Yes, it's possible for an aging mobile home to be worth less than 40k. 

Age of tree of course plays into it.. when you look at for instance turn of the century ( after 1908 ) SF homes built with real 2x 4 redwood with trees that were 500 to 1000 years old its just stunning material..

One gave feedback that they didn't like it was 2-story due to her age and no feedback yet from the other showing.

Both moved in back in 1970s, so they are probably in their 70s of age now...Now, I understand that these tenants are "untouchable" in San Francisco, and your only hope is to wait until their pass (sorry to say that)..

It was a mass hotelization of a place that really had a unique sense of place and not just the city but individual neighborhoods - Treme, Uptown, Garden District, Fauberg Marigny - all very distinct from one another. 

My intention is not to boast but to inspire and share the significant impact that BiggerPockets, especially Joshua Dorkin and Brandon Turner, have had on my life.I first encountered BiggerPockets at 23 while enduring long 14+ hour days as a pipe fitter on hydroelectric dams in northern Manitoba, working 21 days on and 5 days off shift schedules.Although I was earning well for my age and educational background (I barely graduated high school), the job was unfulfilling and almost toxic, mainly because of the dynamics with the associates in the industry.

And also you and others identified benefits I am not realized before now.I'd say to first and foremost make that clear distinction that it's NOT an "investment" that it's you, or anyone, starting a Business. 

Those algorithms compare homes based on general location, size, # of beds/baths, age, etc.

Hey @Zach Knoll,  considerations for property management depend on valuing time versus money, influenced by financial status and age.

Quote from the article: "Texas cases don’t necessarily have a good and distinct and succinct definition of ‘squatter,’” said Adams.