Drone As-Built Surveys for Commercial Properties

Drones are genuinely useful for commercial as-built documentation - but only for the right scope. If your provider is pitching a full building as-built via drone alone, you’re either getting exterior-only coverage or you’re about to be disappointed. Here’s exactly what drone capture delivers, where terrestrial laser scanning still owns the job, and how we combine both into a single registered deliverable.

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Why Drones Have Become a Legitimate As-Built Tool - and Why They Are Not a Silver Bullet

Drones are fast, cost-effective, and genuinely capable for exterior envelope documentation - rooftops, facades, large sites, and anything that would otherwise require scaffolding, lifts, or rope access. For that scope, they’ve displaced traditional methods on most projects. But a drone cannot fly through a drop ceiling to trace MEP routing, and it can’t hold the sub-5 mm accuracy that curtain wall fabrication or prefab module fit-check tolerances require.

Two capture methods drive the drone as-built market:

Photogrammetry uses overlapping RGB imagery processed in Agisoft Metashape or Autodesk ReCap Photo to reconstruct a dense point cloud and orthomosaic. Accuracy is GSD-dependent - expect 10-30 mm under real-world conditions with proper GCPs. It’s the lower-cost entry point and works well for site planning, rooftop equipment layouts, and facade condition documentation where half-inch accuracy is acceptable.

Drone-mounted LiDAR - platforms like the DJI Zenmuse L2 or RIEGL miniVUX - fires millions of laser pulses per second and returns a dense point cloud with far less dependence on lighting or surface texture. Per manufacturer specifications, the DJI Zenmuse L2 system accuracy is 4-5 cm (40-50 mm) at 150 m under controlled conditions, and the RIEGL miniVUX-1UAV is rated at 15 mm accuracy / 10 mm precision. Drone LiDAR costs more per mobilization but is the right call when facade repair tolerances or solar layout accuracy demands it - and the RIEGL platform in particular delivers a meaningful accuracy advantage over photogrammetry for those applications.

Neither method touches what a terrestrial laser scanner delivers from the interior: dense point capture behind obstructions and the ability to document every inch of a floor plate that a drone physically cannot access. When commercial PMs or GCs get sold on “drone as-builts,” they’re often buying exterior coverage only - which is fine if that’s the actual scope, and a serious gap if it isn’t. Define your scope before you define your method.

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The Drone As-Built Workflow: From Flight Plan to Registered Point Cloud

Step 1: Pre-flight site assessment. Our crew pulls the FAA sectional chart, runs the LAANC authorization check for controlled airspace, and walks the site perimeter for hazards - overhead powerlines, HVAC discharge zones, rooftop obstructions. For commercial zones near Class B or C airspace, we build in 1-3 days of authorization lead time. Wind exceeding 15-20 mph or any active precipitation grounds the operation; we confirm a weather window the evening before mobilization and have a hard no-fly threshold of 15 mph sustained for photogrammetry (LiDAR platforms tolerate slightly higher but we don’t push it on precision work).

Step 2: Ground Control Point (GCP) layout. We place GCPs using 18-inch checkerboard targets spaced to cover the full capture footprint. Every GCP is occupied with a Trimble R12i RTK GPS for sub-centimeter horizontal tie-in. More complex or larger sites get 8-12 GCPs. This step is what separates high-accuracy deliverables from hobbyist captures - skip GCPs and you’re drifting 5-10 cm across a large site.

Step 3: Flight planning. Facade documentation uses a double-grid oblique pattern, with the drone hovering at multiple distances and angles to eliminate occlusion on recessed windows and reveals. Rooftop capture uses nadir (straight-down) passes with 75-80% sidelap and 80-85% frontlap - the overlap targets for reliable sub-cm point cloud reconstruction. For a 200,000 sq ft building, this translates to roughly 800-1,200 image captures depending on altitude and GSD target.

Step 4: Processing. Photogrammetry jobs run through Agisoft Metashape - align photos, build dense cloud, generate mesh and orthomosaic. Drone LiDAR ingests directly into ReCap for point cloud registration and georeferencing.

Step 5: QA/QC. We run noise filtering, generate a color-coded deviation map against check points, and produce a formal accuracy report showing GCP residuals and check point RMSE. If any check point is outside spec, we reprocess before delivery.

