Sandcastle Realty, Inc. Real Estate Sales Agencies & AgentsReal Estate Rentals Sandcastle Realty, Inc. Visit Website Request Info 34444 Coastal Hwy. Unit 9 Bethany Beach, DE 19930 (302) 539-0525 800-234-4283 (302) 539-3300 (fax) Hours: Monday through Saturday 9:00am to 5:00pmClosed Sundays About Map About Sales and rentals specializing in South Bethany and surrounding communities. What's Nearby? Distance: 5 10 15 20 25 50 mi.