Prefab garages have become an increasingly popular choice for homeowners looking for a cost-effective and efficient way to add storage, protect their vehicles, or create additional workspace. Unlike traditional stick-built garages, prefabricated garages are manufactured off-site in controlled environments and then delivered for quick assembly. This streamlined construction process not only reduces labor costs but also minimizes weather-related delays, making them a convenient option for many.

In this guide, we’ll break down the cost of prefab garages in 2025, exploring different price points based on size, materials, and additional features. We’ll also discuss hidden expenses, compare prefab options to traditional garages, and provide tips for getting the best value for your money. Whether you’re planning to install a prefab garage for storage, a home workshop, or an accessory dwelling unit (ADU), this article will help you make an informed decision.

Factors Influencing Prefab Garage Costs

When considering a prefab garage, the total cost depends on several key factors. Understanding these variables can help you make informed decisions and stay within budget while ensuring you get the best value for your investment.

1. Size and Dimensions

One of the most significant cost determinants is the size of the garage. The larger the structure, the more materials, labor, and foundation work required, which directly impacts pricing.

• Single-Car Garages (Typically 12×20 to 14×24 feet):
  • Best suited for compact spaces, providing basic storage for one vehicle with limited extra room.
  • Costs range from $4,000 to $12,000, depending on materials and customization.
  • Ideal for homeowners needing a budget-friendly option or a simple storage shed conversion.
• Two-Car Garages (Usually 20×20 to 24×24 feet):
  • One of the most popular choices for suburban homes.
  • Prices generally fall between $8,000 to $20,000, based on features.
  • Can include additional space for tools, bikes, or a small workshop.
• Three-Car Garages (Common sizes: 30×30 to 36×24 feet):
  • Designed for families with multiple vehicles or those needing extra storage.
  • Expect costs between $15,000 to $35,000, with larger options exceeding this range.
  • These garages often include added features such as built-in storage, lofts, or workshop areas.
• Impact of Square Footage on Cost:
  • Prefab garages are usually priced per square foot.
  • Steel garages cost around $6–$15 per sq. ft., while wood garages range from $10–$25 per sq. ft.
  • Larger garages often have a lower per-square-foot cost but require more materials and labor, making the total price higher.

2. Materials Used

The type of materials used in prefab garages significantly impacts durability, maintenance requirements, and overall costs. Here’s how different materials compare:

Steel Prefab Garages

• Pros:
  • Highly durable, resistant to fire, pests, and harsh weather.
  • Low maintenance with a lifespan of 30+ years.
  • Typically cheaper than wood, with prices ranging from $6–$15 per sq. ft.
• Cons:
  • Less customizable compared to wood.
  • Can be prone to rust in coastal areas unless coated properly.

Wood Prefab Garages

• Pros:
  • Aesthetic appeal, blends well with residential properties.
  • Customizable with various finishes, trims, and paint options.
  • Ideal for heated garages since wood provides better natural insulation.
• Cons:
  • Requires regular maintenance (sealing, staining, or painting).
  • Higher initial cost, averaging $10–$25 per sq. ft.

Vinyl Prefab Garages

• Pros:
  • Low-maintenance alternative to wood, resistant to moisture and rot.
  • Affordable mid-range option, usually priced between $8–$18 per sq. ft.
• Cons:
  • Limited design flexibility compared to steel or wood.
  • Can become brittle over time in extremely cold climates.

3. Design Complexity

A basic prefab garage with standard features will always cost less than one with customizations or premium add-ons. The more complex the design, the higher the price due to additional materials, labor, and installation time.

• Standard Designs:
  • These are pre-designed structures with minimal modifications.
  • Quick to install and budget-friendly.
  • Typically include a single or double door, standard siding, and a basic roof.
• Custom Features That Increase Costs:
  • Lofts & Second Stories – Adding a loft for storage or a second floor for a workshop or apartment significantly raises costs. A 2-story prefab garage can cost 30–50% more than a single-story option.
  • Windows & Skylights – Enhancing natural light with extra windows, skylights, or glass garage doors increases material and labor expenses.
  • Insulation & Climate Control – Essential for garages used as workshops or living spaces, insulation costs range from $2,000 to $5,000.
  • Custom Doors & Entryways – Upgrading to an oversized door for an RV prefab garage or adding side access doors adds to installation costs.

Related: Prefab Garage Cost Cheaper Than a Traditional Build? Cost Breakdown 2025

4. Geographic Location

Prefab garage costs vary significantly by region due to differences in labor rates, material availability, and climate-related construction requirements.

