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Mercer Roofing Co San Diego roofing team

Roof Replacement Cost - Written Price, Workmanship Warranty

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How Much Does Roof Replacement Cost in San Diego?

Roof replacement in San Diego typically costs between $11,500 and $28,000 for a standard single-family home in 2026, with most homeowners paying around $18,000 for a full tear-off and architectural shingle install. Smaller homes under 1,200 square feet can land closer to $9,000, while larger homes with premium materials like tile or metal routinely exceed $35,000. Call (619) 810-5520 for a written, line-item quote before any work starts, because the exact figure depends on your roof’s size, pitch, material, and condition.

Key Takeaways

  • Typical range: $11,500 to $28,000 for a full roof replacement in San Diego, with most homes landing around $18,000.
  • Per-square-foot cost: $5.50 to $9.50 for asphalt shingles installed; tile and metal run $12 to $22 per square foot.
  • Biggest cost drivers: roof size, material choice, tear-off layers, decking repair, and San Diego permit fees.
  • Timeline: Most replacements take 1 to 3 days, depending on crew size and weather.
  • Free estimate: Mercer Roofing Co San Diego provides a written price before work begins. Call (619) 810-5520.

Roof Replacement Cost Breakdown (2026)

Here’s what a roof replacement in San Diego actually costs, broken down by line item. These figures reflect what we see across neighborhoods like Clairemont, La Mesa, Chula Vista, and Oceanside as of 2026.

Cost Component Typical Range (San Diego) Notes
Asphalt shingle tear-off and install $5.50 – $9.50 per sq ft Most common choice for San Diego homes; includes 30-year architectural shingles from GAF, CertainTeed, or Owens Corning.
Concrete or clay tile $12 – $20 per sq ft Popular in Mission Hills, Point Loma, and Spanish-style homes; heavier, so roof structure may need reinforcement.
Standing seam metal $14 – $22 per sq ft Reflective and fire-resistant, good for wildfire-prone areas like Scripps Ranch and Rancho Bernardo.
Roof decking repair/replacement $75 – $120 per sheet Replacing rotted plywood or OSB sheathing; common in coastal areas with moisture exposure.
Underlayment upgrade $0.60 – $1.50 per sq ft Synthetic or peel-and-stick underlayment; required for tile in most San Diego jurisdictions.
Flashing replacement $400 – $1,200 total Pipe boots, chimney flashing, valley flashing; prevents the #1 source of roof leaks.
San Diego permit fees $350 – $700 Varies by city; most San Diego County municipalities require a permit for full replacements.
Old roof disposal $500 – $1,100 Dumpster rental and hauling fees for the tear-off debris.
Skylight replacement (if applicable) $900 – $2,500 per unit Best done during re-roofing to avoid future flashing leaks.
Gutter replacement (if needed) $1,800 – $4,500 Seamless aluminum gutters; often done alongside roof work.

That’s the line-by-line picture. For a 1,800 square foot single-story home in Scripps Ranch with a simple 4/12 pitch and architectural shingles, a full tear-off and replacement typically runs $12,000 to $16,000 including permit fees and disposal. The same home with concrete tile in Point Loma runs $25,000 to $36,000, largely because tile materials cost more, install slower, and often require structural reinforcement.

What Affects Roof Replacement Pricing in San Diego

  • Roof size and complexity: A 1,400 square foot ranch in Clairemont costs far less than a 3,200 square foot two-story in Rancho Peñasquitos with multiple valleys, dormers, and a steep pitch. Every additional plane, valley, and angle means more flashing, more labor, and more material waste.
  • Material choice: Asphalt shingles are the budget option, while tile and metal both carry a premium. In San Diego, concrete tile still dominates coastal and Spanish-style architecture, but its weight sometimes demands structural upgrades, which pushes the total higher.
  • Number of existing layers: If your home already has two layers of shingles, both must come off before a new roof goes on. This doubles tear-off labor and disposal volume, adding $1,500 to $3,500 to the job.
  • Decking condition: San Diego’s marine layer keeps coastal areas damp, and we frequently find rotted plywood under old roofs in Ocean Beach, Pacific Beach, and Imperial Beach. Replacing decking runs $75 to $120 per sheet, and a severely compromised roof can need 10 to 20 sheets replaced.
  • Permit and inspection requirements: San Diego city and county both require permits for roof replacements. Fees vary by jurisdiction, and some areas like Coronado and Del Mar have additional coastal development restrictions that add time and paperwork to the process.
  • Access and site conditions: Tight lots, steep driveways, and homes with limited street frontage make material delivery and debris removal harder. In older neighborhoods like North Park and South Park, narrow alleys and close property lines often mean smaller loads and more handling time.

