Building a Garage Cost

• Having a contractor build a standard garage typically runs about $35 -$45 a square foot. A small, single-car garage is about 240 square feet, or $8,400 -$10,800; for a two-car structure it's around 380 square feet, or $13,300 -$17,100.
• AskTheBuilder.com suggests that a "dream" garage with plenty of room for two vehicles (without having to squeeze to get into and out of them) plus adequate work space, lighting, ventilation and attic storage requires 800-850 square feet, at $29,000 -$38,000 or more.
• Upgrading the quality of materials can bump the cost to $55 a square foot, or $13,200 for a minimum single-car structure, $21,000 for a two-car garage and $47,000 or more for the dream version.
• Accomplished do-it-yourselfers can cut costs considerably; materials for a single-car garage with a door but no windows start at $3,000 -$4,000, depending on the size and style. Kits with pre-cut or pre-fab materials to build a steel or wood garage run $5,000 -$14,000 or more, depending on the size of the structure and the quality of materials.

• Most areas require building permits for garages. Consult with a local building inspector (it's free) before you start any work, even simple design plans. Depending on location, the cost for building permits can be relatively inexpensive or quite pricey.
• Building a garage is a complex process that involves design, possibly demolition, excavation, site preparation, foundation work, framing and carpentry, roofing, insulation, windows, doors, eaves, exterior siding, electricity, ventilation and often plumbing. A general contractor will walk you through the process, hiring and scheduling subcontractors to do each phase of the work. ThisOldHouse.com describes a garage project.

• Plans for simple or elaborate garages run $20-$200; the book Build Your Own Garage Manual sells for less than $12.

• Do-it-yourself plans or kits are available through Archway Press, FirstDayCottage.com, HomePlaceStructures.com, ABetterGarage.com and ABetterPlan.com.
• Contractor referrals are available through the National Association of Home Builders and the National Association of the Remodeling Industry.
• Get several estimates, making clear what is (and isn't) included in each quote; request and check references; ask about the contractor's length and type of experience, Be sure they're properly bonded, insured and licensed in your state. See if there are any complaints with the Better Business Bureau.

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