Build Days
How TPTM calculates a lot's Build Days and its delta against the schedule template's target.
Overview
Build Days shows how long a lot has taken to build so far, and how that compares to what its schedule template expects. You'll see it on the community lots table and on the Average Build Time Leaderboard — both use the exact same calculation, so the numbers always agree for the same lot.
What are Build Days?
Build Days is the inclusive calendar-day span from a lot's earliest schedule task start date to its latest schedule task due date, with any days covered by a lot hold subtracted out. Pausing work for a real hold doesn't count against the build — only active work time does.
The delta number
Next to the Build Days count, you'll see a small colored number — the delta (or difference) against the lot's assigned schedule template target:
Green, with a minus sign — the build is running faster than the template's target (ahead of schedule).
Red, with a plus sign — the build is running slower than the template's target (behind schedule).
Gray zero — the build landed exactly on target.
The target itself comes from the lot's assigned schedule template: its explicit target-days setting when one is set, or the calculated duration of its critical-path tasks otherwise.
ℹ️ Note: A schedule template with very few critical-path tasks (for example, an unfinished or placeholder template) can produce a target that's far too small — which shows up as a huge delta. If a lot's delta looks wildly off, check that it's assigned the right schedule template before assuming the build itself is behind.
When you'll see "N/A" or "—"
Both figures can be unavailable, and TPTM shows a dash instead of guessing:
Build Days shows "N/A" when the lot has no schedule tasks yet, or when it's currently on an active hold (its build window is indeterminate until the hold ends).
The delta shows "—" whenever Build Days itself is "N/A", or when the lot has no schedule template assigned, or its template has no usable target duration.