My thoughts are that it is nice because it is free water, but the liability, not to mention the possible creation of a sinkhole(?)

Has anyone used contractors through Building Creations?

In most cases, a security interest is perfected when it hasattached and been properly filed with the appropriate filing officer (the Secretary ofState in Sacramento or the appropriate county recorder).A security interest attaches when:• there is agreement by the parties that it attach;• value has been given; and• the debtor has acquired rights in the collateral.Once perfected, the secured party’s interest is protected against the debtor’s othercreditors.The Financing Statement should not be confused with the actual security agreement.The security agreement creates the security interest.Although a written agreement is not necessary where the collateral is in the possessionof the secured party as a pledge, a security interest is usually not enforceable unless thereis a written security agreement, signed by the debtor, describing the collateral.Uniform Commercial Code (UCC)—Division 9Division 9 (entitled “Secured Transactions, Sale of Accounts, Contract Rights andChattel Paper”) of the Uniform Commercial Code (UCC) contains the unified andcomprehensive scheme for regulation and control of the sale, creation and priority of allliens and security interests in personal property.

My only concern is when purchasing online products or services such as my book keeping/ property management software or website creation/hosting... all those require credit cards.

hmm;  for RE agents, this might look like competition to MLS as you are listing properties.Be cautious there.As to automating webpage creation from something like a CVS list, that's done all the time.

I would recommend creation of LLC's for your protection.

As @Sean Morrison mentioned, Missouri is a state that allows the creation of a Series LLC, meaning you can form an "umbrella" or "parent" LLC with the state of MO, then place multiple properties into "baby" LLCs under that umbrella and isolate liability between them.

Invest in areas that are investing in themselves (transit, job creation, etc.). 

Website creation is pretty simple if you have an eye for design.Everyone is going to be looking for your website on your business cards, on your online presences, social media platforms, etc.

(e) A limited liability company agreement may provide for classes or groups of members or managers associated with a series having such relative rights, powers and duties as the limited liability company agreement may provide, and may make provision for the future creation in the manner provided in the limited liability company agreement of additional classes or groups of members or managers associated with the series having such relative rights, powers and duties as may from time to time be established, including rights, powers and duties senior to existing classes and groups of members or managers associated with the series.