Market structure and key figures
Core framing
This map treats a home build as an information network, not just a physical jobsite. The same project is seen differently by the Census, by the architect, by the builder, by trade contractors, and by the authority having jurisdiction (AHJ). The goal here is to make those viewpoints legible and connected.
Key figures and framing signals
| Figure / label | Meaning in this map | Evidence |
|---|---|---|
| 73.1% | of 2024 single-family starts were built for sale, so the default map uses the production / built-for-sale lane. | S2 - NAHB Eye on Housing - Custom Home Building Share Declines in 2024, S1 - U.S. Census Bureau - Survey of Construction definitions |
| 17.5% | were custom homes in 2024, so the custom / owner’s-land lane is shown as a second operating model. | S2 - NAHB Eye on Housing - Custom Home Building Share Declines in 2024, S1 - U.S. Census Bureau - Survey of Construction definitions |
| 2 clocks | run at once: the statistical clock (authorized → started → completed) and the delivery clock (programming → design → procurement → construction → closeout). | S1 - U.S. Census Bureau - Survey of Construction definitions, S3 - AIA East Tennessee - Design to Construction, S4 - AIA Contract Documents - B201 basic services |
| Many AHJs | adopt model codes by law and may amend them; planning, building, fire, utilities, and public works may all touch one project. | S11 - International Code Council - Code adoption resources, S12 - SF Planning - Homeowners, S13 - Sacramento County - Building Permits & Inspection Division |
Default and alternative operating models
Built for sale - production
Built-for-sale / production: the dominant U.S. path. The builder typically controls land, standard plan choices, permit strategy, purchasing, trade relationships, and early schedule. The end buyer may appear later and can legally count as a sale before the house is finished. (Sources: S1, S2)
Custom - owner’s land
Custom / owner’s land: the owner is active from the beginning, often hiring the architect early and choosing a builder later through bid, negotiation, or preconstruction services. Census separates contractor-built and owner-built houses inside this lane. (Sources: S1, S2, S3, S33, S34)
Important market-structure notes
- U.S. “new home sales” statistics are mostly a production-builder lens. Census counts new houses sold when a contract or deposit is taken, and excludes owner-built houses and houses built by a general contractor on the owner’s land.
- The meaning of “owner” changes by delivery model: in custom work it is usually the homeowner from day one; in built-for-sale work it is often the builder-developer until a buyer enters the picture.
- Built-for-rent exists in Census data, but it is outside the main scope of this vault.
Related notes
Evidence
- S1 - U.S. Census Bureau - Survey of Construction definitions, S2 - NAHB Eye on Housing - Custom Home Building Share Declines in 2024, S3 - AIA East Tennessee - Design to Construction, S33 - AIA Contract Documents - B110 custom residential project, S34 - AIA Contract Documents - A111 owner and home builder for a single-family home