Dscr will be useful in the future for fixer uppers and unique buys. 

If you opened the exchange with the intent to hold the property for investment, and then in the future circumstance changed which caused you to reconsider the use of the replacement property and convert it to personal use, then a period of time less than two years might be reasonable.  

(This is a theoretical future).  

You would then have two loans, one on your home and one on the refi to access the equity on the investment home.Why not just use the refi cash out from your home loan for future deals? 

We are looking to building some fourplexes in the near future in the area - when you say expand your portfolio - what are you looking for ?

Quote from @Rose White: When is the best time to ask your new / possible future tenant for a background check?

Best of luck with your 6-unit deal and future investments!

Platforms like BiggerPockets, local REI meetups, and Facebook groups can connect you with investors seeking opportunities.Joint Venture Partnerships: Consider partnering with a seasoned developer or investor who can provide the capital while you contribute your vision and operational effort.Hard Money Loans: If you’ve identified a property, some hard money lenders may fund the purchase and development based on the future value (ARV) of the project.Crowdfunding Platforms: Sites like Fundrise, Groundfloor, and RealtyMogul cater to real estate developments and could be a great way to gather capital.Seller Financing: If the land seller is open to it, negotiate terms to finance the purchase directly with them.2.

I think in the future you'll see businesses supplying this type of accommodation for their workers. 

Rock that for about 12 months and add some equity and then you could refi out to conventional so as you pay it down in the future the mortgage insurance will drop off.