Some
useful links:

Prudential
California's Listing Watch tool
Get regular e-mail notifications of all new
listings in Northern California that meet your criteria. Not just
Prudential's listings, but listings from all the major Northern California
Multiple Listing Services.
Prudential California home page
San
Francisco Property Tax Information & On-line payment
Articles
on Condo Conversion and TICs in San Francisco
By
the law firm of Goldstein, Gellman, Melbostad, Gibson & Harris, LLP