Public accommodations and commercial facilities must follow the requirements of the 2010 Standards, including both the Title III regulations at 28 CFR part 36, subpart D; and the 2004 ADAAG at 36 CFR part 1191, appendices B and D. In Texas the 2012 Texas Accessibility Standards that include necessary clarifications must also be followed. 

The compliance date for the 2010 Standards for new construction and alterations is determined by:

• the date the last application for a building permit or permit extension is certified to be complete by a State, county, or local government;
  
• the date the last application for a building permit or permit extension is received by a State, county, or local government, where the government does not certify the completion of applications; or 
• the start of physical construction or alteration, if no permit is required. 

If that date is on or after March 15, 2012, then new construction and alterations must comply with the 2010 Standards.  If that date is on or after September 15, 2010, and before March 15, 2012, then new construction and alterations must comply with either the 1991 or the 2010 Standards.