Step 6: Deliverable packaging. Standard output includes .RCP/.RCS (ReCap/Revit-ready), .LAS/.LAZ (raw point cloud), georeferenced GeoTIFF orthomosaic, DSM/DTM, and AutoCAD DWG linework for roof plan and site plan.

Timeline: Field capture runs 1 day for buildings up to 200,000 sq ft exterior/rooftop. Photogrammetry processing is 2-4 days; LiDAR processing is 1-2 days. Full deliverable set ships 5-10 business days from field capture. Wind over 15-20 mph sustained or active precipitation grounds the operation - build a 2-day weather buffer into any project schedule in markets with variable conditions.

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Where Drones Excel on Commercial Properties: The Right Use Cases

Rooftop as-builts are the single strongest drone use case in commercial real estate. HVAC equipment layout, drain locations, parapet heights, pipe penetrations, rooftop curb dimensions - all of this is dangerous and expensive to document by traditional means. A crew with a lift or rope access takes 2-3 days and carries significant safety exposure. A drone resolves the same scope in hours.

Facade documentation - curtain wall panel mapping, window and door rough openings, exterior cladding condition, spandrel panel alignment - supports glazing replacement, envelope repair scopes, and warranty claims. The orthomosaic at 1-2 cm/pixel gives glazing contractors panel-by-panel dimensions from a desk.

Large footprint sites are where drone economics become undeniable. Distribution warehouses, industrial campuses, university master planning parcels - 50+ acres captured in a single day, georeferenced to NAD83 / State Plane, ready to import directly into Civil 3D or ArcGIS. Traditional total station survey of the same site would take a week.

Construction progress monitoring: comparing the drone point cloud at each phase to the design BIM quantifies earthwork volumes at ±1-2% accuracy, verifies grading, and catches deviations before they compound. Monthly drone surveys on active grading projects can identify earthwork shortfalls against grading plans - the kind of deviation that a CloudCompare volume-difference map surfaces before the next lift is placed, giving the GC time to correct rather than back-charge at closeout.

Other strong drone applications: parking structure top decks for ADA slope compliance and stall layout documentation; elevation certificate support for flood zone datum verification; and post-event insurance documentation (hail, wind, fire damage) where timestamped, georeferenced imagery provides objective existing-conditions documentation.

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Where Drones Cannot Replace Terrestrial Laser Scanning

There are hard limits:

Interior spaces are off the table for drones in occupied commercial buildings - legally and practically. Every floor plan, MEP rough-in location, structural framing dimension, and ceiling height requires terrestrial laser scanning. Our Trimble X7 on a tripod inside a mechanical room captures what no drone ever will.

Tolerances tighter than 15 mm - curtain wall anchor fabrication, prefab module fit-check, structural steel connection verification - require terrestrial laser scanning. The Trimble X7 is rated at 3.5 mm at 20 m and 4 mm at 10 m (3D point accuracy) per manufacturer specifications. Drone photogrammetry at 10-30 mm is not an acceptable substitute. Drone LiDAR with the RIEGL miniVUX at 15 mm accuracy approaches TLS territory for some envelope applications, but requires careful GCP validation to confirm actual check-point RMSE before being used for fabrication-tolerance work.

Obstructed geometry is where photogrammetry fails in ways that aren’t obvious until the point cloud comes back with holes. On buildings with deep cantilevered canopy systems, oblique drone passes often cannot achieve the required camera angles when adjacent structures block the flight path - the result is a continuous void in the point cloud covering soffit and fascia zones that glazing contractors need for bid takeoff. The solution is returning with the terrestrial scanner at grade-level positions, registered to the drone control network, to fill the gap. The lesson: any soffit, loading dock canopy, covered walkway, recessed reveal deeper than 2 ft, or underside of an elevated slab needs to be flagged during scoping as a TLS-required zone.

LOD 300 scan-to-BIM for MEP routing in Revit cannot be built from drone data alone. Populating duct runs, pipe systems, and equipment at LOD 300 requires TLS point clouds at 6 mm point spacing or better. Drone data contributes the building shell; TLS builds everything inside.

The right answer for most commercial as-built projects is a hybrid: drone for the exterior envelope, TLS for the interior, unified into one registered point cloud in a single coordinate system.

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Drone + TLS Hybrid Workflow: How We Combine Both into One Deliverable

The hybrid workflow is where most serious commercial as-built projects land, and the execution detail is what separates a real deliverable from a patchwork of disconnected files.

