Carolina Redesign · Research Series

Urban
Productivity

Not all land pays its own way. Using the Strong Towns / Urban3 per-acre framework applied to real SC parcel data, we measure whether the way our cities are built can actually afford itself — and who is being asked to make up the difference.

The Framework

Per-acre tax productivity

Annual property tax revenue divided by total city polygon acres. Measures whether the built environment is generating enough revenue to sustain itself.

Assessment equity

Effective assessment ratio = county assessed value ÷ arm's-length sale price. Reveals whether the tax burden falls proportionally across price tiers and geographies.

Ownership structure

Corporate, absentee, institutional, and civic classifications on every parcel. Tracks whether residential real estate is shifting from homes to assets.

Data sources

SCDOT statewide parcel service (all 46 SC counties), Census TIGER boundaries, ACS demographics, and arm's-length sales records from county GIS.


The studies

Each city analysis produces a written report, an interactive dashboard, and — where data permits — assessment equity and investor ownership breakdowns. All analyses use the same pipeline and methodology, making cities directly comparable on a per-acre basis.

C

Charleston, South Carolina

Charleston County · Walled City & Tri-County Metro

$334K per acre · Walled City
$6K per acre · Suburban corridor
62 Walled City acres
55× productivity spread
Written Report The Walled City Still Pays Why Charleston's 18th-century street pattern — built before cars, before parking minimums, before single-use zoning — still outproduces everything the metro built since by a factor of 55. Read the analysis → Interactive Dashboard Walled City vs. the Strip Side-by-side parcel-level comparison of the Walled City, CENA (central neck area), and the Savannah Highway suburban corridor. Toggle by tax productivity, appraised value, and use. Open dashboard → Metro Analysis Charleston, by the Acre A wider lens: the full tri-county metro. From the original walled city at $334,000/acre to the suburban subdivisions at $6,000. Same metro, same state, same tax code — different patterns, wildly different fiscal results. Read the metro report → Neighborhood Vignette Elliotborough Pays Its Way A focused companion piece. The eastern half of Cannonborough-Elliotborough — 130 acres bounded by Meeting, Rutledge, Septima Clark, and Bee — generates an estimated $19.5 million per year in property tax. That's $149K per acre, more than 100× the suburban corridor, on a footprint treated like a red-headed stepchild relative to neighborhoods south of Calhoun. Read the vignette → Concept Study Vincity: A Mini Study A measurement, a metaphor, and a math. Why intersection density per acre — Vince Graham's vincity — tracks fiscal productivity so tightly. Includes a grocery-store thought experiment (the East Aurora Co-op vs. a hypothetical store designed by a traffic engineer) and benchmark values for all of our case studies, from Savannah Highway to Oglethorpe's Savannah, GA. Read the mini study →


More cities in progress. The pipeline supports any SC county via the SCDOT statewide parcel service. Greenville, Spartanburg, Rock Hill, and Myrtle Beach are candidates for the next analysis cycle.

Contact Carolina Redesign →