| Company | Address, phone, e-mail | City | State | |
|---|---|---|---|---|
 | Acton Mobile Industries | 8007A Corporate Dr., Baltimore, MD 21236 Phone 410-931-9100 | Baltimore | Maryland |
 | Modular Space Corporation | 920 Todds Lane Baltimore MD 21237 Phone 410-686-9440 Send Email | Baltimore | Maryland |
| Modular Space Corporation | 2505 Aurora Place Waldorf MD 20601 Phone 301-372-1282 Send Email | Washington D.C. | Maryland |
 | Beracah Homes | 9590 Nanticoke Business Park Dr., Greenwood, DE 19950 Phone 302-349-4561 | Greenwood | Delaware |