It’s a glorious day for a StreetWalk … or a StreetScene … or taking a walk on the Sidewalk Side. I manage to get in right under the wire before this past week or so of brutally hot late May weather, so I can take my time studying the late-19th and early-20th century houses on the even side of the 3900 block of Chestnut Street. Bounded by Austerlitz on the east and Constantinople streets on the west, I’m in the Touro-Bouligny neighborhood just two blocks away from Magazine Street’s restaurants and shops. Starting at the corner of Chestnut and Austerlitz, I’m greeted by a Craftsman double with blue weatherboards and bright red doors. There’s a front-facing gable on the left-hand side of the roof, balanced by a hipped roof on the right.