The quick read: compare multifamily construction lenders in South Carolina by putting every lender type through one grid, meaning how it sets leverage, what recourse it wants, what benchmark it floats over and which takeout it expects, and then by checking that your stabilized pro forma carries the property tax a finished apartment building actually pays. On a sub-$15 million deal, that tax line can change how much the lender will fund.
The South Carolina Department of Revenue's property tax manual says a primary residence is assessed at 4% if it qualifies, while commercial property and vacant land are assessed at 6%. An apartment building owned by a developer is not anyone's owner-occupied legal residence, so the lender underwrites it at the higher ratio. This is the statewide comparison page; for the city-level playbook, read how to finance small apartment construction in Charleston.
Asset: ground-up apartments, five or more units Market: South Carolina (Charleston, Greenville, Columbia, Myrtle Beach) Deal size: under $15 million of total loan Loan type: floating-rate senior construction loan, funded through monthly draws Comparison basis: sponsor cash required, recourse left open, and the exit test at maturity Tax fact the lender underwrites: 6% assessment ratio on the completed building
How do you compare South Carolina construction lenders on a sub-$15M apartment deal?
Compare South Carolina construction lenders on a sub-$15 million apartment deal by sending every lender type the same budget, schedule and stabilized pro forma, then lining up how each sets leverage, what recourse it wants, what it floats over and which takeout it expects. Rate alone does not show the difference in sponsor cash.
The grid below describes how each lender type usually structures these terms. It does not quote a leverage percentage or a spread for any lender type, because none is published on a public page for this market; ask each lender for its own numbers on your budget. The benchmark rates in the rate column are dated.
Table 1: South Carolina multifamily construction lenders under $15M, by lender type (benchmarks as of September 21, 2026)
| Lender type | How leverage is set | Recourse to expect | Rate basis | Usual takeout path |
|---|---|---|---|---|
| Community and regional banks | The lower of a loan-to-cost test and an as-complete value test, weighed against the sponsor's deposits and history | Ask whether it wants a completion guaranty, a repayment guaranty, or both, and what releases them | Spread over prime (7.00%, FRED) or SOFR (3.85%, FRED); ask about a floor | Bank mini-perm or refinance into a permanent loan |
| National banks | Same cost and value tests; ask which covenants apply | Ask which guaranties it wants and which milestones release them | Spread over SOFR (3.85%, FRED); a purchased rate cap may be required | Agency, life company or bank permanent loan |
| Life insurance companies | Ask for both the cost and the value test | Ask whether recourse steps down at completion | Ask whether the rate is fixed or floating | Their own permanent loan, if the deal fits |
| Debt funds and private credit | Ask how much of the cost stack it funds, and at what all-in price | Ask what recourse it wants and what fees come with it | Spread over SOFR (3.85%, FRED); ask whether a rate cap is required | Lease-up bridge, then a permanent loan or a sale |
The first two columns set the size of the equity check. The last three set the risk you still carry once the loan closes, and how you get out of it.
How does South Carolina's 6% assessment ratio change a construction loan's sizing?
South Carolina's 6% assessment ratio changes a construction loan's sizing because the lender sizes the loan against the completed building's stabilized net operating income, and property tax is one of the largest expenses in that income. A pro forma that carries a residential tax bill overstates income, value and supportable debt.
The state's Code of Laws sets the rule. Section 12-43-220(c)(1) taxes an owner-occupied legal residence "on an assessment equal to four percent of the fair market value of the property," and section 12-43-220(e) says "All other real property not herein provided for shall be taxed on an assessment equal to six percent of the fair market value of such property." The Department of Revenue's September 2025 manual puts it plainly: commercial property and vacant land are assessed at 6%.
The tax is built from three pieces, which the manual lists as "(1) the property value, (2) the assessment ratio applicable to the property, and (3) the millage rate imposed by the taxing jurisdiction." It defines a mill as "one-thousandth of a dollar or .001."
Illustrative example (arithmetic, not a real deal or a real millage): a finished building appraised at $12,000,000 has an assessed value of $720,000 at 6%. At an illustrative 250 mills, the annual tax is $180,000. The same value at the 4% residential ratio would be assessed at $480,000 and taxed $120,000. That $60,000 gap in net operating income is worth roughly $923,000 of value at an illustrative 6.5% cap rate, which is value a lender will not lend against.
Millage: set every year by each county, city and school district, so ask the county for the rate at your parcel, not a statewide average. Assessment ratio: 6% for a non-owner-occupied rental building. Value: the completed building's appraised value, not the land you bought.
When does the tax bill jump during a South Carolina construction project?
The tax bill jumps when the finished building is first valued, because the Department of Revenue's manual says completing new construction triggers a reappraisal of the parcel. The manual adds that "after completion, the fair market value of improvements and additions will be added to the fair market value of a parcel."
The manual also notes the state's 15% cap on reassessment increases "does not apply" to "the fair market value of the improvements or additions in the year they are first subject to property tax." In plain terms, the cap will not smooth the first full tax bill on a new building, so the lender's exit test should carry the full-value tax from day one.
