Do you usually use official sources such as court documents, or go through the white pages?  

I never cared to make it official, because I was only doing my own houses.

I believe that we will be officially in a recession by the end of September 2020.

My fiancé and I have now officially paid off our debts and can’t wait to really deep dive into real estate investing, starting with a house hack for our first deal.

It is not officially a CRM system, but it works as well as any of the fancy systems I have looked into.

I try to get a written acknowledgment that they are officially vacated.

I made it my main hustle, and made my official job my side hustle. 

Fortunately the property has appreciated quite nicely by about 30% in the last 4 years with the neighborhood officially gentrified.

I have not officially joined a REIA here but pre-corona there were tons of networking events every week held by the various real estate groups in the area.

This seems to be referring to what is often called a "Registered Agent", or someone official in the state who should always be serve-able in the event a process, notice, order, or other legal item needs to be served.For example, many states require every LLC to have a registered agent, which is commonly the attorney that filed the company's formation paperwork.