4352 - Serenbe Expansion
The purpose of this Letter of Understanding is to document the discussions during the Methodology Meeting held
virtually on April 14th, 2025 regarding Project Serenbe (DRI#: 4352) Development of Regional Impact (DRI). The
GRTA DRI Review Procedures, as well as the inputs and parameters documented in this Letter of Understanding
and the revised Methodology Meeting Packet, shall be adhered to in preparing the GRTA required Transportation
Study.
DRI 4352 - Serenbe Exopansion
The purpose of this Letter of Understanding is to document the discussions during the Methodology Meeting held virtually on April 14th, 2025 regarding Project Serenbe (DRI#: 4352) Development of Regional Impact (DRI). The GRTA DRI Review Procedures, as well as the inputs and parameters documented in this Letter of Understanding and the revised Methodology Meeting Packet, shall be adhered to in preparing the GRTA required Transportation Study.
Two Decades of Waiting, Then a Bombshell Filing
For nearly twenty years, residents and officials in Chattahoochee Hills and Coweta County waited for updated information on Serenbe’s long-term growth plans.
The last major public filing came in 2006, when the Atlanta Regional Commission (ARC) flagged the need for traffic studies, water capacity planning, and open-space preservation for what was then a modest mixed-use development.
Since then, reports were sparse. But in May 2025, a new filing landed—revealing a $1.7 billion expansion set to double the size of the community by 2035.
“We waited nearly 20 years for updated numbers—now the project has doubled in size,” one longtime resident told the Chronicle.
The 2025 Expansion in Numbers
The new filing outlines a massive multi-phase buildout:
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1,100 new homes (total: 1,700 units)
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235,000 sq. ft. of commercial space for shops, restaurants, offices
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180 hotel rooms for tourism and conference stays
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75,000 sq. ft. of civic space, including two school buildings
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Phased construction through 2035
County planners say this expansion alone will generate thousands of daily vehicle trips, triggering the largest traffic impact review in Serenbe’s history.
Traffic Concerns: A Longstanding Problem
Back in 2006, ARC reviewers noted internal traffic circulation problems, limited pedestrian connections, and growing congestion at key intersections like Atlanta-Newnan Road and Hutcheson Ferry Road.
The new filing comes amid broader growth pressures:
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A 340,000 sq. ft. mixed-use development near I-85 filed its own DRI in September 2025.
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The 2.1 million sq. ft. “Project Peach” data center near Palmetto was filed in February 2025, raising additional road capacity concerns.
Coweta County’s 2022 traffic-study ordinance now requires detailed impact reports for most rezoning, citing “unbearable” congestion on GA-16 and the urgent need for four-lane expansions.
What Happens Next
The Atlanta Regional Commission (ARC), Georgia Regional Transportation Authority (GRTA), and Georgia Department of Community Affairs (DCA) will now review the 2025 filings.
Coweta County officials say no final approvals will be issued until traffic mitigation plans and infrastructure upgrades are incorporated into development agreements.
“The community deserves real answers before bulldozers roll in,” a Coweta transportation planner said this week.
A Turning Point for Serenbe
What began as a small, mixed-use village has now grown into one of the largest developments in the region. With the population set to double and construction extending to 2035, the coming months will test whether infrastructure, planning, and transparency can finally catch up to Serenbe’s ambitions.
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BREAKING NEWS - The Study Posted
DEVELOPMENT OF REGIONAL IMPACT (DRI)
TRAFFIC IMPACT STUDY
PROJECT DESCRIPTION
Introduction
This traffic impact study has been conducted by Southeastern Engineering, Inc. (SEI) for Project Serenbe DRI, a mixed-use development in the City of Chattahoochee Hills, Fulton County, Georgia. The site is approximately 1,532 acres of partially developed land roughly bounded by SR 70/S Fulton Parkway, Hutcheson Ferry Road, Cochran Mill Road, and Atlanta Newnan Road/Shell Road in Fulton County and
Coweta County. The project site is currently zoned for Mixed Use Hamlet (HM-MU) land use and theproposed zoning will be Mixed Use Hamlet (HM-MU) land use. The project exceeds the threshold of 400,000 SF of mixed-used development therefore, it qualifies to be analyzed as a Development of Regional Impact (DRI) by Georgia Regional Transportation Authority (GRTA) and Atlanta Regional Commission (ARC).
The development will be analyzed in four phases.
• Phase 1 will be completed by 2027.
• Phase 2 will be completed by 2029.
• Phase 3 will be completed by 2032.
• Phase 4 will be completed by 2035.
Development phases 1 through 4 will include approximately 1,097 residential units that will include single-family and multi-family residences as well as senior adult housing. The development will also include 203,000 SF of mixed-use developments.
Live Updates
Latest News: 1 dead, 1 hospitalized after fiery, head-on crash in Chattahoochee Hills, story linked below.
By WSBTV.com News Staff
September 26, 2025 at 8:29 pm EDT
Grand jury exonerates former deputy
A former Clayton and Fulton County deputy is exonerated after a Fulton County grand jury failed to indict him on a charge of lying to police. Last year, we first told you about a Chattahoochee Hills Police traffic stop involving Quinton Coleman. Coleman and his attorney insisted the charges were bogus all along.
https://www.fox5atlanta.com/video/1714801
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THE HiLL COUNTRY
Serenbe Expansion Doubles Community Size as Delayed Reports Finally Surface
By Staff Writer - The Hill Country
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