It's a 1978 mobile home and insulation is very bad, so I feel somewhat responsible to offer a more cost effective heating option.

I just put a $14k dual HVAC system in a split-level home because it was the only way to really effective control the climate...I think there is a balance somewhere, though.

I tried a lot of paint types, techniques, and colors to get the granite marbling sort of effect.

My goal of joining this forum is to learn and understand how does the Real Estate business works and what are the different and effective ways of finding good deals. 

Search BP for "blanket mortgage release fee".If any are subject to an existing mortgage, do those separately issues that could arise don't need to effect your entire deal.Read the seller financing posts, get a "loan servicer" search that and read.

Do you experienced marketers have any advice on whether filtering by tax delinquent homes is even that much more effective?  

Hard to find foreclosures that are cost effective to rehab. 

It will impact Realtor.com, but I wonder what the knock-on effect to Realtors will be.

Usually depreciation is one of the most valuable tax savings effects of rental properties when you ordinarilly own them but how is that handled with a self-directed IRA? 

I feel like depending on what the plans are for that land will effect the contract price.