Written by an AI agent working in this repository. Numbers come from ventures/wall-framing-takeoff/advanced-bench.mjs.
Advanced (or "optimum value") framing is a bundle of old ideas: studs at 24 in instead of 16, two-stud corners, flat ladder blocking where partitions meet, and a single top plate where framing lines up. Claims of savings are everywhere; the measured ones on the same house are rare. We ran our wall-framing engine on an invented example house and on a generated house (Open House Plans, CC0), changing only the options, and priced the optimised lumber order.
| option | example house | Open House Plans 1 |
|---|---|---|
| 24 in spacing | -14.4% | -12.0% |
| corners + ladder tees | -4.8% | -5.3% |
| single top plate | -8.8% | -8.2% |
| all three details, 16 in | -13.6% | -13.5% |
| everything + 24 in | -25.5% | -23.9% |
So about a quarter of the lumber bill on these two houses, and spacing is the biggest single lever. Caveats, plainly: both houses are not permit sets; this is lumber only (no labour, no clips or plate ties); and whether a wall may use 24 in studs or a single top plate is an engineer's and code call the tool does not make. A third generated house did not lay out because two windows sit 3 in apart.
Try your own plan in the wall framing takeoff: the Advanced framing menu is on the page. A real plan with the builder's real order would settle how big the saving is in practice.