How long does it take to build a modular home? The honest answer is that the house itself is the fast part. The factory build takes a couple of weeks and the home is set on its foundation in a day or two. Most of the calendar goes to land, financing, design, permits and site work, and those steps are where a modular project in New York is won or lost on time.
Here is a realistic timeline based on how our projects actually run, with the steps you can speed up and the ones you cannot. First, a look at set day on a city lot in Buffalo:
The short answer
For most of our buyers, a modular home takes about 3 to 9 months from the first planning conversation to move-in:
- Planning phase: 2 to 6 months. Land, financing, design, blueprints and permits.
- Construction phase: 1 to 3 months. Foundation and site work, factory build, set day, finishing and utilities.
For comparison, the U.S. Census Bureau’s 2025 construction data shows the average single-family home took 7.4 months from start to completion, and contractor-built homes averaged 11.7 months from permit to completion. In the Middle Atlantic division, which includes New York, the average was 12.6 months from authorization to completion (NAHB analysis of Census data). Modular construction can be 2 to 3 times faster because the house is built indoors while the site is prepared.
Modular home timeline, step by step
| Step | Typical time | What drives it |
|---|---|---|
| Find land | 30 to 90 days | Availability, perc tests, surveys |
| Secure financing | 60 to 90 days | Construction loan approval and closing |
| Design and selections | About 30 days | How much you customize the plan |
| Stamped blueprints | 30 to 60 days | Architect and engineering review |
| Building permit | 7 to 14 days | Your town’s review process |
| Site prep and foundation | About 30 days | Excavation, soil, weather, foundation type |
| Factory construction | About 2 weeks | Production schedule and plan size |
| Set day and roof | 1 day (larger homes 2) | Number of sections, crane access |
| Stitching and seaming | 1 to 2 weeks | Number of module seams |
| Utilities, garage, porches, decks | About 1 month | Site structures and local contractors |
Several of these steps overlap. Land and financing often run together, and the factory builds your home while the foundation goes in.
Planning phase: where most of the time goes
Land
If you already own land, you can start right away. If not, expect one to three months to find and close on a lot. Before you buy, check zoning, road access for trucks and a crane, utilities, and whether the soil supports a septic system. Our buying land page walks through it.
Financing
Most buyers use a new construction loan that pays out in stages and converts to a mortgage. Approval and closing typically take 60 to 90 days. Start this early; it is the step most likely to hold up everything else. See our financing page for how construction loans work.
Design and blueprints
You pick a starting plan from our modular home floor plans, customize it and make your selections. Then stamped blueprints are ordered, which takes 30 to 60 days. Big changes add review time, so it pays to settle the layout before drawings start. Our article on modifying a standard floor plan covers what changes are simple.
Permits
Once the drawings are done, the building permit usually takes one to two weeks, though some towns move slower. In New York, a modular home goes through the same local permit and inspection process as any new house.
Construction phase: the fast part
Foundation and site work (about 30 days)
Clearing, excavation and the foundation take about a month, depending on the lot and the foundation type. This is also when most weather delays happen. In colder months, precast basement walls can help, because the panels are made indoors and installed in a day. Our guide to modular home foundation options compares poured and precast walls.
Factory build (about 2 weeks)
While your foundation goes in, the home is built in sections in the factory. Rain and snow do not stop production, and much of the interior is finished before it ships: drywall, cabinets, fixtures and often flooring.
Set day (1 to 2 days)
The sections arrive on carriers and a crane sets them on the foundation. In the video above, our crew set a home on a tight lot in the City of Buffalo, closing part of the street, setting both modules and tipping up a 12/12 roof the same day. Shingles are mostly done at the factory, and the rest is finished the next day. Larger homes take longer; a six-box chalet we set in Falconer took two days.
On set day we also walk through the house with you to note anything missing, wrong or damaged, so replacement parts can be ordered right away instead of holding up the finish work.
Finishing (about 1 to 2 months)
After the set, the seams between sections are stitched and finished inside and out, which takes one to two weeks. Then utilities are connected and any garage, porch or deck is built, which takes about a month. Final inspections lead to your certificate of occupancy.
What slows a modular project down
- Financing delays. Late appraisals or missing documents push everything back.
- Changes after drawings start. Every redesign means new drawings and sometimes a new review.
- Difficult lots. Rock, a high water table, steep slopes or tight access add site work.
- Winter site work. The factory keeps building in a Buffalo winter, but excavation and concrete can slow down. Plan foundation work with the season in mind.
- Contractor availability. Good local trades book ahead, so schedule them early.
How Turnkey Together keeps the schedule moving
With Turnkey Together, you get a factory-built home plus personal guidance through design, planning and on-site completion. You coordinate the local contractors for the site and finish work, and we guide you through each step and the order it happens in, so the foundation is ready when the house arrives and the trades follow in sequence. Read the full overview on the building process page, see why buyers choose modular construction, or call (877) 290-1846 to start your timeline.
