Should architects fill in timesheets? An honest answer

Ask a room of architects about timesheets and you will get two answers with nothing in between. One says they are the only way to know what a project costs. The other says they are bureaucracy that makes designers feel like billable units. Both are right, which is why the argument never ends.

What timesheets actually buy you

Exactly one thing: the cost of a project in staff time, with enough resolution to compare it to the fee. Everything else people claim for them — accountability, visibility, discipline — is either a side effect or a management failure being outsourced to a form.

That one thing is not small. Without it, a practice cannot tell a profitable project type from an unprofitable one, cannot price the next job from evidence, and cannot answer whether the client who is "a bit demanding" is costing 5% or 40% more than the others.

What they cost

• —Ten to fifteen minutes a week per person, if the system is good. An hour, if it is not.
• —A real cultural cost in a studio where people take pride in not counting hours
• —Data quality that collapses the moment they are filled in weekly from memory — which is what almost everyone does
• —The temptation to manage by them, which is where the resentment becomes justified

That third point deserves emphasis. A timesheet completed on Friday for the week just gone is a reconstruction, not a record. It is usually accurate to about half a day, which is fine for project costing and useless for anything finer — so do not pretend it is finer.

The lighter version that gets most of the benefit

For a practice under about fifteen people, project ASSIGNMENT plus a rough weekly split gets you most of the way. If the system already knows that three people are on Project A and one is on Project B this week, and their cost is known, you have project cost to within a useful margin without anyone filling in a grid.

It is less precise. It is also actually maintained, which makes it more accurate in practice than a precise instrument nobody completes honestly.

When you genuinely need the full version

• —You bill hourly, and clients audit. Then the timesheet IS the invoice and there is no debate.
• —You are above about twenty-five people, where assignment stops being a good proxy
• —You have multiple offices or outsourced teams whose cost differs
• —You are chasing a specific problem — one project type that keeps losing money and nobody knows why

Whatever you choose, do not choose nothing

The failure mode is not "we picked the wrong instrument". It is a practice that has neither timesheets nor assignment tracking, and therefore prices every new job from instinct and a memory of the last one, which was also priced from instinct.