Detailed look at how we approach complex multifamily developments from feasibility through construction across the Southeast.
The Views at Athens is a 387-unit apartment community located in Athens, Georgia, one of the state's most active college-adjacent rental markets. Hagen Engineering provided full site and civil engineering design for this large-scale development, managing every discipline from initial site analysis through permit-ready construction documents. The project scope included site grading, stormwater management, water distribution, sanitary sewer design, erosion and sediment control, and complete permitting coordination with Georgia reviewing agencies.
The site presented meaningful topographic challenges that required careful engineering. Significant grade changes across the property demanded a grading strategy that balanced earthwork costs against building pad placement and stormwater conveyance. Our team designed a drainage system that worked with the natural terrain rather than against it, routing stormwater through a series of managed conveyances and detention facilities that met Georgia Environmental Protection Division requirements while minimizing pipe infrastructure and associated construction costs.
Coordinating with Georgia-specific environmental and permitting requirements from our North Carolina office demonstrated a core Hagen capability: multi-state project delivery without sacrificing local knowledge or responsiveness. Our engineers maintained direct communication with Athens-Clarke County reviewing staff throughout the permitting process, addressing review comments efficiently and keeping the project on the developer's timeline.
The final design maximized unit yield on the available acreage while preserving key natural site features, including mature tree stands and existing drainage corridors that contributed to the community's market appeal. The project illustrates how thoughtful civil engineering can support both development economics and site character simultaneously.
Ardmore at Flowers stands as one of the largest single-phase multifamily projects in the Hagen Engineering portfolio. At 396 units, this North Carolina-based apartment community required infrastructure scaled to serve a small neighborhood — water distribution sized for peak domestic and fire flow demands, a gravity sanitary sewer collection system serving dozens of building connections, and a stormwater management system engineered for the impervious coverage generated by nearly 400 residential units and their associated parking, drives, and amenity areas.
Our team's deep familiarity with North Carolina regulatory processes proved essential on a project of this scale. We coordinated simultaneously with multiple reviewing agencies, managing stormwater permit applications through NCDEQ, erosion control approvals through the local delegated program, and utility plan reviews through the serving water and sewer authority. Understanding the specific documentation requirements and review timelines of each agency allowed us to prepare submissions that moved through review efficiently, avoiding the iterative resubmission cycles that commonly delay large projects.
Site grading for a 396-unit community demands precision. The earthwork design balanced cut and fill quantities across the site to minimize off-site material import or export, directly reducing one of the largest variable cost items in land development construction. Our engineers developed a grading plan that established building pads, parking areas, and stormwater facilities while maintaining constructable slopes and positive drainage throughout the developed site. Value engineering during the design phase identified opportunities to adjust building pad elevations and road profiles that reduced total earthwork volume without compromising site functionality.
The completed design package provided the developer with permit-ready construction documents that enabled competitive bidding and a clear construction sequence. Ardmore at Flowers demonstrates Hagen Engineering's capacity to manage the engineering complexity inherent in large-unit-count projects while maintaining the attention to cost optimization that developers require.
The Retreat at Huntsville is a 360-unit apartment community located in Huntsville, Alabama, one of the fastest-growing metropolitan areas in the Southeast. Huntsville's rapid expansion, driven by aerospace, defense, and technology employment, has created sustained demand for quality multifamily housing. Hagen Engineering provided comprehensive site and civil engineering services for this project, marking a successful expansion of our project delivery into the Alabama market.
Navigating Alabama-specific permitting requirements presented an opportunity to demonstrate Hagen's adaptable approach to multi-state work. While the fundamental engineering principles remain consistent across state lines, each state maintains distinct stormwater regulations, erosion control standards, and utility design criteria. Our team researched and applied Alabama Department of Environmental Management requirements, local municipal design standards, and Huntsville-specific review processes to produce documents that met all applicable regulations on first submission. We maintained the same quality standards and design rigor applied to our home-state North Carolina projects.
The developer's acquisition timeline required an accelerated design schedule. Our team structured the project workflow to deliver critical design elements — preliminary grading, utility routing, and stormwater feasibility — early in the process to support the developer's due diligence and financing requirements. This front-loaded approach allowed the client to secure the property with confidence that the site could accommodate the planned unit count and that no fatal engineering constraints existed.
The Retreat at Huntsville illustrates Hagen Engineering's ability to serve clients seamlessly across state lines. By combining our established design processes with thorough research into local regulatory requirements, we delivered a complete engineering package that met Alabama standards while maintaining the quality and cost-consciousness our clients expect regardless of project location.
Ardmore at Prosperity Crossing is a 360-unit apartment community located in Knox County within the greater Knoxville, Tennessee metropolitan area. This project represents both a geographic expansion into the Tennessee market and a continuation of a valued repeat-client relationship — the Ardmore brand appears multiple times in the Hagen Engineering portfolio, reflecting the trust that this developer places in our engineering and project delivery capabilities.
Tennessee's permitting landscape brings its own set of requirements. Our team coordinated with the Tennessee Department of Environment and Conservation on stormwater and erosion control compliance, while simultaneously managing utility plan reviews with the local water authority serving the Knox County area. Understanding each agency's preferred submission format, review timeline, and technical standards allowed us to prepare applications that moved through review without unnecessary delays. Utility coordination proved particularly important on this project, as water and sewer capacity allocation for 360 units required early engagement with the serving authority to confirm availability and connection points.
The site design balanced density requirements with the community character expected in the Knoxville market. Our grading approach established efficient building pad layouts and parking configurations while incorporating landscaped common areas and stormwater features that contribute to the property's marketability. The stormwater management system was designed to meet Tennessee water quality and quantity control requirements using a combination of detention and best management practices appropriate to the site's soil and drainage characteristics.
Ardmore at Prosperity Crossing exemplifies the consistency that repeat clients value in an engineering partner. Regardless of whether a project is located in North Carolina, Tennessee, or any of the other states where we hold professional engineering licensure, clients receive the same design quality, communication standards, and commitment to schedule that define the Hagen Engineering approach. This project underscores our geographic reach and our ability to replicate successful outcomes across state lines for developers managing multi-state portfolios.
These four case studies represent a fraction of our multifamily portfolio. From 200-unit communities to 400-unit developments, Hagen Engineering has the track record to support your next project with confidence.
View All Projects ›Our team has the experience and multi-state licensing to handle your next multifamily development. Let's discuss your project.