New Construction in South Carolina: Avoiding the Year-Two 6%-to-4% Escrow Shock — Palmetto Passage
Updated October 2026
A builder's payment estimate for a new Lexington home may use taxes from an almost empty lot. After the county adds the completed house, the tax bill can rise sharply. If legal-residence approval is also missing, the first full assessment may reflect 6% treatment rather than the expected 4% owner-occupied treatment.
Two separate changes drive the shock
The first change is taxable value: land alone becomes land plus a finished dwelling. The second is assessment classification: an eligible primary residence must receive county approval for the 4% legal-residence ratio and exemption from school operating taxes.
A move from 6% to approved 4% treatment generally lowers taxes; it does not cause the increase. The surprise comes from the completed home's value, delayed approval or both. Actual timing depends on construction completion, county records and the tax billing cycle, so the increase is not always confined to year two.
| Estimate used at closing | What may happen later |
|---|---|
| Prior vacant-lot bill | Finished improvements enter the assessment |
| Assumed 4% classification | County bills at 6% pending approval |
| Builder's insurance estimate | Final replacement-cost premium differs |
The 4% figure is an assessment ratio, not a 4% annual tax rate. Review state property-tax guidance through the South Carolina Department of Revenue and obtain parcel-specific estimates from the county.
Build the escrow around the finished home
Ask the lender to estimate taxes using the completed property's expected value and applicable millage. Request both approved legal-residence and temporary 6% scenarios. Bills under 6% treatment can sometimes run approximately 2.5 to 3.5 times the owner-occupied bill because school operating taxes also differ.
Use the monthly payment calculator to stress-test those scenarios. Coastal construction also needs realistic wind, hail and flood premiums rather than a generic statewide insurance allowance.
An escrow shortage can produce two simultaneous increases: a higher ongoing collection and repayment of the prior shortfall. The Consumer Financial Protection Bureau explains mortgage servicing and escrow mechanics.
Make approval a post-closing priority
- Obtain the county's legal-residence application and evidence requirements.
- Submit promptly once eligible; retain confirmation and supporting documents.
- Check the assessment notice and tax bill rather than assuming approval.
- Send corrected tax information to the servicer and request an escrow review.
South Carolina's supervising closing attorney can explain the settlement's tax proration assumptions. Compare those credits with the closing cost estimator: a seller credit at closing does not guarantee enough money for the next full tax bill.
Compare Current Mortgage Rates
Compare current APRs, points, fees, and estimated monthly payments from participating lenders below.
Loan Program Comparison: 2026 Benchmarks
New Construction in South Carolina: Avoiding the Year Two 6% to 4% Escrow Shock — Choose a mortgage by comparing eligibility, upfront cash and total monthly costs, not the advertised rate alone. Conventional, FHA, VA and USDA serve different borrowers. Confirm county limits, taxes, insurance and lender requirements before comparing personalized Loan Estimates for your household.
Historical 2025 one-unit comparison: conforming $832,750; FHA floor $541,287. County and unit-count limits can differ.
| Loan program | Down payment / equity | 2026 one-unit baseline | Costs and page-specific comparison |
|---|---|---|---|
| Conventional | 3%–5% subject to eligibility | $832,750 | PMI generally below 20% down |
| FHA | 3.5% at 580+; 10% at 500–579 | $541,287 floor | 1.75% upfront MIP; 0.55% annual for >95% LTV, base loan ≤$726,200, term >15 years |
| VA | 0% for eligible borrowers | No VA limit with full entitlement | No monthly PMI; funding fee unless exempt |
| USDA | 0% for eligible borrowers | Income, address and repayment eligibility | Guarantee and annual fees; confirm current schedule |
| Jumbo | Lender-specific cash and reserves | Above applicable conforming limit | Lender-specific pricing and insurance |
| Home Equity / Refinance | Equity and underwriting dependent | Property and lender dependent | Compare closing costs, term and break-even |
Sources: FHFA limits; HUD FHA limits.
Editorial Methodology & Primary Sources
Verification date: Not recorded; check the primary source and lender timestamp before relying on an estimate.
Rate comparisons use participating lender feeds, not a whole-market survey or guaranteed offers. Freddie Mac PMMS is a market benchmark, not a personalized quote. Calculator models rely on published regulatory formulas and disclosed assumptions rather than fabricated first-person loan testing.
Monthly principal and interest use the amortization formula P × r / (1 − (1 + r)−n), where r is the monthly note rate and n is the number of payments; at zero interest use P / n. PITI adds monthly property taxes and homeowners insurance; PMI is separate. APR includes applicable finance charges under Regulation Z and is not the note rate used for payments. Compare lender Loan Estimates for actual APR and fees.
- Consumer Financial Protection Bureau (CFPB) — Loan Estimates, APR and borrower disclosures; Regulation Z.
- U.S. Department of Housing and Urban Development (HUD / FHA) — FHA program guidance.
- U.S. Department of Veterans Affairs (VA) — VA loan eligibility and benefits.
- Freddie Mac Primary Mortgage Market Survey (PMMS) — published rate benchmarks.
- U.S. Census state tax collections — state property tax benchmarks; confirm parcel-specific assessments and exemptions with the state revenue department and local assessor.
- SC Housing — state housing finance and property tax authority.
- South Carolina Department of Revenue — state housing finance and property tax authority.
The payment snapshot uses illustrative annual taxes of 1% of home price, $1,200 insurance and 0.5% PMI below 20% down, not verified local quotes. Other calculators disclose their inputs and assumptions. Published guidance and lender feeds may change independently; confirm current program rules, taxes and offers before a decision.