
| 1 | Chandler Hall - Library and Documentation; Riceworld; Visitors and Information Services; Printing; Marketing and Fulfillment Unit |
| 2 | Harrar Hall - Food and Housing Services; Matron's Office; Riceland Cuisine; Mailroom; Radioroom; Central files (Archives); Marsman Travel and Tours; Visitors and Information Services; BPI ATM station |
| 3 | Harrar Hall Conference Room |
| 4 | FF Hill Building - Offices of Administration and Finance, DG, DDGs and Directors offices; Cashier's window; Human Resources Development; Materials Management; Program Planning and Coordination Office |
| 5 | Swaminathan Hall - Office; Training Center |
| 6 | Khush Hall - CIAT; CIMMYT; ICLARM; ILRI; ISAAA; INIBAP; IRRI Club |
| 7-8 | Information Center - Communications and Publications Services; Information Technology Services |
| 9 | Phytotron |
| 9A | Phytotron Annex - Plant Physiology |
| 10 | Ladies' Dormitory |
| 11 | International School Los Baņos; Scientific Supplies Store |
| 12 | Bradfield Hall - Clinic; Grounds Office |
| 13-14 | IRRI Employees' Canteen; ECDC |
| 15 | Service Building - Agricultural Engineering Unit; Physical Plant; Receiving/Shipping; Safety Office |
| 16 | Transport Office; Motor Vehicle Repair Shop |
| 17 | Security Office |
| 18 | Fire Brigade Office |
| 19 | Experiment Station |
| 20 | Umali Laboratory - Entomology and Plant Pathology Division; Agronomy; Plant Physiology and Agroecology Division; GIS Laboratory; IPMO; CREMNET |
| 21-22 | N.C. Brady Laboratory - Social Sciences Division; Plant Breeding, Genetics and Biochemistry Division; Genetic Resources Center |
| 23 | Kenzo Hemmi Laboratory - Soil and Water Sciences |