You’re getting quotes for a metal roof and the numbers are all over the map. One contractor says $18,000. Another says $52,000. Both are probably right — for very different jobs. Understanding what separates those numbers is the only way to know whether a quote is fair or inflated.
Average installed cost ranges in San Diego County
Here’s the honest range for a metal roof installed in San Diego County in 2026:
| System | Installed cost per square foot | Installed cost per square (100 sq ft) |
|---|---|---|
| Corrugated steel (exposed fastener) | $8 – $13 | $800 – $1,300 |
| Stone-coated steel | $12 – $18 | $1,200 – $1,800 |
| Standing seam steel | $16 – $24 | $1,600 – $2,400 |
| Standing seam aluminum | $20 – $28 | $2,000 – $2,800 |
| Standing seam copper | $28 – $45+ | $2,800 – $4,500+ |
A typical San Diego home runs 20 to 28 squares (2,000–2,800 sq ft of roof surface). That puts a steel standing seam job on a 2,200 sq ft roof at roughly $35,000–$53,000 all in. A corrugated steel job on the same house lands closer to $18,000–$29,000.
Those totals include labor, underlayment, flashing, and a basic tear-off of one existing layer. If your roof has two layers of shingles or a tile overlay, add more — we’ll cover that below.
Our metal roofing installation service covers every panel type in the ranges above. If you want a number specific to your address, a quick site visit is the only real way to get one.
What drives the price (panel type, gauge, pitch, tear-off)
Four variables control most of the swing in metal roofing quotes.
Panel type and profile. Standing seam costs more to fabricate and install than corrugated. The clips, seams, and concealed fasteners take more hands-on time. Corrugated panels screw down fast but leave exposed fastener points that need eventual maintenance.
Steel gauge. Thicker metal costs more upfront and lasts longer. Most residential standing seam jobs use 24-gauge steel. Going to 22-gauge adds maybe $1–$2 per square foot but meaningfully improves dent resistance — worth considering in areas near Barona, Alpine, or anywhere with regular hail. Aluminum panels are typically rated by thickness in inches rather than gauge; .032” is standard residential, .040” is commercial-grade.
Roof pitch. Anything above a 6:12 pitch adds labor because crews need different equipment and slower movement. A steep 10:12 or 12:12 roof in Tierrasanta or La Mesa can add 20–30% to the labor line.
Tear-off and decking. Tearing off an existing asphalt shingle layer runs $80–$150 per square in San Diego. If your deck has rot, soft spots, or damaged sheathing underneath, add $3–$6 per square foot for decking repairs. Most City of San Diego permits also require a full inspection at this stage — budget time, not just money.
One more cost most quotes underquote: flashing and pipe boot work. A metal roof requires custom flashing at every penetration and wall transition. On a complex roofline, that’s several hundred dollars of additional material that cheaper quotes often leave off.
Standing seam vs. corrugated vs. stone-coated cost differences
These three systems are the most common metal roofing choices in San Diego. Each makes sense in different situations.
Standing seam is the premium option for a reason. Concealed fasteners mean no exposed screws to back out or leak over time. The panels float on hidden clips, so the steel can expand and contract through San Diego’s temperature swings without pulling the fasteners loose. If you’re near the coast — Coronado, Ocean Beach, Pacific Beach — the concealed system also means fewer entry points for salt-laden air. Expect $16–$24 per square foot for steel, $20–$28 for aluminum.
Corrugated steel (exposed fastener) makes the most sense for simple shed roofs, accessory dwelling units, garages, and agricultural buildings. The installed price at $8–$13 per square foot is hard to beat. The tradeoff is that the rubber washers on each fastener eventually harden and crack — typically 15–20 years in — and the roof will need a re-fastening or sealant pass. On a primary residence, that maintenance cadence matters. On a rental garage, it’s usually a fine trade.
Stone-coated steel sits in the middle on cost ($12–$18/sq ft) and appearance. It looks like tile or dimensional shingles from the street but weighs a fraction of tile — usually 1.4–1.8 lbs per square foot versus 9–12 lbs for concrete tile. That makes it popular on older San Diego homes where the framing wasn’t built for a tile load. The stone coating adds some noise dampening too, which standing seam panels lack without an acoustic underlayment.
