Architecture photography depends on lens choice and timing more than most genres, since a building's lines and lighting can't be fixed after the fact the way some other flaws can.
A wide or tilt-shift lens is close to essential for architecture work, since it's the main tool for controlling the converging vertical lines that make a building look like it's leaning backward in a standard shot. Deciding on lens choice and roughly how you'll handle perspective correction — in-camera or in editing — is worth settling before arriving, not while standing in front of the building.
Light timing matters differently here than in landscape work: rather than sunrise or sunset specifically, what matters is when the sun is positioned to avoid harsh shadows across a facade, which varies by building orientation and needs its own quick check. Interior shots add another layer — access permissions, and whether flash or additional lighting is allowed or needed, are worth confirming in advance rather than discovering on site.
A short checklist covering lens choice, light timing for the specific building's orientation, and access permissions removes most of the surprises that otherwise turn an architecture shoot into repeated site visits.
A few things to plan for