| BS | Basement |
| Closed | Closed |
| COLMN | Columns |
| CMasonry | Continuous Masonry |
| Crawl | Crawl Space |
| Finished | Finished Basement |
| HillFnd | Hillside Foundation |
| NONE | None |
| Open | Open |
| Other | Other |
| PRLSW | Parallel Shear Walls |
| PiersOnly | Piers |
| Piers | Piers/Pilings/Stilts |
| PILES | Piles |
| Post | Post and Pier |
| PostsOnly | Posts |
| R | Raised |
| S | Slab |
| Slab | Slab on Grade |
| SLDPW | Solid Perimeter Walls |
| Subgrade | Subgrade Crawl Space |
| Unfinished | Unfinished Basement |
| Walkout | Walkout Basement |
|