Orthomosaic Map
Hundreds or thousands of overlapping images are processed into one geometrically corrected, measurable top-down image of the site.
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Drone & UAV Surveying
FAA Part 107 Pilots · Licensed Utah Surveyors
Drone Surveying in Utah UAV Mapping, Topography & Volumetrics
Survey-grade aerial mapping for construction, land development, mining, stockpile volumes, agriculture, infrastructure and large Utah properties—using UAV photogrammetry, LiDAR where appropriate, survey control and licensed Professional Land Surveyor review.
A drone survey is not simply aerial photography.
A professional UAV survey ties aerial data to surveyed control
and turns thousands of overlapping images or LiDAR measurements
into usable mapping: orthomosaics, terrain models, contours,
point clouds, volumes and CAD-ready site information.
1–3 cm
Typical horizontal target with proper control
Part 107
FAA-certified commercial pilots
2–3 Weeks
Common full-project delivery
Since 1975
Utah surveying and engineering
Direct answer
What Is UAV Aerial Surveying?
UAV aerial surveying uses an uncrewed aircraft equipped with a high-resolution camera, LiDAR sensor or other mapping payload to collect dense spatial information from above. The flight data is combined with surveyed ground control and processed into measurable geospatial products that engineers, surveyors, contractors, developers and property owners can actually use.
01 · The data you actually receive
Drone Survey Deliverables
The flight itself is only the collection phase. The useful product is the processed, georeferenced information delivered in the formats your project team needs.
Digital Terrain Model
A ground-surface model used for grading, drainage, earthwork and civil-engineering analysis.
Digital Surface Model
A surface containing terrain plus visible buildings, vegetation, stockpiles and other above-ground features.
Contour Mapping
Elevation contours generated at the interval required by the project and delivered for engineering or planning use.
Point Clouds
Millions of georeferenced three-dimensional points supplied in LAS, LAZ or another agreed format for advanced design analysis.
Volume Calculations
Measure stockpiles, cut/fill surfaces, excavation quantities and repeat changes between survey dates.
3D Site Models
Textured three-dimensional models for planning, coordination, documentation and stakeholder communication.
Progress Mapping
Fly the same site repeatedly to compare construction, earthwork, stockpiles or site conditions over time.
Survey control makes the difference
Accurate Aerial Mapping Is Anchored to the Ground.
Ground control points and independent checkpoints connect the aerial model to known coordinates and provide a way to test whether the finished map actually fits the real world. RTK and PPK aircraft can reduce the amount of ground control required, but independent survey checks remain valuable whenever accuracy matters.
02 · Use the right tool for each part
Drone Surveying vs. Ground Surveying
This is not an either-or decision. Most professional mapping projects get better results by combining aerial capture with targeted ground surveying.
Drone / UAV
Best for Dense Site-Wide Coverage
Large open sites
Topographic surface collection
Stockpile and earthwork volumes
Construction progress mapping
Quarries, mines and aggregate sites
Solar fields and infrastructure corridors
Hard-to-walk or hazardous terrain
High-resolution site imagery
GNSS / total station
Best for Control & Legal Survey Work
Property corner recovery
Legal boundary monumentation
Ground control and checkpoints
Dense tree canopy
Features hidden by roofs or overhangs
Very high-precision control work
Construction staking
Verification of critical site features
Orthomosaic + Elevation Surface
The same UAV mission can produce both a high-resolution aerial base image and a measurable elevation surface for engineering, mapping and volume analysis.
LiDAR Adds a Different Kind of 3D Data
LiDAR directly measures distances with laser pulses and can be especially useful where terrain complexity or vegetation makes camera-only photogrammetry less effective.
03 · Where UAV mapping earns its keep
Utah Projects That Benefit Most From Drone Surveying
Aerial surveying is most valuable when a project needs dense information across a large, changing or difficult-to-access surface.
Site Topography & Progress Mapping
UAV data provides a dense site record before construction and can be repeated as grading and infrastructure work advances.
- Pre-construction topographic mapping
- Cut/fill and earthwork checks
- Progress documentation
- Existing-condition models
- As-built support
Stockpiles, Pits & Quarry Volumes
Aerial surfaces let operators measure large stockpiles and changing excavation areas without putting field crews throughout an active operation.
- Stockpile volumes
- Inventory measurements
- Pit surface models
- Repeat depletion surveys
- Material movement documentation
Large Acreage Mapping
Large open agricultural properties are well suited to aerial capture when the project needs terrain, drainage or site-wide imagery.
- Field topography
- Irrigation planning
- Drainage analysis
- Acreage documentation
- Multispectral imagery when specifically scoped
Solar, Roads & Linear Corridors
UAV surveying can efficiently capture broad sites and corridors for preliminary planning, design support and construction documentation.