Control network first. Before either drone or TLS capture begins, we establish a unified site control network. TLS scan positions are tied to control using Trimble target spheres or high-contrast checkerboard targets occupying the same GCP monuments used for drone GCP layout - all in NAD83 / State Plane with NAVD88 vertical. This is the step that makes a unified deliverable possible. If you establish drone GCPs and TLS control independently, you’ll spend days reconciling coordinate offsets later.

TLS registration. Interior scans from the Trimble X7 are registered in Trimble Business Center. We target registration residuals under 3 mm across the scan network. A 50,000 sq ft floor plate typically requires 40-60 scan positions at one position per 400-600 sq ft, adjusted for sight-line obstructions.

Point cloud merge. The registered drone photogrammetry or LiDAR point cloud imports into the same project coordinate system - we merge in ReCap Pro or CloudCompare, aligning to the shared control. The result is a single unified .RCP file with color-coded scan sources: interior TLS in one color class, exterior drone capture in another. The client navigates one file.

Downstream delivery. The unified point cloud hands off directly to Revit modeling for as-built drawings for tenant improvement projects at LOD 200 through LOD 350, or to civil and structural engineers as a georeferenced DWG base map. Interior TLS carries accuracy per the Trimble X7 manufacturer specification; the exterior drone shell carries accuracy per the platform used - both are documented in the accuracy report so downstream users know exactly what they’re working with.

For tenant improvement and renovation projects, this means the architect gets reliable floor-to-ceiling heights and column grid dimensions from TLS, reliable rooftop equipment layout and parapet heights from drone - all in one file, one coordinate system, one accuracy report.

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Deliverables: What a Commercial Drone As-Built Package Actually Contains

Our standard commercial drone as-built package includes:

• Point Cloud: .LAS/.LAZ (raw), .RCP/.RCS (ReCap/Revit-ready), .E57 - datum and projection specified (typically NAD83 / State Plane, NAVD88 vertical). See our laser scanning file deliverables explained guide for format details.
• Orthomosaic: georeferenced GeoTIFF at 1-2 cm/pixel ground resolution - import directly into AutoCAD, Civil 3D, or ArcGIS with no additional processing.
• Digital Surface Model (DSM) and Digital Terrain Model (DTM): 5 cm grid, ready for drainage analysis, earthwork quantities, and grading verification.
• 2D CAD as-built drawings: roof plan with equipment tags and dimensions, site plan with setbacks and hardscape - delivered as AutoCAD DWG.
• Revit mass model: LOD 200 existing-conditions shell for commercial renovation - optional, scoped separately for LOD 300/350 interior buildout.
• Accuracy report: GCP residuals table, check point RMSE, methodology statement - required for permit submissions and insurance claims documentation.
• Optional add-ons: 360 drone video tour, annotated PDF condition report with callouts, clash report comparing captured conditions to original construction documents.

File delivery via secure link with organized folder structure. For complete what as-built drawings actually include coverage, see that resource for naming conventions and layer standards.

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Pricing: What Drone As-Built Surveys Cost for Commercial Properties

Key cost drivers:

• Building height and access complexity - tall facades need more flight passes; FAA authorization near airports adds lead time and sometimes cost
• Number of TLS scan positions - a 100,000 sq ft interior with complex MEP may require 150-200 scan positions; a simple open warehouse floor needs 40
• GCP density - high-accuracy specs require tighter GCP spacing and RTK GPS occupation time
• Deliverable type - point cloud-only delivery is the low end; full LOD 350 Revit model with annotated drawings is the high end
• Restricted airspace - Class B near major airports, heliports, and TFR-prone areas can require additional FAA coordination

For comparison: a conventional total station as-built for a 50,000 sq ft commercial building typically runs $8,000-$15,000, delivers sparse spot elevations and manual field notes, and produces no 3D deliverable. Drone + TLS hybrid at the same scale often lands at $6,000-$9,000 with a full point cloud, orthomosaic, and Revit-ready output.

For a deeper breakdown, see how much as-built drawings cost.

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Regulatory Considerations: FAA Part 107, Airspace, and Insurance

Every commercial drone operation - including as-built surveys - requires an FAA Part 107 remote pilot certificate. Confirm your provider holds one before signing a contract.

