Control panel, base station and a few motion detectors. 

We'll get ahold of Centerpoint this week to get the gas meter moved and the electrician will start later in the week demo'ing out wiring and starting to pull new for the new layout as well as we are moving the panel.

Almost certainly you will need a new main panel change if it hasn't been updated but no need to rewire barring state regs.

I have also had some big repairs like electric panel upgrades to accommodate the higher number and usage of electrical devices.

I could be wrong on this, but to my understanding if the work does not affect the square footage of the house nor the structural components, and is simply replacing a "like-for-like" type product (swapping out an old light fixture for a new one, but the are on the same circuit and panel,  permits would not be required. 

I recently spoke on a panel of Keller Williams Mega Agents and one of the other speaks summed up real estate sales like this: "Being a real estate agent is extremely easy but most agents make it extremely difficult.

.)- price/sq ft is still relatively much cheaper than other comparable cities- lowest vacancy rate in Columbus history- one of the panel members who spoke at a housing development I went to named Bob Schottenstein (developer who has built over 150,000 homes) stated Intel will do to Columbus what Disney did to Orlando 

Since that time; they've done quite a bit work and replaced (or are still in the process of replacing) most of the big ticket items like termite work, the electric panels,  all appliances, flooring, etc. 

As for Electrical, aluminum wiring is a red flag not seeing it can't be used but it has greater chances of malfunctioning and causing a fire vs copper(aluminum was used more in the Vietnam era but this is just precaution), make sure all electrical work is grounded (you can tell if the receptacle are 2 prong and not 3), Service and Panel size would also need to be adequate if you plan on adding more rooms and circuits(I recommend at least 150 Amps).

No more leaks and the light that comes through the new panels is amazing.