Regional Cost Variations

• Northeastern U.S. (Maine, Massachusetts, New Hampshire, Connecticut)
  • Higher labor costs and strict building codes can increase prices.
  • Prefab garages in these states must meet snow load requirements (50–70 PSI).
  • Expect costs 10–20% higher than national averages.
• Midwest (Wisconsin, Michigan, Minnesota, Ohio)
  • Prices are moderate, with strong demand for insulated garages due to cold winters.
  • Steel prefab garages are popular for their durability against heavy snow.
• Western & Coastal States (California, Oregon, Washington, Colorado, Utah)
  • Higher shipping costs for prefab kits may increase overall expenses.
  • Coastal areas require corrosion-resistant materials, making vinyl or steel garages preferable.
• Southern U.S. (North Carolina, Texas, Florida, Georgia, Virginia)
  • Prefab garages in hurricane-prone areas need reinforced wind-resistant materials, increasing costs.
  • Metal garages are more common due to their durability and low maintenance in humid conditions.

Impact of Local Climate on Material Choice & Cost

• Cold Climates – Insulated steel or wood garages are recommended to withstand snow and freezing temperatures. Heated options may add $2,000–$5,000 to the total cost.
• Coastal Climates – Galvanized steel or vinyl-coated garages are ideal for salt-air resistance, but these materials may cost slightly more.
• Hot & Humid Climates – Ventilation is key, and choosing light-colored roofing helps reduce heat buildup.

Understanding the average costs of prefab garages in 2025 is essential for budgeting and making informed decisions. Here’s a detailed breakdown:

Price Range Overview

Prefab garage prices vary widely based on factors such as size, materials, design complexity, and additional features. Generally, prices range from $5,000 to $30,000, with an average cost around $15,000.

Cost by Size

The size of the garage significantly influences the overall cost. Below are typical sizes with their average costs:

Single-Car Garages

• Dimensions: Approximately 12 feet by 20 feet (240 square feet).
• Average Cost: Ranges from $7,500 to $14,200.
• Example: A basic single-car prefab garage may cost around $7,000 to $8,000, depending on materials and features.

Two-Car Garages

• Dimensions: Typically 20 feet by 20 feet (400 square feet).
• Average Cost: Between $19,600 and $28,200.
• Example: A standard two-car prefab garage might cost between $10,000 to $14,000, varying with design and materials.

Three-Car Garages

• Dimensions: Around 30 feet by 20 feet (600 square feet).
• Average Cost: Ranges from $28,200 to $42,700.
• Example: A three-car prefab garage can cost approximately $28,200 and up, depending on customization and materials.

Cost by Material

The choice of material impacts both the initial cost and long-term maintenance. Here’s a comparison:

Steel Prefab Garages

• Price per Square Foot: Approximately $2,000 to $50,000 total, depending on size and customization.
• Benefits: Durable, low-maintenance, and resistant to pests and fire.

Wood Prefab Garages

• Price per Square Foot: Total costs range from $15,000 to $150,000, influenced by size and design complexity.
• Benefits: Aesthetic appeal, customizable, and better natural insulation.

Vinyl Prefab Garages

• Price per Square Foot: Total costs between $4,500 to $95,000, based on size and features.
• Benefits: Low maintenance, moisture-resistant, and affordable.

When planning for a prefab garage, consider both the initial investment and the long-term benefits of each material and size option to make the best choice for your needs and budget.

Additional Costs to Consider

When planning for a prefab garage, it’s essential to account for several supplementary costs that can significantly impact the overall budget. These include foundation installation, delivery and assembly, permits and inspections, and utilities and insulation.

1. Foundation Installation

A sturdy foundation is crucial for the longevity and stability of your prefab garage. The type of foundation you choose will influence both the performance and cost.

• Types of Foundations:
  • Concrete Slab: A popular and durable option, concrete slabs provide a solid base for the garage.
  • Gravel Foundation: More affordable and easier to install, gravel foundations offer adequate support for many prefab structures.
  • Wood Foundation: Less common but suitable for certain applications, wood foundations can be a viable option depending on site conditions.
• Associated Costs:
  • Concrete Slab: The cost for a concrete slab foundation ranges from $5 to $35 per square foot, varying by region and site-specific factors.
  • Gravel Foundation: Gravel is a cost-effective choice, with prices depending on the size of the garage and local material costs.
  • Wood Foundation: Costs for wood foundations vary based on material prices and design specifications.

Factors such as garage size, soil type, site preparation, and climate considerations can influence foundation costs.

2. Delivery and Assembly

Transporting and assembling your prefab garage involves additional expenses that vary based on several factors.

• Transportation Fees:
  • Distance: Delivery costs are often calculated per mile, with rates averaging between $4 to $10 per mile.
  • Size and Weight: Larger or heavier structures may incur higher transportation fees due to special handling requirements.
• On-Site Assembly Charges:
  • Professional Assembly: Hiring professionals for assembly can cost between $2,000 to $30,000, depending on the complexity and size of the garage.
  • DIY Assembly: Opting for self-assembly can save on labor costs but requires time, tools, and expertise.

