Metal garage vs. wood-framed garage
A no-fluff breakdown to help you make the right call — covering cost, durability, maintenance, factory precision vs. on-site build quality, and which is best for your specific situation.
At a glance
Four headline differences before you go any further.
Lower total cost
Cheaper upfront, near-zero maintenance, 40+ year lifespan
More durable
Rated up to 180 mph wind & 90 psf snow — won’t rot, warp, or attract termites
Matching aesthetics
Easier to match traditional homes; such as siding, brick, and trim. This is possible with tubular buildings, but won’t come installed like this.
DIY Accessibility
For Wood the materials available at any hardware store. With Metal buildings materials would be shipped to location, plus the build is typically faster.
Full comparison
| Category | Metal garage | Wood-framed garage |
|---|---|---|
| Upfront cost | $5,500–$18,000+ installed (free delivery & install with Keen’s) | $20,000–$60,000+ with contractor labor |
| 10-year maintenance | Near zero — no painting, no rot, no pest treatments | $3,000–$12,000+ (paint, rot repairs, pest control, re-roofing) |
| Lifespan | 40–60+ years with Galvalume steel | 25–40 years (if well-maintained) |
| Wind resistance | Certified up to 180 mph (ASCE 7-22) | Varies by contractor — rarely engineer-certified |
| Snow load | 30–90 psf rated (engineer-stamped) | Depends on framing design; often 25–40 psf |
| Pest & rot resistance | 100% immune — steel doesn’t rot or attract termites | Vulnerable — requires ongoing treatment |
| Fire resistance | Steel is non-combustible | Wood is combustible; can be treated but not fireproof |
| Installation speed | 1 day (8–12 hours typical) | 1–4 weeks with a contractor |
| Customization | 15 colors, dozens of sizes, doors, windows, lean-tos | Fully custom — any dimension, any exterior finish |
| Curb appeal | Clean modern look; matches contemporary homes well | Matches traditional home styles more naturally |
| Permits required | Similar — typically required over 200 sq ft | Similar — certified drawings often required |
| Insulation | Add-on available; reflective & batt options | Easier to insulate deeply; better thermal mass |
| Resale value | Positive ROI — adds square footage without degrading | Positive ROI if maintained; can hurt value if deteriorated |
| Financing options | RTO (no credit check), $0 down, 0% APR options | Requires contractor financing or home equity loan |
What’s best for your use case?
The right answer depends on what you’re building it for.
Which is right for you?
Answer 3 quick questions for a personalized recommendation.
Real-world cost comparison by size
Side-by-side pricing for the 5 most searched garage sizes. Metal figures include Keen’s free delivery and installation. Wood figures reflect average U.S. contractor bids for comparable stick-frame construction.
Click a Size to Compare Wood vs. Metal Garage Prices:
12×20 garage
The most searched single-car size. Fits one standard sedan or compact SUV with minimal extra room. Popular as a first garage, tight-lot solution, or dedicated motorcycle and lawn equipment shelter.
| Cost item | Metal garage | Wood-framed |
|---|---|---|
| Purchase / build cost | $5,500–$9,000 | $14,000–$22,000 |
| Delivery & installation | FREE | Included in contractor bid |
| Concrete pad (optional) | ~$1,100–$1,500 | ~$1,100–$1,500 |
| Year 1–10 maintenance | ~$0–$500 | $3,000–$8,000 |
| Engineer certification | Included — 180 mph rated | Extra cost, rarely included |
| Estimated 10-yr total | ~$6,000–$9,500 | ~$18,000–$30,000 |
20×20 garage
The classic entry-level 2-car size. Fits two compact vehicles with tight clearance. Fine for smaller cars, but modern trucks and SUVs often feel cramped. High search volume reflects buyers who start here before sizing up.
