The first weeks on a building site decide how smoothly the rest of the project runs. Site work covers everything between the signed contract and the foundation pour: surveys, permits, clearing, grading, drainage, and utility connections. Skip a step or rush the order of operations and the consequences show up later as water in the crawlspace, settlement cracks, or a $10,000 surprise when the sewer connection turns out to be deeper than expected. The same logic that drives passive house building standards, where performance depends on getting the fundamentals right, applies to site preparation.
Surveying, Permits, and Site Assessment
Site work starts with paperwork, not machinery. A boundary survey confirms the property lines, a topographic survey maps the slopes, and a location survey shows where the house will sit. Most jurisdictions require a plot plan stamped by a surveyor before they issue a building permit, and skipping the survey risks building over the neighbor’s line.
The Three Surveys You May Need
| Survey type | What it shows | When you need it |
|---|---|---|
| Boundary survey | Property corners and lines | Before any clearing or fencing |
| Topographic survey | Elevations and slopes | Before house placement and grading design |
| Location (stakeout) survey | House position on the lot | Before excavation |
A combined boundary and topographic survey typically runs $500 to $1,500 on a standard residential lot. The stakeout adds another few hundred dollars but prevents costly mistakes, like a foundation set 3 feet too far toward the setback.
Soil Testing and Percolation
Soil conditions govern the foundation and the septic system. A geotechnical engineer tests bearing capacity, which usually lands between 2,000 and 3,000 pounds per square foot for residential work, and a percolation test tells you whether a septic drain field will work on the lot. Both tests cost a few hundred dollars and take days, not weeks, so run them early.
Site planning gets complicated when a property holds multiple structures. The arrangement of drives, parking, and accessory buildings on a multi building site plan needs the same survey data as the main house, and getting the layout right on paper avoids re-grading later.
Clearing, Demolition, and Vegetation Management
Clearing removes trees, brush, stumps, and topsoil from the building footprint and the work areas around it. The clearing limits come from the tree protection plan: trees you keep need a fenced root protection zone, and heavy equipment must stay outside it or the soil compaction will kill them within a few years.
What Gets Cleared, What Gets Saved
- The building pad and a 10 to 15 foot buffer around it for equipment and materials.
- The driveway corridor, the utility trench routes, and the septic field area.
- Specimen trees and any vegetation required by the local tree ordinance stay put.
- Topsoil is stripped and stockpiled separately; it is worth $20 to $40 per cubic yard at retail.
Clearing strategy also depends on how the house will be built. Owners who plan to use prefabricated panels or modular sections, a method showcased at trade events like the Guangzhou prefab house fair, often clear a smaller staging area because the components arrive ready to set.
Demolition on a Building Lot
If an old house, garage, or foundation occupies the site, demolition adds a permit, utility disconnects, and disposal fees. Full demolition of a small house runs $10,000 to $25,000 including hauling, and recycling the concrete as fill can cut disposal costs by a third. Test for asbestos before demolition; abatement adds cost but is legally required in most states.
Grading and Drainage
Grading shapes the site so water moves away from the house. The finished grade around the foundation should slope at least 6 inches over the first 10 feet, and swales carry runoff from the roof and the lot to approved discharge points. A laser level or GPS-equipped dozer gets the pad within a few inches of the plan.
Drainage Rules That Prevent Basement Problems
- Slope the finished grade away from the foundation at 5 percent minimum for the first 10 feet.
- Route roof downspouts to daylight, dry wells, or an underground pipe that exits at the property line.
- Install footing drains around the foundation perimeter and connect them to the storm system or daylight.
- Keep the top of the foundation 6 to 12 inches above the highest adjacent grade.
Erosion Control Before the Rain
Construction sites must control sediment before clearing starts. Silt fences, inlet protection, and a stabilized construction entrance are standard best management practices, and many jurisdictions require an erosion control plan with the permit. Fines for sediment leaving the site commonly run into the thousands, and neighbors notice a muddy road quickly.