- Solar development sites
- Road and access corridors
- Utility corridors
- Large commercial sites
- Post-construction mapping
Made for big, open Utah sites
Drone Surveying Changes the Economics of Large-Site Data Collection.
On open acreage, a UAV can collect dense imagery over the entire site while the ground crew concentrates on control, checkpoints and features that must be measured directly. That combination is often more efficient than walking every part of a large parcel with ground equipment alone.
04 · Accuracy is designed into the mission
How Accurate Is Drone Surveying?
There is no single accuracy number that applies to every UAV flight. Accuracy depends on aircraft positioning, sensor, flight altitude, ground sampling distance, terrain, control, checkpoints and processing.
| Mapping Need | Typical Ludlow Planning Target | How It Is Controlled |
|---|---|---|
| Survey-controlled UAV mapping | Approximately 1–3 cm horizontal | RTK/PPK positioning, surveyed GCPs and independent verification |
| Vertical UAV mapping | Approximately 3–5 cm on suitable open terrain | Flight geometry, checkpoints, surface quality and ground control |
| Traditional ground survey | Higher precision available where needed | GNSS, total station, levels and direct measurement |
| Visual-only drone imagery | Not treated as survey-grade positional data | Useful for documentation, but not a substitute for surveyed control |
The required accuracy should be defined before the flight. A conceptual site exhibit, earthwork model and high-precision survey control network do not require the same workflow.
Photogrammetry vs. LiDAR
The Sensor Should Match the Site.
Most open-site aerial mapping can be performed efficiently with high-resolution photogrammetry. LiDAR becomes especially valuable when the project needs dense three-dimensional measurement in complex terrain or where vegetation makes bare-earth modeling more difficult.
Photogrammetry:
excellent for open terrain, construction sites, imagery,
orthomosaics, surface models and volumes.
LiDAR:
direct laser measurement with advantages in complex terrain
and selected vegetated environments.
Multispectral:
specialized imagery for agriculture, vegetation and environmental
applications when specifically requested.
Ground survey:
still used for control, checks, legal corners and features
the aircraft cannot reliably observe.
05 · From site boundary to finished files
Our Drone Surveying Process
A professional UAV survey is planned backward from the deliverables and accuracy the client actually needs.
1
Define Scope
Send the property, acreage, required deliverables, project purpose and coordinate or accuracy requirements.
2
Plan the Flight
Review terrain, airspace, weather, flight altitude, overlap, control layout and site-access conditions.
3
Set Control & Fly
Survey control and checkpoints are established as required, then the UAV captures the planned aerial mission.
4
Process & Check
Imagery or LiDAR data is processed, georeferenced, classified and checked against independent field information.
5
PLS Review & Delivery
Survey deliverables are reviewed in-house and supplied in the agreed CAD, GIS, PDF, imagery or point-cloud formats.
Ground Control Connects the Flight to the Survey.
Precisely measured targets provide known positions that help anchor aerial mapping to the project's coordinate system and support independent accuracy checks.
Professional UAV Work Starts With the Pilot.
Commercial drone operations require flight planning, site awareness and FAA compliance in addition to the surveying and mapping workflow.
06 · Know when not to use the drone alone
Where UAV Surveying Has Limitations
Drone mapping is powerful because it collects dense site-wide data quickly. It is not the correct standalone solution for every survey problem.
Dense Tree Canopy
Camera-based photogrammetry sees the top of vegetation rather than hidden ground. LiDAR or conventional field surveying may be needed for reliable bare-earth information.
Property Corners
An aerial model does not replace monument recovery, boundary analysis or physical corner monumentation by a licensed surveyor.
Under Roofs & Overhangs
A drone cannot measure features it cannot see. Ground crews must collect hidden or obstructed information when the project requires it.
Flight Restrictions
Controlled airspace, airports, temporary flight restrictions and other FAA requirements can affect when and how a mission is flown.
Wind, Rain & Snow
Poor weather can reduce flight safety, imagery quality or the ability to reconstruct a reliable surface.
Reflective or Moving Surfaces
Photogrammetry can struggle on water and other uniform or reflective surfaces because the images lack reliable matching detail.
07 · Current Utah planning ranges
Drone Surveying Cost in Utah
Site size is only one part of the price. Accuracy, control, terrain, airspace, LiDAR versus photogrammetry, travel and the deliverables required can materially change the scope.
| Project | Typical Scope | Planning Range |
|---|---|---|
| Small site topo | Under approximately 10 acres; orthomosaic, contours and terrain model | $1,500–$3,500 |
| Mid-size site topo | Approximately 10–50 acres; orthomosaic, DTM/DSM and contours | $3,000–$7,500 |
| Large open site | Approximately 50–500 acres; topographic package and dense point cloud | $5,000–$20,000+ |
| Stockpile volume survey | Single inventory or material-volume measurement | $1,200–$3,500 |
| Recurring progress flights | Weekly, monthly or milestone-based repeat mapping | Quote based |
| 3D model / visualization | Textured site model and agreed visualization products | $1,500–$5,000 |
These are planning ranges from Ludlow's current UAV service information. Every project receives a defined scope and fixed-fee proposal before fieldwork.
