Nope...if you look at it without the line it is clear there are two buildings.It shows one house on that address your L shape red line is dividing one house in half.Why don't you click on the L shaped property valued at 930K in my link & see what the adress is?
http://www.zillow.com/homedetails/937-18th-Ave-Honolulu-HI-96816/603748_zpid/#{scid=hdp-site-map-bubble-address}
Click on the one that says 930k L shape lot
You will see 669k 774k
Honolulu Hawaii Homes for Sale & Honolulu Real Estate - Zillow