They say “he who lives in glass houses should never throw stones.” Swizz Beats and Alicia Keys should never even look at another rock for the rest of their lives because their $17.95 million SoHo penthouse duplex in NYC is surrounded by glass! The 5 bedroom, 4 full and 4 half bathroom penthouse went back on the market just two short years after Swizz and Alicia bought the house. They originally paid $12,750,000 for the duplex penthouse, but the price is still well justified because when Lenny Kravitz previously owned the apartment, the original listing prices ranged between $19,500,000 and $12,500,000. Listing information shows the duplex penthouse, which has a third level roof terrace, measures in at a mansion-sized 6,167 square feet and contains 4-5 bedrooms. Monthly maintenance and common charges for the penthouse that sits atop a full-service boutique building—once home to Hole rocker and Twitter princess Courtney Love—run a hefty-hefty-hefty $11,564 per month. Listing information also indicates the penthouse property comes with separate and private wine cellar and storage/dressing rooms, presumably located somewhere in the bowels of the red-brick and cast iron building. The entire place is filled with artwork, has a ridiculous amount of clean open space and as mentioned earlier, a whole lot of glass. We don’t know what their monthly Windex budget is, but we do know that the house is beautiful. Take a look at a few pictures from Swizz Beats & Alicia Keys’ $17.95 milli penthouse duplex in the gallery below..