The age per se is not the issue, but the date of construction. 

The address is 12030 SE Rhone st.

Jacob, I recently worked with a client and he bought a property on SE 84th and lafayette that had an 800 sq ft detached garage.

I'm checking out the viability of tearing down a dilapidated SFR on a lot zoned R1 in SE Portland (Oregon) and am wondering how to estimate the costs of 1.) the demolition, and 1.) the construction of a new fourplex.I'm aware of system development charges and have found documentation online to tally up those costs (including permits), but I'm not sure how to estimate construction materials and labor.

I use a great CPA in SE Tyler.

Great to connect with another local investor, I'm based in Milwaukee and invest in SE WI.

There is nothing special per se about eh word since it is so overused today. 

I bought mine in 2001 and my cash flow number is great. so there is not an average or above average cash flow per se. in core areas such as Bellevue, Queen Anne, capitol hill you get highest rent but you also pay a lot more for the property so your cash flow is negative unless you pay a lot for down payment.

If you have 20, 40, 60+ units I can se you'd have no choice but to have a PM in place.

I have been reading the Rich Dad Investing book, and although I agree with most of what he says, I've found that I'm 200 pages in and I haven't really learned anything new about investing, per se.