Grading also changes how the building performs. The depth of the finished grade determines how much of the lower wall sits below ground, and a house that tucks into the site works with nested building envelopes in the same way a berm protects a buried wall from wind and temperature swings.
Building on a Sloping Lot
Slopes force early decisions between cut-and-fill, stepped foundations, and walkout designs. A gentle slope of 3 to 5 percent usually grades out with modest fill. Steeper lots either cut the pad into the hill, which produces fill to move, or step the foundation, which adds wall and waterproofing cost.
Slope, Foundation, and Cost Tradeoffs
| Site slope | Typical approach | Cost impact |
|---|---|---|
| 0 to 3 percent | Flat pad, minimal fill | Baseline |
| 3 to 8 percent | Cut and fill, retaining wall on low side | 5 to 10 percent premium |
| 8 to 15 percent | Walkout basement or stepped foundation | 10 to 20 percent premium |
| Over 15 percent | Structural retaining walls, custom engineering | 20 percent or more |
A walkout basement turns the slope into an asset by adding daylight living space at the lower level. A stepped foundation saves excavation but complicates framing and plumbing, so compare both before the site work starts.
Stabilizing the Cut
Any cut steeper than about 1.5 to 1 (horizontal to vertical) needs engineered retaining, geogrid reinforcement, or a slope-stabilizing plan. Improvised slopes fail in the first wet season, and repairing a failed slope costs many times the engineered solution.
Plans that work with the terrain beat plans that fight it. A sloping lot house plan places the garage at the lower level and the living spaces above, which reduces cut volume and gives the main floor a view.
Utilities, Temporary Services, and Site Access
Utility connections often drive the site work schedule because they depend on the local provider, not the builder. Call for locates before any digging, schedule the permanent connections early, and plan for temporary services in the meantime.
The Order of Utility Connections
- Request locates from the one-call service at least 48 hours before digging.
- Install the sewer or septic connection first; the trench also gives you a depth reference for later runs.
- Run water service and set the meter pit.
- Pull electric service to a temporary pole with a meter so the crew has power for tools.
- Schedule the final electric, gas, and communications connections after the rough-in inspection.
Typical connection costs run $3,000 to $15,000 for sewer, $2,000 to $10,000 for water, and $2,000 to $8,000 for electric service depending on distance from the main lines. A temporary power pole costs $500 to $2,000 and pays for itself in crew productivity.
Site Access and Staging
Concrete trucks, dumpsters, and material deliveries need a stable access route. A gravel construction entrance 12 to 14 feet wide with a turning area keeps trucks out of the mud and protects the finished driveway. Budget for 4 to 6 inches of compacted gravel, and expect to refresh it during wet weather.
A crew that arrives prepared keeps the schedule moving. Building a balanced tool kit for site work on a budget covers the basics, and the same principle applies to the site itself: have the right equipment and materials staged before the graders arrive.
Solar Access and Long-Term Site Planning
The grading and clearing decisions made in week one affect the house for decades. Tree placement determines how much sun reaches the roof for solar panels, and the house orientation sets the solar gain through the windows. A tree that shades the south roof in 20 years can cut a solar array’s output by a quarter.
Planning the pad, the clearings, and the setbacks around the sun path costs nothing at the design stage. Solar access site design documents how the shadows fall across the lot through the year, and reading it before clearing protects both the solar potential and the views.
A Site Work Checklist
- Boundary and topographic surveys complete, permit issued.
- Soil and percolation tests reviewed with the engineer.
- Tree protection zones fenced before equipment arrives.
- Erosion controls installed and inspected.
- Utilities located, temporary power ordered.
- Grade stakes set from the house plan, pad graded and compacted.
- Footing excavation inspected before concrete.
Work through the list in order and the foundation pour starts on a site that is ready for it. Each inspection that passes on the first try keeps the schedule tight and the budget predictable.