When do I need to start to be dried in before winter? Break ground by the end of June. Working backward from the dry-in date: framing and dry-in take three to four months, the foundation takes about a month, permitting in Teton County runs two to three months, and design runs 12 to 16 weeks. That puts the design agreement signature in the previous fall or winter, the permit in hand by May, and the excavator on site in June. Start later than that and you are choosing between a rushed shell and a foundation that sits under snow until spring.
I am Bryce Swager. Every SwagerBuilds home in Teton Valley and Eastern Idaho is dried in before winter, roof on and every window and exterior door installed. We do not pour foundations in winter. This is the calendar that makes that rule work.
What does “dried in before winter” actually mean?
Roof sheathing and underlayment on, roofing installed or at least weather-tight, wall sheathing wrapped, and every window and exterior door set and flashed. At that point the shell sheds weather and the inside can be heated. Plumbing, electrical, HVAC, insulation, drywall, cabinets, tile, trim and paint all happen inside that closed shell through the winter at normal pace. A house that is dried in before winter is a house that finishes on schedule. A house that is not loses weeks to snow removal, frozen materials and crews that cannot work.
What is the month-by-month calendar?
| When | What happens | How long |
|---|---|---|
| Previous October to January | Design agreement: plans, engineering coordination, selections, subcontractor bids by cost code, fixed construction price | 12 to 16 weeks |
| February to April | Permit submittal and review, HOA design review where the plat requires it, long-lead orders placed (windows, exterior doors, trusses, roofing) | 2 to 3 months |
| May to June | Excavation, footings, foundation walls, waterproofing, backfill | About 1 month |
| July to October | Framing, roof, windows and doors, exterior wrap | 3 to 4 months |
| December 1 | Dried in. Shell closed, temporary heat on | Hard date |
| December to spring | Rough-ins, insulation, drywall, finishes inside the closed shell | 5 to 7 months |
| Following spring to summer | Exterior finish, driveway, final grade, landscaping, final inspection, keys | 1 to 2 months |
The two dates that cannot move are the permit and the window order. A permit that lands in July instead of May pushes the foundation to August and the dry-in into November with no margin. A window package ordered after framing starts arrives in December. Both are design-agreement problems, which is why the design agreement comes first and includes the long-lead orders.
What if I am reading this in the fall?
You are on time for next year. Sign the design agreement this fall, finish design and selections over the winter, submit for permit in late winter, and break ground when the ground thaws. That is the normal path, not a delay. What you are not on time for is a foundation this year, and I would tell you that on the first call rather than sell you a winter pour. Why we do not pour concrete in winter covers the reasons.
What if I am reading this in the spring?
If your plans and permit are done, you are early. If you are starting from nothing in April, the math does not work for a before-winter dry-in this year: 12 to 16 weeks of design puts the permit submittal in August and the foundation in October at the earliest. The honest schedule is design through the summer, permit in the fall, foundation the following May. The alternative, which I see other builders offer, is a plan set thrown together in six weeks to chase a summer start. The house pays for that for 50 years.
What slips the schedule most often?
- Lot closing. A lot that closes in June instead of March moves everything. Walk the lot with your builder before you write the offer.
- HOA design review. Teton Springs, Teewinot and the Driggs subdivisions add 30 to 90 days. It belongs in the calendar from day one.
- Selections. Every selection left open after design lock is a change order later and a delay now. Selections are finished inside the design agreement, not during framing.
- Well and septic. Well permitting adds six to twelve weeks on rural lots and perc results can move the house. Scoped during design, not after.
- Windows. The longest lead item on the job. Ordered the day the construction contract signs.
The full build timeline and the permit paths by county cover the rest of the schedule.
Common questions
Can we pour the foundation in October and still make the dry-in date?
Rarely, and I do not plan on it. A September pour leaves ten to twelve weeks to frame, roof and set windows, which is possible on a simple plan with the window package already on site. An October pour leaves six weeks. If the foundation is not in by the end of September, it waits for spring.
Does the dried-in-before-winter rule apply in Rigby and Idaho Falls too?
Yes. The valley floor has a longer open season than Teton Valley, so the foundation window runs into October, but the dry-in date is the same. Winter is for inside work everywhere we build.
When should I call a builder if I want keys in two years?
Now. Two years out is the comfortable version of this calendar: design this winter, permit and foundation next summer, dried in next December, keys the following summer.
Want your build mapped backward from the dry-in date?
Tell me where the lot is and when you want keys, and I will tell you on the call whether the dates work. Book a 15-minute planning call.
If your lot is in Teton Valley, start with the custom home builder in Driggs guide for costs, permits and timelines, or the Tetonia custom home builder page if you are looking north, where we have West Ridge Ranch lots ready for 2027 builds. The Teton Valley page covers Victor and the whole valley.