Some prefab garages are delivered fully assembled, while others arrive in modules or kits requiring on-site construction.

3. Permits and Inspections

Before installation, it’s essential to comply with local building regulations, which may necessitate obtaining permits and undergoing inspections.

• Potential Legal Requirements:
  • Building Permits: Most municipalities require building permits for new structures, including garages.
  • Zoning Approvals: Ensure the garage complies with local zoning laws, such as setbacks and usage restrictions.
• Associated Costs:
  • Permit Fees: Permit costs vary widely by location and can range from $200 to $1,000 or more.
  • Inspection Fees: Some areas may charge additional fees for required inspections during and after construction.

It’s advisable to consult with local authorities to understand the specific requirements and fees in your area.

4. Utilities and Insulation

Enhancing your prefab garage with utilities and proper insulation increases functionality but also adds to the overall cost.

• Electrical Wiring:
  • Basic Installation: Installing basic electrical wiring for lighting and outlets can cost between $1,500 to $4,500, depending on the garage size and electrical needs.
  • Advanced Systems: Adding complex systems like HVAC units or specialized equipment will increase costs.
• Plumbing:
  • Basic Plumbing: Installing plumbing for a simple sink or hose connection may cost around $1,000 to $2,000.
  • Comprehensive Plumbing: Adding a bathroom or extensive plumbing systems can raise costs significantly.
• Insulation:
  • Types and Costs:
    • Blown-In Insulation: Ranges from $0.50 to $1.50 per square foot.
    • Spray Foam Insulation: Ranges from $1.50 to $4 per square foot.
  • Total Insulation Costs: Depending on garage size and insulation type, total costs can range from $1,300 for a small one-car garage to over $15,000 for a large three-car garage with premium insulation.

Proper insulation enhances energy efficiency, making the garage more comfortable and protecting stored items from extreme temperatures.

Cost Comparison: Prefab vs. Traditional Garages

When deciding between a prefab garage and a traditional stick-built garage, cost is a major factor. While prefab garages offer affordability and quicker installation, traditional garages provide greater flexibility in customization. Below, we break down the cost differences between these two options in terms of initial construction costs, long-term maintenance, and resale value to help you make an informed decision.

1. Initial Construction Costs: Prefab vs. Traditional Garages

One of the biggest advantages of prefab garages is their lower upfront cost. Since they are manufactured offsite in a controlled environment, labor costs and material waste are minimized. On the other hand, traditional garages require custom construction, leading to higher labor and material expenses.

Cost Breakdown:

Garage Type	Average Cost (Standard 2-Car Garage)	Installation Time
Prefab Garage (Metal/Wood)	$8,000 – $25,000	1–3 days
Traditional Garage	$20,000 – $50,000+	2–6 weeks

Additional Cost Factors:

• Permits & Zoning: Both garage types require local permits, but prefab structures may have fewer zoning restrictions.
• Foundation: Prefab garages may use a gravel or concrete slab foundation, while traditional garages require a full concrete slab with footings, adding $3,000–$8,000 in costs.
• Customization: Custom-built garages allow for more design freedom, but prefab garages can include optional add-ons like lofts, apartments, or workspaces for an extra charge.

💡 Key Takeaway: If budget and speed are priorities, prefab garages are the clear winner. However, if you want a fully customized design, a traditional garage might be worth the extra investment.

2. Long-Term Maintenance and Durability

Expected Lifespan & Durability

Both prefab and traditional garages are built to last, but material choices affect longevity and maintenance costs.

Garage Type	Expected Lifespan	Maintenance Level
Prefab Metal Garage	30–50+ years	Low (rust-resistant coatings)
Prefab Wood Garage	20–40 years	Moderate (repainting, sealing)
Traditional Garage (Wood)	30–50+ years	High (roof repairs, repainting)

Maintenance Costs Over Time:

• Metal prefab garages require the least upkeep, with rust-resistant coatings and minimal repairs.
• Wood prefab garages need periodic staining or painting to prevent moisture damage.
• Traditional wood garages require roof repairs, repainting, and potential structural reinforcements over the years.

💡 Key Takeaway: Metal prefab garages offer the best durability with the lowest maintenance costs, making them ideal for Maine’s harsh winters and high humidity.

3. Resale Value Impact: Do Prefab Garages Add to Property Value?

Many homeowners wonder if installing a prefab garage will increase their property’s resale value. The answer depends on size, materials, and local real estate trends.

Resale Value Considerations:

• A well-built prefab garage can increase home value by $10,000–$30,000, especially if it includes an apartment or loft.
• Traditional garages generally offer a higher return on investment (ROI) since they are considered permanent structures.
• Prefab garages with living quarters (such as a garage apartment) can significantly boost home value and attract buyers looking for rental income potential.

