How to Apply for South Carolina’s 4% Legal Residence Assessment in York and Lancaster County

Short answer: If you buy a home in York County or Lancaster County, South Carolina and live in it as your permanent home, you have to apply to the county assessor for the 4% legal residence assessment. It is not automatic. Until you are approved, the county assesses the home at the 6% ratio used for second homes and rentals and includes school operating millage on your bill. Apply as soon as you move in and before the January 15 tax due date for the year you first claim it, with copies of your South Carolina driver’s license and South Carolina vehicle registrations showing the new address.

This guide is written for buyers in Rock Hill, Fort Mill, Tega Cay, Clover, Lake Wylie and Indian Land, many of whom are moving across the state line from Charlotte. Every rule below comes from the South Carolina Code of Laws, the SC Department of Revenue (SCDOR), the SC DMV, and the York and Lancaster County assessor offices. Sources are listed at the end.

What is the 4% legal residence assessment?

South Carolina does not tax a home on its full market value. The county multiplies the market value by an assessment ratio and then applies local millage. Under S.C. Code Section 12-43-220(c), an owner-occupied legal residence, plus up to five contiguous acres, is assessed at four percent of fair market value. Other residential property, such as a second home or a rental, is assessed at six percent.

The legal residence classification also removes the school operating portion of the millage from your bill. Lancaster County’s Citizens’ Guide to Reassessment describes the result as a savings of more than one third of the tax bill compared with the 6% ratio. School debt millage and county and city millage still apply.

For a buyer, that makes this one application the single biggest lever on your first South Carolina tax bill, and on the escrow deposit your loan servicer collects for taxes.

Who qualifies?

State law and both county applications look for the same core facts. You qualify if all of these are true:

• You own the home, fully or in part, by deed or life estate, or the home is held in a trust whose income beneficiary lives there.
• You actually live there and it is your domicile, meaning your one permanent home.
• You do not claim to be a legal resident of any other state, county or country for any purpose.
• Neither you nor a member of your household (your spouse, unless legally separated, and dependent children under 18) occupies another home that has the legal residence classification.
• No part of the property is rented out or used for a business, other than limited exceptions in the statute. The law also looks at whether the home is rented for more than 72 days in a calendar year.

The burden of proof is on you as the owner-occupant, and the assessor can ask for more documents, including your most recent South Carolina income tax return. Both county applications ask whether you file, or will file, as a South Carolina resident on your state income tax return. If you are moving from North Carolina, that question matters, and it is worth a quick talk with your tax preparer about your part-year return.

When do you have to apply?

The statute says the 4% ratio does not apply unless you apply before the first penalty date for the tax year in which you first claim it. SC Department of Revenue regulation 117-1800.1 identifies that date as January 15.

Two details work in your favor:

• Part of a year counts for the whole year. A home that qualifies as your legal residence for any part of the tax year gets the 4% ratio, and the school operating exemption, for the entire year. So if you close and move in this fall, you can still qualify for this tax year if your application is in before the January 15 due date.
• You only apply once. No further application is needed while you keep living there. You must notify the assessor within six months if the home stops qualifying, for example if you move out and rent it.

Miss the window and the home stays at 6% for that year. The statute does let the local taxing authority extend the time for a reasonable cause, and it allows a refund claim for overpaid taxes (more on that below), but neither is guaranteed. The simplest plan is to file within your first few weeks in the home.

Do your driver’s license and car registration first

Both counties require copies of a South Carolina driver’s license or ID and South Carolina vehicle registrations that show the address you are claiming. For buyers coming from Charlotte, this is the step that slows things down.

The SC DMV gives new residents 45 days to get a South Carolina license and 45 days to title and register their vehicles. Because the assessor wants those documents with the application, a practical order of operations after closing is:

1. Move in and change your address with the post office and utilities.
2. Get your South Carolina driver’s license or ID at the SC DMV, for you and your spouse.
3. Register every vehicle in South Carolina at the new address. Remember that registration also starts South Carolina’s vehicle property tax, which is billed through the county.
4. File the legal residence application with the county assessor and keep a copy of everything you send.

