How to Prep Your Lot for New Construction: Excavation Checklist

Checklist goals and intended users

Want to avoid permit delays and costly surprises once excavation starts? This checklist reduces surprises and meets local permitting and environmental rules. It protects trees and utilities and helps deliver a build-ready site with proper grading, drainage, and safety tolerances.

This guide is for developers, contractors, and informed homeowners prepping lots in Northern Virginia and the Piedmont. We organized the checklist to follow the project sequence from planning and surveys through permits, clearing, grading, and the pre-construction handoff.

Experts at RegaEng recommend starting with a site analysis that maps property boundaries, contours, orientation, and visible features. Fairfax County typically requires an approved erosion and sediment control plan and permit for disturbances of 2,500 square feet or more. The Virginia Department of Environmental Quality regulates construction stormwater through the VSMP, so some sites will also need a SWPPP.

Confirm surveys, soil reports, and permits before any clearing

Before you bring a backhoe or crew onto the lot, ask one simple question: is the site surveyed and permitted? Starting without that answer risks delays, fines, and costly rework.

Begin with a professional site analysis that maps property boundaries, contours and elevations, orientation, and visible features. Experts at RegaEng recommend this baseline before any clearing or excavation.

What to survey and test first

Order geotechnical and soil investigations early. These reports confirm soil composition, bearing capacity, reactivity, and groundwater conditions that shape foundation and dewatering plans.

We recommend getting these tests before finalizing excavation methods. See detailed guidance from site investigation experts when choosing test locations and depths.

Identify and mark all underground and overhead utilities before digging. Utility locates and clear markings prevent strikes, service outages, and safety incidents.

Permits, thresholds, and timing to avoid holds

Know local thresholds before you clear soil. In Fairfax County and many Northern Virginia jurisdictions, disturbing 2,500 square feet or more usually requires an approved erosion and sediment control plan and permit.

Sites that meet state or local thresholds must also comply with the Virginia Stormwater Management Program and SWPPP requirements. Check requirements early so permits are approved before mobilizing equipment.

Who to involve early:

• Hire a licensed surveyor to map boundaries and set control points.
• Engage a geotechnical engineer for borings, lab tests, and a soil report.
• Bring in a permitting specialist or civil engineer to prepare E&S and stormwater plans.
• Loop in your excavator or lot‑clearing contractor so bids reflect survey and test results.

Do surveys, tests, and permitting before clearing. We recommend this sequence to keep your start date firm and avoid stop-work orders.

Lock in Safe Utility Locates Before You Dig

Want to avoid a utility strike that stops work and risks injury? Locate and document utilities before any excavation so crews dig safely and your schedule stays on track.

Call 811 or your local one‑call center several business days before digging so public utility owners mark their underground facilities. This free service notifies gas, electric, water, sewer, and telecom operators to place temporary marks on site. 811 Before You Dig

Remember 811 usually covers public service up to the meter only. Privately owned lines like landscape lighting, private drains, propane, or septic are typically not marked by one‑call.

For private lines hire a locating company that uses ground penetrating radar and electromagnetic locators. Those tools find both nonmetallic and metallic utilities that 811 won’t show.

Use APWA color codes when you record marks so everyone reads the site the same way. Red is electric, yellow is gas, orange is communications, blue is potable water, green is sewer, purple is reclaimed water, and white shows proposed excavation.

Follow a simple routine to lock in safe dig tolerances and avoid surprises.

• Schedule 811 several business days before mobilizing and provide clear dig locations and project contact information.
• Document every mark with photos and notes that include color, abbreviations, and any depth or line count shown.
• If you see private services or suspect unmarked lines, hire a private locator using GPR or EM equipment to confirm locations.
• Coordinate with utility owners to confirm tolerated offsets and to request test holes or hydro‑excavation where marks are unclear.
• Outline your planned digs in white paint so locators and crews share the same footprint before any machine touches soil.

Locates and clear documentation prevent outages, fines, and delays. We recommend confirming marks on site the day crews arrive so your excavation starts safely and on schedule.

Plan for trees first: preservation, protection, and sensible removal

Want to keep valuable shade and curb appeal without risking foundations or schedule? Start by developing a tree protection and preservation plan with a certified arborist or urban forester during early design. We recommend this be part of your bid package so everyone knows which trees stay, which go, and what protections are required. See the guidance from extension services on tree protection for what that plan should cover.

Decide retention by looking at health, species tolerance, age, and distance to planned foundations. Measure trunk diameter at breast height and map the critical root zone using roughly one foot of radius per inch of trunk diameter to avoid needless disturbance. Planting distance matters too; plan on keeping about 20 feet from building perimeters for most trees and more for invasive species.

Protect retained trees on site

Protect trees with rigid fencing around the protection zone before any work starts and keep it in place for the job. Limit grading, material storage, and foot traffic inside protection zones and use hand tools or air excavation where roots must be exposed.

