However, the best way to get a feel for rental rates compared to values is to review/underwrite properties in the area - only after reviewing/underwriting many will you begin to see a pattern.

Does any one have any leads on lenders who provide loan for groundup constructions and the criteria?

I really only hear mixed reviews, but can't say one way or another personally. 

This was important because I had a lender who would lend at 80%LTV. 

I suggest focusing on building your "Core 4" team—agent, lender (one who can finance both the purchase/rehab and refinance is ideal), contractor, and property manager.

Securing a good lender can greatly accelerate your real estate investing journey.

You'll find that your best talent is already working at another lender or is planning to transition to the broker side. 

Make sure any lease agreement you use complies with Arizona's landlord-tenant laws, including required disclosures (like bed bug information, for example).If you're unsure, consulting with a local real estate attorney to review the agreement can provide peace of mind and ensure you're fully protected.

Is a lender actually quoting you a 90% LTV?

I’m certain there will be some type of moratorium or intervention, but the fact of the matter is the balance sheets of impacted lenders will suffer when obligations are not paid on time.