HILLSBOROUGH EXCAVATION

Precision Foundation Excavation

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Precision Foundation Excavation in

Hillsborough, NJ

Building a lasting home or addition starts with a perfectly excavated foundation. At Hillsborough Excavation, we provide expert foundation excavation services tailored to the unique geological profiles of Hillsborough and Somerset County. Whether you are a homeowner adding a garage, pouring a concrete pad, or a builder constructing a new residential development, our licensed operators deliver the accurate, compliant earthwork your project demands.


What Is Foundation Excavation?

Foundation excavation is the critical first step in construction, involving the precise removal of earth to create a stable cavity for footings, basements, and retaining walls. As expert concrete contractors, there is no job too small. In Central New Jersey, this process must account for the region's dense, clay-heavy soils, shale-rich subsurface layers, and high groundwater tables. Because these local clay soils tend to expand when wet and shrink when dry, precision digging and engineered subgrade preparation are essential to prevent future structural settling and water intrusion. Our process ensures that the depth and dimensions of your cut are exact, providing a safe, solid base for pouring concrete. For existing homes already showing settlement or cracked footings, professional foundation repair can stabilize the structure before further excavation work begins.

Homeowners and builders typically require our foundation excavation services when constructing new homes, expanding existing footprints with structural additions, or building detached garages and pole barns. We handle the heavy lifting while strictly adhering to your property's engineering plans, ensuring the cut matches the required setbacks and elevations dictated by local building codes.

The Benefits of Hiring a

Local Excavation Expert

  • Navigating Complex Local Soils


    The first step in our concrete floor coatings service is surface preparation. We understand that the success of any coating application relies heavily on how well the surface is prepared. We start by thoroughly cleaning the concrete floor using a high-pressure washer to remove any dirt, grime, or oil stains. We then use a floor grinder to remove any existing coatings or roughen the surface to ensure better adhesion of the new coating.


  • Strict Municipal Compliance

    Hillsborough Township enforces strict municipal ordinances for land disturbance and grading. We seamlessly navigate local engineering requirements, ensuring your project aligns with the mandatory Three-Step Process for new structural construction, starting with the township's required Proposed Grading Topo Plan.


  • Experienced Professionals

    When it comes to foundation excavation, experience isn't optional — it's everything. Our operators have hands-on knowledge of Somerset County's soil conditions, local grade requirements, and the site challenges common to Hillsborough and surrounding communities. From reading engineering plans to operating heavy equipment with precision, we bring the skill and judgment needed to get your foundation dug right the first time.


Ready to break ground on your new foundation? [REQUEST A FREE ESTIMATE] Contact our estimating team today to discuss your site plans.

  • Step 1: Permitting & Pre-Planning

    Before any soil is moved, we assist with ensuring all local zoning and engineering permits are secured. For projects disturbing 5,000 square feet or more of land, we ensure compliance with the Somerset-Union Soil Conservation District's erosion control certification, which is required by state law.

  • Step 2: Utility Mark-Outs (Call 811)


    By law, we contact the New Jersey One Call center (811) at least three full business days prior to excavation. We wait for the site to be marked with paint, flags, or stakes to identify critical underground gas, electric, water, and communication lines, ensuring a completely safe dig.


  • Step 3: Site Preparation and Clearing


    Our operators carefully dig the foundation footprint to the exact elevations specified in your engineering plans. For any trench measuring 5 feet or deeper, we implement OSHA-approved protective systems such as sloping, benching, or trench shields to protect our workers and ensure the surrounding trench walls remain stable.

  • Step 4: Precision Excavation & Shoring

    Our operators carefully dig the foundation footprint to the exact elevations specified in your engineering plans. For any trench measuring 5 feet or deeper, we implement OSHA-approved protective systems such as sloping, benching, or trench shields to protect our workers and ensure the surrounding trench walls remain stable.


  • Step 5: Final Grading & Inspection Prep

    Once the foundation is poured, we complete the necessary backfilling. We prepare the site for the Foundation Location and Elevation Certification and the As-Built Grading Plan, which the Hillsborough Engineering Department requires before a Certificate of Occupancy is issued.

Our Step-by-Step Foundation Excavation Process

Safety is our highest priority. We comply strictly with OSHA Subpart P trenching and excavation standards, ensuring every project is overseen by a trained "Competent Person" who classifies soil types, monitors water accumulation, and authorizes protective shoring or shielding systems. During excavation, mechanized equipment is strictly prohibited within a two-foot tolerance zone around marked utilities, where our crews carefully hand-dig to expose lines after our mandatory New Jersey One Call 811 mark-out requests. Furthermore, we adhere to all local building codes and secure necessary approvals from the Hillsborough Engineering Department and the Somerset-Union Soil Conservation District.

www.Hillsboroughexcavation.com