My 2nd duplex was a new build in Indiana. 

Land appreciates in value, buildings depreciate.

We did build a calculator for this. 

It's all about the plan document, and we use a custom plan document. 

The heights recently underwent change in zoning, so investors/developers are beginning to pay more per lot to build.

@Andrea Evans I think:Worst Part - Lots of pitfalls you can fall into if you do not know what to look for like buying and property taxes double, suburb rental license, buying a property with violations, not understanding the importance of lease documents, etc...Best Part - There is so many opportunistic corners or niches in the city and suburbs that most out of state people do not know about and out of state investors never get to cause they get caught looking at cap rates on the south side and in south burbs. 

As far as the other units most policies have "building and ordinance" clauses which proved some coverage if you have to update to "Code" but if the other units aren't damaged and are still up to code I wouldn't think there would be an extra coverage provided.I urge you to go into the process treating the insurance company as a partner not as their going to screw you no matter what :). 

As we all know, REI is a very powerful tool to building LONG TERM WEALTH.

I see the advantages with DSCR… in that unlike conventional mortgages which have a 10 property cap, and it becomes exponentially harder to purchase each time… DSCR allows you to build a portfolio. 

I consider if this is a person who will be calling me twice a day vs someone who will only email me their signed documents, among other things.