The cost to enlarge a garage door opening typically runs $2,000-$12,000, with an average near $6,500 for a structural change and standard replacement door. A wider conversion, masonry work, electrical relocation, or difficult access can push the quote above $15,000.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Enlarge opening and install door | $2,000 | $6,500 | $15,000+ | Structural framing, finish repairs, and door allowance |
| Labor | $800 | $2,500 | $6,000 | Depends on crew, wall type, and project duration |
| New garage door | $700 | $1,500 | $4,000+ | Basic steel through insulated or custom styles |
What a wider garage opening usually costs
For a straightforward widening of a single-car opening, homeowners often pay $2,000-$5,000 when the wall is wood-framed, the opening changes by a few feet, and no major wiring or exterior masonry needs work. Converting a single door to a standard double door commonly costs $5,000-$12,000, including structural framing and a new door. A brick or block wall, custom door, or substantial finish work can bring the total to $15,000-$25,000.
Most typical estimates assume a standard steel door and an accessible, wood-framed garage wall. The average above reflects a moderate opening change, contractor labor, and ordinary trim repairs; it is not a fixed national rate.
Assumptions: U.S. pricing, standard materials, normal access, and no major foundation or roof changes.
How framing, doors, and finish work shape the quote
Quotes combine structural work with the door and repairs around the new opening. Ask whether the estimate includes engineering, removal, disposal, electrical changes, and interior and exterior finish repairs, since exclusions can make two bids look deceptively different.
| Quote item | Typical price | What changes the charge |
|---|---|---|
| Engineering or structural review | $300-$1,000 | Header span and local requirements |
| Framing and new header | $700-$2,500 | Opening width, load, and wall construction |
| Door and tracks | $700-$4,000+ | Steel, insulation, windows, and custom sizing |
| Electrical and opener changes | $200-$1,200 | Outlet, wiring, sensor, or opener relocation |
| Siding, drywall, and trim repairs | $300-$2,000 | Exterior material and amount of finish work |
Door and framing prices are separate in some bids, so confirm the installed total before comparing quotes. Disposal may add $100-$400, while painting or extensive siding replacement may be priced separately.
Opening width and header span can change structural costs
Changing a 8-foot opening to 9 feet is generally less involved than converting it to a 16-foot double-door span. Wider spans may require a larger engineered header, temporary supports, and more crew time. A header upgrade can add roughly $500-$2,500 beyond basic framing; unusually long spans or loads above the garage can cost more.
Wall construction also matters. A wood-framed wall is usually less expensive to alter than brick or concrete block, where cutting, lintel work, and matching exterior materials can add $1,000-$5,000. If the garage has a room above it, a structural review is especially important.
Measure the existing clear opening and specify the desired finished width and height. Standard single doors are often 8-9 feet wide, while double doors are commonly 16 feet; the finished opening must match the selected door manufacturer’s requirements.
What three common garage conversions may cost
These examples show how scope changes the estimate. They assume ordinary access and contractor-installed work; local labor and door choices can shift totals. The labor calculation is a planning aid, not a substitute for a written quote.
| Project example | Labor assumption | Door and materials | Estimated total |
|---|---|---|---|
| Widen opening 1 foot, wood frame | 12-18 hours at $75-$125 per hour | $700-$1,500 | $2,000-$4,500 |
| Convert single to 16-foot double opening | 24-40 hours at $75-$125 per hour | $1,200-$3,000 | $5,000-$12,000 |
| Widen masonry opening with finish repairs | 32-55 hours at $85-$150 per hour | $1,500-$4,000 | $9,000-$20,000 |
Labor rates and hours are illustrative, and structural work can require additional specialty trades.
Permits and masonry work add separate project expenses
Permit fees often range from $100-$500, but some jurisdictions require plans or engineering review that brings the total documentation expense to $300-$1,500. Rules vary by city and county, particularly when the opening changes a load-bearing wall or exterior appearance. Confirm permit responsibility with the contractor before work begins.
Brick cutting, block removal, lintel installation, and patching commonly add $1,000-$5,000 compared with a simple wood-frame alteration. Electrical relocation may add $200-$1,200 if outlets, lights, sensors, or opener wiring interfere with the new framing. Water damage or concealed wiring can create additional charges once the wall is opened.
Get permit fees and likely wall repairs listed as separate line items. That makes it easier to identify allowances and understand what could trigger a change order.
Labor time and regional rates affect the final estimate
A basic wood-frame widening may take one to two workdays; a conversion involving a new header and door often takes two to four days. Masonry, custom fabrication, inspections, or weather-sensitive exterior repairs can extend the schedule to a week or longer. Door availability may add a separate wait before installation.
Labor and contractor pricing in high-cost coastal metros can run about 15%-30% above a national baseline. Smaller Midwestern or Southern markets may be 5%-15% below it, while rural areas can face higher delivery or mobilization charges. These are broad comparisons, not guaranteed local adjustments.
Request a site-specific quote that separates labor, materials, and travel or delivery fees. Assumptions: Regional differences reflect typical labor and overhead variation, not door discounts.
Compare a wider single door with a double-door conversion
Widening an existing single door by a foot or two may cost less than creating a full double opening, especially if the current door still fits the planned dimensions. A new standard single steel door can cost $700-$1,500, while a double steel door often costs $1,200-$3,000 before installation. Insulated doors, windows, decorative overlays, or nonstandard sizes raise material costs.
Keeping the existing opening and replacing only a damaged door can avoid structural work, often saving several thousand dollars. That option works only if the current width and height meet vehicle and access needs. A professional should verify that the door, tracks, opener, and framing are compatible before any reuse.
Compare the cost of a modest widening against the full double-door conversion before choosing a scope. The lower initial price may be worthwhile if it provides adequate clearance without requiring a much larger header.
Control the opening size and finish choices to reduce cost
Choose a standard door size before framing begins, since custom widths and heights can increase the door price and complicate installation. Keep the opening change limited to the clearance actually needed, and avoid moving lights, outlets, or the opener unless the new layout requires it. Reusing sound trim or limiting siding replacement can also reduce finish expenses.
Obtain at least three written bids based on the same finished dimensions and door specifications. Ask each contractor to state whether engineering, permits, disposal, painting, and electrical work are included. Schedule the work with enough lead time to avoid rush charges, and have the wall inspected before approving allowances for hidden conditions.
The most reliable savings come from a defined scope and apples-to-apples quotes, not from omitting structural review. A licensed contractor can identify when a larger header or permit is necessary before demolition starts.