Los Angeles City Planning Director Gail Goldberg has resigned, the mayor’s office announced Wednesday.

Goldberg’s official retirement date is Aug. 27, but she will be out on medical leave starting July 16. There was no announcement from the mayor’s office on an interim replacement for Goldberg or a search for a new general manager.

Goldberg, 66, was recruited in 2006 by Mayor Antonio Villaraigosa to lead L.A.’s planning department and to bring more transit-oriented development to the city. She has led overhauls of more than a dozen of the city’s 35 community plans and sought to make the department more responsive to both community and developer concerns.

In her resignation letter, submitted Wednesday morning, Goldberg cited accomplishments in updating community plans, improving department efficiency and preserving some industrial land for future jobs.

But Goldberg has come under attack from homeowner activists for approving too many developments. Also, developers said the department stalls development plans.

In a statement Wednesday, Villaraigosa thanked Goldberg for her service to the city. “Her tenure as head of our City’s Planning Department was defined by the integrity that has become the hallmark of her career in planning,” he said.