Serving Southeast Ohio Since 2007
Common Barndominium Sizes
Barndominiums are an increasingly popular option for homeowners looking for affordable, flexible housing. But before you plan or build one, an important question arises: How big should your barndominium be?
The right size depends on a few key factors:
- How many people will live there
- Your overall budget
- Zoning regulations in your area
- The size of your property
In this guide, we’ll discuss common barndominium sizes, from cozy two-person layouts to larger family-friendly homes, and help you determine what makes the most sense for your needs. You’ll also get a clear picture of what different square footages actually look like and how to think through your priorities.
Need help visualizing the space? Our 3D builder lets you explore real layout options and customize the interior and exterior based on square footage. Want to learn more about barndominums? Please read our article discussing this housing trend in more depth.
What is the Typical Size of A Barndominium?
The most common size for a barndominium varies between 1,200 square feet and 3,000 square feet, depending on your needs. These are usually 40×30, 40×60, or 40×75 barndominiums.
These sizes allow for multiple bedrooms and bathrooms, making them perfect for families. While these are the most common sizes, the best size will largely depend on your needs.
Factors To Consider When Choosing A Barndominium Size
Before we get into the most common barndominium sizes, their square footage, and layout options, it’s important to note that the best size for you will largely depend on the following factors:
Household Needs
Consider how many people will live in your home, its planned use, and any entertaining you plan to do. This will help you decide how many rooms you need, the size of group areas like your kitchen or living room, and whether you need any extra space for a home office.
The number of rooms you want and the space you need will help you determine the best size.
Budget
The larger the pole barn, the more it will cost to construct. Set a budget and determine what size will meet your space needs while still aligning with the budget you set.
Zoning
Depending on where you plan to place your barndominium, there may be certain sizing restrictions. Some zoning districts will set maximum square footage requirements or have certain setback requirements that determine how large your barndominium can be.
Lot Size
Similarly to zoning, the size of your property will have an impact on the size of your barndominium. Since you must meet setback rules, easements, or other requirements, the size of your property may to determine the size of your barndominium.
Always account for extra space in case you want to add an addition to your barndominium, whether that be for additional rooms or an attached pole barn garage.
What Are the Standard Barndominium Sizes?
Standard barndominium sizes are based on common post-frame building widths and construction spans. While a barndomnium can be completely customizable, most builders work with these typical dimensions to simplify design, ordering and assembly.
Standard widths are typically 30, 40, 50, or 60 feet and standard lengths typically are 30, 50, 60, 75, 80, and 100.
Below are common barndominium sizes, grouped by small, medium, and large options in standard barndominium sizes.
Small-Size Barndominiums
| Dimension (in feet) | Square Footage | Layout |
| 20×20 | 400 | Studio layout: combined living/sleeping, kitchenette, 1 bath; ideal for guest house or ADU |
| 24×24 | 625 | 1 bed, 1 bath; more defined living/sleeping zones; optional breakfast bar |
| 24×40 | 800 | 1–2 beds, 1 bath; galley kitchen; small dining area; potential for stackable laundry |
| 30×30 | 900 | 2 beds, 1 bath; open-concept kitchen/living; basic entryway or mudroom |
| 24×40 | 1,000 | 2 beds, 1–2 baths; small pantry or office nook; utility room possible |
| 20×48 | 1,000 | 2 beds, 1 bath; elongated layout allows split-bedroom design or larger shared space |
| 30×40 | 1,200 | 2–3 beds, 2 baths; open living/dining/kitchen; walk-in closet and separate laundry room |
| 24×50 | 1,250 | 3 beds, 2 baths; L-shaped kitchen; potential for front porch or rear deck |
| 30×50 | 1,500 | 3 beds, 2 baths; walk-in pantry; flex room or office; optional mudroom or foyer entry |
Medium-Size Barndominiums
| Dimension (in feet) | Square Footage | Layout |
| 40×40 | 1,600 | 3 beds, 2 baths; open-concept kitchen/living; dedicated laundry; optional walk-in pantry |
| 36×50 | 1,750 | 3 beds, 2 baths; L-shaped kitchen; office or flex room; mudroom and entry nook |
| 30×60 | 1,800 | 3–4 beds, 2–3 baths; split-bedroom layout; walk-in closet; storage or craft space |
| 40×50 | 2,000 | 4 beds, 2–3 baths; defined dining area; large island kitchen; optional front/back porch |
| 45×45 | 2,025 | 3–4 beds, 2.5 baths; open living/dining combo; extra-deep primary suite; walk-through pantry |
| 30×70 | 2,100 | 4 beds, 2.5 baths; flex room or small office; long gallery-style hall for room separation |
| 30×80 | 2,400 | 4 beds, 3 baths; large open floor plan; bonus room, office, or media space |
| 40×60 | 2,400 | 4–5 beds, 3 baths; split-bedroom with center living area; optional 2-car garage or shop bay |
Large-Size Barndominiums
| Dimension (in feet) | Square Footage | Layout |
| 50×50 | 2,500 | 4 beds, 3 baths; large kitchen; walk-in pantry; office; mudroom |
| 30×90 | 2,700 | 4 beds, 3 baths; long narrow layout; split-bedroom plan; home office + den |
| 40×75 | 3,000 | 5 beds, 3 baths; oversized primary suite; large family room; garage or shop attachment |
| 40×80 | 3,200 | 5 beds, 3.5 baths; formal dining, bonus room, large pantry, potential guest suite |
| 60×60 | 3,600 | 5–6 beds, 4 baths; symmetrical layout; large central living space; game room or media room |
| 40×90 | 3,600 | 5 beds, 4 baths; wide and deep footprint; home gym or office; covered front porch |
| 40×100 | 4,000 | 6 beds, 4 baths; loft or second floor possible; shop or 3-car garage on slab |
| 50×80 | 4,000 | 5–6 beds, 4 baths; large central great room; breezeway; attached workshop or storage |
| 60×70 | 4,200 | 6 beds, 4.5 baths; multi-wing layout; indoor/outdoor living; expansive mudroom |
| 50×100 | 5,000 | 6+ beds, 5 baths; dual kitchens or in-law suite; large utility spaces; game room |
| 70×100 | 7,000 | Multi-gen home: 8+ beds, 6+ baths; multiple living areas; attached shop; full gym/theater |
Are Barndominium Sizes Customizable?
The sizes mentioned above are just industry-standard sizes; you can absolutely customize your barndominium size. Using our 3D builder, you can choose from a range of sizes or contact us to learn more about custom sizing options.
What Barndominium Size Do You Need?
Based on the number of rooms you’ll need, your budget, and any zoning or property size considerations you must make, you can select one of the sizes above that aligns with each of these requirements.
CMT Components offers barndominium kits in a range of sizes to best suit your needs. Begin building in 3D, or contact us for help deciding which size is right for you!