California mitigation credits
A monthly snapshot of California's mitigation banking market — wetland, stream, species credits — built on federal RIBITS bank, ledger, and service-area data.
California mitigation credits loosen across all tracked types
California supply loosened across wetland, stream, and species credits over the trailing twelve months. Available inventory expanded in each category, with species credits forming the dominant share of listed supply.
Stream credits released at a pace close to their standing availability, indicating active turnover. Wetland and species inventories remain deep relative to releases. Withdrawals stayed low across all three types.
- Species credits concentrate the largest portion of available supply.
- Stream releases ran near available inventory, signaling faster rotation.
- Withdrawals remained minor across wetland, stream, and species credits.
Generated from 1 data sources and reviewed before publication. Figures reflect the September 2026 lookback and are illustrative in this preview.
The market by credit type
Each credit type trades on its own supply-and-demand curve — figures are never summed across types. Availability is the current statewide balance; TTM = trailing twelve months.
| Credit type | Available | Released · TTM | Withdrawn · TTM | Trend |
|---|---|---|---|---|
| Wetland | 1,089 | 254 | 12 | Loosening |
| Stream | 1,209 | 1,132 | 64 | Loosening |
| Species | 32,898 | 2,760 | 645 | Loosening |
Activity over time
Quarterly releases and withdrawals, and the running available balance, for each credit type — the state-level view of what MitigationDesk shows on each bank profile. Trend runs 2024 Q2 → 2026 Q3.
Wetland
Stream
Species
Largest transactions
The biggest credit releases and sales in September 2026, by credit type.
Largest releases · Wetland
| Bank | Sponsor | Released | Date |
|---|---|---|---|
| ECC ILF project - Hess Creek | 0 | Sep 1 |
Largest sales · Wetland
| Bank | Buyer / permittee | Sold | Date |
|---|---|---|---|
| Johnson Cosumnes Mitigation Bank | Toll West Coast LLC | 3 | Sep 14 |
| Johnson Cosumnes Mitigation Bank | County of El Dorado | 1 | Sep 23 |
| Johnson Cosumnes Mitigation Bank | D.R. Horton | 0 | Sep 4 |
| ECC ILF project - Hess Creek | Discovery Builders, Inc. | 0 | Sep 14 |
| Johnson Cosumnes Mitigation Bank | Sacramento County Department of Transportation | 0 | Sep 18 |
Largest releases · Stream
| Bank | Sponsor | Released | Date |
|---|---|---|---|
| ECC ILF project - Hess Creek | 930 | Sep 1 | |
| ECCC ILF Project Upper Hess Watershed | 0 | Sep 1 |
Largest sales · Stream
| Bank | Buyer / permittee | Sold | Date |
|---|---|---|---|
| Johnson Cosumnes Mitigation Bank | D.R. Horton | 2 | Sep 4 |
| Johnson Cosumnes Mitigation Bank | The True Life Companies, LLC | 1 | Sep 8 |
| Johnson Cosumnes Mitigation Bank | City of Rocklin | 0 | Sep 25 |
| Johnson Cosumnes Mitigation Bank | The True Life Companies, LLC | 0 | Sep 8 |
Largest releases · Species
| Bank | Sponsor | Released | Date |
|---|---|---|---|
| Buck Ridge Conservation Bank | 199 | Sep 28 | |
| Buck Ridge Conservation Bank | 166 | Sep 28 | |
| Buck Ridge Conservation Bank | 107 | Sep 28 | |
| Buck Ridge Conservation Bank | 99 | Sep 28 | |
| Buck Ridge Conservation Bank | 99 | Sep 28 | |
| Buck Ridge Conservation Bank | 99 | Sep 28 |
Largest sales · Species
| Bank | Buyer / permittee | Sold | Date |
|---|---|---|---|
| Zacharias Ranch Mitigation Bank | Richland Planned Communities, Inc | 0 | Sep 21 |
| Zayante Sand Hills Conservation Bank | Erron Alvey | 0 | Sep 4 |
Aggregated from publicly disclosed RIBITS/DEQ ledger transactions for the period. Buyers are named where the transaction is a matter of public record.
How to buy mitigation credits in California
If your project impacts a regulated resource in California, you'll typically need to offset that impact by purchasing compensatory mitigation credits. Which bank you can buy from is determined by service area — a bank is generally approved to sell only to impacts inside its watershed (HUC), so geography comes first.
For federal Clean Water Act §404 impacts, wetland and stream credits are tracked in the U.S. Army Corps of Engineers' RIBITS system.
The practical steps: (1) confirm your impact type and quantity, (2) identify the HUC your impact falls in, (3) find banks whose service area covers that HUC with the right credit type available, and (4) contact the bank sponsor for a price and reservation. MitigationDesk collapses steps 2–4 into a single search.
See the banks that can service your project — with live availability, status, and the sales contact.
Find CA credits → How credit trading works →California mitigation credits — FAQ
How many mitigation banks serve California?
As of the latest snapshot, roughly 231 mitigation banks have service areas covering part of California, spanning every status including ILF programs and inactive banks. Of those, 149 are approved and active.
What types of mitigation credits are available in California?
California banks offer wetland, stream, and species credits. Each credit type trades on its own supply-and-demand curve and is never interchangeable with another — a stream credit can't offset a wetland impact.
Does California have species mitigation credits?
Yes. California has mitigation banks offering species credits. Availability is driven by service area, so which specific banks can serve a given project depends on the project's watershed (HUC).
Who regulates mitigation credits in California?
Mitigation credits in California (wetland, stream, and species) are tracked by the U.S. Army Corps of Engineers through RIBITS (the Regulatory In-lieu fee and Bank Information Tracking System), which records every bank's ledger and service area.
How much do mitigation credits cost in California?
Mitigation credit prices are not public and vary by credit type, local availability, and service area — a scarce credit type in a thinly-supplied watershed commands more than an abundant one. Prices come from the bank sponsor directly. MitigationDesk surfaces the sponsor and sales contact for every California bank so you can request a quote.
See live availability for your project.
These pages summarize the market. The app shows you the specific banks that can service your site — with real-time balances, status, and the sales contact.