How to apply in York County (Rock Hill, Fort Mill, Tega Cay, Clover, Lake Wylie)

The York County Assessor uses a written Application for Special Assessment as Legal Residence. The instructions say to:

• Answer every question. The form warns that an application with missing answers will be denied, and one without supporting documents will be returned unprocessed.
• Give the last four digits of the Social Security number for each deeded owner who lives in the home.
• Sign and date it.
• Attach copies of your driver’s license and vehicle registration showing the property address, plus your spouse’s if you are married.
• If the home is in a trust, attach the part of the trust that names the income beneficiary. The form also asks whether an LLC owns the property.

York County accepts the completed packet by email, mail or fax. The office is in the Government Center at 6 South Congress Street in York (mailing address P.O. Box 57, York, SC 29745), phone 803-684-8526, open weekdays 8 a.m. to 5 p.m. The application asks you to allow ten days for processing. The York County Tax Collection page also lists the assessor as the contact for refunds on real estate taxes.

How to apply in Lancaster County (Indian Land and Lancaster)

Lancaster County’s Assessor FAQ offers three ways to apply: online single owner or multiple owner applications with e-signature and document upload, in person at the Assessor’s office in the County Administration Building at 101 North Main Street in Lancaster (803-285-1565), or a printable form. The county’s instructions say not to email or fax a paper application because original signatures are required, so mail it, hand deliver it, or use the online option.

Lancaster’s minimum documents are more detailed than York’s:

• A South Carolina driver’s license or ID for every owner-occupant and the spouse, showing the address. A limited term license needs immigration documents listed in the instructions.
• South Carolina vehicle registrations for every owner-occupant and the spouse at that address.
• No vehicle, or you drive a company car or a relative’s car? Complete the county’s Certification of No Vehicles and include two of the three major utility bills (gas, water, power) in your name at the address.
• If you are married, your spouse must sign and provide documents even if the spouse is not on the deed and does not live there.
• If separated, a court approved separate maintenance order; if divorced, the final divorce decree.
• For a trust, the title page, signature page and the section naming the income beneficiary.

Is my home in York County or Lancaster County?

Do not go by the mailing address alone. Indian Land is in Lancaster County, and some homes with a Fort Mill mailing address are in Lancaster County rather than York County. Check the county shown on your deed, your closing documents or the tax notice, and file with that county’s assessor.

What if you missed the deadline?

Section 12-43-220(c)(3) lets a taxpayer apply for a refund of property taxes overpaid because the home was eligible for the legal residence ratio, using the procedure in Section 12-60-2560. You must show the home really was your legal residence and domicile for the period. SC counties, such as Charleston County on its refund request form, note that state law generally limits these refunds to two years, and a county council may allow more for the county portion by ordinance. Ask the York or Lancaster County assessor about its refund form and documents.

The other side of the rule is strict. If you claim the 4% ratio and are later found not eligible, or you stop qualifying and do not tell the assessor within six months, the statute imposes a penalty equal to one hundred percent of the tax paid, plus interest. York County even publishes a form to report suspected legal residence fraud.

Why your first escrow estimate may look high

When you buy, the county treats the sale as an assessable transfer of interest and resets the taxable value to market value, which restarts the 15% five-year cap on reassessment increases. That means the seller’s last bill is a poor guide to yours. On top of that, your escrow may be estimated before your legal residence approval shows on the county’s records, and a newly built home’s last bill may reflect only the land or a partly finished house.

Once the 4% classification is on the account, your servicer’s annual escrow analysis picks up the actual bill. If too much was collected, federal escrow rules require the servicer to account for the surplus. Send your servicer a copy of the approval letter or the updated tax notice so the change is caught at the next analysis.

