Commercial & Business Property
South Carolina Commercial Property Tax Appeals
Office, retail, industrial, multifamily, and special-purpose buildings in South Carolina are frequently over-assessed. Here's how commercial assessments work, the deadline to challenge yours, and what it takes to win.
How commercial is assessed
South Carolina assesses commercial real property at 6% of market value (vs 4% for an owner-occupied legal residence). The 15% reassessment cap does not shelter a property after an assessable transfer (ATI).
Commercial assessed at 6% (vs 4% owner-occupied residence).
Burden of proof
The property owner (or their authorized agent) bears the burden of proving the assessment exceeds market value. The assessor's value is presumed correct until rebutted with credible evidence.
Key to a South Carolina commercial appeal: ATI reset on purchase
A commercial purchase is an 'Assessable Transfer of Interest' that resets value to market and strips the 15% cap — the classic post-sale spike worth appealing. Appeal to the assessor within 90 days, then the Administrative Law Court.
South Carolina Filing Deadline & Where to File
File With
County Assessor, then Administrative Law Court
Deadline
90 days from notice date
Window Opens
After reassessment notice (county reassessment cycle every 5 years)
Typical Duration
2–6 months
SC assesses owner-occupied at 4% (vs 6% other residential). Legal residence discount applies automatically. 15% cap on reassessment increases for owner-occupied.
⚠️ Deadlines vary by county/municipality in South Carolina. Confirm the exact date for your property's jurisdiction before filing.
How commercial value is proven
Income-producing commercial property is usually valued by capitalizing net operating income (NOI ÷ market cap rate). The strongest appeals come with a clean rent roll, a trailing-12-month operating statement, current vacancy, and market cap-rate support. Where the property is owner-occupied or special-purpose, the cost and sales-comparison approaches carry more weight.
Evidence that wins a commercial appeal
- Current rent roll and a trailing-12-month operating statement
- Actual vacancy and collection loss (vs the assessor's stabilized assumption)
- Market capitalization rate support for the property type and submarket
- Recent arm's-length sales of comparable commercial buildings
- Evidence of physical, functional, or economic obsolescence
- Any change in use, tenancy, or condition since the assessment date
How to appeal a commercial assessment in South Carolina
- 1Pull the assessment — confirm the assessed value, the assessment ratio/class, and how the assessor derived it (income, cost, or sales).
- 2Build the valuation — capitalize actual net operating income and gather comparable sales to establish market value as of the assessment date.
- 3File before the deadline — submit to County Assessor, then Administrative Law Court by 90 days from notice date, with the authorization signed by someone able to bind the owning entity.
- 4Present at the hearing — commercial hearings are evidence-driven; a clean income approach and credible comps carry the day.
Think your South Carolina commercial property is over-assessed?
We pull the assessment, build the income-approach case, and file the appeal. Fee: 20% of first-year savings — only if we win. Nothing upfront, and the reduction can hold for years.
Related resources
Assessment ratios, class rates, and deadlines in South Carolina are set by statute and can change year to year, and often vary by county or municipality. Verify current figures and dates with your county assessor or clerk of the board before filing. This page is general information, not legal or tax advice. TaxedFairly is a product of WebLab LLC.