Plano-based Green Brick Partners is lining up a massive new neighborhood just southeast of Buda, with plans that could bring about 1,000 single-family homes to what is now largely open land. The roughly 217-acre project would also include a future school site for Hays Consolidated ISD, parks and multiple entrances, and it is set to roll out in stages over several years. Hays County leaders have already signed off on a development agreement, moving the proposal into the nitty-gritty of permitting, utility planning and platting.
Project scope and neighborhood features
According to the Hays County Commissioners Court minutes, the Ellington Subdivision, filed under GBRK Edgewood LLC, covers about 216.94 acres and is planned for between 1,000 and 1,100 single-family units. The same county record says Green Brick would donate an 11-acre school site to Hays CISD, reserve roughly 15 acres for parks and trails, and build the neighborhood in five phases over about a decade. The developer would also chip in on nearby road improvements as the project comes online.
The plan surfaced in the Austin Business Journal’s July 7, 2026 coverage of expanding suburban neighborhoods, which noted that Green Brick is already pursuing dirt work and entitlements for the site southwest of Austin. The outlet framed the Ellington project as part of the continuing surge of master-planned communities spilling beyond Austin’s city limits.
Roads, sewer, and utility buildout
A Guadalupe-Blanco River Authority board packet states that the tract sits at the intersection of Williamson and Satterwhite roads and will need retail wastewater service for roughly 1,100 homes. The GBRA materials say a Green Brick affiliate would plan, fund, and build a new wastewater treatment plant plus the necessary collection and disposal systems, then transfer those facilities to GBRA to operate once the developer secures the required TCEQ permits. County staff has flagged those utility extensions and right-of-way needs as key off-site impacts tied to the project.
Who Green Brick is and why it is pushing south
Green Brick is a publicly traded homebuilder and land developer headquartered in Plano, and its most recent Form 10-K lists Austin as one of its core markets. That filing shows the company owned or controlled tens of thousands of home sites heading into 2026. It operates a mix of in-house builder brands alongside land-development platforms, a structure that helps explain why it is taking on a large project with its own infrastructure and utility commitments baked in.
What comes next for the Ellington Subdivision
Hays County’s approval of a development agreement, detailed in the court minutes, clears the way for utility agreements, final plats and building-related permits, but dozens of discretionary approvals and technical sign-offs still stand between the raw land and move-in day. County documents and developer presentations indicate the buildout will be phased, with road construction, utility installation, and delivery of the donated school site serving as major milestones that will dictate how fast this new neighborhood fills in.