Controlled airspace. Class B (major airports), Class C, Class D, and surface Class E all require LAANC authorization. LAANC provides near real-time automated approvals - typically seconds to minutes - for flights at or below pre-approved UAS Facility Map grid ceilings. For flights exceeding those ceilings or requiring manual review, lead time extends to 3-7 business days. In dense metro areas the complexity varies by city:

New York City is the most regulated commercial drone market in the country. NYC commercial drone permitting is governed by 38 RCNY Chapter 24 (effective July 21, 2023), which requires operators to apply to the NYPD at least 30 days in advance, provide proof of Part 107 certification, a detailed flight plan, and a minimum of $1 million liability insurance per the NYC rule. Build at least five weeks from contract execution before first flight in the five boroughs to account for application processing.

Chicago commercial UAS operations within the Class B airspace corridors serving O’Hare and Midway require a separate city-level approval from the Chicago Department of Aviation (CDA), independent of FAA LAANC. The CDA application requires the operator’s Part 107 certificate, liability COI naming the City of Chicago as additional insured, a site map with proposed flight path, and a safety plan. Processing typically runs 5-7 business days. Operations outside the CDA corridors but inside Class B still require LAANC - the CDA layer is additive, not substitutive.

TFRs. We check NOTAMs by 6:00 AM the morning of every flight. Stadium events, VIP movements, and active wildfire TFRs can ground commercial operations with zero notice and no compensation for mobilized crew. When a TFR grounds a drone mobilization on an urban project, sequencing the TLS interior scope first keeps the crew productive and avoids a full crew idle day - then rescheduling drone capture once the TFR lifts. Build schedule float of at least two days per drone mobilization on any urban project within 30 miles of a major metro.

Insurance. Our operations carry $2M per-occurrence / $5M aggregate hull and liability coverage - the minimum floor most institutional property owners and REITs require in their vendor COI language. A $1M policy will not satisfy the additional-insured requirements on most large commercial assets; Class A office buildings and institutional campuses routinely spec $2M/$5M in their standard vendor agreements. We provide a certificate of insurance naming the property owner as additional insured and the specific property address in the description of operations field - that level of specificity is what risk managers actually require. If your provider carries only $1M and can’t upgrade, that’s a vendor procurement problem to resolve before scheduling field crew.

Privacy. We notify building tenants in advance, restrict imagery to the subject property, and redact neighboring property interiors from deliverables when requested.

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How to Scope and Specify a Drone As-Built Survey: Checklist for Owners and PMs

1. Define the capture zone precisely. Exterior envelope only? Rooftop only? Hybrid with interior TLS? This single decision drives 80% of the cost estimate. A rooftop-only engagement on a 100,000 sq ft building is a $2,000-$3,500 scope. Adding facade photogrammetry doubles it. Adding interior TLS for all occupied floors moves the number to $12,000-$18,000. Get the zone defined before you ask for a number.

2. Specify required accuracy and LOA/LOD tier. 10-30 mm (photogrammetry) is appropriate for site planning, rooftop equipment layout, and facade condition documentation. Drone LiDAR for facade repair scopes and glazing replacement bid packages - with accuracy governed by the platform spec (RIEGL miniVUX at 15 mm, DJI Zenmuse L2 at 40-50 mm system accuracy). Under 15 mm for fabrication-level work requires TLS, with your accuracy report confirming actual check point RMSE against the Trimble X7 manufacturer specification. For BIM deliverables, specify LOD 200, 300, or 350 explicitly; each tier requires different point cloud density, field time, and modeling labor. Leaving LOD unspecified means the contractor defaults to the lowest defensible tier.

3. State your coordinate system and datum upfront - in writing. NAD83 horizontal, NAVD88 vertical, State Plane zone from your civil engineer or surveyor of record. This is not a detail to leave to the contractor to assume. Mismatched datums - a contractor delivering in a local assumed coordinate system while your civil engineer’s base file is in State Plane - have caused civil engineers to reject deliverables and demand complete re-survey. This can add significant re-mobilization cost and schedule impact on projects where the datum requirement was not specified at contract. The fix costs nothing upfront; the re-survey costs a schedule hit and full remobilization.

