How Early Can You Really Evaluate Earthwork During Land Due Diligence?

One of the biggest misconceptions about early earthwork evaluation is that you need a complete civil plan set before you can learn anything meaningful.

You don't.

But you do need enough information to establish two things: where the ground is today and some reasonable basis for where the proposed site needs to go.

Start With Existing Ground

Every earthwork evaluation needs a usable existing-ground surface.

That might come from an existing topographic survey, appropriate GIS/elevation data, or LiDAR.

The important distinction is that a developer doesn't necessarily need to commission a brand-new topographic survey just to begin asking questions about the dirt.

How Much Proposed Design Is Really Needed?

This is where early-stage analysis gets interesting.

A full grading plan isn't always necessary.

Depending on the project, basic vertical controls such as roadway centerline grades, pond top-of-bank elevations, and several key design elevations can provide enough information to begin developing a conceptual proposed surface.

From there, reasonable development assumptions can be used to begin evaluating:

• Potential cut and fill

• Site balance

• Import or export exposure

• Areas of significant grade change

• Assumptions that could materially affect the earthwork budget

  
  

The result shouldn't be presented as final engineering.

That's not the purpose.

The purpose is to reduce the unknown while there is still time to do something about it.

Earlier Doesn't Have to Mean More Expensive

Land teams often face a difficult tradeoff during feasibility or inspection periods.

They want better information before making an acquisition decision, but they don't necessarily want to spend heavily on engineering for a deal they may never close.

There is a lot of room between knowing almost nothing about the

dirt and having a completed civil design.

That's where early earthwork evaluation can provide value.

The goal isn't perfect information. It's useful information before the decision.