Construction budget: carry tax on the land through the build. Lease-up budget: carry tax on the completed value from the first year it is billed. Exit test: underwrite the permanent loan on full-value tax, not the construction-period bill.
The manual also says that after an assessable transfer of interest, property at the 6% ratio "may be subject to a partial exemption of the appraised value if certain eligibility requirements are met." Whether your project qualifies is a question for tax counsel, and get that answer in writing before you count any saving in the pro forma.
What do SOFR and prime mean for a floating South Carolina construction quote this month?
SOFR and prime set the floor under every floating South Carolina construction quote, because the lender adds its spread to one of them and resets the coupon as the benchmark moves. Size the interest reserve at a rate above today's all-in coupon, since short-term benchmarks moved higher this month.
On September 16, 2026, the Federal Reserve announced that the Committee "decided to raise the target range for the federal funds rate by 1/4 percentage point to 3-3/4 to 4 percent." The Federal Reserve Bank of St. Louis reports the Secured Overnight Financing Rate at 3.85% and the bank prime loan rate at 7.00%, both for September 21, 2026.
Benchmark: ask which one applies and whether a floor sits under it. Rate cap: ask whether a purchased cap is required, at what strike, and whether its cost sits inside the budget. Reserve rate: ask what rate the lender used to size the interest reserve, and over how many months.
Bank standards are unchanged, and they are tight. The Federal Reserve's July 2026 Senior Loan Officer Opinion Survey, based on responses from 56 domestic banks and 18 U.S. branches and agencies of foreign banks, reported that "standards for construction and land development (CLD) loans remained basically unchanged on net," and that "a moderate net share of banks reported weaker demand for CLD loans," and that "a significant net share of banks reported that lending standards were at the tighter end of their range for CLD loans." If one bank declines your deal, try a different lender type rather than the next bank of the same kind.
How much apartment construction is South Carolina permitting?
South Carolina is still permitting apartment construction, and lenders read those numbers as the supply your lease-up will compete with. The Census Bureau's Building Permits Survey shows the state authorized 4,953 units in buildings with five or more units year to date through July 2026, across 147 buildings.
The Census Bureau's July 2026 current-month state file shows 474 units in 27 buildings with five or more units. Statewide totals do not tell you what is being delivered within a mile of your site, so pull permits and deliveries for your submarket before the lender asks.
Lease-up assumption: show the absorption pace you used and the competing projects you counted. Rent comps: use leased-up comparables, not asking rents on buildings still in lease-up.
How do Charleston, Greenville, Columbia and Myrtle Beach differ for a construction lender?
A construction lender underwrites Charleston, Greenville, Columbia and Myrtle Beach on their own rent comps, insurance exposure, competing supply and exit depth, so the same lender can size the same budget differently in each city. Prepare the market evidence each metro will be questioned on before the first term sheet arrives.
Charleston: coastal sites draw questions on flood zone, wind insurance and elevation, and those costs flow into the operating budget the lender sizes against. The city-level playbook is in the Charleston guide linked above.
Greenville: expect questions on how your rents compare with recent deliveries near the site and on lease-up pace.
Columbia: if the project leases by the bed to students, expect questions on pre-leasing and on who buys a student-housing building at exit; a conventional project will be asked about conventional comps.
Myrtle Beach: coastal insurance and flood questions apply here too, and lenders will ask how the building will be leased, because short-term rental income is underwritten differently from long-term apartment rent.
In every metro the property tax line is the same mechanism: the local millage applied to 6% of the completed building's value. For the Florida version of this comparison, see multifamily construction financing in Florida.
How do you get construction lenders competing on a South Carolina apartment deal?
You get construction lenders competing on a South Carolina apartment deal by sending one complete package, meaning budget with sources and uses, permit status, sponsor track record and liquidity, a stabilized pro forma carrying the 6% tax line, and a takeout plan, to several lender types at once, then ranking replies on sponsor cash.
YieldStack is a commercial mortgage brokerage, not a lender. YieldStack arranges commercial real estate financing nationwide, matching a request against 20,000+ loan programs, with a median offer in under an hour, from an institutional lender. It is a 5-minute submit. It costs Zero upfront to submit a deal and review offers; YieldStack's broker fee is 0.50–1.00% of the loan amount and is paid only at closing. Every credit decision is made by the lender; YieldStack arranges the introductions and negotiates on the borrower's side, and no loan, rate, or closing is guaranteed.
The brokerage route is one option alongside calling lenders directly. For how construction debt is structured from first draw to takeout, see construction loans, and for the statewide picture see the South Carolina market page. When your budget and permit status are ready, submit your South Carolina construction deal for lender review.
The bottom line
In South Carolina, compare construction lenders on how each lender type sets leverage, recourse, rate basis and takeout, and rank the quotes on sponsor cash, not rate. Then check the pro forma: a finished apartment building is assessed at 6%, and the first full-value tax bill arrives after completion. A lender sizes to that number, so you should too.