Cost & Owner-Builder Planning

Owner-building doesn't save what most people think it does. The savings show up not in labor (which you're now providing for free, at the cost of your time) but in markups, change orders, and decisions you can make slowly and well. A typical contractor build carries roughly 15-25% in overhead and profit; an owner-builder who manages subs well and handles finish work themselves can keep most of that, while doing it on their own timeline. The catch is that you trade money risk for schedule risk and complexity risk.

The financial decisions worth getting right early are: budget realism (per-square-foot numbers from the internet are almost always low for high-performance builds), financing path (construction-to-permanent loans, owner-builder loans, or cash-pay-as-you-go all have different documentation requirements), and the DIY-vs-pro split (a few smart "hire-it-out" decisions on excavation, foundation, and electrical can save more time than they cost). Permit workflow matters too — pulling permits as owner-builder shifts liability onto you, and inspection schedules don't bend to your weekend availability.

Starting points in this hub:

• Passive House cost breakdown — line-item budget for a certified-grade build.
• DIY vs. hiring builders — where your time is worth the labor savings and where it isn't.
• Green building incentives 2026 — federal, state, and utility programs current as of this year.
• Passive House cost calculator for square-footage-based estimates.

The honest tradeoff: owner-building can cost 30% less and take 100% longer. Plan for that calendar, not the optimistic one in your head. The ENERGY STAR tax credit reference is the cleanest authoritative summary of what the IRA-era incentives currently cover.