Construction time, by who builds it
The Census Bureau tracks how long single-family homes take from the start of construction to completion. “Contractor-built” homes are built by a general contractor on land the owner already has, which is what a custom build on your lot is.
| Months from start | Contractor-built | Owner-built | Built for sale |
|---|---|---|---|
| 3 months or less | 9% | 7% | 20% |
| 4-6 months | 25% | 18% | 50% |
| 7-9 months | 23% | 21% | 19% |
| 10-12 months | 17% | 16% | 5% |
| 13 months or more | 26% | 39% | 5% |
Source: U.S. Census Bureau, Survey of Construction: months from start to completion, 2025. In the South region, which includes Virginia, 19% of contractor-built homes took 13 months or more.
Homes built for sale (the kind you buy in a builder’s community) are mostly done in six months. Custom homes take far longer because each one is different, bigger, and often on a tight infill lot.
The whole timeline
- Finding a builder and a lot: weeks to months.
- Design: often 2 to 6 months, longer with an outside architect.
- Permits: demolition, grading plan and building permit. Review times vary by county and by how many rounds of comments you get. Fairfax County links current review queue times from its grading plan page (Fairfax County, infill lot grading plans).
- Construction: see the table above. AZA Builders estimates 53 to 60 weeks for a 5,500 sq ft home at its middle tier. Curtis Ventures says it typically commits to occupancy within 180 days of the foundation pour.
- Final inspections and occupancy.
What slows a build down
- Design changes after permits are filed
- Grading plan comments that need another submission
- Long-lead items: windows, custom millwork, imported stone
- Weather during excavation and framing
- Choosing finishes late
How to keep it on schedule
Make most of your selections before construction starts, ask each builder for a written schedule with milestones, and ask how they handle delays caused by their subcontractors versus your changes.