Stump strategy: grind for speed, extract for permanent stability

Stump grinding is fast and common for below‑grade clearance and is usually done to about 6–12 inches below grade for construction sites. Full stump extraction removes the rootball and is worth it when roots will interfere with foundations, slabs, utilities, drainage, or long‑term heavy use.

For more on grinding depths and when to choose extraction, see guidance on stump preparation for construction. stump grinding best practices

Right machines and crew sizes to hit schedule and protect the site

Use mini or compact excavators, skid steers or compact track loaders, mulcher attachments, dump trucks, and chainsaws for most small‑to‑medium lots. Compact track loaders help reduce ground damage on soft sites when mats aren’t an option.

• Mini/compact excavator for digging, stump extraction, and precise root work.
• Skid steer or compact track loader for debris handling, grading, and attachments.
• Forestry mulcher or mulcher head for selective clearing and brush reduction.
• Dump trucks to haul debris and material, plus chainsaws for manual cuts.

Crews for small residential lots often run 2–4 people. Commercial jobs usually need 3 or more, depending on schedule and machine productivity. We size crews to match equipment so operators stay efficient and protection zones stay respected.

Bottom line: plan tree decisions with an arborist, protect retained root zones, choose grinding or extraction based on long‑term use, and match machines and crew to the site to protect both trees and schedule.

Confirm Grading, Drainage, Erosion Control, Testing, and Safety Before Handoff

Want a buildable, inspection-ready site the first time the crew shows up? We focus on grading, temporary and permanent drainage, erosion controls, soil testing, and safety so builders can start without surprises.

Provide temporary drainage during earthwork and lock in permanent controls before foundation excavation when you can. EPA BMP site design guidance recommends designing swales, culverts, and footing drains to move water away from foundations. EPA BMP site design guidance

• Install silt fence with the fabric trenched about 6 inches, posts on the downstream side, and backfill to stop underflow.
• Place straw wattles on contour in a 1–3 inch trench, seat them snugly, stake every 3–4 feet, and overlap sections at least 12 inches.
• Use temporary swales and diversion ditches to route runoff away from active work areas and sensitive waterways.
• Stabilize exposed slopes with seeding, hydroseeding, or erosion control blankets until vegetation establishes.

Testing and compaction before backfill

Complete post‑excavation soil testing before backfill or foundations. Tests should include moisture content, dry density, Atterberg limits, gradation, shear strength, permeability, and Proctor compaction.

Field compaction targets typically run 90 to 95 percent of maximum dry density from the Proctor test. Verify compaction with a nuclear density gauge or sand cone spot checks as work proceeds.

Safety, TESC maintenance, and daily inspections

Follow OSHA excavation rules for protective systems at 5 feet or deeper and keep spoil piles at least 2 feet back. Designate a competent person to inspect excavations daily and after storms or vibrations and to stop work for hazards.

Plan TESC inspections at least weekly and after rainfall events of about 0.5 inches. Repair or upgrade controls promptly and document all inspections and fixes.

Final pre-construction acceptance checklist

Before handing the lot to builders, verify grading tolerances, positive drainage, compaction reports, stump removal, and debris clearance. Confirm finished subgrades within plan tolerances and swales slope at least 1 percent away from foundations.

• Provide compaction test reports showing required percent of Proctor density for all structural fill areas.
• Show grade certification or measurements within ±0.1 foot of subgrade plans and final surface tolerances per project specs.
• Demonstrate positive drainage with flow lines and a minimum swale slope of about 1 percent.
• Confirm all stumps are removed or ground and that debris is hauled away so work areas are free of trip hazards.
• Provide TESC inspection logs and evidence that temporary controls are functional and maintained.
• Deliver a competent person signoff confirming daily inspections and that OSHA excavation protections are in place.

We recommend owner or supervisor walkthroughs with these items and the inspection records in hand. For more on grading and yard drainage solutions, see our guidance on fixing a flooded yard. Fixing a Flooded Yard

Protect site value and keep your schedule

Want fewer surprises and a smoother start to construction? Use this checklist as your working playbook to get the lot build‑ready and inspection‑ready.

• Plan early with surveys, geotechnical testing, and required permits so you don’t delay mobilization.
• Locate and protect all utilities, and test private lines where 811 marks don’t reach.
• Make tree and stump decisions with an arborist so retained trees survive and roots won’t threaten foundations.
• Control erosion and lock in temporary and permanent drainage before foundation work begins.
• Verify compaction and grade tolerances with tests and reports so builders get a stable base.
• Document a clean handoff: confirm stump removal, debris clearance, grade certs, compaction reports, and TESC logs.

Owner‑supervised, professional execution cuts risk, protects site value, and keeps the schedule on track. Treat the checklist as a working document and consult your surveyor, arborist, and geotechnical engineer for site‑specific decisions.