How Much Does a Detached Garage Affect Property Value in 2025?

Garages attached to or detached from your house are an incredibly useful feature: they protect cars from the elements, provide storage space for outdoor equipment, and sometimes function as additional living space.

If you’re considering adding a new garage to your property or remodeling an existing structure, you may wonder how much a detached garage adds to property value.

These things aren’t cheap, and as a homeowner, you want to ensure that any money you pour into the home will increase its value when you’re ready to sell. This guide will break down the cost of adding a detached garage to your property, what options are available, and answer how much value one of the structures can add to your home’s value.

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Cost to build an attached garage vs. a detached garage

The cost to build a detached garage can vary greatly depending on the size, materials used, labor, and location. Also, since the contractor cannot use the walls or power from your current home when constructing your standalone garage, attaching the garage to the house is 10% to 15% less expensive than constructing a detached version.

Angi’s March 2024 report noted that the square footage can significantly impact garage construction costs. On average, working with a professional can cost you about $50 per square foot for labor and materials. However, prices often start at $30 per square foot for simple, attached garages. The cost of a standard detached, two-car garage falls between $14,500 and $40,300, averaging around $30,000.

Cost of prefab structures

For homeowners looking for a cheaper route, you can find pre-fabricated detached garages for a fraction of the cost. Prefab garage costs start at $7,200. Still, you can find options for less than $100, like the DuraMax Vinyl Garage Building Shed with Foundation Kit, and as much as $150,000, like what Barn Pros offers (these structures could also double as additional living space in the form of a barndominium — hence the higher price).

Here are just a few options currently on the market:

• Sheds Unlimited offers a wide selection of prefab garages you can choose from:
• Standard workshop single-car starts at $6,378. It features a raised panel garage door, two windows, and a single door. You can choose between wood siding or vinyl.
• Single-story workshop two-car garage starts at $20,931. It features two raised panel garage doors, two windows, and a pre-hung single door. You can choose between wood siding or vinyl, but you can also get this model with an attic (starting at $29,238) or a full second story (starting at $38,658).

Home Depot has a smaller selection of prefab garages to choose from:

• Best Barns Sierra 12’ x 24’ Wood Garage costs about $4,526. This model has few customization options, but you can choose optional windows and a walk-in door. This kit does not come with a floor.
• Best Barns Dover 12’ x 20’ Wood Garage costs about $6,305. The high walls offer plenty of space to add storage shelves and still fit one car inside. Everything is included with this kit, even the materials necessary to build the floor.