# Planned developments in Lake St. Louis, MO

Boardwalk found 44 planned projects in Lake St. Louis, MO in public filings from the last 12 months. The latest is on the Administrative/Finance Public Works Joint Work Session agenda for Aug 17, 2026.

Data as of Oct 11, 2026. Updated monthly. Page: https://boardwalkai.com/development/missouri/lake-st-louis/

## Lake St. Louis at a glance

| Measure | Value |
|---|---|
| Projects, last 12 months | 44 |
| New in the last 30 days | 0 |
| Most common type | Institutional/Public |
| Latest filing | Aug 17, 2026, Administrative/Finance Public Works Joint Work Session |
| 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

## What's planned in Lake St. Louis

By type, last 12 months.

| Type | Projects | Share |
|---|---|---|
| Public and institutional | 11 | 25% |
| Infrastructure | 11 | 25% |
| Residential | 9 | 20% |
| Development decisions | 6 | 14% |
| Commercial | 6 | 14% |
| Industrial | 1 | 2% |

## Recent projects in Lake St. Louis

| Project | Developer | Type | Size | Stage | Latest meeting |
|---|---|---|---|---|---|
| Lake Saint Louis Blvd. South Phase 1 Roadway Improvements | Not stated | Transportation | Not stated in filing | Out to bid | Aug 17, 2026 |
| Costco Warehouse and Gasoline Station at 4000 Lake Saint Louis Boulevard | Costco Wholesale Corporation | Retail | Not stated in filing | Seeking approval | Aug 3, 2026 |
| Founders Park Improvements including Restroom, Court and Parking | Not stated | Parks | Not stated in filing | Early planning | Jul 20, 2026 |
| $2,260 New Maintenance Facility Engineering | Not stated | Government offices | Not stated in filing | In design | Jul 6, 2026 |
| TreeWalk Project at Deer Ridge Park Grant Acceptance | Not stated | Parks | Not stated in filing | Early planning | Jun 15, 2026 |
| $200K Orf Road Improvements | Not stated | Transportation | Not stated in filing | Early planning | Jun 1, 2026 |
| $250K Lake Saint Louis Boulevard South Phase 3 Road Improvement | Not stated | Roads and highways | Not stated in filing | In design | Jun 1, 2026 |
| Greendale Senior Village | RING PROPERTY COMPANY, LLC | Senior living | 39 units · 3.93 acres | Recommended | May 7, 2026 |
| 9-Unit Residential Development on 3.23 Acres | Rolwes Development, LLC | Single-family | 9 homes · 3.23 acres | Seeking approval | May 4, 2026 |
| Financial Institution at 6401 Ronald Reagan Drive | Together Credit Union | Banks | Not stated in filing | Seeking approval | Apr 6, 2026 |

Showing 10 of 44 projects. A free trial opens the full records and documents.

Samples show projects filed by companies or public bodies.

## Nearby places

- [Dardenne Prairie, MO](https://boardwalkai.com/development/missouri/dardenne-prairie/) · 61 projects
- [Wentzville, MO](https://boardwalkai.com/development/missouri/wentzville/) · 85 projects
- [O'Fallon, MO](https://boardwalkai.com/development/missouri/o-fallon/) · 310+ projects
- New Melle, MO · 6 projects
- [Weldon Spring, MO](https://boardwalkai.com/development/missouri/weldon-spring/) · 50 projects
- [Cottleville, MO](https://boardwalkai.com/development/missouri/cottleville/) · 78 projects

All places in Missouri: [Missouri](https://boardwalkai.com/development/missouri/)

## Questions about Lake St. Louis

### What's planned in Lake St. Louis, MO?

Boardwalk found 44 planned projects in Lake St. Louis, MO in the last 12 months. The latest is on the Administrative/Finance Public Works Joint Work Session agenda for Aug 17, 2026.

### Where does this data come from?

Boardwalk's Lake St. Louis projects come from public meeting records, such as Administrative/Finance Public Works Joint Work Session agendas and minutes. Each one links to the original filing.

### How current is it?

Boardwalk checks Lake St. Louis'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 Lake St. Louis projects?

Yes, a Boardwalk Alert emails you new Lake St. Louis 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.** [lake-st-louis.json](https://boardwalkai.com/data/places/missouri/lake-st-louis.json) · [lake-st-louis.md](https://boardwalkai.com/development/missouri/lake-st-louis/index.md)

## How to cite

Source: Boardwalk, "Planned developments in Lake St. Louis, MO", boardwalkai.com/development/missouri/lake-st-louis/, data as of Oct 11, 2026.

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