I'm starting to generate some revenue from a few deals and want to direct some funds into my direct mail campaign.

It might be a good way to catch some low hanging fruit, but it really will stigmatize your business in those markets that you run your campaign.

I am starting a direct mail campaign and I had some questions regarding narrowing down the lists.

Some can be drip campaigns that last for many months.

Sometimes commercial loans will have a clause that restricts subordinate lending, which is what that would be.  

We have 3 different campaigns going.

I forgot to mention I am conducting my campaign in the Lacey and Olympia Washington Area.

One is starting to see a dramatic rise in rankings after only 20 days but it usually takes a little longer than that and his Adwords PPC campaign isn't as costly as mine was when I got started advertising in this niche.

To counteract this trend, some HOA by-laws often establish very restrictive rules to limit non-owner occupants (renters).  

I run my business under the umbrella of Keller Williams with few restrictions.