How Much Does Roof Replacement Cost by Material in San Diego?

Material choice is the single biggest pricing lever you control. Here’s what each option costs for a typical 1,800 square foot home in San Diego as of 2026.

  • 3-tab asphalt shingles: $9,500 to $13,000 total. Cheapest option with a 20-25 year lifespan. Rarely installed anymore; most San Diego homeowners upgrade to architectural shingles for a marginal cost difference.
  • Architectural asphalt shingles: $12,000 to $17,000 total. The default choice, offering a 30-year lifespan, better wind resistance, and a dimensional look. Brands we install include GAF Timberline, CertainTeed Landmark, and Owens Corning Duration.
  • Concrete tile: $22,000 to $36,000 total. Standard for Mission-style homes and many HOAs in San Diego. 50+ year lifespan but requires professional installation; any cracked or misaligned tile invites leaks.
  • Clay tile: $28,000 to $45,000 total. Lighter than concrete and more visually distinctive, but also more fragile and labor-intensive to install. Most common in upscale areas like La Jolla and Rancho Santa Fe.
  • Standing seam metal: $25,000 to $40,000 total. Fire-resistant and highly reflective, which helps with cooling during San Diego’s inland heat waves. Good for homes in wildland-urban interface zones.

Is It Cheaper to Repair or Replace?

If the damage is isolated – a few missing shingles, a single leak around a pipe boot, or flashing failure at one chimney – repair is almost always cheaper, typically $350 to $1,200. But once your roof has widespread granule loss, curling shingles, leaks in multiple locations, or has passed 20 years in age, replacement is the financially smarter move. Patching an aging roof repeatedly costs more per square foot than a full replacement, and it doesn’t stop the underlying deterioration. At Mercer Roofing, every repair comes with a written guarantee, and if a repair fails within 365 days, we return and fix it free. That’s the 365-Day Done Right Promise, and we put it in writing before any work starts.

San Diego Specifics: What the Climate Does to Your Roof

San Diego’s mild climate lulls homeowners into thinking roofs last forever here. They don’t. The marine layer deposits moisture on coastal roofs nightly in areas like La Jolla, Del Mar, and Encinitas, feeding moss and algae growth on shaded north-facing slopes. Inland, the sun is the bigger enemy. In neighborhoods like El Cajon, Santee, and Poway, summer temperatures routinely reach 90 to 100 degrees, and that UV exposure breaks down shingle granules faster than rain ever will.

We also get Santa Ana winds in the fall. A roof installed with substandard nailing or worn underlayment loses shingles the moment a 50 mph gust hits the eaves and rake edges. If you’re in a wind-exposed area like Alpine or Lakeside, we recommend architectural shingles with a high wind rating, secured with ring-shank nails rather than staples.

Then there’s the fire risk. Large parts of San Diego County sit within designated Very High Fire Hazard Severity Zones, and in those areas, the California Building Code requires Class A fire-rated roofing materials or an approved assembly. If your home is in Ramona, Julian, or parts of Escondido, you don’t just want a fire-resistant roof – you often need one to comply with code and keep your insurance policy valid.

How the Mercer Roofing Estimate Process Works

We don’t do ballpark phone quotes. We do written estimates, and here’s why that matters: a roof replacement is a five-figure purchase, and you should know exactly what you’re paying before any material shows up at your house. When you call (619) 810-5520, a live person answers, 24/7 – not a voicemail, not a callback form. We schedule a visit, and before any technician arrives, we send you their name and photo. When they knock, they wear a clean uniform and present a photo ID badge. Every Mercer Roofing technician is background-checked and identity-verified through the Threshold Verified standard, the quality framework that every independently owned Threshold Group location is contractually held to.

During the estimate, we walk the roof, check the decking from the attic when accessible, evaluate flashing and ventilation, and measure the roof precisely. Then we hand you a written line-item price covering materials, labor, permits, tear-off, disposal, and any needed decking repair. That price is the price. No surprises on the invoice. We’ve operated this way since Mercer Roofing was founded in 2000, and it’s the same standard we’ve applied across the Threshold Group family of home-service companies ever since.

What the 365-Day Done Right Promise Covers

Every roof we install and every repair we make comes with the 365-Day Done Right Promise in writing. If anything we did isn’t done right within a year, we make it right, at no charge to you. For repairs specifically, we include a free second visit if the repair fails. This isn’t boilerplate language on a contract. It’s a specific, dated warranty that we hand to you alongside your written estimate and final invoice.

We also work with manufacturer-recognized shingle brands: GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. Manufacturer warranties cover material defects; our 365-Day Done Right Promise covers workmanship. You get both, in writing.

