Jurisdiction file · California
What Marin County pays, by the filings
3,752 permits across 12 kinds of work, filed over the last two years. Every figure is what somebody actually declared to Marin County — no estimates.
| Project | Median | Typical range | Permits |
|---|---|---|---|
| Roof Replacement | $21,132 | $15,000 – $31,466 | 836 |
| Solar Panels | $32,222 | $20,119 – $48,190 | 767 |
| HVAC Replacement | $13,000 | $8,200 – $21,000 | 661 |
| Water Heater | $3,850 | $2,500 – $5,003 | 278 |
| Kitchen Remodel | $65,000 | $33,653 – $125,000 | 259 |
| Electrical Panel Upgrade | $5,000 | $3,000 – $7,500 | 254 |
| Deck or Patio | $40,000 | $21,727 – $60,000 | 172 |
| Bathroom Remodel | $25,000 | $15,000 – $50,000 | 145 |
| Garage | $23,870 | $10,000 – $89,000 | 110 |
| Swimming Pool | $58,000 | $30,000 – $120,000 | 93 |
| Home Addition | $188,000 | $51,250 – $397,500 | 91 |
| Siding or Stucco | $29,185 | $14,625 – $60,350 | 86 |
What the file shows
Roof Replacement is the work Marin County files most: 836 of these 3,752 permits, 22% of the file. The dearest median here is Home Addition at $188,000; the cheapest is Water Heater at $3,850.
The figure to read is not the median but the range next to it. Garage is the least predictable work in this jurisdiction: half of those jobs land between $10,000 and $89,000, a 8.9× spread inside one city and one kind of work. A median says where the middle sits. It does not say which half a particular job is in, and on work that varies this much the difference is the whole decision.
Source: County of Marin — Building Permits. Updated 2026-09-24. Methodology.