Turning 65, disabled or blind? There is a second exemption

The 4% assessment is handled by the assessor. The separate Homestead Exemption is handled by the county auditor and exempts the first $50,000 of a legal residence’s fair market value for owners who, as of December 31 of the prior year, were at least 65, totally and permanently disabled, or legally blind, and had lived in South Carolina for a full calendar year. SCDOR notes the state temporarily authorized an additional amount for certain recipients for tax year 2026, so ask the auditor what applies to you. The Homestead Exemption applies only to your legal residence, so it works alongside the 4% classification rather than replacing it.

Thinking about using your equity later?

Lower South Carolina taxes are part of why many Charlotte-area families choose York and Lancaster counties, and over time the equity you build in that home can help fund a new roof, an addition or other big projects. When that day comes, our HELOC guide for Rock Hill and Fort Mill homeowners explains how a home equity line works in South Carolina. If you are still shopping, start with our Fort Mill mortgage broker page, the Rock Hill home loan guide or the Indian Land mortgage page, and compare bills on both sides of the line with our Charlotte area property tax guide. For everything else that comes with your first year in a home, see the owning a home in NC and SC hub and our first-year homeowner guide.

1st Advantage Mortgage is a licensed Mortgage Broker in North and South Carolina. We compare purchase loans and home equity options from several wholesale lenders on one application, and our loan officers can walk you through what your tax and escrow picture may look like before you close.

Frequently asked questions

Is the South Carolina 4% assessment automatic when I buy a home?

No. You must apply to the county assessor. Until you are approved, the home is assessed at the 6% ratio and the school operating millage stays on the bill.

What is the deadline to apply for legal residence in York or Lancaster County?

Before the first penalty date for the tax year you first claim it, which SCDOR regulation identifies as January 15. If you lived in the home as your legal residence for any part of the tax year, the 4% ratio applies for that whole year.

What documents do I need for the legal residence application?

Both counties require copies of a South Carolina driver’s license or ID and South Carolina vehicle registrations showing the property address, for every owner-occupant and the spouse. Lancaster County also accepts a Certification of No Vehicles with two utility bills if you do not own a car, and asks for trust, separation or divorce documents when they apply.

Can I get a refund if I paid taxes at the 6% ratio by mistake?

Possibly. State law allows a refund claim for taxes overpaid on a home that was eligible for the legal residence ratio, generally limited to two years. Contact your county assessor for the refund form and proof required.

Do I need to apply again every year?

No. One approval stays in place while you own and live in the home. You must tell the assessor within six months if you move out, rent the home or otherwise stop qualifying.

Can I keep the 4% ratio if I rent my home out sometimes?

Renting can cost you the classification. The statute looks at whether the home is rented for more than 72 days in a calendar year, and the assessor can ask for tax returns, including Schedule E, to check rental income. Ask the assessor before you list it.

Sources

• South Carolina Code of Laws, Title 12, Chapter 43, Section 12-43-220(c)
• SC Department of Revenue regulation 117-1800.1, Application for Special Assessment as Legal Residence
• SC Department of Revenue, Property Tax Exemptions
• SC DMV, Moving to SC: License and Moving to SC: Vehicle
• York County, Assessor, Legal Residence Application and Tax Collection
• Lancaster County, Assessor FAQ, Legal Residence Application Instructions and Citizens’ Guide to Reassessment
• Charleston County, 4% Legal Residence Exemption Request for Refund

Sources reviewed November 4, 2026. Tax law, forms, deadlines and county procedures move. Verify the current version with the York County or Lancaster County assessor. Nothing in this legal-residence note is tax counsel or legal counsel.

Prepared by 1st Advantage Mortgage Broker LLC (NMLS 2468711), an Equal Housing Opportunity firm. This South Carolina legal-residence note is general information, not tax advice and not an offer to lend. Financing still depends on credit, the property and program fit, and county instructions can change.