Also metal railings can be fairly expensive as well since they need to be fabricated at shop then installed. 

I am also considering replacing w/ a pre-fabricated/manufactured 4 unit building. 

I am also considering replacing w/ a pre-fabricated/manufactured 4 unit building.

Your landlord has fabricated the $250 amount.

Grated, I would not dream of fabricating a defect. 

And I hate to get political on this wonderful forum, but the idea was fabricated by paranoids and liberals who hate progress and want to end all technology forever so that we can resume our "natural state" of walking around on our knuckles naked like our ape-ish predecesors (or adam and eve).

I have a core group of close friends that are GCs, fabricators, etc. so I have a great knowledge pool to fall back on.    

And, single family homes and most multi units are not zoned for hotels (which technically AirBnB is) so renting a room or apartment for vacation rental is illegal.Further to the housing problem for people who actually live here, a community full of vacation rentals changes the fabric of the neighborhood, breaks down the continuity of community - who is your neighbor??? 

I love seeing innovation and change, and I think there's a lot of potential in smart, sustainable housing and next-generation fabrication methods.

The trap not looking for the unseen effects would lead us to the same thinking that automated textile factories would put out of a job everyone who used to weave fabric by hand.