Where the numbers come from
Every figure on this site comes from a public source and is credited to it. We combine them; we don't change them.
Zillow Research
Zillow Home Value Index (all homes, smoothed, seasonally adjusted) by city and ZIP code, and Zillow Observed Rent Index. Monthly.
Redfin Data Center
Housing Market Tracker by city and ZIP code: median sale price, homes sold, days on market, inventory, months of supply, sale-to-list ratio. Each month is a 3-month rolling window. Redfin is a national real estate brokerage.
Charleston Trident Association of REALTORS®
Local Market Updates for 33 CTAR MLS areas via ShowingTime FastStats, split by single-family and townhouse/condo. Monthly.
U.S. Census Bureau, American Community Survey
5-year estimates of median household income (B19013), median home value (B25077), median gross rent (B25064) and tenure (B25003) for each town and ZIP code.
Federal Housing Finance Agency
All-transactions House Price Index for five-digit ZIP codes. Annual.
Freddie Mac Primary Mortgage Market Survey
Weekly national average 30-year and 15-year fixed mortgage rates.
U.S. Department of the Treasury
Daily 10-year Treasury par yield.
How we calculate
- Town figures come from each source's own town-level data. James Island and Rockville use Zillow's ZIP-code series (29412 and 29487) because Zillow publishes no series for those towns.
- Monthly payment is principal and interest on a 30-year fixed loan at the latest Freddie Mac rate, with the stated down payment. It excludes property tax, insurance, flood insurance, HOA dues and mortgage insurance.
- Price to income divides the latest Zillow home value by the Census 2020–2024 median household income.
- Months of supply under 4 is labeled a seller's market, 4 to 6 balanced, over 6 a buyer's market.
- Small towns with fewer than 10 sales in a 3-month window are flagged, because their medians swing widely.
Corrections
Spot something wrong? Email corrections@capeislandpoint.com and we'll fix it in the next update.