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Foundation plans drawn for New Jersey soil and code

The foundation is the sheet a plan reviewer opens first and the one a contractor cannot improvise around. We draw footings, walls, slabs and the details underneath them to the frost depth, soil bearing and code edition your municipality actually enforces.

Footings sized to the load above them

Footing width and thickness follow from the load path, not from a table copied off the last job. Point loads from beams and posts get their own pads, and the plan shows where each one lands so nothing gets poured before the framing layout is settled.

Frost depth, drainage and waterproofing

New Jersey frost depth runs roughly 30 to 36 inches depending on the county, and a footing drawn shallow is a footing that heaves. The set carries the frost note, the foundation drain, the damp-proofing detail and the backfill sequence, because those are what fail together.

Additions onto existing foundations

Tying new footings into a house from 1958 is where most residential foundation work actually lives. The plan shows the excavation limit, the doweling or epoxy anchorage into the existing wall, and the underpinning detail where the new footing sits deeper than the old one.

Common questions

How deep do footings have to be in New Jersey?
The bottom of an exterior footing must sit below the local frost line, which most New Jersey municipalities set at 30 to 36 inches. The building department publishes the figure it enforces, and that is the number we draw to — not the state minimum.
Do foundation plans need an engineer’s seal?
Prescriptive residential foundations drawn to the IRC often do not. Anything engineered — a retaining condition, poor soil, an unusual span or a commercial structure — does, and we coordinate the seal rather than leaving you to find one at filing time.
Can you work from a soil report?
Yes, and where one exists the bearing capacity in it governs the footing sizes. Without a report we design to the presumptive values the code allows, and the plan says so on its face.

Tell us what you are building

Send the scope and whatever drawings exist today. You get a written quote with a sheet count and a delivery date — not a range.

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