I am looking for handyman to work on - minor electrical/plumbing/bath and kitchen remodel/painting/ installations work.

It depends upon who owns it - solar company that installed it or the home owner  If owned by solar company then no additional value  It may add value as an investment property as it does provide income. 

Durable will outlast carpet, should be the last floor covering you will install.2.

Just finished installing 5” red oak flooring.

You might consider installing water saving features (replace old toilets, install water saving shower heads, etc.) and actually asking the tenants to please try to conserve water (if you have a good relationship with them). 

I am looking for architect to add addition (extra bedroom/bathroom) and redesign the floor plan on the existing dwelling in City Heights.

Watch YouTube videos on the specific thing you want to do, ie flooring or installing a new bathtub.

If you did not authorize the work, he has the right to remove the installed parts and return your system back to the way it was found.

I have the backboard (I prefer cement) installed at the same time as the drywall.

Update @Daniella Sanchez - we just had a structural engineer come out and give us an idea of what work is required, the wall that I need fixed in the basement is bulging out about 3 inches so it either needs a couple of steal beams set up so that it doesn't keep moving OR replace the wall entirely...The bids I'd gotten were mainly for water proofing the basement.. sealing cracks, installing pipes to channel the water elsewhere, etc.