A one-bedroom, one-bath condo at 177 Townsend St. in South of Market is listed for sale for $599,000. Richerson Farnsworth of Pacific Union International is the listing agent for the condo.

Unit #836 sold for $645,000 in July 2007. It is one of 198 units at the 170 Off Third development, which was built in 2007.

The 755-square-foot penthouse has access to many amenities, including a clubhouse, fitness center, pool, theater room and wine room. The development also has a spa and barbecue area and it includes one indoor parking spot.

According to BlockShopper.com, the latest sale at the 170 Off Third development was Unit #409, which sold for $515,000 in Sept. 2009.

Mr. Farnsworth has more than 15 years of real estate experience in San Francisco. He has completed transactions in almost every neighborhood in the city and he has extensive experience with probate and trust sales.

Address: 177 Townsend Street, Unit: 836