resident unless you can show a separation agreement and file accordingly.

would you want them to invest in something you want to own with them jointly?

So the easiest two options are per project joint venture and simple funding (lending) for projects.