For a side-by-side look at how metal systems stack up against asphalt in terms of durability and maintenance, our metal vs. shingle comparison goes deep on that question.
How a metal roof pencils out against shingle over 30 years
A 30-year architectural shingle roof installed in San Diego runs $6–$10 per square foot. At 22 squares, that’s roughly $13,000–$22,000 installed. Metal standing seam on the same house runs $35,000–$53,000. The gap looks steep until you run the full 30-year math.
Here’s what the shingle scenario actually costs over three decades:
- Year 0: $17,000 install (midpoint estimate)
- Year 12–15: $1,500–$3,000 in repairs (flashings, ridge caps, minor leaks)
- Year 25–28: Full replacement, another $20,000–$28,000 (costs escalate with inflation and labor)
- Total 30-year outlay: $38,500–$48,000
A standing seam metal roof installed today carries a manufacturer warranty of 40–50 years on most steel panels and often a lifetime warranty on aluminum. With proper maintenance — mainly keeping debris off the panels and checking flashings every few years — the roof you put on in 2026 may still be on the house in 2066.
Total 30-year outlay for metal: $44,000 installed (midpoint) + minimal maintenance. You break even around year 22–25, and every year after that is money you’re not spending on shingles.
Energy savings add to that math. Metal roofs with cool-roof-rated finishes can qualify under California Title 24 energy standards and may qualify for ENERGY STAR certification. Reflective panels reduce attic heat gain significantly in San Diego’s warmer months — some homeowners report 15–20% reductions in cooling loads, though the exact number depends on attic insulation and ventilation.
For a broader look at what new roof installation runs in San Diego across all materials, the 2026 San Diego roof cost guide has a detailed breakdown.
When metal pays off fastest in coastal vs. inland zones
San Diego County has two very different roofing environments, and metal performs differently in each.
Coastal zones — roughly from the shoreline to about 5 miles inland — deal with salt air, marine layer moisture, and moderate temperatures year-round. Asphalt shingles in these areas tend to degrade faster than the manufacturer’s rated life. Granule loss, algae, and flashing corrosion show up earlier near the water. We’ve seen 20-year shingles in Ocean Beach and Mission Hills fail at 14–16 years. Our coastal salt damage data post covers exactly how fast this happens.
For coastal homes, aluminum standing seam makes the strongest case. Steel will work fine with a quality PVDF coating, but aluminum doesn’t rust, period. The premium over steel ($3–$5 per square foot) buys you total immunity to salt corrosion. On a 25-square coastal home, that’s roughly $7,500–$12,000 extra — but you’re eliminating the single biggest failure mode in that environment.
Inland zones — El Cajon, Santee, Alpine, Escondido, Ramona — run hotter in summer, cooler at night, and drier overall. The bigger threat here is UV degradation and thermal cycling. Asphalt shingles handle this somewhat better than coastal conditions, but the temperature swings are wider. A 26-gauge steel standing seam roof with a quality Kynar/PVDF finish handles 180°F surface temperatures without issue. It’s also the better wildfire choice. Inland San Diego sits in high ember-exposure zones, and Class A fire-rated metal outperforms Class A shingles in sustained ember exposure — something worth weighing if your home is near any of the fire-prone corridors east of I-15.
The payback timeline inland is a bit longer than coastal, mainly because shingles don’t fail as fast. Expect to break even around year 24–27 on an inland install rather than year 20–23 near the coast.
One caution for any zone: make sure whoever installs your metal roof holds an active California contractor’s license. You can verify a license at the CSLB license check tool before signing anything.
When to call us
Metal roofing isn’t a DIY project — the panel fabrication, clip spacing, and flashing details all require licensed hands and the right bending equipment. If you’re comparing quotes, getting a permit pulled through San Diego County, or just trying to figure out whether metal makes sense for your specific home, we can walk you through it without a sales pitch. Call us at (858) 808-6055 for a same-day estimate.