Parcel Data for Submarine Cable Landing Station Site Selection
Submarine cables carry 99% of international internet traffic. Finding the right coastal parcels for landing stations can save $5M+ and cut 34 months off project timelines.
The global demand for data traffic will triple by 2030. That data travels through 1.5 million kilometers of submarine cables—99% of all international internet traffic. These cables cross oceans but they must still touch land at cable landing stations, and finding the right parcels for those stations is where projects live or die.
A bad landing site can add two years to a deployment timeline and millions in unexpected costs. Good site selection starts with parcel data.
The Subsea Cable Boom and the Coastal Land Challenge
TeleGeography tracks 598 active and planned submarine cable systems globally. New cables like Google's Firmina and Meta's 2Africa are expanding capacity to underserved regions. Each cable needs landing stations on both ends.
Landing station parcels are scarce for three reasons.
Coastal land is limited. Shorelines are already developed, protected, or both. Infrastructure requirements are strict—beach access, power, fiber, and security all in one location. Regulatory complexity is high: federal, state, local, tribal, and environmental rules all apply.
Traditional site selection relied on relationships with landowners and manual mapping. That worked when cables landed once per decade. With 100+ new systems planned through 2028, the process needs to scale.
What Makes a Parcel Suitable for Cable Landing
Not every beachfront parcel works for a cable landing station. The site must satisfy six categorical requirements.
| Requirement | Why It Matters | Data Needed |
|---|---|---|
| Beach access | Cables exit the ocean in a 100–300 meter landing zone | Parcel proximity to coastline, beachfront ownership |
| Cable duct pathways | Subsea cables run through underground conduits to the station | Underground utility maps, easement records |
| Power capacity | Stations draw 1–5 MW continuously | Grid maps, substation locations, capacity data |
| Fiber backhaul | Terrestrial fiber connects to core networks | Existing fiber routes, lit building status |
| Zoning compliance | Industrial or mixed-use zoning typically required | Parcel zoning codes, comprehensive plans |
| Environmental clearance | Coastal habitats, wetlands, critical species present | USFWS habitat maps, NOAA fisheries data |
Parcel data ties these layers together. Without parcel boundaries, you're screening raster data without knowing who owns what or how the pieces connect.
The Geographic Method: From Cable Route to Parcel Selection
Cable landing site selection follows a predictable workflow. Parcel data supports every step.
Step 1: Define the Landing Zone
Marine survey teams identify a cable route that avoids shipwrecks, coral reefs, and fishing grounds. The route terminates at a landing point—a specific lat/lon on the coast. Engineers draw a search radius, typically 2–5 miles inland, to find suitable station parcels.
Step 2: Filter Parcels by Attributes
Within that search radius, planners exclude parcels that fail hard constraints.
Ownership type matters. Government parcels often hold more permitting risk than private. Zoning classification matters—residential zones rarely permit industrial infrastructure. Lot size matters. Stations typically need 0.5–2 acres; smaller parcels require assembly. Coastal overlays matter too. CBRA zones, wetlands, and critical habitats add permitting complexity.
Parcel data with land use codes and ownership flags automates this screening.
Step 3: Overlay Infrastructure Layers
Candidate parcels get scored on soft factors. Proximity to 69kV+ transmission lines. Distance to existing fiber routes—shorter means cheaper boring. Elevation above sea level for flooding resilience. Beach profile, since sand versus rock affects duct installation cost.
Step 4: Landowner Outreach
With a shortlist of 5–10 parcels, the acquisition team contacts owners. Parcel data provides the owner name and mailing address for initial outreach. Professional sites use this data to prepare term sheets before the first call.
Step 5: Environmental and Regulatory Review
The Army Corps of Engineers requires permits for any work below the mean high water line. FEMA flood maps trigger building elevation requirements. Coastal Zone Management Act consistency reviews add state-level scrutiny.
Parcel boundary geometry feeds into these reviews. Accurate boundaries define the project footprint that regulators evaluate.
Case Study: How One Operator Avoided a Two-Year Delay
A major cable operator planned a landing in the Pacific Northwest. Their initial site selection identified a coastal industrial park with available space, power, and existing fiber.
Parcel analysis surfaced a problem: the property sat on a former wetland. The state Department of Ecology flagged it as a high sensitivity site. The permit timeline stretched from 18 months to an estimated 48 months.
Using parcel data with environmental overlays, the team identified an alternative site 3 miles north—privately owned, zoned industrial, above the floodplain, with no environmental designations. The parcel owner was a real estate holding company open to long-term leases.
