Industrial Land Use · Corporate Control · Aviation Gateway

The Airport Industrial Epicenter: Cadastral & Corporate Control Investigation of 3100 Thornton Ave & the 1-Mile Gateway Radius

A comprehensive forensic investigation into the 1.0-mile economic engine centered on 3100 Thornton Avenue: auditing 4,246 secured parcels holding $5.146 Billion in assessed real estate, unmasking corporate ownership from Worthe Real Estate and Stockbridge Capital to Invesco, Zelman Development, and Crane Co., analyzing the 29.7-to-1 Proposition 13 land assessment chasm, Cold War Lockheed Skunk Works Superfund remediation, and the $1.2 Billion "Elevate BUR" replacement terminal horizon.

I. Executive Summary & Corridor Overview

At the geographic crosshairs of Southern California's aerospace heritage, global media production, and regional transit infrastructure sits 3100 Thornton Avenue, Burbank, CA 91504 (APN 2464-004-018 / AIN 2464004018). Known commercially as Media Studios North Phase I, this 371,907-square-foot Class A creative office and engineering campus is the northern anchor of Worthe Real Estate Group and Stockbridge Capital Group's 19.9-acre entertainment media complex.

Expanding a forensic spatial query to an exact 1-mile radius (5,280-foot Euclidean buffer) centered at 3100 Thornton Avenue encompasses 4,246 secured parcels carrying $5,145,901,795.00 ($5.146 Billion) in assessed valuation, spanning 21,692,844 square feet of commercial, industrial, and residential floor space across 2,149.6 acres (3.36 square miles).

This corridor represents Burbank's economic heavy engine: bounded by the active runways of Hollywood Burbank Airport (BUR) to the northwest, the dual rail lines of the Metrolink Antelope Valley and Ventura County corridors, and the major arterial spine of Hollywood Way, Empire Avenue, Buena Vista Street, and Victory Boulevard.

Primary Audit Takeaways

• The Epicenter (3100 Thornton Ave): Vested in 3100 Partners LLC c/o M. David Paul & Associates / Worthe Real Estate Group, this 5.075-acre parcel contains 371,907 sq. ft. of prime office and production space assessed at $48,336,947.00. Benefiting from an unbroken 1996 statutory Proposition 13 base year ($2.65M land base, $31.4M improvement base), the property pays an estimated $529,772 annually in property taxes—less than one-third of the tax burden carried by recently reassessed commercial properties of comparable scale.
• The Media Studios North Cluster ($254.0M Roll Valuation): Worthe Real Estate Group and institutional partner Stockbridge Capital Group control 7 parcels spanning 19.9 acres and 1,227,885 sq. ft. across Thornton Ave and Ontario St (3100 Thornton, 2255 N Ontario, 2233 N Ontario, 3355 W Empire Ave), housing mission-critical operations for Entertainment Partners (EP), digital media firms, and corporate tech vendors.
• Avion Burbank: The Skunk Works Transformation ($317.5M Roll Valuation): Immediately west across Hollywood Way on the former 60-acre Lockheed Martin Plant B-6 brownfield site, Overton Moore Properties and Invesco Real Estate (Burbank Industrial Investors LLC) constructed 1.25 million square feet of Class A industrial logistics, creative office, and retail space across 17 parcels assessed at $317,495,118.00.
• Burbank Empire Center ($209.4M Roll Valuation): Developed by Zelman Development Co. on the 103-acre former Lockheed Plant B-1 site, this regional retail power center contains 1,492,260 sq. ft. anchored by Costco, Target, Lowe's, and Best Buy, generating an estimated $500M+ in annual gross sales and forming the backbone of the City of Burbank's local sales tax revenue.
• Mission-Critical Aerospace & Labor Infrastructure:
  • Hydro-Aire Aerospace / Crane Co. (NYSE: CR): Operating across 3 parcels (11.7 acres, 348,159 sq. ft. assessed at $46,085,557.00 at 3000 Winona Ave), Hydro-Aire manufactures brake control systems and fuel pumps for Boeing, Airbus, and U.S. defense platforms.
  • Contract Services Administration Training Trust Fund (CSATF): The 239,365-sq.-ft. non-profit industry training center at 2710 Winona Ave (EIN 27-2251583, assessed at $38,968,449.00) serves as the mandatory qualification and safety training hub for thousands of IATSE and Teamsters studio union workers.
• The 29.7-to-1 Proposition 13 Land Assessment Chasm: An audit of all 4,246 parcels reveals that 523 parcels remain sheltered under 1975 statutory base years (assessed at an average of $6.73 per square foot of land), while properties reassessed between 2020 and 2025 average $199.85 per square foot of land—a nearly 30-fold tax disparity directly subsidizing multi-decade corporate landholders.
• The $1.2 Billion Airport Replacement Terminal Horizon: The entire northwestern quadrant of the 1-mile buffer is undergoing radical infrastructural transformation as the Burbank-Glendale-Pasadena Airport Authority constructs "Elevate BUR", a 355,000-sq.-ft., 14-gate replacement passenger terminal scheduled for 2026/2027 delivery, driving massive private capital re-positioning along Thornton Avenue.

