Item No. 8d_supp Date of Meeting October 28, 2025 Building 161E Renovation Construction Authorization October 28, 2025 Commission Meeting SEA Cargo Program 1. SEA is the Pacific Northwest region's major hub for air cargo 2. In 2024, more than 460,000 metric tons of air cargo moved through SEA, including international commodities valued in excess of $26 billion 3. 14 cargo facilities at SEA total approximately 425,000 square feet, mostly built between the 1970s and 1990s, and are at 100% occupancy 4. Many of the cargo buildings are older and have outdated building systems that are beyond their expected lifecycles 2 Project Location 161E Airport Vicinity Map 3 Project Scope Building upgrades include: 1. Replacing warehouse and office heating and cooling systems with higher efficiency system 2. Replacing underperforming and failing windows, skylights, and doors 3. Upgrading existing lighting to LED fixtures 4. Improving restroom fixtures and finishes 5. Installing a means to control access to the building, and 6. Providing a new fire alarm panel and alarm devices 4 Existing Conditions 1. Building systems (heating and cooling, electrical, fire protection, controls) are past useful life. 2. Windows, skylights, and doors are underperforming relative to current energy standards or failing due to age and condition. 3. Restroom fixtures and surfaces are aging, appearing unhygienic and outdated. 5 Existing Conditions Heating and Cooling System Exceeded Service Life Natural Gas 6 Existing Conditions Aging Skylights Leak Water and Heat 7 Existing Conditions 1980 Windows 50% Less Efficient than today's models 8 Existing Conditions Restroom Fixtures and Surfaces Unhygienic Water Wasting Fixtures Inefficient or Broken Water Heaters 9 Project Cost and Schedule Cost Breakdown This Request Total Project 0 $3,098,000 Construction Phase $10,891,000 $10,891,000 Total $10,891,000 $13,989,000 Design Phase Schedule Construction Start: Q2 2026 Project in Use: Q3 2027 10 Financial Analysis Project cost for analysis Business Unit (BU) Effect on business performance (NOI after depreciation) IRR/NPV (if relevant) $13,989,000 Airfield Commercial Cargo NOI after depreciation will increase NPV $(1.0M) NOI after debt service will be negative between ($293K and $10K) during 2028-2037. NOI after debt service becomes positive in year 13 (2038). CPE Impact N/A Assumptions: • 30 years analysis as that is estimated asset useful life. • The building is leased, and it generates about $750K annual lease revenue. • The base case is that the building won't be leased to the tenants due to its condition. • 7.6% discount rate based on risk scoring. • Annual debt service is around $1.2M based on 5.25% interest rate. • 3% annual rent increase due to inflation and additional 10% annual market rent increase attributable to renovation. Business & Properties will need to confirm with tenants to make sure this is acceptable. 11 Project Cone of Certainty We are here 12 Questions? 13