You can remotely monitor the property and address any potential issues quickly.Automated tasks: Smart lights can be programmed to turn on/off automatically, saving energy and adding a touch of security by creating the illusion of occupancy when the property is vacant.Consider using a smart home hub like Google Home or Amazon Echo.

You won't sell it if you didn't get permits as most municipalities require you to get a CO or the buyers will do an OPRA request and see you didn't pull permits.If you did electrical or plumbing without a permit, the walls will need to be opened up to expose the work.You won't be ready to sell in 3 months.

.- Both boilers installed new 2017- Both electric panels upgraded 2015  - Shared Backyard access for bottom 2 units- No Parking, No Central Air- House built before 1900- Roof about 20Yrs old- Assume Fed cuts rate at least .25 point later this year Any thoughts would be appreciated.

They also said i needed to account for common space electricity?

Some genius politician's think oh hey, while we got all this going on, I know, what a great time to create even MORE restrictions on energy, manufacturing logistics, yeah, let's do that....  

This particular unit is an ADU and utilizes my electric/sewer/water so they pay portion....

I assume these areas have strict zoning, permitting, and design codes, along with requiring state licensed contractors to perform electrical, plumbing, and HVAC which would increase costs.

But with 4 kids in their teens/twenties now, seems like that money would be far better used if one of them has entrepenurial ideas (and energy and time). 

Once you find one good contractor they typically know other "rock stars" in other trades (electric, plumbing, etc...) that you will also need.

New plumbing, electrical, and mechanical behind the walls?