I do work for architects photographing the outside (and interiors) of their projects.
You'll need good light to show the place off to its best potential, think of it like a landscape shoot, good light, an interesting sky etc.
Make sure your verticals stay vertical, buildings looking like they're falling over backwards isn't a good look. You can do this by keeping the camera level, or if you can't avoid angling it up to get everything into shot then either use a tilt/shift lens with some shift to keep it all square, or alternatively shoot very loose to allow you enough space to correct the perspective in post.
Use a CPL to cut reflections on windows and light the house from the inside, a dusk shot for example with the windows lit can make a house look very warm and welcoming, if that's the kind of style you're wanting.
Generally houses look best taken from an angle rather than square on.
Use a tripod, and a cable release, base ISO for optimum quality.
