| Abbreviation | Definition |
|---|---|
| LDCA | London and District Construction Association |
| LDN | Load Demand Notification |
| LDR | Liquidated Damages, Reduction |
| LEED | Leadership in Energy & Environmental Design |
| LENI | Lighting Energy Numeric Indicator |
| LET | Lorentz force eddy current testing |
| LFNC | Lao Front for National Construction |
| LHC | Lead Hazard Control |
| LHD | Left Hinged Door |
| Liby | Library |
| LISA | LCA (Life Cycle Assessment) In Sustainable Architecture |
| LJ | Laqnican Joint |
| LLT | Liquid Line Temperature |
| LMC | Low Maintenance Costs |
| Ln. | Lane |
| LO/TO | Lock Out/Tag Out |
| loc. | location |
| LOD | Length Of Disturbance |
| LP | Level Points |
| LP | Loft Plan |