It took an extra three weeks, but City Hall is now seeking developers for the projected $350 million transformation of its Boulevard property into apartments, offices and retail space.

Initially set to go out July 14, officials began advertising last Thursday for companies to undertake the overhaul of the 61 acres where The Diamond baseball stadium and the Arthur Ashe Jr. Athletic Center now stand.

Would-be developers must provide their qualifications by Oct. 30, according to the post on the city’s procurement site.

The city will review the information and then will “shortlist a select group of best qualified developers based on the responses.”

The select group would then receive a request for proposals in December or January. Based on the responses that would be due in February, the city would select a master developer, according to the posting.

Whether that schedule will be adhered to remains to be seen given that a new mayor and a new Richmond City Council by then will be in charge of a project that already has proved costly, but from which the city is hoping for big returns.

Richmond taxpayers already have poured in $19 million to relocate city and school operations from the site, demolish old buildings and clean up environmental problems.

Still, there are plenty of unanswered questions.

One big question is whether there will be a new stadium to replace The Diamond, the current home of the Richmond Flying Squirrels baseball team.

The team, the city and Virginia Commonwealth University, whose baseball team also uses The Diamond, are seeking to locate to another site in the area. All of the parties are currently mum about the talks and negotiations over property.

A second unanswered question is what the city will do to replace the Ashe Center, the school system’s aging convocation and sports center. So far, the city has not provided any proposals to build a new center elsewhere.