The city engineer basically stated that the project would be very disruptive, and would take place over three years.

The tenant has been good with my property so why disrupt a good thing which is the approach I am taking at this time.

Is anyone out there thinking about new technologies and their future effect on the business? I'm specially thinking of 3D printing and the possibility it replaces the home building industry as we know it. I'm reading ...

Disrupting tenants is a common typical concern.  

As @Andrew Syrios mentioned you can get creative with configuration to add more rooms without disrupting the flow of the property too much.  

I think another thing to add to the conversation is how the sharing economy (http://tinyurl.com/bqvb4ln) and millennials' growing disinterest in owning homes/mortgages might allow for the disruption of the traditional financing of single family homes.

There are two big disrupters in retail, the first of course in online sales but the other one on the way is 3D printing.

If you have concerns that a prospective tenant would disrupt the peaceful enjoyment of the downstairs unit, I would think that would be a valid reason to deny the application.

It would be greatly appreciated if you took a few minutes to reply to this email with brief answers to the questions below.1.Do you have a problem acquiring good quality tenants (e.g. a tenant who pays on time, doesn’t break the lease, causes little disruption, etc.)?

I think I could get the house for a low price if I made an offer.The EPA's new law statest that if more than six square feet of drywall, etc. in the interior of the house is disrupted, a contractor with the new EPA lead safe certification needs to do the work.I've looked at the EPA's list of contractors and none of the electricians I've worked with in the past have this cert.