- Famous Clients click here! Click on Hummer or Navigator pictures for more information. New Orleans Downtown Office New Orleans Airport Office 901 Convention Ctr. Blvd. - Ste.118 4305 Williams Blvd. New Orleans, LA 70130 Kenner, LA 70065 504-522-5656 504-454-7722 fax - 504-464-6684 fax - 504-464-6684 Northshore Office - Covington/Mandeville/Slidell 3433 Hwy. 190, PMB 177 Mandeville, LA 70471 ...www.downsouth.com/nicolls