What the sun does and does not reach
North of the Tropic of Cancer the sun is always somewhere in the southern half of the sky at solar noon, so a true north-facing wall gets direct light only near sunrise and sunset in the weeks around the summer solstice, and even then at a very shallow grazing angle from the east or west end of the wall. In upstate New York that means a narrow band from roughly mid-May to late July, in the first and last half hour of daylight, and only on the parts of the elevation not shaded by trees or the building next door. For the other nine months of the year, a north elevation is lit entirely by skylight, which is soft, blue, directionless and about three stops down from the sunlit sides.
Turning skylight into a usable frame
Flat light is not automatically bad light. It is excellent for color fidelity and for showing a whole elevation without hot and dark patches, which makes it genuinely good for condition documentation and for comparing new work to old. What it cannot give you is relief — the shadow that shows a recessed joint, a projecting sill or a bowed course. So on a north wall I shoot the overall elevation in skylight and then bring a flash for every close frame where texture or profile matters, placed close to the wall plane to fake a raking angle. Set white balance from a gray card rather than trusting a daylight preset, because open shade under a blue sky runs 7500K or higher and will render buff brick gray if you leave it.
Plan the whole building in two visits
Every elevation has its hour and no single visit covers four sides. East faces want the ninety minutes after sunrise. South faces want mid-morning or mid-afternoon in winter and are hopeless at midday in summer when the sun tracks nearly overhead. West faces want the ninety minutes before sunset. North faces want bright overcast, or a flash. So the workable pattern is an early visit for east and north and a late visit for west and south, on two days if the site allows. I check sunrise and sunset times and the solar azimuth for the actual date rather than assuming, and the National Oceanic and Atmospheric Administration publishes the solar position data that most planning apps are built on top of. A compass reading at the site, taken during the walk-through, is worth more than any app, because buildings are rarely oriented to true north and “the north side” is often thirty degrees off.
Weather is the other half of the plan
Bright overcast is the most underrated condition in facade work. A thin high cloud layer gives you even illumination across every elevation simultaneously, no blown highlights, no blocked shadows, and consistent color from one side of the building to the other. On those days I shoot all four elevations in a single pass and get a set that matches. Clear blue skies look better in one frame and produce a mismatched set across four. Snow cover raises the ambient by a stop or more and bounces light onto the lower part of a north wall, which occasionally makes February the best month of the year to photograph a north elevation in the Hudson Valley.
Writing the plan down
My shoot plan for a building is a table: elevation, compass bearing, target window, backup window, and what I need to carry. It gets sent to the client before the visit so nobody expects the west face at nine in the morning. It also makes clear which frames are documentation and which are promotional, because the two want different weather and often different days — a distinction worth settling early, as it changes everything about how the frames are made and delivered, the way documentation and marketing sets diverge once you look at them side by side.
Frequently asked questions
How long is golden hour in practice? Roughly the first and last hour of sunlight, shorter in midsummer at high latitudes and shorter still where terrain or buildings block the low sun.
Can I simulate raking light on a whole elevation? No. Portable flash covers a panel, not a wall. For a full elevation you either get the hour or you accept flat light.
Does a north elevation need a different white balance than a south one? Yes, usually by 1500K or more on a clear day. Set it from a card on each face rather than once for the building.