Barndominium under $100,000: how big can you build?
Updated: October 29, 2026 · Based on our barndominium cost guide
For $100,000, you can build a finished barndominium of about 350 to 770 sq ft with basic finishes, a septic system, a well and a driveway, if you manage the build yourself. That does not include the land. If your land already has water and sewer, the same money stretches to about 570 to 860 sq ft.
If you want more space, the other route is to build a larger shell now and finish it in stages: $100,000 covers the shell and slab for roughly 1,610 to 2,940 sq ft.
Three ways to spend $100,000
| What you build | Size for $100,000 |
|---|---|
| Finished home, basic finishes, with septic, well and driveway | 350 to 770 sq ft |
| Finished home, basic finishes, land already has water and sewer | 570 to 860 sq ft |
| Finished home, mid-range finishes, with septic, well and driveway | 330 to 730 sq ft |
| Shell and slab only, to finish over time | 1,610 to 2,940 sq ft |
The range runs from the most expensive case (smaller home) to the least expensive (bigger home) in our cost model.
What a 560 sq ft build costs, line by line
| What it pays for | Cost |
|---|---|
| Building shell, put up on your slab (kit plus erection) | $16,800 to $28,000 |
| Concrete slab foundation with footings | $2,200 to $6,700 |
| Plumbing, electrical, heating and cooling | $16,200 to $19,700 |
| Interior finishes (walls, insulation, cabinets, flooring, fixtures) | $16,200 to $19,800 |
| Permits, drawings and engineering, other site costs | $3,900 to $4,800 |
| Final steps (clean-up, landscaping, outdoor features) | $5,200 to $6,400 |
| Septic system (conventional) | $3,000 to $15,000 |
| Water well and pump | $6,400 to $20,100 |
| Driveway | $5,600 to $11,100 |
| Total | $75,500 to $131,600 |
How far $100,000 goes by state
Finished home with basic finishes, septic, well and driveway, adjusted for each state's building trade wages.
| State | Finished size | Shell and slab only |
|---|---|---|
| Texas | 380 to 850 sq ft | 1,770 to 3,230 sq ft |
| Florida | 380 to 860 sq ft | 1,780 to 3,240 sq ft |
| Ohio | 360 to 740 sq ft | 1,610 to 2,930 sq ft |
| Georgia | 390 to 860 sq ft | 1,780 to 3,250 sq ft |
| Tennessee | 370 to 830 sq ft | 1,730 to 3,160 sq ft |
| Alabama | 390 to 880 sq ft | 1,820 to 3,310 sq ft |
| Missouri | 340 to 750 sq ft | 1,570 to 2,860 sq ft |
| Oklahoma | 380 to 850 sq ft | 1,760 to 3,220 sq ft |
See every state in the cost by state table, or put in your own numbers in the cost calculator.
How to stretch $100,000 further
- Manage the build yourself rather than hiring a general contractor.
- Pick a simple rectangle in a standard kit size, such as 30 × 40 or 40 × 50.
- Start with basic finishes and upgrade later.
- Price your septic and well first: on some land they cost far more than average.
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Questions
How big of a barndominium can I build for $100,000?
About 350 to 770 sq ft finished, with basic finishes, a septic system, a well and a driveway, managing the build yourself and not counting land. If your land already has water and sewer, about 570 to 860 sq ft.
Can you build a barndominium shell for $100,000?
Yes. $100,000 covers the shell and a concrete slab for roughly 1,610 to 2,940 sq ft, at published prices for an erected shell. Plumbing, electrical, the interior, septic and well would still be needed before you could live in it.