Congratulations on accumulating such an impressive collection. 

[I've been inspired by an old friend of mine whose now accumulated 3 units, starting with a place he got a few years back for $120k in Jersey City that now rents for over $1200/mo.. and has appreciated 50%+]Longer term, I want to build a network of local people with varied skills and to employ some of my underemployed friends in a variety of value generative ways.

(g) Building, grounds, appurtenances and all other areas under the landlord’s control at the time of the commencement of the tenancy in every part clean, sanitary and reasonably free from all accumulations of debris, filth, rubbish, garbage, rodents, insects and vermin.

I will likely pay off some properties as I accumulate more and more for this very reason.

The disclosure specifically says no water leakage, accumulation or dampness as well as no repairs or attempts to control any type of water.   

I understand that I can utilize a 1031 exchange to sell the property and exchange it for the new property now.However, I would like to avoid selling my investment property as I am in the accumulation phase of my investing life.

so my goal is to accumulate rental properties.

There are properties outside Dallas that are much more affordable than the Portland metro region; my point is it is cheaper to accumulate properties not all that far from Dallas, you can start your portfolio there without the need for significant funds.

But if you decide to wait for the sale and be a participant in the tax auction, some counties have online tax sales, you can wipe not only your own mortgage but also the second and any liens that your borrower may have accumulated including but not limited to IRS liens and then move into REO by Tax Sale/Sherrif Deed. 

This take into account accumulated cash flow, final sale price and time value of money.