Expert insights on land development, zoning regulations, and AI-powered real estate intelligence.

Prefab, modular, and manufactured aren't interchangeable words. They're three regulatory categories with three different building codes, financing paths, and zoning treatments — and Congress just rewrote the rules for one of them.

East Point's R-3 district requires nearly double the floor area of R-1A on a comparably sized lot.

East Point's R-1A district allows a smaller ground floor than R-1 next door — mixing the two up fails plan review.

In East Point's R-1 district, the minimum floor area depends on how it's split between the ground floor and upper floors, not just the total.

Austell's RR district cuts the lot minimum in half versus R-80 but adds a floor-area requirement R-80 doesn't have the same way.

Austell's R-80 district requires 1.84 acres minimum for a single-family lot — nearly triple what nearby districts require.

Austell's R-80 corner-lot setback isn't uniform — 25 or 35 feet depending on which side faces the major road.

Marietta's R-1 district requires a 25-foot side setback, more than triple many nearby areas — a number that can decide what fits on an infill lot.

Marietta's R-1 caps density at 1 unit/acre and requires 1,800 sqft minimum floor area — a lot that looks splittable often isn't once both numbers apply.