Afterward, he contacts me to explain his findings put value considerably below mine to justify a low ball offer while offering to send me his comps, which I accepted.

Could anyone help estimate a ball-park number to turn part of an unfinished basement into a 700 square foot apartment (either a large 1-BR or small 2-BR, one bathroom)?  

If I want to put in a low ball offer you need to be 100% supportive in selling the offer to the sellers agent.I would expect you to be bringing me pocket listings.Your function is not to sell me on a product, as my agent you find properties that fit my criteria and you act as a middle man in the negotiations under my direction.

Since I had a brain annurism and a stroke almost 6 years ago and still cannot walk but I am exercising and am planning on walking again.  

Well, you dropped the ball on this one.  

See if you are in the ball park.

I certainly keep an eye on MANY financial indicators and have my bachelor's degree in accounting (right before most or all states changed CPA exam and thus accounting degrees to a 150 credit endeavor) so I know my #s well, but no one has a crystal ball yet as far as I know!

I want to send mailers to a certain neighborhood near where I live in Centennial but I am wondering if it will be an exercise in futility.

Don't be afraid to low ball the offer.

(3) EXERCISE PATIENCE and wait for a deal to come along that you can structure into a "killer deal".