Like many of the buildings that figured prominently in the Watergate scandal — the office building, the Howard Johnson’s across the street — this Dupont Circle condo where Bob Woodward lived when he was an up-and-coming police reporter for The Washington Post has undergone a transformation.

The 450-square-foot unit, which was turned into a one-bedroom condo from a studio within the past decade, has gone on the market for $349,000.

The condo’s balcony played a role in Woodward’s reporting on the story. Whenever Woodward wanted to meet with Mark Felt, a.k.a. Deep Throat, he placed a flag in the flower pot on the balcony. The lobby where his newspaper was delivered daily also figured prominently.

“Felt said that if he had something for me, he could get me a message,” Woodward wrote in his book, “The Secret Man: The Story of Watergate’s Deep Throat.” “He quizzed me about my daily routine, what came to my apartment, the mailbox, etc. The Post was delivered outside my apartment door. I had a subscription to The New York Times. … The copies were left in the lobby with the apartment number. Mine was No. 617, and it was written clearly on the outside of each paper in marker pen.”

Whenever Felt wanted to meet with Woodward, he circled page 20 in the newspaper and drew the hands of a clock to indicate the time of the meeting.

When Woodward lived at the Webster House, it was one of the newer condo buildings in the city. Built in 1968, the nine-story, 175-unit building has been upgraded with one of the first solar water-heating systems in the District. The pet-friendly building has a front desk and a rooftop swimming pool. The monthly condo fee is $478.

The condo isn’t expected to remain on the market long. Offers are due today by 4 p.m.

Listing agents: Meredith Margolis and Molly Peter, Compass