All of the following have been replaced in the last few years: siding, windows, roof, gutters w/ good screens, HVAC system (AC and furnace both), added insulation in attic, and landscaped.

You may be able to go right over the existing wall, but that will require some adjustments around baseboard/window trim, crown mouldings, and electrical outlets and switches.

There are a few problems with it... mainly that it is outdated - The home was built in 1930 and has no AC, windows are cracked and old, the light fixtures were barely there and the floors (hardwood and linoleum) were a mess.Now it's essential that I mention that this is an out of state purchase.

It is an incentive for the optionee to wait.The other remedy is using a "European Option" (nothing to do with Europe) which requires the optionee to exercise the option at the end of the term, providing a window for financing. 

It is just all the windows are glass block with a space in the middle for a small screened window.  

The scope of work necessary would most likely be two full bathroom gut renovations, a full kitchen rehab that will probably involve sone drywalling and ceiling work, new windows, and possibly some minor wall removal/knock down.

Plumber suggested that I completely remove all the gas outlets since gas space heaters are dangerous and the window units have a heat option which is fine for our "winters" in south Texas.If I do away with the gas water heater and the gas outlets that would only leave gas for the stove.

If you have the chance to add a bedroom or bathroom....I'd say go for it......Most homes increase in value when you add a Bedroom or Bath.....Here's my list of priority renovations when updating/rehabbing1) Kitchen and Bathrooms2) Bedrooms3) Living spaces (Living room, dinning room, den)4) Curb Appeal / Landscaping5) Windows.....yes believe it or not windows are a big plus 6) Upgrading or new flooring 7) Finishing a basementThose are the big ones.Don't forget to add your costs to the ARV to get your NET ARV......I use 10% to be safe, others use 7-8%.....so if the ARV is $300K......use $290 as the Net ARV. 

Windows?  

page=1#p1565424  Wish it was another day, I'm doing a project on that weekend, 58 retrofit windows for San Luis Obispo County Agricultural Department.