4. Define deliverable format by downstream user. Revit modeling needs .RCP. Civil engineers need .LAS + DWG. Owners may want a georeferenced PDF. Nail this before scope is finalized - changing formats post-processing is expensive. Converting a processed Metashape photogrammetry project to a LiDAR-compatible .E57 after the fact requires reprocessing from source imagery, not a simple file conversion.

5. Confirm FAA and local municipal authorization is in scope and in the fee. It should not be a line-item add-on surprise. Ask explicitly: does the quote include LAANC, any required city-level UAS permit (CDA in Chicago, NYPD in NYC), and airspace lead time in the project schedule? If the answer is a blank stare, budget separately and add significant lead time to your mobilization timeline - particularly in NYC where 30 days minimum advance notice is required.

6. Ask for a sample accuracy report from a comparable past project. Any provider doing precision work should have a redacted report ready to share - GCP residuals table, check point RMSE, methodology statement, equipment serial numbers. If they can’t produce one within 24 hours of being asked, their QA/QC process isn’t documented.

7. Build weather and airspace float into your schedule - two days minimum, three days in urban markets. Wind over 15-20 mph sustained or active precipitation grounds the operation. TFRs in metro areas can appear 12-24 hours before a scheduled flight. One day of weather float is optimistic; two days is realistic; three days in downtown NYC or Chicago is prudent. For hybrid projects, sequence TLS interior work first so a weather delay on the drone doesn’t idle the entire crew.

For the TLS component of hybrid projects, our site prep checklist for laser scanning covers access coordination, MEP lockout requirements, and elevator scheduling.

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Real-World Applications: Industries and Project Types That Drive the Most Value

Retail portfolio owners running chain rollouts use drone as-builts to standardize exterior documentation across multiple locations in a single season. Portfolio work of this type is structured around standardized deliverable packages per location - georeferenced point cloud, orthomosaic GeoTIFF, DWG roof plan with equipment tags, and a formal accuracy report - all organized in a centralized project folder by site ID with consistent naming conventions. That uniformity is what makes the data usable at the portfolio level: a facilities manager can pull any location’s rooftop file and compare HVAC equipment layouts across the entire chain in a single session, because every file was produced to the same spec.

Industrial and logistics operators are heavy users of rooftop and site documentation services. Rooftop solar feasibility studies, HVAC replacement planning, dock door counts, trailer court paving condition - drone delivers in a day what scaffold surveys take a week. On rooftop-only engagements, the elimination of scaffold and boom lift access costs alone often justifies the drone scope before the data value is even considered.

Office building repositioning and adaptive reuse - office-to-residential conversion projects are active across most major US markets. Drone captures the exterior shell and rooftop; TLS captures each interior floor; the combined Revit model supports the architect’s conversion design with reliable existing-conditions documentation. Our professional as-built documentation services cover the full hybrid scope for these projects.

Insurance and loss adjustment post-hail, wind, or fire: timestamped, georeferenced drone imagery and point cloud data provides objective existing-conditions documentation for claims. Adjusters and owners both benefit from a single objective record captured within days of an event. The accuracy report - with GCP residuals, equipment serial numbers, and capture timestamp - supports the client’s own claims professionals in working through a contested claim.

Parking structure inspections: drone covers the top deck for slope mapping, spall identification, and expansion joint condition; TLS handles below-grade levels. Combined deliverable supports the structural engineer’s assessment report.

Construction defect documentation is one of the highest-stakes applications in this work. A drone point cloud alone rarely carries the accuracy needed for defect documentation - but a hybrid TLS + drone package registered to a common control network does. TLS of facades can document systematic offsets between as-installed anchor clip locations and structural drawing coordinate positions, with deviation maps produced in CloudCompare against the design BIM exported from Revit showing whether offsets are consistent across multiple bays - the kind of spatial analysis that distinguishes systemic installation failure from isolated workmanship errors. Drone data contributes the georeferenced facade orthomosaic for visual documentation; the dimensional case is built on TLS. The resulting point clouds and deviation maps provide the client’s own design, legal, and licensed professionals with accurate, timestamped existing-conditions documentation they can work with.

For large parcel work, see how laser scanning supports land surveying projects for detail on how drone DSM integrates with traditional boundary and topographic survey. For the full method comparison, TLS vs LiDAR vs photogrammetry: choosing the right method goes deeper on decision criteria.

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FAQ

How accurate is a drone as-built survey for a commercial building?

