The first of the Market Street warehouses is taking shape. As usual, I'm scratchbuilding the model in styrene. Scratchbuilding basic square buildings is pretty easy, and styrene is fun to work with because I can pretty much build as fast as I can cut, and don't need to worry about painting til after assembly.
Like most of my styrene models, this one's built out of the usual small number of "staple" styrene shapes; I keep a supply of basic styrene for anything I'm building up from scratch, and only buy sheet styrene for siding and Grandt Line windows and doors when I figure out a particular project to make.
My staples for plastic are 12x12" HO (1/8" square) styrene rod for bracing, 2x12 strip for large boards (in this case for the sheathing on the loading dock), 2x6 strip for cross-bracing and railings on the stairway, 4x4 rod for posts for the stairway, 1/16" sheet styrene for the core of the object, and any handy width of scribed siding for large wood floors such as the loading dock and stair platform. I normally don't like the very thin (1" scale) plastic, but I use 1x4 strips and scribed sheet to make the baggage doors from scratch. Other than the staples, this model took a couple packs of board and batten siding (suitably weathered with a brass brush and occasional removed boards), and some Grandt Line doors and windows from a large stash. A while back, I bought the Grandt Line window and door assortment so I'd always have some window and door castings available; I restock the particular pieces I use, but if I'm not picky on a project, I can usually find something in the box to use. I also keep one or two of the Central Valley stair sets on hand so I don't have to fabricate those from scratch.
All the staples make for about $20 in plastic, and I'm good about buying additional plastic whenever I visit the local hobby shop. The only item not in the hobby shop is the 1/16" white styrene sheet, which I buy from Tap Plastics, our local plastics supplier, for around $1.50/square foot. I'll buy a few 1' x 4' sheets for backdrops, and any extra gets borrowed for other projects.
This model represents about three evenings of work at this point - most of the effort was just in deciding what to build, and feeling familiar enough with the various warehouses to be able to guess at dimensions.