Code: FO (Permit type acronym)
Description: (Foundation) is the part of a building that sits on or in the ground and supports all the weight of the structure above. It spreads the load safely into the soil so the building does not settle, crack, or collapse.
Practical Meaning: For a NYC homeowner, this means FO on plans or DOB records usually points to work or details related to your building’s foundation, such as footings, slabs, or foundation walls. If there is a problem with the foundation, it can lead to serious structural issues, so you may need a licensed engineer to evaluate cracks, movement, or water problems.
Where You May See It: You may see FO on architectural or structural drawings, in DOB plan sets, in permit descriptions, and in internal notes from architects or engineers that refer to foundation work. It can also appear in consultant reports that talk about foundation conditions or repairs.
Why It Matters: Foundation problems can lead to structural damage, unsafe conditions, and expensive repairs, and they may affect refinancing, resale, or insurance. If DOB finds unsafe foundation conditions, you can face violations, repair orders, or limits on using parts of the building until issues are fixed.