Resale Value Comparison:

Garage Type	Average Resale Value Increase	Best For
Prefab Metal Garage	$10,000 – $20,000	Storage, workshops, vehicle protection
Prefab Garage with Apartment	$20,000 – $50,000	Guesthouse, rental income
Traditional Garage	$25,000 – $60,000	Long-term investment, higher curb appeal

💡 Key Takeaway: If your goal is higher property value, a traditional garage or a prefab garage with an apartment will provide the best ROI. However, a standard prefab garage still adds resale value while costing significantly less upfront.

Final Verdict: Which One Should You Choose?

Factor	Prefab Garage ✅	Traditional Garage ✅
Budget-Friendly	✅ Lower upfront costs	❌ Higher costs
Quick Installation	✅ 1–3 days	❌ 2–6 weeks
Low Maintenance	✅ (Metal models)	❌ (Wood requires upkeep)
Customization	❌ Limited, but available	✅ Full design flexibility
Resale Value	✅ Moderate increase	✅ Higher increase

Final Recommendation:

• Go with a prefab garage if: You want an affordable, quick-to-install structure with low maintenance.
• Choose a traditional garage if: You plan to stay in your home long-term and want a fully customized garage with the highest resale value.

💡 Pro Tip: If you want a balance between cost-effectiveness and property value, consider a prefab garage with an apartment—it offers additional living space without the high costs of traditional construction.

Tips to Optimize Your Investment

1. Selecting the Right Size and Features

Choosing the appropriate size and features for your prefab garage ensures it meets your current needs and accommodates future requirements.

Assess Your Needs:

• Vehicle Accommodation: Measure the length, width, and height of your vehicles, including space for opening doors and maneuvering. For instance, a standard single-car garage is typically 14×24 feet, providing ample space for most vehicles.
• Storage and Workspace: Determine if you’ll need additional space for tools, equipment, or a workshop. Planning for extra storage can prevent clutter and enhance functionality.

Consider Future Uses:

• Expansion Potential: Opt for designs that allow for future expansions or modifications, such as adding a loft or additional bays.
• Multi-Functionality: Features like lofts can provide extra storage or be converted into living spaces, increasing the utility and value of your garage.

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2. Choosing Quality Materials

The materials you select significantly impact the durability, maintenance, and longevity of your prefab garage.

Material Options:

• Steel: Highly durable and resistant to damage, steel is often more affordable and quicker to install than traditional materials.
• Wood: Offers a traditional aesthetic and is customizable but may require more maintenance over time.

Balancing Costs and Benefits:

• Upfront Costs vs. Longevity: Investing in high-quality materials may have higher initial costs but can lead to lower maintenance expenses and a longer lifespan.
• Climate Considerations: Choose materials suited to your local climate to ensure durability and reduce weather-related wear.

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3. Hiring Reputable Manufacturers and Builders

Selecting experienced professionals ensures quality construction and a smoother building process.

Research and Reviews:

• Manufacturer Reputation: Opt for manufacturers with positive reviews and solid warranties.
• Portfolio and Experience: Review past projects to assess the quality and style of their work.

Certifications and Warranties:

• Industry Certifications: Ensure the builder has relevant certifications and adheres to industry standards.
• Comprehensive Warranties: A solid warranty can provide peace of mind and protect your investment.

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4. Planning for Future Needs

Anticipating future requirements can save time and money in the long run.

Scalability:

• Design Flexibility: Choose designs that can be easily expanded or modified as your needs evolve.
• Utility Provisions: Plan for future utilities like electricity, plumbing, or HVAC systems, even if not immediately needed.

Resale Considerations:

• Market Appeal: Features like additional storage, living spaces, or workshops can enhance resale value.
• Compliance with Codes: Ensure the garage meets local building codes and regulations to avoid future complications.

For a visual guide on choosing the right garage size, you might find this video helpful:

Conclusion:

In conclusion, investing in a prefab garage in Maine offers a practical and efficient solution for enhancing your property’s functionality and value. Here’s a recap of the key points discussed:

Prefab garages generally present lower initial construction costs and reduced long-term maintenance expenses compared to traditional garages. However, traditional garages may offer higher resale value due to their permanence and customization potential.

Selecting the appropriate size and features, choosing quality materials, hiring reputable manufacturers and builders, and planning for future needs are crucial steps to ensure your prefab garage meets both current and future requirements.

Before making a final decision, it’s essential to conduct thorough research. Evaluate different garage styles, materials, and features to determine what best suits your needs and budget. Additionally, obtaining multiple quotes from various manufacturers and builders will provide a comprehensive understanding of the market, helping you make an informed choice.

By taking these steps, you can confidently invest in a prefab garage that will serve you well for years to come.