How Much to Drywall a Garage: A Practical Cost Guide

A two-car garage has roughly 800 to 1,000 square feet of wall area and 400 square feet of ceiling area. The walls are open studs, bare framing that has been exposed since the house was built. Drywalling the garage turns it from a utilitarian shell into a finished room that is brighter, cleaner, and easier to heat. The cost depends on the size of the garage, whether the ceiling is included, the drywall thickness, the finish level, and who does the work. A basic hang-only job costs roughly half as much as a fully taped, textured, and painted finish. The difference between the two is whether the garage looks like a construction site with drywall or a finished room.

According to wikiHow’s wall finishing guide, co-authored by home improvement specialist Ryaan Tuttle with over 17 years of experience, proper drywall installation transforms a framed space into a finished room. The same principles apply to a garage: the framing must be flat and stable, and the drywall must be hung with the correct screw spacing to prevent sagging and cracking. This guide provides real costs for drywalling a standard two-car garage at multiple scope levels.

Cost by Scope for a Two-Car Garage (20×20×10)

A professional job for walls and ceiling at Level 4 finish costs $3,000 to $5,500. The DIY material cost is $1,000 to $1,700. The labor savings for doing it yourself are $2,000 to $3,800. The material cost is the same either way. The difference is entirely in the labor to hang, tape, mud, and sand.

Cost Per Sheet and Per Square Foot

Materials Breakdown for a Two-Car Garage (Walls + Ceiling)

A standard two-car garage, 20 feet by 20 feet with 10-foot ceilings, has roughly 800 square feet of wall area and 400 square feet of ceiling area. The wall area accounts for the three walls that are not the garage door wall. If the garage door is being replaced with a framed wall as part of a conversion, add roughly 120 square feet of wall area, or four additional sheets.

What Moves the Total Drywall Cost

• Ceiling inclusion. Adding the ceiling doubles the square footage and adds the physical challenge of overhead work. Ceiling drywall requires a lift rental or a second person. A drywall lift costs $30 to $40 per day at any tool rental shop. It is the best rental value in the entire project. Holding a 70-pound sheet of 5/8-inch drywall overhead while trying to drive screws is how backs are injured and drywall is dropped.
• Finish level. A Level 2 finish is tape embedded in compound with no additional coats. The tape and seams are visible. This is the minimum for a garage where appearance does not matter. A Level 4 finish is tape plus three coats of compound, sanded smooth. Seams are invisible under paint. This is the standard for a garage used as a workshop, gym, or living space. The cost difference between Level 2 and Level 4 is roughly $0.30 to $0.50 per square foot in labor, or $350 to $600 for a two-car garage. A Level 5 finish adds a skim coat over the entire surface. It adds $0.50 to $1.00 per square foot and is rarely needed in a garage.
• Drywall thickness and fire code. Building code requires 5/8-inch Type X fire-rated drywall on the ceiling of an attached garage if there is living space above it. The same requirement applies to the wall shared between the garage and the house. The thicker drywall provides a one-hour fire separation. For a detached garage or a garage with no living space above, standard 1/2-inch drywall is acceptable everywhere. 5/8-inch sheets weigh 70 pounds versus 55 pounds for 1/2-inch. The weight difference matters when working overhead alone.
• Existing wall condition. If the garage walls are open studs, the drywall hangs directly. If the garage has existing pegboard, OSB, or old drywall that must be removed first, add $200 to $500 for demolition and disposal. A dumpster bag for construction debris costs $30 and the collection fee is $100 to $150.
• Moisture-resistant drywall. Standard drywall absorbs humidity. In an unconditioned garage, moisture swings cause the paper facing to peel and can support mold on the back side over years. Moisture-resistant drywall, green board or purple board, costs $2 to $4 more per sheet. For a two-car garage using 38 sheets, the premium is $76 to $152. It is recommended for the bottom 4 feet of garage walls where snow melt, rain splash, and floor-level humidity concentrate.

DIY vs. Professional: Time and Savings

Drywall is physically demanding but technically accessible. Hanging drywall requires a drill, a drywall T-square, a utility knife, and the ability to lift 55 to 70-pound sheets repeatedly. Taping and mudding requires a technique that develops over the first few walls. The first seams will be rougher than the last seams. A garage is a good place to learn because the finish standard is lower than in living space.

A homeowner working alone can hang drywall in a two-car garage in one to two weekends. The taping and finishing take an additional two to three weekends because each coat of joint compound must dry completely before the next is applied. The drying time is the schedule constraint. The active working time is roughly 20 to 30 hours. The calendar time is 3 to 5 weekends.

The DIY savings on a fully drywalled two-car garage are $2,000 to $3,800 compared to professional installation. The savings are entirely in labor. The material cost is identical. A hybrid approach, where the homeowner hangs the drywall and hires a professional taper to finish the seams, saves roughly half that amount and produces a finish quality that is difficult for a first-timer to match. The taper charges $0.50 to $1.00 per square foot for taping and finishing only.

Frequently Asked Questions

Should I paint garage drywall or leave it unfinished?

Paint it. Unpainted drywall absorbs moisture from the air and from splashes. Within a year, unpainted drywall in a garage develops water stains along the bottom edge, mold spots in humid seasons, and a gray dinginess from accumulated dust that cannot be cleaned. At minimum, apply one coat of PVA primer to seal the surface. A coat of primer plus one coat of flat or satin paint costs $80 to $150 in materials and takes a day to apply. The painted drywall looks acceptable for a decade. The unpainted drywall looks acceptable for about a year.

Should I insulate the walls before drywalling?

If the garage will ever be heated, even occasionally with a space heater, insulate before drywalling. Adding insulation after the drywall is up requires cutting holes in the drywall or removing entire sheets. It is a fraction of the cost and effort to insulate while the studs are exposed. Fiberglass batt insulation for a two-car garage costs $200 to $500 in materials and takes an afternoon to install. The window of opportunity is open. Once the drywall goes up, it closes.

The Garage That Becomes a Room

Drywalling a garage costs $730 to $1,015 in materials for DIY, or $3,000 to $5,500 for professional installation of walls and ceiling at a Level 4 finish. The drywall transforms the garage from exposed studs to smooth, paintable surfaces. The paint that follows is $80 to $150 in materials. The garage goes from a shell that stores cars and boxes to a room with finished walls that reflect light and can be wiped clean. The drywall is the skin. The studs behind it are the bones. The room that was always there underneath the exposed framing is finally visible. The material cost is $730 to $1,015. The transformation is worth considerably more. Whether the garage stays a garage or becomes a gym, a workshop, or a living space, the drywall is what makes it feel finished. The exposed studs had their run. Now the garage has walls.