My first overture to the representatives is a targeted introductory letter, expressing a potential intent to purchase the house and asking the representatives to call me back.  

That is unless you have a management company that eats, sleeps and breaths property management and lives on site. or the property is in a transitioning area that is moving from c to b, or b to a and better paying residents are moving in. 

Be up front with the landlord to your intent.

Marketing the property for sale prior to owning it would be acting as an unlicensed broker. 4735.01 Real estate broker definitions.As used in thischapter:(A) "Real estate broker" includes any person, partnership, association, limited liability company, limited liability partnership, or corporation, foreign or domestic, who for another, whether pursuant to a power of attorney or otherwise, and who for a fee, commission, or other valuable consideration, or with the intention, or in the expectation, or upon the promise of receiving or collecting a fee, commission, or other valuable consideration does any of the following: (1) Sells, exchanges, purchases, rents, or leases, or negotiates the sale, exchange, purchase, rental, or leasing of any real estate; (2) Offers, attempts, or agrees to negotiate the sale, exchange, purchase, rental, or leasing of any real estate; (3) Lists, or offers, attempts, or agrees to list, or auctions, or offers, attempts, or agrees to auction, any real estate; (4) Buys or offers to buy, sells or offers to sell, or otherwise deals in options on real estate;   

I still don't get your intention.

This is one of those times where you leave logic and common sense behind and instead focus on what they want you to say.The practice tests are intentionally harder than the real deal.  

My intentions are buy and hold and rent it out. 

My intent was to flip it, but years later I'm paying $200 a month on taxes and resort membership on 10 acres that I can't get rid of.  

You will also get better answers with more info and by going to plumbing specific chat rooms if you are intent on fixing this yourself.

Officially, “the Lead Law requires the removal or covering of lead paint hazards in homes built before 1978 where any children under six live.”The law, as is true of most laws, certainly had the best intentions.