- Original site permit timeline: 48 months
- Alternative site permit timeline: 14 months
- Avoided cost of delay: $2.3 million in carry costs
- Total project savings: $5+ million when including land costs
This is the difference parcel data makes. Without it, the team would have discovered the wetland issue six months into negotiations, not six hours.
Regulatory Layers: What Parcel Data Surfaces
Cable landing stations face multi-jurisdictional permitting. Each layer brings different data needs.
Federal Requirements
Army Corps of Engineers Section 10/404 permits govern work in navigable waters and wetlands. The permit application requires a site map with parcel boundaries, wetland delineation relative to property lines, and alternative site analysis—why this parcel, not that one.
FCC cable landing licenses authorize international cables. The public notice process involves local stakeholders who review parcel maps to understand facility scale and impact.
State Coastal Zone Management
States with coastal management programs (all coastal states except Alaska) require federal consistency determinations. Parcel data demonstrates consistency with local coastal zone plans, alignment with state utility siting priorities, and minimization of coastal resource impacts.
Tribal Consultation
Cable routes and landing sites near tribal lands trigger government-to-government consultation. Parcel data identifies tribal trust lands from Bureau of Indian Affairs records, historical treaty fishing grounds from NOAA data, and archaeological sensitivity zones.
Local Permitting
City and county permits include building, electrical, grading, and stormwater. Parcel zoning determines eligibility. Parcel dimensions affect setbacks and buffer requirements.
The Data Stack for Landing Site Selection
Effective site selection integrates multiple data layers anchored by parcel geometry.
| Layer | Source | Format | Update Frequency |
|---|---|---|---|
| Parcel boundaries | County assessors | GeoJSON/Shapefile | Annual or quarterly |
| Ownership & addresses | County assessors | CSV/JSON | Monthly to annually |
| Zoning | Municipal GIS | Shapefile | As ordinances change |
| Coastal hazards | FEMA, NOAA | Raster | Varies |
| Wetlands | USFWS NWI | Shapefile | Periodically |
| Subsea cable routes | TeleGeography | Proprietary | Varies |
| Fiber maps | Various | Varies | Proprietary |
Parcel data is the glue. Property boundaries let you spatially join these layers. Ownership data initiates negotiations. Zoning flags show-stoppers early.
Challenges in Coastal Parcel Data
Coastal counties present unique parcel data challenges.
Dynamic shorelines erode, changing the high water line and affecting deed descriptions. Some parcels have moveable or ambulatory boundaries tied to the shoreline.
Submerged lands complicate things. States own submerged lands seaward of the mean high water line. Cable ducts cross this boundary, requiring state leases or easements. Parcel data typically starts at the high water line, not below it.
Fragmented ownership creates problems. Coastal development produced complex subdivision patterns. One cable station site might involve assembling multiple lots with different owners.
Flood zone complexity is an issue too. FEMA FIRMs update slowly. A parcel's flood zone designation may not reflect recent remapping or climate-driven sea level rise.
These challenges make accurate, current parcel data even more critical. Outdated ownership records mean outreach to people who no longer control the land. Missing land use codes mean screening out viable sites for the wrong reasons.
Future Trends in Cable Landing Siting
The industry is evolving in ways that increase demand for parcel data.
Cloud cable landing stations are one trend. Hyperscalers like AWS, Google, and Microsoft are building their own cable systems. They want direct connections to their data centers, not traditional carrier hotels. This shifts landing priorities from fiber density to data center proximity.
Co-location with offshore wind is another. East Coast offshore wind projects are creating new cable corridors. Landing stations for subsea fiber may share infrastructure with offshore wind export cables, requiring parcel data that accounts for both uses.
Resilient dual landings are becoming standard. Major cables now plan redundant landings in different regions to survive natural disasters or physical attacks. Each landing needs independent parcel screening, doubling the data demand.
Getting Started with Parcel Data for Cable Projects
If you're planning a submarine cable landing project, parcel data should be in your toolkit from day one.
Request a sample of parcel data for your target coastal county. Look for: property boundary GeoJSON polygons; owner name and mailing address; land use code and zoning classification; building footprint count and year built; acreage and frontage measurements.
GetParcelData provides normalized parcel data for all coastal counties in the United States. Coverage includes standardized fields across county assessor systems, delivered via API or bulk export.
Check coverage for your coastal counties →
Submarine cables run under oceans. Landing stations run on land—and land decisions start with parcel data.