I haven't rehabbed anything (yet), but one advice that stuck with me from listening to one of the BP podcasts was to look for materials/fixtures that you would use on all your rehabs.

The medical center and houses near UTSA are probably fine it's just not my cup of tea.

@Manolo D. makes a very good point, if you're looking to rehab into the high-end market, it's important not to skimp on materials or fixtures.

new light fixtures, and ceiling fans through out the house,  (master electrician in the family). 

If the association is responsible for exterior of building up to wall cavities of each unit, including mechanicals I would assume that worst case senario would involve all sheetrock, finish work, fixtures, paint and appliances.

I the case of a pool, the answer is no.To answer specifically what the value add is in dollars for each item is impossible, however, the best place to spend money to improve value above and beyond the costs of the value add are in kitchens, baths, cosmetics (paint, carpet/tile, cabinets, electrical and plumbing fixtures) and curb appeal (landscaping).Other value adds can be moving and adding walls for better floor plans, adding square footage, adding beds/baths, adding amenities.

Purely cosmetic (paint, flooring, light fixtures, plumbing fixtures, cabinets, countertops, appliances, etc) is 2-3 weeks. 

It was built in 2007 and only needed paint, cleaning and some fixtures.  

In some jurisdictions, changing a faucet or light fixture is significant.  

I'll offer you the same deal I offered the other 10 post wonder on BP:Take a broker's license class to see if this is your "cup of tea".