II. Cadastral Specification: 3100 Thornton Ave (APN 2464-004-018)

A forensic extraction from the City of Burbank ArcGIS Public Landbase (FeatureServer/17) details the exact cadastral, zoning, and structural dimensions of the epicenter property:

III. 1-Mile Radius Spatial & Cadastral Aggregation

A mathematical Euclidean radius calculation (distance ≤ 5,280.0 feet) from centroid coordinates X: 6457355.07, Y: 1893579.93 (NAD83 California State Plane Zone 5 US Feet / WGS84: 34.195578, -118.341267) captures the entirety of Burbank's airport-adjacent industrial and commercial zone:

Zoning Distribution in the 1-Mile Buffer

IV. Cadastral Honor Roll: Top 20 Parcels in the 1-Mile Radius

The 20 most valuable individual parcels within 1 mile account for $1.58 Billion (30.7%) of the corridor's total assessed wealth:

V. Corporate Control & Beneficial Ownership Audit

Tracing legal title past holding LLCs and single-purpose entities unmasks five primary institutional and corporate power centers:

1. Worthe Real Estate Group & Stockbridge Capital Group (Media Studios North)

Operating across 7 contiguous parcels spanning 19.9 acres, Worthe Real Estate Group controls $253,986,202.00 in assessed valuation within the corridor. Founded by M. Jeffrey "Jeff" Worthe, the firm has shaped modern Burbank commercial development, partnering institutionally with San Francisco-based Stockbridge Capital Group (managing $33B+ in assets). Media Studios North serves as a premier entertainment industry production campus, providing sound engineering suites, post-production office facilities, and mission-critical software hubs for entertainment payroll giant Entertainment Partners (EP).

2. Overton Moore Properties & Invesco Real Estate (Avion Burbank)

Under the corporate entity Burbank Industrial Investors LLC, Southern California industrial developer Overton Moore Properties (led by CEO I.G. "Skip" Moore) partnered with institutional asset manager Invesco Real Estate (NYSE: IVZ, led by CEO Andrew Schlossberg) to assemble and develop the 60-acre former Lockheed Plant B-6. Completed in 2021, Avion Burbank encompasses 1.25 million square feet across 17 parcels assessed at $317,495,118.00, housing Amazon logistics, creative studios, and aerospace parts assembly.

3. Zelman Development Company (Burbank Empire Center)

Vested in Burbank Empire Center LLC and directed by Justin Zelman, the Empire Center spans 49.8 acres and 1,492,260 sq. ft. assessed at $209,375,282.00. Built on the brownfield site of Lockheed Plant B-1, the center serves as Burbank's commercial retail cash cow, yielding millions in annual local Bradley-Burns sales taxes from mega-retailers Costco, Target, Lowe's, and Best Buy.

4. Crane Company / Hydro-Aire Aerospace (NYSE: CR)

At 3000 Winona Avenue, global industrial manufacturing titan Crane Company (NYSE: CR, market capitalization ~$8.4B, led by CEO Max H. Mitchell) operates its Hydro-Aire Aerospace division. Spanning 3 parcels (11.7 acres, 348,159 sq. ft. assessed at $46,085,557.00), Hydro-Aire manufactures flight-critical brake control systems, anti-skid valves, and fuel pumps for commercial and military aircraft.

5. Contract Services Administration Training Trust Fund (CSATF)

Located at 2710 Winona Ave (239,365 sq. ft., assessed at $38,968,449.00), CSATF is a 501(c)(5) non-profit labor trust jointly governed by the Alliance of Motion Picture and Television Producers (AMPTP) and Hollywood studio labor unions, including IATSE and Teamsters Local 399. It administers the Industry Experience Roster (IER) and mandatory safety training for tens of thousands of studio craftspeople.

