The builder will simply let you know when the house is close to completion so you can then sell your old property and buy the new one using a regular 1031.With an improvement exchange, you've already sold your old property generally. 

For a regular turnover we try to have a lease signed before the previous tenant is out.

Can we just end the lease like other regular tenants?

Is this a neighborhood full of nearly identical properties you can use at comps to determine the value?

To be considered a trade or business for the qualified business income deduction, all of these must be true:Your participation in the rental activity must be regular, continuous, and substantial.You conduct the rental activity with the expectation that you'll make a profit.The rental activity is conducted in the United States or Puerto Rico.Rental activities that are considered trades or businesses include:A real estate professional who materially participates in the activityA rental to a commonly owned trade or businessRental activities that aren't considered trades or businesses include:Rentals for less than fair market value (FMV)A lease agreement in which the tenant pays for real estate taxes, insurance, and maintenanceA vacation home that's rented out and also used as a personal home

-- You will not find this level of service with a regular bank or credit union. 

If you’re talking in city limits you might have a permit problem because they are ridiculously annoying to work with for even regular construction, outside of city limits though, especially outside of allegheny county I assume you’d have an easier go at it. 

So for the sake of simplicity, let's assume that they're identical, given the small difference.

To get the most out of your networking, make it a practice to participate in forum discussions on a regular basis, go to meetups, and interact with other users.By actively participating in the BiggerPockets community and connecting with other investors, you'll be well-positioned to find your first cash-flowing real estate deal in 2024.

Also don't use regular drywall.