Double carport kit prices typically range from $2,000 to $10,000 for the structure, while a professionally installed project often totals $5,000 to $18,000. Size, steel or wood construction, roof and wind ratings, site preparation, and local labor rates drive the final estimate.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Kit only | $2,000 | $5,500 | $10,000 | Common steel kits, before installation |
| Installed project | $5,000 | $10,000 | $18,000 | Kit, assembly, and typical anchoring |
| Price per covered sq ft | $4 | $9 | $16 | Varies by material, size, and installation scope |
What a 20-by-20 double carport kit usually costs
A basic 20-by-20-foot galvanized steel kit commonly costs $2,000-$4,500, or about $5-$11 per covered square foot. A larger 20-by-30-foot kit may run $3,000-$7,000, with heavier framing, enclosed sides, or upgraded finishes pushing prices higher. Wood kits and custom-engineered structures often start around $5,000 and can exceed $10,000 before labor.
Installed totals commonly land at $5,000-$12,000 for a standard steel carport on a prepared site. A large, snow-rated, or custom-finished project can reach $18,000 or more. Assumptions: Midwest pricing, open-sided steel structure, normal access, and no major concrete or drainage work. For a typical double-car steel kit, budgeting about $5,500 for the kit and $10,000 installed is a reasonable starting point.
Steel panels, posts, and crew labor in a quote
Kit quotes should identify the frame, roof panels, fasteners, bracing, and anchoring hardware. Installation estimates may separate assembly from site work, concrete, delivery, or local approvals. The ranges below are typical planning figures, not fixed national rates.
| Quote component | Typical range | What it covers | Pricing basis |
|---|---|---|---|
| Steel frame and roof kit | $2,000-$7,000 | Posts, beams, panels, hardware | $5-$12 per sq ft |
| Assembly labor | $1,200-$4,000 | Leveling, framing, roof installation | $50-$100 per crew-hour |
| Anchors and concrete | $300-$2,500 | Ground anchors or small footings | $15-$35 per anchor, or more for concrete |
| Delivery and site work | $200-$2,000 | Freight, grading, access preparation | Distance and site dependent |
Check whether the quoted kit includes anchors and whether labor includes layout, leveling, and cleanup.
How width, roof pitch, and snow rating change pricing
Width and length affect both material quantities and engineering requirements. A 20-by-20-foot canopy is a different budget from a 24-by-30-foot structure, which covers 720 square feet rather than 400. That extra area can add roughly $1,500-$4,000 to a standard kit, depending on gauge and design.
Wind and snow loads can change the frame, bracing, roof panels, and required foundations. In areas requiring a 30-40 pounds-per-square-foot snow load, a reinforced kit may cost 15%-35% more than a basic model. Roof pitch, side panels, enclosed storage, and a taller clearance for trucks can add another $500-$3,000. Confirm the local design load before comparing kit prices; a low quote may specify a lighter structure.
Installed kit, DIY assembly, or custom-built carport
DIY assembly can avoid $1,200-$4,000 in professional labor, but it requires suitable tools, careful layout, and enough people to lift long beams and roof sections. Manufacturers may specify a crew of three or four, and assembly can take 10-20 hours for a basic kit. Complex or larger structures may take longer.
A professionally installed kit offers a clearer labor responsibility but does not necessarily include grading, slab construction, or electrical work. Custom construction is usually more expensive than a standard kit, especially with wood framing, architectural matching, or enclosed sides. Compare the installed scope—not just the advertised kit price—when weighing DIY against contractor assembly.
What delivery, anchors, and permits add to the bill
Freight for a long or heavy kit may cost $200-$1,000, with remote delivery or special unloading adding more. Ground anchors can add $150-$700 for a typical structure; concrete footings or a slab may cost $1,000-$5,000 or more, depending on area, thickness, reinforcement, and local concrete rates. Removing an old carport can add $300-$1,500.
Permit charges vary by city and project scope, often ranging from $50-$500, while engineered drawings or inspections can raise the total. Some jurisdictions require setbacks, a specific foundation, or plans showing wind and snow capacity. Ask the building department about permit and setback requirements before ordering a kit that may not meet local rules.
Installation hours and regional rate differences
A straightforward open-sided kit often takes a small crew 10-20 hours to assemble, excluding grading or slab work. Contractor labor rates commonly fall around $50-$100 per crew-hour, though some installers quote a flat job price. Urban markets and high-cost coastal areas may run 10%-25% above a national middle estimate; rural areas can be 5%-15% lower but may incur extra travel or delivery charges.
Site access also changes labor time. A level driveway with space for materials is simpler than a sloped yard, narrow side access, or a location with buried utilities. Request separate prices for assembly, foundation work, delivery, and site preparation so regional differences are easier to compare.
Three double-carport quotes by size and finish
These examples show how size and scope can shift the total. They assume normal access and typical U.S. contractor pricing; local engineering and site requirements may change the figures.
| Project | Kit price | Labor and extras | Estimated total |
|---|---|---|---|
| 20-by-20 basic steel, anchors | $3,200 | $2,000-$3,000 | $5,200-$6,200 |
| 20-by-30 reinforced steel, 15 crew-hours | $5,500 | $3,000-$4,500 | $8,500-$10,000 |
| 24-by-30 upgraded finish, concrete footings | $8,000 | $5,000-$8,000 | $13,000-$16,000 |
Use the total that matches the same dimensions, load rating, foundation, and installation scope—not the lowest line-item price.
Where to trim cost without undersizing the structure
Choose the smallest dimensions that safely fit both vehicles, door openings, and required clearance. A 20-by-20-foot layout may work for two compact cars, while larger vehicles or storage needs can call for added length or width. Avoid paying for decorative trim or enclosure panels that do not serve a practical purpose.
Compare at least three written quotes using the same size, frame gauge, roof material, load rating, anchors, and warranty terms. If the existing base is sound and level, ask whether it can be reused rather than replaced. Schedule delivery when access is clear, and verify whether the price includes unloading and debris removal. Keep structural ratings and required permits intact; savings should come from controlled scope, not weaker framing or omitted anchoring.