Document normal calling patterns.

Santa Monica would be more like Dunwoody/Druid Hills here.That is true but from judging traffic patterns, in the mornings traffic flows into Santa Monica on the 10 freeway.

Once a tenant gets in there in people see a pattern that somebody live there, that will quickly stop.

The first couple years I heard this, I would try to gently bring him around to the realization that this pattern kept happening and the common denominator was his portfolio and his expectations.

Choose a pattern that won't show stains and find the right vendor with aggressive pricing. 

Our experience shows that those unfamiliar with our neighborhood are less likely to stay very long, and it is harder to find/serve people who move farther away.Then I start phoning landlords and employers, trying to verify both independently.Then I pay for background and credit checks.Applicant is qualified, disqualified, or put in a holding pattern to see if someone better comes along.

(b) Is engaged wholly or in part in the business of selling or exchanging interests or estates in real estate or businesses, including businesses' goodwill, inventory, or fixtures, whether or not the business includes real property, to the extent that a pattern of sales or exchanges is established, whether or not the person owns the real estate or businesses.

If this agreement was not drawn up properly, the title company may feel like the contract does not address the situation.That said, the answer may be buried in the fact pattern... the title company doesn't have an in-house attorney so they may not know what they can legally do. 

It'll last forever :) I like the granite, but I like the BORING granite...not too much pattern, light in color as possible.

It’s probably too early for me to be thinking hard, but if I understand your question and fact pattern correctly if you sold this first property and met the Section 121 exclusion criteria you would not pay taxes on the portion of the property that you used as your primary  residence while for the investment related portion you would if you sold it, unless you did a 1031 exchange for example.