Asphalt Shingle Roof Replacement cost: Altadena vs San Francisco (2026)
Budget-wise, asphalt shingle roof replacement in Altadena ($10,000) runs 9% less than in San Francisco ($10,950), a roughly $950 spread.
Altadena CA
Lower costTypically around $10,000
San Francisco CA
Typically around $10,950
Altadena vs San Francisco: full breakdown
| Factor | Altadena | San Francisco |
|---|---|---|
| Typical 2026 cost | $10,000 | $10,950 |
| Estimated range | $6,550–$13,400 | $7,150–$14,750 |
| Labor index (vs US) | ×1.09 | ×1.2 |
| Climate zone | Mixed | Mixed |
| Climate factor | ×1 | ×1 |
| Local permit | $325 | $325 |
| Labor share | $6,000 | $6,550 |
| Materials/equipment | $4,000 | $4,400 |
Treat these as 2026 localized estimates for asphalt shingle roof replacement, not quotes from a contractor.
Is the price difference a dealbreaker?
A 9% spread (roughly $950) is significant enough to plan around, but not fixed — off-peak timing and sharper bidding in San Francisco typically recover some of it.
Asphalt shingle roof replacement by type: Altadena vs San Francisco
Each asphalt shingle roof replacement option, priced separately for both metros — the same local labor, climate and permit adjustments applied per city, so you can compare like for like.
| Type | Altadena | San Francisco |
|---|---|---|
| 3-tab shingles | $6,550–$11,250 | $7,150–$12,350 |
| Architectural shingles | $7,950–$13,400 | $8,750–$14,750 |
Asphalt shingle roof replacement numbers here are 2026 planning ranges, adjusted per city — useful for budgeting, not a substitute for an actual quote.
Asphalt shingle roof replacement by roof size: Altadena vs San Francisco
Roofing is priced per 'square' (100 sq ft of roof). A roof is bigger than the home's footprint because of pitch and overhangs — a 2,000 sq ft home often has a 2,200–2,600 sq ft roof. Asphalt runs about $3–$5 per sq ft installed.
| Size | Altadena | San Francisco |
|---|---|---|
| 1,000 sq ft (10 squares) | $4,450–$7,950 | $4,900–$8,750 |
| 1,500 sq ft (15 squares) | $5,800–$10,700 | $6,350–$11,750 |
| 2,000 sq ft (20 squares) | $6,550–$13,400 | $7,150–$14,750 |
| 2,500 sq ft (25 squares) | $8,500–$15,600 | $9,350–$17,150 |
| 3,000 sq ft (30 squares) | $10,150–$18,900 | $11,150–$20,750 |
| 3,500+ sq ft (35 squares) | $11,800–$22,150 | $12,950–$24,350 |
These are 2026 planning figures for asphalt shingle roof replacement, localized to each city — not formal quotes.
What roofing pros earn in each metro
Since labor accounts for around 60% of what a asphalt shingle roof replacement job costs, it's the biggest lever behind any price gap between cities. What you're seeing below is actual BLS metro wage data for skilled installers — not a guess.
Los Angeles-Long Beach-Anaheim metro · about 15% above the US average installer wage.
San Francisco-Oakland-Fremont metro · about 34% above the US average installer wage.
Source: U.S. Bureau of Labor Statistics, OEWS metro wages for HVAC installers (used as a trade-labor index).
Cheapest time for asphalt shingle roof replacement in either city
Shingles seal properly only in warm, dry conditions, which is exactly when everyone else wants a new roof too — especially right after a summer hailstorm. Lock in a late-fall or winter booking for a spring install and you skip that rush.
Where does a smart roofing budget go in 2026?
Roofing budgets swing on decisions most homeowners don't think to ask about — overlay vs. tear-off, shingle tier, deck condition. Our editors break down each one.
The value case
Architectural shingles hit the sweet spot — far more durable than 3-tab for a modest premium, and far cheaper than metal or tile. For most homes they're the right default.
The risk case
Budget for the unknown: rotten decking found at tear-off is the most common surprise. Get the per-sheet repair rate in writing up front so a "cheap" bid doesn't balloon mid-job.
The do-it-right case
Pay for a full tear-off and quality underlayment, flashing and ventilation. An overlay saves money today but traps heat, voids some warranties and costs more at the next replacement.
Insist on tear-off over overlay, get the deck-repair rate in writing before work starts, and lean toward architectural shingles. Skipping any of the three tends to cost more later than it saves now.
Altadena vs San Francisco
Is asphalt shingle roof replacement cheaper in Altadena or San Francisco?
Altadena comes out ahead here, at roughly $10,000 for asphalt shingle roof replacement compared with $10,950 in San Francisco — a 9% ($950) gap as of 2026.
Why does asphalt shingle roof replacement cost more in San Francisco than Altadena?
The main driver is local labor rates: San Francisco's labor index is 1.2 versus 1.09 in Altadena. Climate zone (mixed vs mixed) also shift the total.
How much is asphalt shingle roof replacement in Altadena, CA?
Altadena homeowners can expect $6,550 to $13,400 for asphalt shingle roof replacement in 2026, with $10,000 the typical number.
Do roofing pros really charge more in one city?
It's not a myth — BLS data puts installer wages at about $35.9/hr in the Los Angeles-Long Beach-Anaheim area and $41.6/hr in San Francisco-Oakland-Fremont. Given labor is around 60% of a asphalt shingle roof replacement job's cost, that gap explains most of the price spread.
When is the cheapest time to buy asphalt shingle roof replacement — and does it differ by city?
Timing doesn't change by city here — Late spring to early fall (dry, 45–85°F) is the cheapest window in both Altadena and San Francisco, saving roughly 5–10%. Avoid mid-winter and the post-storm rush in either location, when emergency replacements push prices up.
Should I choose where to live based on asphalt shingle roof replacement cost?
Rarely. The $950 difference is real but one-time, and you can often close most of it in San Francisco by buying in the off-season and getting tighter, apples-to-apples bids. Ongoing factors — energy prices, climate and home condition — matter more over the life of the system.
Compare asphalt shingle roof replacement in other cities
Updated June 2026 · By Serhat Özçelik