Design your home
All measurements in feet. Adjust anything — your estimate updates live.
Modular-aware: the factory-printed module doesn't pay local labor rates, so the regional index applies only to the site scope (foundation, MEP, on-site assembly & finish, local permits). At 55%, New York's ×1.30 index becomes an effective +16.5% on total — not +30%. This share is a placeholder assumption; David to calibrate against the real factory/site BOM split.
Baseline configuration from Vertis 3D's reference build. Scales with floor area.
How these numbers are derived — methodology & sources
Cost backbone
The Florida baseline is a two-point linear fit to Vertis 3D's own validated V4 project data: a 2,583 sq ft standard home at $239,968 ($92.89/sq ft) and a 1,679 sq ft starter at $196,635 ($117.10/sq ft). That separates a fixed component (site, foundation, MEP base, fixtures) from a per-sq-ft variable (shell, materials, labor, finishings). Source: David's V4 estimator sheet.
Regional indices — sourced, not invented
- New York x1.30 — validated across four independent sources (RSMeans City Cost Index NYC ~131 vs 100 national; NAHB / Home-Cost state averages; TXRAC 2024 $/sq ft NY $211 vs FL $160 = x1.32). Convergence band 1.28-1.32.
- California x1.35 — deliberately conservative. Raw sources put CA $225/sq ft vs FL $160 = x1.41, but CA is bimodal (coastal far higher than inland), so the index sits below the raw average. ADU demand is the live CA angle.
- Florida x1.00 — baseline. FL ~99% of the US national average ($160 vs $162), so it anchors the model cleanly.
Why a 55% region-sensitive share?
A 3D-printed home is part factory module, part on-site work. The factory module does not pay local labor rates, so applying a full regional index to the whole price overstates modular cost. The model applies the index only to the site scope (foundation, MEP, on-site assembly & finish, permits). The 55% default is a placeholder for David to calibrate against the real factory/site BOM split — slide it to 0% for flat-off, 100% for legacy behavior.
Accuracy band — where this model is most reliable
The backbone is a two-point linear fit (1,679 and 2,583 sq ft). It is most accurate between those anchors. Outside that band it drifts: at small / ADU footprints it tends to overstate (fixed per-home costs don't scale down linearly), and at very large footprints it can understate. The tool flags this live when you slide outside the calibrated range. Closing this needs 3–4 sized configurations from David so a component model can replace the straight line — until then, treat far-from-2,583 sq ft figures as directional.
Region indices, the site-share split, and the small/large-footprint accuracy band are labeled assumptions pending David's sign-off before this tool is placed on vertis3d.com. Backing research: region-multiplier validation + Florida closeout + math-faithfulness findings (internal).