Usually if there is a plumbing or electric issue, it falls on the tenants.  

But the majority of people purchase "average" real estate properties and does not reflect the an increase in HOA, insurance, gas, electric, taxes, management and maintenance.

This means that the electrical is likely made from copper and is grounded.Running new ground wires and fishing wires behind walls can be very expensive, so having electrical that is similar to today's code is a plusProperties in this era also had ductwork - meaning forced air heating and cooling.

It would be installed in the middle of the porch, as circled in the below photo.Per my handyman, "All materials and labor to build deck section and install hot tub supplied by you including water, drain and electric hook up.

., plumbing, electrical, roofing) and try and estimate the costs for each. 

House is in decent condition, some relatively new cosmetic updates, and electrical updates.

We just put in a new well, water pump, and electric panel.

How do buyers feel about not having the water and electrical turned on when checking out the property?  

Ft ranch home with new appliances ( Refrigerator, dishwasher, stove(electric or gas), washer/dryer, microwave etc and contemplating whether it requires and electrical upgrade from 100 amps to 150/200 amps.Currently the HVAC system installed for central heating/cooling is  15 amps)and there is gas water heater.Do you anyone know if this needs to a mandatory upgrade or any recommendations around the same and what it can cost to upgrade electric panel to 150 amps/200 amps?

You're asking someone to spend a lot of time and energy to share what they've spent years - maybe decades - learning and developing.