I can't tell you how many times I've hired a new assistant, gone on location and had him or her start setting up lights willy-nilly once we get to a location. I don't always want to set up a light let alone many lights... So many scenes are just better without extra lights. I find that more and more situations just call for a judicious dose of fill in lighting, limited to very small areas. A color balanced LED panel or just a tiny squirt of flash.
In the case above I was perfectly happy to put my camera on a tripod, compose and shoot. If you need to stretch out your day then, by all means, start grabbing the light stands and sandbags. But if you bid your job correctly and you're getting paid by the use or by the image a quick test shot and some good location juggling might be just the key to getting what you want. Quickly and with no fuss.
Camera: Canon 5D2. Lens Zeiss 85mm 1.4. Lights? Whatever the architect spec'd.