Columbus does not impose general residential development impact fees on ADUs. Georgia's Development Impact Fee Act (O.C.G.A. § 36-71-1 et seq.) requires a Capital Improvement Element in the local comprehensive plan before impact fees can be charged, and Columbus has not adopted a citywide impact-fee program. ADU costs are limited to building permit fees, Columbus Water Works tap and capacity fees, and sewer connection charges.
Under Georgia's Development Impact Fee Act, O.C.G.A. § 36-71-1 through § 36-71-13, local governments may charge impact fees only after adopting a Capital Improvements Element (CIE) to the local comprehensive plan that meets DCA requirements. Columbus has historically funded growth-related infrastructure through general fund appropriations, SPLOST (Special Purpose Local Option Sales Tax) and OLOST (Other Local Option Sales Tax) collections, and dedicated millage rather than a residential impact-fee program. Therefore an ADU in Columbus typically incurs: (1) Inspections and Code Enforcement building permit fees based on construction valuation per the Columbus fee schedule; (2) zoning compliance and plan review fees through Planning; (3) Columbus Water Works tap, meter, and capacity charges when a new connection is installed — sharing the principal dwelling's existing service avoids most of these; (4) Columbus Water Works sewer connection and capacity fees; (5) any drainage or stormwater fees triggered by impervious-surface thresholds in the Stormwater Management Ordinance. Properties in FEMA flood zones require an Elevation Certificate at the additional surveyor cost. The Muscogee County Tax Assessor reassesses the property after construction, which raises annual ad valorem taxes. Affordable housing fee waivers are not currently codified for income-restricted units.
Construction without permits to avoid fees: Inspections and Code stop-work orders, double permit fees on after-the-fact applications, and possible exposure-of-work orders to verify concealed construction. Unpaid Columbus Water Works charges block service connection and prevent certificate of occupancy. Floodplain violations under the Columbus Flood Damage Prevention Ordinance can void NFIP flood insurance and harm the city's Community Rating System score, raising premiums citywide.
Columbus, GA
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Columbus, GA
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