# Planned developments in Mason County, WA

Boardwalk found 97 planned projects in Mason County, WA in public filings from the last 12 months, mostly infrastructure and residential. The latest is on the Board of Mason County Commissioners agenda for Sep 29, 2026.

Data as of Oct 19, 2026. Updated monthly. Page: https://boardwalkai.com/development/washington/mason/

## Mason County at a glance

| Measure | Value |
|---|---|
| Projects, last 12 months | 97 |
| New in the last 30 days | 1 |
| Most common type | Infrastructure |
| Latest filing | Sep 29, 2026, Board of Mason County Commissioners |
| Sources we check | 5 |

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

## What's planned in Mason County

By type, last 12 months.

| Type | Projects | Share |
|---|---|---|
| Infrastructure | 65 | 67% |
| Residential | 20 | 21% |
| Development decisions | 6 | 6% |
| Commercial | 4 | 4% |
| Industrial | 1 | 1% |
| Public and institutional | 1 | 1% |

## Recent projects in Mason County

| Project | Location | Developer | Type | Size | Stage | Latest meeting |
|---|---|---|---|---|---|---|
| Jossie Rd Culvert and Paving Project | Union, WA | Not stated | Roads and highways | Not stated in filing | Out to bid | Aug 31, 2026 |
| Mt. View Pressure Zone Reservoir Design Grant Acceptance | Shelton, WA | Not stated | Water tanks and reservoirs | Not stated in filing | In design | Aug 4, 2026 |
| $4.2M Olympic Highway North Roadway and Pedestrian Upgrade | Shelton, WA | Not stated | Roads and highways | Not stated in filing | In design | Jul 28, 2026 |
| Rail Crossing Removal Project at 1st, 7th, and Hulbert Road | Shelton, WA | SPSI | Railroads | Not stated in filing | In design | Jul 28, 2026 |
| 1.5-Million-Gallon Mountainview Reservoir | Shelton, WA | Not stated | Water tanks and reservoirs | Not stated in filing | In design | Jul 28, 2026 |
| Cross Town Trail Pedestrian Network and Bridge Restoration | Shelton, WA | Not stated | Trails and greenways | Not stated in filing | In design | Jul 28, 2026 |
| $1.8M Angleside Pressure Zone Water Infrastructure Project | Shelton, WA | Not stated | Utilities | Not stated in filing | Out to bid | Jul 28, 2026 |
| $3.2M Satellite Plant Headworks Upgrade | Shelton, WA | Not stated | Sewer and wastewater | Not stated in filing | In design | Jul 28, 2026 |
| Wallace and Springs Roundabout Intersection Improvement | Shelton, WA | Not stated | Transportation | Not stated in filing | In design | Jul 28, 2026 |
| 1,200-Foot Water Main and Booster Pump Upgrades | Shelton, WA | Not stated | Pipelines | Not stated in filing | Recommended | Jul 21, 2026 |
| $750K Eells Hill Road Gravel-to-Chip Seal Conversion | Shelton, WA | Not stated | Roads and highways | Not stated in filing | Early planning | Jun 28, 2026 |
| $1.1M Matlock Brady Road Safety Enhancement Project | Shelton, WA | Not stated | Roads and highways | Not stated in filing | Early planning | Jun 28, 2026 |

Showing 12 of 97 projects. A free trial opens the full records and documents.

Samples show projects filed by companies or public bodies.

## Cities in Mason County

- [Shelton, WA](https://boardwalkai.com/development/washington/shelton/) · 73 projects
- Union, WA · 6 projects

## Nearby places

- [Jefferson County, WA](https://boardwalkai.com/development/washington/jefferson/) · 51 projects
- [Kitsap County, WA](https://boardwalkai.com/development/washington/kitsap/) · 560+ projects
- [Grays Harbor County, WA](https://boardwalkai.com/development/washington/grays-harbor/) · 280+ projects
- [Thurston County, WA](https://boardwalkai.com/development/washington/thurston/) · 510+ projects
- [Clallam County, WA](https://boardwalkai.com/development/washington/clallam/) · 270+ projects
- [Pierce County, WA](https://boardwalkai.com/development/washington/pierce/) · 780+ projects

All places in Washington: [Washington](https://boardwalkai.com/development/washington/)

## Questions about Mason County

### What's planned in Mason County, WA?

Boardwalk found 97 planned projects in Mason County, WA in the last 12 months, mostly infrastructure and residential. The latest is on the Board of Mason County Commissioners agenda for Sep 29, 2026.

### Where does this data come from?

Boardwalk's Mason County projects come from public meeting records, such as Board of Mason County Commissioners agendas and minutes. Each one links to the original filing.

### How current is it?

Boardwalk checks Mason County's public records at least once a week; the last check was Oct 19, 2026. These counts are as of Oct 19, 2026 and refresh monthly.

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

Yes, a Boardwalk Alert emails you new Mason 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.** [mason.json](https://boardwalkai.com/data/places/washington/mason.json) · [mason.md](https://boardwalkai.com/development/washington/mason/index.md)

## How to cite

Source: Boardwalk, "Planned developments in Mason County, WA", boardwalkai.com/development/washington/mason/, data as of Oct 19, 2026.

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