The Weekly Walk-Through

We learned that:

• The Prospect Park Y's chief sees possibilities in the financial crisis.
• A new hedge fund signs a pricey lease in 1095 Avenue of the Americas.
• Luxury condos will replace two West 23rd Street buildings.
• Brooklyn's artists are bracing for the after-effects of the financial crisis.
• Geoffrey Raymond's the artist behind the "Annotated" Wall Street paintings.
• Queens led a citywide August jump in new foreclosures.
• The World Trade Center site will have about $1.7 billion in cost overruns.
• Mark Walsh was the executive behind Lehman's risky real estate investing.
• Manhattan apartment rents dropped more in September.
• The No. 1 train could be closed below Chambers for months.
• The mansion at 7 Sutton Square sold for $32.5 million, well above asking.
• NBC sent around an internal memo about its massive office space search.
• Officials said the market will dictate Larry Silverstein's trade center schedule.
• Two small Hell's Kitchen buildings traded for $36.6 million.
• Manhattan condo sales tumbled year-over-year in the summer.
• Construction union boss Ed Malloy wants a third Bloomberg term.
• The new World Trade Center schedule shows slow going.
• Queens led the city in the number of first-time summer foreclosures.
• New York's real estate heavies are lining up behind a third Bloomberg term.
• Girls school Sacred Heart bought an East 91st building for $23 million.
• Upper East Side and West Side apartment rents have been flat for 12 months.
• A Williamsburg condo has sales pitched to Sarah Palin.