If you build out from scratch (which rarely makes financial sense because you have to abide by new building codes with fire sprinklers and solar panels), you may want to check with an attorney because I haven't been able to get a clear answer if you can do that with existing tenants because of yard space.

I added new flooring , Paint new electrical panel , changed all plumbing fixtures, and a new bathroom downstairs and put in a brand new kitchen.

If I included utilities, probably ~$800/mo or $3,200 gross.My main concern with it is that it has one furnace to heat the entire place, one electrical panel, one water meter, etc.

I actually met you at your plant this summer when I picked up a trailer load of panels for a project of mine. 

It's fairly common although I would go ahead and cover it with something else such as wall paper or those fake brick/wood panelling boards they sell at Menards

For example in California we are required to add solar panels. 

Remember once you open those walls everything has to come up to code, that will for sure mean all new electric and panel, alot of new plumbing and HVAC and can mean little more annoying things like framing not being sufficient. 

I am also a Certified Eco-Green Energy Star Preferred Agent specializing in Green Retro fits and new Smart Panel factory stick built homes.

Unfortunately you may have to open walls to determine the issue, may not be behind the access panel.

Hi,We own a few single-family properties in the Phoenix area and they are all managed by the same property manager for many years now.Since these houses aged a little bit and have normal wear and tear it's time to make some larger repairs, such as replacing rotted siding panels, fascia/soffit boards,  support columns in the patio, fixture replacements etc...For years our property manager pretty much handled all of this, but it seems to me that the quotes we've been getting recently are overblown.