Good for
Comparing parcels, finding terrain trouble, testing conceptual pad positions, identifying questions for a site visit, and deciding whether newer data is worth acquiring.
Read this before relying on a number
Useful early answers.
Honest limits.
Lidar Site Studies is designed to help decide where to spend diligence money. These demonstrations use public data and conceptual assumptions; they do not replace a survey, field delineation, engineering design, geotechnical investigation, or contractor bid.
The short version
What the work can—and cannot—say
Not proof of
Property boundaries, legal access, wetland limits, zoning compliance, soil or bedrock conditions, drainage performance, permit eligibility, or final construction quantities.
How to use it
Treat a favorable result as permission to investigate—not permission to build. Treat a poor result as a reason to question the concept, not a final rejection of the land.
Workflow
From parcel question to decision screen
- Define the decision — confirm the parcel or search area, target use, approximate pad size, timing, and the financial question the screen needs to inform.
- Check source fitness — review acquisition dates, coverage, published metadata, coordinate systems, resolution, and whether the available data is current enough for the decision.
- Build terrain surfaces — classify or use published lidar ground points for a bare-earth model; use first returns or surface products for canopy and structures. Generate hillshade, slope, flow, roughness, and canopy derivatives as needed.
- Apply stated screens — combine terrain with mapped wetlands, hydrography, parcel information, and explicit buffers. These mapped constraints are flags for diligence, not field-confirmed jurisdictional limits.
- Test concepts — search candidate pad positions and use cell-by-cell cut/fill math against a conceptual level grade. The result compares concepts; it is not a grading plan.
- Check the processing — compare outputs with published derivatives and, where practical, reproduce key calculations in a second GIS workflow. Agreement between products from the same flight checks processing consistency, not absolute field accuracy.
- Hand off the questions — identify what needs a site visit, survey control, wetland scientist, civil engineer, geotechnical team, title professional, permitting specialist, or contractor.
Reading the numbers
Three distinctions that matter
Quantity
Cut and fill are raster-based planning quantities for a simplified pad. They exclude topsoil handling, shrink/swell, unsuitable material, foundations, utilities, drainage, access grading, and design revisions unless expressly stated.
Unit cost
The demonstrations use $20 per cubic yard as an illustrative comparison basis, plus a $10–$40 sensitivity range in some cases. It is not presented as a current market quote. A contractor or estimator must refresh it for a real project.
Data sensitivity
The ±10 cm tests show how a uniform elevation shift changes modeled volume. That is not a construction contingency and does not cover the many design, subsurface, market, or execution risks outside the elevation model.
Unless a signed scope says otherwise, all case-study amounts exclude professional services, survey/control, geotechnical investigation, rock, unsuitable soil, dewatering, haul/disposal, erosion control, utilities, pavement, structures, retaining walls, permits, mitigation, mobilization, escalation, overhead, and profit.
Sources & currency
Where the demonstrations came from
Source pages were checked on August 18, 2026. A paid project would record the exact files, download dates, metadata, versions, and area of use in its delivery memo.
- Elevation and point clouds. USGS 3D Elevation Program and MassGIS lidar terrain data. The detailed cases use the spring 2021 Central-Eastern Massachusetts acquisition, described by MassGIS as Quality Level 1 with 0.5 m DEM products. The corridor page also displays MassGIS 2021 bare-earth shaded-relief tiles of that same surface. USGS 3DEP · MassGIS lidar terrain data
- Parcel and assessor information. MassGIS Level 3 property tax parcels and linked assessor extracts. These are administrative mapping records and should not be treated as surveyed ownership boundaries or title evidence. MassGIS property tax parcels
- Wetland and water screens. MassDEP Wetlands (2005) and MassDEP Hydrography (1:25,000), distributed by MassGIS. MassDEP explicitly describes the wetland layer as planning-only and not a Wetlands Protection Act delineation. MassDEP wetlands data · MassDEP hydrography
- Road context. MassDOT highway centerline information distributed through the Commonwealth's GIS catalog. Exact layer vintage must be recorded when a corridor screen is refreshed. MassGIS data catalog
- Imagery context. Selected figures use Esri World Imagery. Credits vary by location and scale; the service includes Esri and imagery contributors identified in the live item. Images here are context only and are not the measurement source for modeled terrain. Esri World Imagery item and credits
Acquisition choices
Photography and lidar are complementary
Photography is excellent for current visual conditions, documentation, inspection, and photogrammetric surface models where the ground is visible. In dense vegetation, that surface often follows the canopy because the camera cannot reconstruct what it cannot see. Lidar can record some returns through canopy openings and support a classified bare-ground model. Results still depend on point density, leaf conditions, terrain, water, sensor, control, calibration, and processing.
A fresh drone mission would be planned and flown by an FAA Part 107 remote pilot under applicable airspace and operating rules, with land access and permissions addressed. FAA Part 107 overview · FAA airspace authorizations
Professional boundaries
Bring in the right license at the right time
Lidar Site Studies is currently a service concept and portfolio demonstration by Max Howe. The studies are built from public data; they have not been field-surveyed or certified.
Work involving regulated land surveying or professional engineering would be scoped and delivered through appropriately licensed professionals. Massachusetts publishes the governing statutes, regulations, and board guidance; those sources—not this page—control. Massachusetts statutes and regulations · Registration board