| Business | Phone |
| Alan K Chesnutt Civil Engineer 717 E Grand Ave, Arroyo Grande 93420 | (805) 489-5268 |
| Jensen-Lenger Surveys 1203 Carpenter Canyon Rd, Arroyo Grande 93420 | (805) 489-6647 |
| Michael B Stanton 775 Los Ciervos, Arroyo Grande 93420 | (805) 440-4215 |