Homes with an in-law suite for sale in Tranquil Harbor, Oak Island NC

As of October 20, 2026, there are 6 homes with an in-law suite for sale in Tranquil Harbor in Oak Island, NC, with a middle asking price of $699,999 (from $569,900 to $775,000). 1 came on the market in the last week.

As of October 20, 2026, the middle asking price is $699,999, about $344 per square foot for a typical 1,919 sq ft. $500K–$750K: 5; $750K–$1M: 1.

In the 12 months through October 20, 2026, 10 sold at a middle price of $587,500, typically for 93.8% of the first asking price after about 85 days on the market.

In the 12 months through October 20, 2026 they typically sold in about 85 days, at 93.8% of the first asking price.

A mortgage payment has two parts: principal and interest, which depend on the price, your down payment and the rate a lender offers you; and the costs on top — property taxes, homeowners insurance (and flood insurance near the water), HOA dues where there's an association, and mortgage insurance if you put less than 20% down. Each home's page has a calculator that uses the rate you've been quoted and that home's own taxes and HOA dues from the listing. For your actual rate and Annual Percentage Rate (APR), ask a licensed lender — we can introduce you to Joey Milam at Alpha Mortgage Advantage, or you're free to choose any lender.