@Dusty Bowling in regards to insurance, if each building is on it's own parcel, you should be able to use the same insurance carriers you have been using. 

Some carriers may have slightly different guidelines.

They're all tied together, with Valassis handing urban markets and the east, Mspark handling "rural" markets and the Midwest, and Mailbox Merchant handling the West Coast, including its urban centers.I'm at Mspark, so each company will have a couple nuances specific to them, but if you wanted to run postcards, for example, you could do so to a blanket zip code, portions of zip codes, or even carrier routes, for $0.20 a mailbox.

with email marketing for example, a good open rate is 20%. with text, the average open rate is 90% or higher. everyone reads every text they get. that extra 10% is due to some phone carriers having a “spam text” folder. i personally have never seen this, but i do see many of my texts not being delivered due to the phone carriers’ spam folders. anywho, people rarely answer the phone, and almost always listen to voicemails. so i feel texts & voicemail drops would probably have about the same efficacy. texts might beat VM drops because they could be perceived to be more authentic (depending on how they’re written), meaning more responses. you’d also have to consider your demographic. will you know that the #s on the list are cell phones vs landlines?

This is a list of words that will get you flagged by the carriers.

It depends on the state as to what carriers are available.Which state are you in?

See here for the most up to date info I have found:  If you haven’t been following the news around SMS (text message) marketing and cold calling, there is some serious legislation being passed, and new protocols being implemented by carriers that you need to be aware of.If you do not take time to educate yourself, you could be facing a massive drop in response rate (best case) and very large fines and lawsuits (worst case).In this article, you will find everything you need to know to stay compliant while navigating the new rules of outbound marketing as a real estate investor.The Ultimate Guide to TCPA Compliance and A2P 10DLC Regulations 

Any recommendations for insurance carrier for 11 plex in Westwood Houston 

I will send you the carriers my Sioux City office has been using.  

Most of our Insurance Carriers will insure a rented Condo Unit on a Dwelling/Fire policy (some companies call them a Landlord policy).