# Planned developments in Sonoma County, CA

Boardwalk found 530+ planned projects in Sonoma County, CA in public filings from the last 12 months, mostly residential and infrastructure. The latest is on the City of Rohnert Park Planning Commission agenda for Oct 8, 2026.

Data as of Oct 11, 2026. Updated monthly. Page: https://boardwalkai.com/development/california/sonoma/

## Sonoma County at a glance

| Measure | Value |
|---|---|
| Projects, last 12 months | 530+ |
| New in the last 30 days | 34 |
| Most common type | Residential |
| Latest filing | Oct 8, 2026, City of Rohnert Park Planning Commission |
| Sources we check | 12 |

Last 12 months, duplicates merged. Includes private, public, and small jobs. How we count: https://boardwalkai.com/coverage/#how-we-count

## Looking for the City of Sonoma?

[Sonoma, CA](https://boardwalkai.com/development/california/sonoma-city/) · 38 projects

## What's planned in Sonoma County

By type, last 12 months.

| Type | Projects | Share |
|---|---|---|
| Residential | 170+ | 33% |
| Infrastructure | 130+ | 25% |
| Development decisions | 100+ | 19% |
| Public and institutional | 59 | 11% |
| Commercial | 49 | 9% |
| Mixed use | 9 | 2% |
| Industrial | 7 | 1% |
| Agricultural | 1 | Under 1% |

## Recent projects in Sonoma County

| Project | Location | Developer | Type | Size | Stage | Latest meeting |
|---|---|---|---|---|---|---|
| Santa Rosa City Hall Development Agreement | Santa Rosa, CA | Museum on the Square, LLC | Government offices | Not stated in filing | Recommended | Oct 8, 2026 |
| Esmeralda Development Project Specific Plan and Zoning | Cloverdale, CA | Esmeralda Land Company, LP | Hotels and lodging | Not stated in filing | Seeking approval | Oct 7, 2026 |
| $10M Community Resilience Center at Petaluma Fairgrounds | Petaluma, CA | Rebuilding Together Petaluma | Schools | Not stated in filing | Early planning | Sep 28, 2026 |
| $875K Transit Yard and Maintenance Bay Renovation | Petaluma, CA | Petaluma Transit | Transportation | Not stated in filing | Early planning | Sep 28, 2026 |
| 39-Unit Residential Development on 2.69 Acres | Sebastopol, CA | Grupe Investment Company, Inc. | Single-family | 39 homes · 2.69 acres | Seeking approval | Sep 22, 2026 |
| South Santa Rosa Avenue Area Bus Stop Improvements | Santa Rosa, CA | Not stated | Transportation | Not stated in filing | Early planning | Sep 17, 2026 |
| 384-Unit Apartment Community on 12 Acres | Windsor, CA | Gallaher Community Housing | Apartments | 384 apartments · 12 acres | Seeking approval | Sep 15, 2026 |
| 500 Hopper Street Land Use Designation Modification | Petaluma, CA | Petaluma River Park Foundation | Mixed Use | Not stated in filing | Seeking approval | Sep 10, 2026 |
| 82-Unit Continuing Care Retirement Community | Santa Rosa, CA | Gallaher Senior Living | Senior living | 82 units | Seeking approval | Sep 10, 2026 |
| $75K Pleasant Hill Water Loop Design Funding Reallocation | Sebastopol, CA | Not stated | Utilities | Not stated in filing | Recommended | Sep 9, 2026 |
| $32M 90,500-sq-ft Civic Campus on 7.3 Acres | Sebastopol, CA | Not stated | Government buildings | 7.3 acres | Recommended | Sep 9, 2026 |
| 147-Unit Residential Development on 3.75 Acres | Petaluma, CA | Pacifica Haystack LP | Residential | 147 units · 3.75 acres | Seeking approval | Sep 9, 2026 |

Showing 12 of 530+ projects. A free trial opens the full records and documents.

Samples show projects filed by companies or public bodies.

## Cities in Sonoma County

- [Santa Rosa, CA](https://boardwalkai.com/development/california/santa-rosa/) · 120+ projects
- [Sebastopol, CA](https://boardwalkai.com/development/california/sebastopol/) · 100+ projects
- [Petaluma, CA](https://boardwalkai.com/development/california/petaluma/) · 83 projects
- [Windsor, CA](https://boardwalkai.com/development/california/windsor/) · 42 projects
- [Sonoma, CA](https://boardwalkai.com/development/california/sonoma-city/) · 38 projects
- [Rohnert Park, CA](https://boardwalkai.com/development/california/rohnert-park/) · 26 projects
- [Cotati, CA](https://boardwalkai.com/development/california/cotati/) · 22 projects
- [Cloverdale, CA](https://boardwalkai.com/development/california/cloverdale/) · 20 projects
- Healdsburg, CA · 16 projects
- Graton, CA · 8 projects

## Nearby places

- [Lake County, CA](https://boardwalkai.com/development/california/lake/) · 140+ projects
- [Marin County, CA](https://boardwalkai.com/development/california/marin/) · 760+ projects
- [Napa County, CA](https://boardwalkai.com/development/california/napa/) · 430+ projects
- [Colusa County, CA](https://boardwalkai.com/development/california/colusa/) · 95 projects
- [Yolo County, CA](https://boardwalkai.com/development/california/yolo/) · 100+ projects
- [Solano County, CA](https://boardwalkai.com/development/california/solano/) · 180+ projects

All places in California: [California](https://boardwalkai.com/development/california/)

## Questions about Sonoma County

### What's planned in Sonoma County, CA?

Boardwalk found 530+ planned projects in Sonoma County, CA in the last 12 months, mostly residential and infrastructure. The latest is on the City of Rohnert Park Planning Commission agenda for Oct 8, 2026.

### Where does this data come from?

Boardwalk's Sonoma County projects come from public meeting records, such as City of Rohnert Park Planning Commission agendas and minutes. Each one links to the original filing.

### How current is it?

Boardwalk checks Sonoma County's public records at least once a week; the last check was Oct 11, 2026. These counts are as of Oct 11, 2026 and refresh monthly.

### Can I get an Alert for new Sonoma County projects?

Yes, a Boardwalk Alert emails you new Sonoma County projects daily, weekly, or monthly. Start with a 7-day free trial, no credit card needed.

## Get the full data

- **Count for free.** Connect Boardwalk to Claude or ChatGPT and ask how many projects match. Counting is free during your trial and on every plan. [Use it in Claude or ChatGPT](https://boardwalkai.com/mcp/)
- **Open the records.** Start a 7-day free trial, no credit card. It includes 50 project records. [Start free trial](https://boardwalkai.com/auth/signup/)
- **Use it in your tools.** CSV export, the API, and the MCP server come with every plan. [API docs](https://boardwalkai.com/docs/api/)
- **Download these numbers.** [sonoma.json](https://boardwalkai.com/data/places/california/sonoma.json) · [sonoma.md](https://boardwalkai.com/development/california/sonoma/index.md)

## How to cite

Source: Boardwalk, "Planned developments in Sonoma County, CA", boardwalkai.com/development/california/sonoma/, data as of Oct 11, 2026.

How we count: https://boardwalkai.com/coverage/#how-we-count