It depends on the capture method. Photogrammetry with proper GCPs delivers 10-30 mm accuracy under typical field conditions - acceptable for site planning, rooftop equipment layout, and facade condition documentation. Drone LiDAR accuracy is platform-dependent: the RIEGL miniVUX-1UAV is rated at 15 mm accuracy / 10 mm precision per manufacturer specification, while the DJI Zenmuse L2 system accuracy is 4-5 cm (40-50 mm) at 150 m. Terrestrial laser scanning with the Trimble X7 delivers approximately 3.5-4 mm 3D point accuracy per manufacturer specification. The rule: let the accuracy spec drive the method choice, not the budget. If your tolerance is tighter than 15 mm - curtain wall anchor fabrication, prefab fit-check, any structural connection verification - TLS is required regardless of cost.

Can a drone replace a traditional as-built survey for a commercial property?

For exterior and rooftop scope, yes - drone methods are faster, cheaper, and produce superior 3D deliverables compared to total station spot surveys. For interior as-builts - floor plans, MEP routing, ceiling heights, column grid dimensions - drone data does not substitute for terrestrial laser scanning. Most commercial projects need both: drone for the envelope, TLS for the interior, merged into a single registered point cloud. That hybrid workflow is our standard approach on any project where the building interior matters to the deliverable.

What does a drone as-built survey cost for a commercial building?

Rooftop-only drone as-built: $800-$2,500. Small commercial exterior under 20,000 sq ft: $1,500-$3,500. Mid-size office or retail hybrid (drone exterior + TLS interior) at 20,000-100,000 sq ft: $4,500-$10,000. Large commercial or industrial at 100,000-500,000 sq ft: $10,000-$25,000+. The four biggest cost drivers: building size, interior TLS scope (number of scan positions), deliverable type (point cloud only vs. full LOD 350 Revit model), and airspace authorization complexity. Restricted airspace near major airports and historic structures with tight accuracy specs push cost toward the high end of each band.

What deliverables do I get from a drone as-built survey?

Standard package includes a georeferenced point cloud (.LAS/.LAZ and .RCP), orthomosaic GeoTIFF at 1-2 cm/pixel, DSM/DTM at 5 cm grid, 2D CAD roof plan and site plan (AutoCAD DWG), and a formal accuracy report with GCP residuals and check point RMSE. Optional: Revit mass model (LOD 200 shell), 360 drone video tour, annotated PDF condition report, and clash report against original construction documents. Specify deliverable format upfront - your Revit modeling team needs .RCP, your civil engineer needs .LAS and DWG, your owner may want a PDF. Different formats, different processing steps, different cost.

Do I need FAA approval for a drone survey of my commercial property?

Yes. Any commercial drone operation requires an FAA Part 107 remote pilot certificate held by the operator. Flights in controlled airspace (Class B near major airports, Class C, Class D) require LAANC authorization, which is near real-time for pre-approved ceiling altitudes - and in NYC, an NYPD permit under 38 RCNY Chapter 24 requires at least 30 days advance application. Chicago’s O’Hare and Midway corridors require Chicago Department of Aviation approval, typically 5-7 business days. TFRs can ground operations with no notice. Confirm your provider holds a current Part 107 certificate and carries $2M per-occurrence / $5M aggregate liability insurance with the property owner named as additional insured. If they can’t produce both on request, find another provider.

How long does a drone as-built survey take for a large commercial property?

Field capture runs 1 day for buildings up to 200,000 sq ft exterior and rooftop. Photogrammetry processing is 2-4 days; LiDAR processing is 1-2 days. Full deliverable set ships 5-10 business days from field capture. Hybrid projects adding interior TLS add 1-2 field days and 3-5 processing days on top. The main schedule risks are weather (wind over 15-20 mph grounds most platforms; rain is a no-fly) and airspace authorization in metro areas. Build a 2-day weather buffer into any project schedule and confirm LAANC authorization - and any city-level permits - before booking field crew.

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Ready to Scope Your Drone As-Built Survey?

Tell us the building size, what you need documented - rooftop, facade, interior, or all three - and your required deliverable format. We’ll tell you whether drone, TLS, or a hybrid is the right call, what it will cost, and whether your airspace requires city-level permits beyond LAANC. Contact our team through our professional as-built documentation services page to get a scoped quote based on your actual project.