Cross-jurisdiction comparison
Deck or Patio costs 7.4× more in Marin County than in Corona
9,662 permits across 16 jurisdictions. Each bar is the median value declared on the filing.
Reading the spread
Across 16 jurisdictions the middle one files a median of $15,640, and 6 of them land within a quarter of that. The gap in the headline is between Marin County and Corona — a difference between cities, not a range to expect inside one.
Within a single city the spread is wider still. Los Angeles runs from $2,501 at the tenth percentile to $80,000 at the ninetieth, 32.0× end to end, while Detroit is the tightest at 6.9×. That is the number worth carrying into a conversation with a contractor: a quote outside your own city's range is worth asking about, and a quote outside another city's tells you nothing.
14 of these 16 jurisdictions cleared 60 permits, which is the bar this site sets before a city may hold either end of a comparison. The rest are shown because their own page is worth reading, not because they are precise enough to headline.
Full numbers
| City | 10% | Median | 90% | Permits |
|---|---|---|---|---|
| Marin County, CA | $10,000 | $40,000 | $99,926 | 172 |
| New York, NY | $9,000 | $30,000 | $113,000 | 1,078 |
| Chicago, IL | $7,500 | $28,000 | $100,000 | 991 |
| Raleigh, NC | $8,000 | $28,000 | $73,828 | 658 |
| Austin, TX | $5,900 | $25,000 | $80,000 | 30 |
| Seattle, WA | $6,116 | $20,000 | $89,780 | 266 |
| San Francisco, CA | $4,000 | $18,000 | $60,078 | 1,059 |
| Montgomery County, MD | $4,765 | $15,640 | $62,371 | 2,165 |
| New Orleans, LA | $2,500 | $15,064 | $79,600 | 185 |
| Kansas City, MO | $3,620 | $14,934 | $75,720 | 247 |
| Detroit, MI | $4,250 | $14,641 | $29,365 | 26 |
| Sacramento, CA | $5,540 | $14,534 | $47,265 | 136 |
| Everett, WA | $3,850 | $10,712 | $42,451 | 68 |
| Los Angeles, CA | $2,501 | $10,000 | $80,000 | 2,292 |
| Anaheim, CA | $3,424 | $8,000 | $25,000 | 194 |
| Corona, CA | $3,101 | $5,375 | $30,000 | 95 |
Declared permit values, last 24 months. Updated 2026-09-24. Methodology.