# Planned developments in San Mateo, CA

Boardwalk found 44 planned projects in San Mateo, CA in public filings from the last 12 months, mostly infrastructure and residential. The latest is on the City of San Mateo City Council agenda for Oct 5, 2026.

Data as of Oct 11, 2026. Updated monthly. Page: https://boardwalkai.com/development/california/san-mateo-city/

## San Mateo at a glance

| Measure | Value |
|---|---|
| Projects, last 12 months | 44 |
| New in the last 30 days | 4 |
| Most common type | Infrastructure |
| Latest filing | Oct 5, 2026, City of San Mateo City Council |
| Sources we check | 4 |

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

## Looking for San Mateo County?

[San Mateo County, CA](https://boardwalkai.com/development/california/san-mateo/) · 870+ projects

## What's planned in San Mateo

By type, last 12 months.

| Type | Projects | Share |
|---|---|---|
| Infrastructure | 16 | 36% |
| Residential | 14 | 32% |
| Public and institutional | 5 | 11% |
| Development decisions | 4 | 9% |
| Commercial | 3 | 7% |
| Mixed use | 2 | 5% |

## Recent projects in San Mateo

| Project | Developer | Type | Size | Stage | Latest meeting |
|---|---|---|---|---|---|
| $1.12M East Bellevue Avenue Railroad Crossing Closure Project | Not stated | Roads and highways | Not stated in filing | Early planning | Sep 22, 2026 |
| $244K Wastewater Treatment Plant Motor Control Centers Upgrade | Not stated | Sewer and wastewater | Not stated in filing | In design | Aug 17, 2026 |
| 181-Unit Multifamily Residential Development | Promethesus Real Estate | Multifamily | 181 units | Denied | Jul 20, 2026 |
| Basin D Sanitary Sewer Rehabilitation Project Bid Rejection | Not stated | Sewer and wastewater | Not stated in filing | Out to bid | Jul 20, 2026 |
| $3.375M 19th Avenue and Fashion Island Boulevard Multimodal Improvements Project | Not stated | Roads and highways | Not stated in filing | Early planning | Jul 20, 2026 |
| $753K Citywide Street Rehabilitation Package 7B Design Services | Not stated | Roads and highways | Not stated in filing | Approved | Jun 1, 2026 |
| San Mateo Public Library Interior Renovation | Not stated | Libraries | Not stated in filing | In design | Apr 27, 2026 |
| Horizon Services Facility Presentation | Horizon Treatment Services | Hospitals and clinics | Not stated in filing | Early planning | Apr 15, 2026 |
| $964K Wastewater Treatment Plant Tank Replacement | Not stated | Sewer and wastewater | Not stated in filing | In design | Apr 6, 2026 |
| Marina Lagoon Spot Dredging Project | Dixon Marine Services, Inc. | Stormwater and drainage | Not stated in filing | Out to bid | Mar 16, 2026 |
| 34-Unit Mixed-Use Development on 0.26 Acres | 230 El Camino, LLC | Condos | 34 condos · 0.26 acres | Seeking approval | Mar 10, 2026 |

Showing 11 of 44 projects. A free trial opens the full records and documents.

Samples show projects filed by companies or public bodies.

## Nearby places

- [Burlingame, CA](https://boardwalkai.com/development/california/burlingame/) · 67 projects
- Foster City, CA · 20 projects
- Hillsborough, CA · 44 projects
- [Belmont, CA](https://boardwalkai.com/development/california/belmont/) · 35 projects
- [Millbrae, CA](https://boardwalkai.com/development/california/millbrae/) · 29 projects
- [San Carlos, CA](https://boardwalkai.com/development/california/san-carlos/) · 58 projects

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

## Questions about San Mateo

### What's planned in San Mateo, CA?

Boardwalk found 44 planned projects in San Mateo, CA in the last 12 months, mostly infrastructure and residential. The latest is on the City of San Mateo City Council agenda for Oct 5, 2026.

### Where does this data come from?

Boardwalk's San Mateo projects come from public meeting records, such as City of San Mateo City Council agendas and minutes. Each one links to the original filing.

### How current is it?

Boardwalk checks San Mateo's public records at least once a week; the last check was Oct 12, 2026. These counts are as of Oct 11, 2026 and refresh monthly.

### Can I get an Alert for new San Mateo projects?

Yes, a Boardwalk Alert emails you new San Mateo 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.** [san-mateo-city.json](https://boardwalkai.com/data/places/california/san-mateo-city.json) · [san-mateo-city.md](https://boardwalkai.com/development/california/san-mateo-city/index.md)

## How to cite

Source: Boardwalk, "Planned developments in San Mateo, CA", boardwalkai.com/development/california/san-mateo-city/, data as of Oct 11, 2026.

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