How to Save on Roof Replacement in San Diego

  • Time your project in the off-season: Roofing demand spikes every summer in San Diego, and despite the mild weather, winter and early spring often bring slightly better pricing and faster scheduling. If your roof can wait, you may save 5 to 10 percent by scheduling between November and February.
  • Replace flashings and pipe boots at the same time: These are cheap parts but expensive to access. Doing them while the roof is already open adds maybe $400 to $1,200 – far less than the $800 to $2,000 it costs to repair a leak from a failed pipe boot after the fact.
  • Get multiple written estimates: San Diego has hundreds of roofing companies, and pricing varies widely. Ask each one for a written, line-item estimate. If a company won’t put it in writing, walk away. A written price protects you from surprise charges at the end.
  • Check your insurance policy: If your roof was damaged by a named storm, high wind, or hail, your homeowner’s insurance may cover part of the replacement cost. San Diego sees enough wind-driven events each year that this path is worth exploring before you pay out of pocket.
  • Ask about decking replacement contingency: Some roofers quote low and then inflate the final bill when they “discover” rotted decking. Get a written price that includes a per-sheet decking rate upfront. You’ll know exactly what any needed decking replacement costs, with no after-the-fact negotiation.
  • Call Mercer Roofing Co San Diego for a free estimate: We provide a written, no-obligation price before any work begins. Call (619) 810-5520 and talk to a live person, any hour, any day.

Can You Get a Roof Replacement the Same Week?

It depends on the season and your specific situation, but yes, it’s often possible. During slower months, we routinely schedule full roof replacements within 5 to 10 days of the estimate. Summer is busier, and the wait can stretch to 2 to 3 weeks. Emergency repairs are different – if water is entering your home, we prioritize getting your roof watertight immediately, often same-day. Call (619) 810-5520 and a live person will let you know exactly how soon we can get a crew to your home in Rancho Peñasquitos, Chula Vista, or wherever you are in San Diego County.

FAQs – Roof Replacement Cost

How much does a roof replacement cost in San Diego in 2026?

Most San Diego homeowners pay between $12,000 and $20,000 for a full asphalt shingle roof replacement on a typical 1,500 to 2,200 square foot home. Smaller homes run $9,000 to $12,000, while larger homes with tile or metal materials exceed $30,000. Call (619) 810-5520 for a free written estimate with exact pricing for your roof.

Is it cheaper to repair or replace a roof?

Repair is cheaper for isolated damage: $350 to $1,200 for a typical repair versus $12,000+ for a full replacement. But if your roof is over 20 years old, has widespread granule loss, or leaks in multiple places, replacement is the better long-term value. We’ll tell you honestly which makes sense for your roof.

How much does roof decking replacement cost in San Diego?

Decking replacement runs $75 to $120 per 4-by-8-foot sheet, including material and labor. Most homes need 0 to 10 sheets replaced during a reroof, though coastal homes in damp areas like Ocean Beach sometimes need far more. Get a written per-sheet rate before work begins so you know exactly what decking replacement will cost.

Can you replace a roof in one day?

Yes, on simple single-story homes with an asphalt shingle re-roof and a full crew, one-day replacement is achievable. Most homes take 1 to 2 days, with tile and metal installs running 3 to 5 days. Mercer Roofing schedules a specific crew for your job and tells you the timeline upfront.

What permits are required for roof replacement in San Diego?

Most San Diego County cities require a building permit for a full roof replacement, with fees typically running $350 to $700. The permit covers inspection of the decking, underlayment, and final roof assembly. Mercer Roofing handles permitting for every replacement we install. Call (619) 810-5520 with questions about your specific jurisdiction.

How much does a tile roof replacement cost in San Diego?

A concrete tile roof replacement in San Diego typically runs $22,000 to $36,000 for an average home, while clay tile runs $28,000 to $45,000. Tile requires careful handling, specialized underlayment, and sometimes structural reinforcement, all of which add to the final price compared to asphalt shingles.

Pricing reflects the San Diego market as of 2026. Mercer Roofing Co San Diego offers free estimates – call (619) 810-5520.

What Our Customers Say

★★★★★ 5.0 from 3+ reviews

"Honest inspection. He went up, took photos, and told me I had maybe five more years instead of selling a full replacement."

- Xavier L.

"Leak showed up in the hallway ceiling after a big storm. They found the failed pipe flashing in about ten minutes, replaced it, and checked the attic for wet insulation."

- Sophie R.

"Roofer showed his ID and gave me the crew lead's name before anyone climbed the ladder. Replaced a patch of missing shingles and resealed two vent boots. Written estimate matched the final bill."

- Brian J.
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