| Cost item | Metal garage | Wood-framed |
|---|---|---|
| Purchase / build cost | $6,500–$10,500 | $20,000–$35,000 |
| Delivery & installation | FREE | Included in contractor bid |
| Concrete pad (optional) | ~$1,500–$2,000 | ~$1,500–$2,000 |
| Year 1–10 maintenance | ~$0–$500 | $4,000–$9,000 |
| Engineer certification | Included — 180 mph rated | Extra cost, rarely included |
| Estimated 10-yr total | ~$7,000–$11,000 | ~$24,000–$43,000 |
24×24 garage
The most recommended 2-car size in the industry. Comfortable door clearance for trucks and SUVs, room to walk around, and enough depth for a workbench along the back wall. The “do it once, do it right” size for most homeowners.
| Cost item | Metal garage | Wood-framed |
|---|---|---|
| Purchase / build cost | $8,500–$13,500 | $26,000–$48,000 |
| Delivery & installation | FREE | Included in contractor bid |
| Concrete pad (optional) | ~$1,800–$2,500 | ~$1,800–$2,500 |
| Year 1–10 maintenance | ~$0–$500 | $4,500–$10,000 |
| Engineer certification | Included — 180 mph rated | Extra cost, rarely included |
| Estimated 10-yr total | ~$9,000–$14,000 | ~$30,000–$58,000 |
24×30 garage
The go-to choice for buyers who want two vehicle bays plus a real work zone. The extra 6 feet of depth creates a full-width 8–10 ft workspace at the rear — enough for a workbench, tool storage, and compressor without ever moving a vehicle.
| Cost item | Metal garage | Wood-framed |
|---|---|---|
| Purchase / build cost | $9,500–$16,000 | $32,000–$58,000 |
| Delivery & installation | FREE | Included in contractor bid |
| Concrete pad (optional) | ~$2,200–$3,000 | ~$2,200–$3,000 |
| Year 1–10 maintenance | ~$0–$500 | $5,000–$11,000 |
| Engineer certification | Included — 180 mph rated | Extra cost, rarely included |
| Estimated 10-yr total | ~$10,000–$16,500 | ~$36,000–$68,000 |
30×40 garage
The most searched large-format garage size. Fits 3 standard vehicles or 2 vehicles plus an RV bay. The most popular entry point for farms, home-based businesses, and serious workshops. Clear-span interior — no interior posts.
| Cost item | Metal garage | Wood-framed |
|---|---|---|
| Purchase / build cost | $14,000–$26,000 | $55,000–$110,000+ |
| Delivery & installation | FREE | Included in contractor bid |
| Concrete pad (optional) | ~$4,500–$6,500 | ~$4,500–$6,500 |
| Year 1–10 maintenance | ~$500–$1,500 | $8,000–$18,000 |
| Engineer certification | Included — 180 mph rated | Significant extra cost at this scale |
| Estimated 10-yr total | ~$15,000–$27,000 | ~$62,000–$125,000 |
Metal garage pricing reflects Keen’s Buildings installed pricing including free delivery and professional installation. Wood-framed estimates reflect average U.S. contractor bids for comparable specifications. Concrete pad costs shown separately as both structure types require the same foundation. Maintenance estimates based on industry averages for painting, pest/rot treatment, and minor repairs over a 10-year period. Actual costs vary by location, customization, and site conditions.
Factory-built vs. built on site
Metal garages are precision-manufactured in a controlled factory and assembled on your property in a single day — eliminating the measurement errors, weather delays, and workmanship variables that come with building a wood garage from scratch on site.
Designed and built entirely on your property
| Quality factor | Factory-built metal | Site-built wood |
|---|---|---|
| Precision | CNC-machined to spec | Hand-cut, human error margin |
| Weather exposure | None — assembled indoors | Exposed 2–6 weeks during build |
| Engineering sign-off | Licensed P.E. stamps every build | Rarely included; extra cost if required |
| Error correction | Caught and fixed before delivery | Expensive after walls are closed |
| Warranty | 20-year manufacturer warranty | Contractor warranty (1–10 yrs typical) |