08 · Statewide mobilization
Drone Surveying Across Utah
Ludlow Engineering is based in Nephi and mobilizes UAV crews throughout Utah. Large-site projects frequently justify travel because aerial data collection is especially efficient once the crew and equipment are on site.
Core service territory includes central Utah and Utah County, with regular work along the Wasatch Front, in eastern Utah, southern Utah and rural counties.
Nephi / Juab County
Utah County
Provo
Lehi
Sanpete County
Sevier County
Millard County
Salt Lake County
Wasatch County
Carbon County
Iron County
Washington County
09 · UAV survey resource hub
Where Drone Surveying Fits in Your Project
This page owns the broad drone-surveying and UAV-mapping intent. Use the permanent pages below when the project requires a more specific survey or engineering deliverable.
Parent survey hub
Land Survey Services
Compare boundary, topographic, ALTA, UAV and construction survey services.
Design surveyTopographic Surveys
Elevation, contour and existing-condition mapping for engineering, architecture and site planning.
Commercial transactionsDrone-Assisted ALTA Surveys
See how UAV mapping can support selected commercial ALTA/NSPS survey workflows while the PLS remains responsible for the survey.
ConstructionConstruction Staking
Translate approved engineered plans back onto the ground after survey and design are complete.
DevelopmentSite Planning & Design
Use survey data for grading, drainage, utilities, access, parking and municipal site approval.
EngineeringCivil Engineering
Take the aerial and ground survey base into subdivision, infrastructure and land-development design.
Legal property linesBoundary Surveys
Use ground-based licensed surveying when the question is the legal location of property corners and lines.
Title & lendingALTA / NSPS Surveys
Commercial land-title surveys for lenders, buyers, title companies and attorneys.
BudgetSurvey Cost Guide
Compare pricing factors across topographic, boundary, ALTA and other survey types.
10 · Direct answers
Drone Surveying FAQ
Common questions from Utah developers, contractors, property owners and project managers considering UAV mapping.
How accurate is drone surveying?
With an appropriate RTK or PPK workflow, surveyed ground control and independent checks, Ludlow commonly plans around approximately 1–3 cm horizontal and 3–5 cm vertical accuracy for suitable aerial-mapping conditions. The required accuracy is defined for each project before the flight.
How much does a drone survey cost in Utah?
Small site topographic UAV projects commonly plan around $1,500–$3,500. Mid-size projects may run $3,000–$7,500, while large sites, LiDAR work and recurring flights are quoted based on acreage and deliverables.
Can a drone replace a land surveyor?
No. A drone is a measurement and data-collection platform. Legal boundary work still requires appropriate records research, ground evidence, monument work and professional responsibility from a licensed land surveyor.
Can a drone survey property boundaries?
Aerial imagery can help document a site, but it does not independently establish a legal boundary. Boundary corners and lines require the appropriate ground survey and professional analysis.
What files do I receive?
Depending on scope, deliverables can include GeoTIFF orthomosaics, DWG or DXF contours, terrain and surface models, LAS/LAZ point clouds, PDFs, volume reports and textured 3D models.
Can drone surveying calculate stockpile volumes?
Yes. UAV surface models are well suited to stockpile, excavation and earthwork volume calculations, particularly on large or active sites where dense coverage is useful.
Can drones map through trees?
Standard photogrammetry cannot see the bare ground beneath dense tree canopy. LiDAR may capture ground returns through gaps in vegetation, while dense conditions can still require conventional ground surveying.
How long does a drone survey take?
Many sites can be captured in a single field day. Processing, quality control, drafting and professional review usually drive the overall schedule, with many Ludlow UAV projects delivered within approximately two to three weeks.
Are Ludlow's drone pilots FAA certified?
Yes. Ludlow's commercial UAV operations are flown by FAA Part 107-certified pilots, with survey deliverables reviewed through the firm's professional surveying workflow.
Can UAV data be used for an ALTA survey?
UAV mapping can be one component of an ALTA/NSPS survey when appropriate for the property. Ground verification, boundary evidence, title research and the applicable ALTA/NSPS requirements still remain under the responsible Professional Land Surveyor.
FAA Part 107 · Survey control · Licensed PLS review
Tell Us What You Need to Measure.
Send Ludlow Engineering the property or project location, approximate acreage, required deliverables, accuracy needs and project deadline. We will determine whether photogrammetry, LiDAR, ground surveying—or a combination—is the right workflow and provide a fixed-fee scope.
What Is a UAV (Unmanned Aerial Vehicle) and Its Role in Surveying?
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