TexasCHLforum.com

Here is a source for resident information:
http://www.taa.org/renterinfo/faqs/" onclick="window.open(this.href);return false;

The information below is from that site.

Can the manager enter my apartment when I'm not at home?
There are a number of reasons why property managers or maintenance staff may need to enter your apartment, and it could be very inconvenient for you if you always had to be home and available when these circumstances arose. If you signed a TAA Lease Contract, you've given permission to the apartment management and/or maintenance personnel to enter your apartment when you are not there for:

responding to your request
making repairs or replacements
estimating repair or refurbishing costs
performing pest control or doing preventive maintenance
changing filters
testing or replacing smoke detector batteries
retrieving unreturned tools, equipment, or appliances
preventing waste of utilities
exercising a contractual lien (removing your non-exempt belongings if you haven't paid the rent)
leaving notices
delivering, installing, reconnecting, or replacing appliances, furniture, equipment, or security devices
removing or rekeying unauthorized security devices
removing unauthorized window coverings
stopping excessive noise
removing health or safety hazards (including hazardous materials), or items prohibited under our rules
removing perishable foodstuffs if your electricity is disconnected
removing unauthorized animals
cutting off electricity according to statute
retrieving property owned or leased by former residents
inspecting when immediate danger to person or property is reasonably suspected
allowing persons to enter as you authorized in your rental application (if you die, are incarcerated, etc.)
allowing entry by a law officer with a search or arrest warrant, or in hot pursuit
showing apartment to prospective residents (after move-out or vacate notice has been given)
showing apartment to government inspectors, fire marshals, lenders, appraisers, contractors, prospective buyers, or insurance agents
Under the TAA lease, the management must leave notice of entry inside your apartment indicating that a management representative entered the apartment, and why he or she was there.

If you are at home when the management wishes to enter the apartment for any reasonable reason, the management must ask to enter peacefully and at reasonable times.