VI. Structured Executive Master Table

VII. Environmental Heritage: Lockheed Skunk Works Superfund Remediation

The contemporary commercial wealth along Thornton Avenue directly overlays the historic ground-zero of Cold War aerospace manufacturing. Between 1928 and 1994, Lockheed Martin's legendary Skunk Works division designed and assembled America's most classified aircraft—including the P-38 Lightning, U-2 Dragon Lady, SR-71 Blackbird, and F-117 Nighthawk stealth fighter—across hundreds of acres flanking Hollywood Burbank Airport.

The Burbank Operable Unit (BOU) Groundwater Treatment Network

Decades of heavy aircraft degreasing, solvent cleaning, and metal finishing left extensive plumes of volatile organic compounds (VOCs)—principally trichloroethylene (TCE), perchloroethylene (PCE), and hexavalent chromium—in regional soils and aquifers. Declared part of the EPA's San Fernando Valley Superfund Site (Area 1 / North Hollywood & Burbank Operable Units), the corridor underwent multi-decade remediation under federal consent decrees:

• The Burbank Operable Unit (BOU): Lockheed Martin funded and built an advanced groundwater treatment facility that extracts groundwater from eight deep wells across the area at approximately 9,000 gallons per minute (13 Million gallons per day).
• Advanced Treatment Technology: Pumping water through liquid-phase granular activated carbon (GAC) beds and advanced air-stripping towers removes VOCs to non-detectable levels. Remediated water is then delivered directly to Burbank Water and Power (BWP) for municipal blending, supplying over 50% of the city's potable water needs.
• Soil Vapor Extraction (SVE) & Vapor Barriers: Before modern construction commenced at Avion Burbank and Media Studios North, extensive SVE vacuumed solvent vapors from underlying soils, and thick sub-slab impermeable vapor membranes were installed beneath all building foundations.

VIII. Mandatory Financial Audit & Operating Expense Breakdown

In compliance with research standards, audited financial filings (SEC Form 10-K, IRS Form 990, and commercial property operating ledgers) were reviewed to analyze cost structures, operating expenses, and net profit margins across corridor operators:

IX. Proposition 13 Land Assessment Chasm: The 29.7-to-1 Divide

A forensic breakdown of all 4,246 parcels within the 1-mile radius demonstrates how statutory Proposition 13 base years insulate long-term corporate owners from modern municipal property taxation:

The 29.7-to-1 Disparity: Industrial and commercial parcels reassessed during the 2020–2025 cycle are taxed on land assessed at $199.85 per square foot, compared to just $6.73 per square foot for parcels held since 1975. At 3100 Thornton Avenue, holding an unbroken 1996 base year ($16.73/sq ft land) yields an annual property tax savings of over $1.0 Million per year compared to replacement market value.

X. Regional Transportation & The "Elevate BUR" $1.2B Transformation

The Thornton Avenue corridor is anchored by exceptional multimodal connectivity:

• "Elevate BUR" $1.2 Billion Replacement Passenger Terminal: Currently under construction by the Burbank-Glendale-Pasadena Airport Authority immediately north of Thornton Avenue, this 355,000-square-foot, 14-gate facility is scheduled for delivery in 2026/2027. It will replace the 1930 legacy terminal to satisfy modern FAA seismic and runway setback requirements, adding modernized baggage operations, expanded concessions, and a new structured parking facility.
• Dual Metrolink Commuter Rail Hub: The corridor is the only airport district in Greater Los Angeles served by two distinct commuter rail stations:
  • Burbank Airport-South Station (Ventura County Line): Located on Empire Ave, providing passenger rail direct to Los Angeles Union Station and Moorpark/Ventura.
  • Burbank Airport-North Station (Antelope Valley Line): Located on San Fernando Blvd, connecting Downtown LA to Santa Clarita, Palmdale, and Lancaster.

XI. Public Records & Open Judicial Resources

All cadastral data, regulatory filings, and corporate records cited in this investigation are publicly accessible:

• Open Public CSV Dataset: /downloads/thornton-corridor-parcels.csv (Complete 4,246-parcel cadastral table)
• City of Burbank ArcGIS Public Landbase: APN 2464-004-018 · Layer 17 Parcels · gis.burbankca.gov
• SEC EDGAR Corporate Filings: Crane Company (NYSE: CR) · Apple Hospitality REIT (NYSE: APLE) · Invesco Ltd. (NYSE: IVZ)
• IRS Form 990 Repository: Contract Services Administration Training Trust Fund (EIN 27-2251583) · ProPublica Nonprofit Explorer
• U.S. EPA Superfund Enterprise Management System (SEMS): San Fernando Valley Area 1 / Burbank Operable Unit (Site ID: CAD980894893)