South End townhouse’s dull facade hides incredible contemporary interior

The six-room, 2,117-square-foot townhouse at 20 Lawrence Street in the South End looks pretty nondescript from the outside: just another aged-though-probably-perfectly-charming property where the neighborhood meets Back Bay.

Step inside, though, and 20 Lawrence looks very au courant. Its contemporary design, which a floating staircase dominates, renders the space airy and sunny (a skylight doesn’t hurt, either).

Plus, a private roof deck crowns the 3-BR, 2.5-BA affair.

Yours through Coldwell Banker for $2,500,000.