I wouldn't depend on their high moral fiber to do the right thing. 

From a construction perspective, I would recommend a Hardiplank siding or its equivalent (fiber cement, etc.) for tenant situations if you are going with traditional siding.

I found this up in Rochester( I live in Corning) and could use some info on the neighborhood.

Ryan,If you can fix your moisture problem with the above mentioned sealants, I think your best bet is to patch the spall in the bottom face of the slab with concrete and then provide some sort of strapping system (steel/carbon fiber) in the short direction of the porch on either side of it.  

@Brandon Kelly There is a REI meeting at Corned beef Wednesdays at 6pm

He wants the carpet replaced because he "doesn't like the color" and he wants a deeper fiber pile. 

At the most a dollar or two a square so at the most a $50 difference at most on a residential house.Myself, I would stick with one of the big three-GAF, CertainTeed,Owens Corning.

I love the Back Bay area, sometimes I ride my  carbon fiber road bike through there.

If you're looking at buy and hold rentals, the cashflow is better in Paradise and Oroville and further afield in Corning and Red Bluff.

We did one where the 1987 OSB they used for flooring was too thin & sagged between the joists.I used the same leveling compound they use for tile work laid a heavy pad & carpeted over the floors.The foyer & hallway we just tiled after the same leveling.If the joists have sagged it's a lot more work ESP if the flooring is the old tongue in groove pine with a subfloor on top.But one of my friends many years ago used Fiber glass shards & resin to fill the voids, but he got it as waste product from the place he worked so it was minimal cost, but it seemed like a lot of work.Good luck