The owners of these multi-families are public record so you can send them a letter expressing your interest or you may have to dig deeper in most cases to find the owner if the property is owned by LLC. 

I would like to get deeper into the development planning, site selection and land acquisition.

You provide valuable goods or service in exchange fair profit.I go into deeper detail on this concept in the following post.

I plan to go into deeper depth in another post regarding our rehab estimates (we believe $125,000 is needed because it is in bad shape and similar houses on the street are selling or  around $300,000 plus) but I wanted to get thoughts on the best way to finance it.

Plus I have a seven figure RE portfolio now and can only buy so many more properties cash - I guess I need biggerpockets (or is it deeper pockets)?

@Ray Harrell I believe those hazard substance inspections are required to be done by licensed engineers in Washington DC, but yeah, I am pretty certain that I have to dig deeper for better prices at least. 

If it’s not listed then pull up a tax assessment on the property to get a ballpark number of the assessed value.Typically if the purchase price I calculate is within 25% or less of their asking price then I put that property on a list (excel spreadsheet) to do a deeper dive into later. 6) Rinse and repeat for all the listings you can find.7) When I have my new list of properties that passed my first screening criteria, then I evaluate value add opportunities.

If we dive a bit deeper, I look for those properties that need work and have a potential to increase rents and/or reduce expenses.

I’ll have to dig deeper. 

How both to quickly estimate while scrolling online and then what anyone does when they find one and want to look deeper into it.