The new assessments do not affect city real estate bills mailed in December and now falling due. But they will be the basis of the bills sent out next December, payable in early 2014.
Most real estate owners should receive their new valuations by mail in the next week, but for those who do not want to wait, the city posted new market values for about 560,000 city parcels on the website of the city's Office of Property Assessment, www.phila.gov/opa.
The city also provided a Web-based tax calculator at avicalculator.phila.gov.
About 20,000 properties are still being reviewed, and it may take two more weeks before owners are notified of their reassessments, officials said.
The new assessments are subject to individual appeals by property owners who believe their properties are worth less than the city says.
The assessments released Friday hold few surprises, with trendy neighborhoods including Fairmount, University City, Southwest Center City, and South Philadelphia east of Broad Street bearing the greatest brunt of tax increases.
The big winners were neighborhoods subject to less change in recent years - Chestnut Hill, West Oak Lane, Eastwick, Wynnefield, and much of the Northeast.
Richie McKeithen, who was hired in 2010 to oversee the initiative as the Office of Property Assessment's director, said the agency had beefed up its staff to handle telephone calls from citizens, at 215-686-9200, weekdays between 8:30 a.m. and 5:30 p.m.
Property owners will be able to file paperwork seeking a more formal "First Level Review" by the office if they make the request by March 31. If they remain unhappy with the result, they can appeal to the Board of Revision of Taxes, and from there, to the Court of Common Pleas.