With phase one of the Avalon mixed-use development staging grand opening ceremonies today, The Alpharetta City Council voted to approve changes to phase two of the project’s master plan.

The council approved developer North American Property’s request for 276 additional for-rent residential units, in addition to the already-approved 250. In return, phase two office and retail space will be reduced.

Assistant City Administrator James Drinkard says the changes also addressed a proposed conference center. In one of 54 conditions attached to the revised master plan, he said, the council approved the developer to either build a 300,000-square-foot-minimum full service hotel with 100 thousand square feet of conference space, or a boutique hotel with at least 30-square-feet of meeting space per hotel room.

The 6-1 vote also approved increasing height of a planned parking garage from six to seven stories.

Phase two will be built on 86 acres of now-undeveloped land between the completed phase one and Ga. 400.