Light Industrial and Last-Mile Underwriting

For the full industrial asset type taxonomy, see Industrial Asset Taxonomy. For physical specification benchmarks, see Industrial Building Specifications. For broad logistics underwriting and rent growth frameworks, see Industrial Logistics Underwriting.

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What Distinguishes Light Industrial

Light industrial is a catch-all for smaller-footprint, multi-tenant buildings with lower clear heights and a broader, more local tenant mix than big-box logistics. The distinguishing features are:

• Bay size: Individual units of 5,000–50,000 SF. Tenants range from local contractors and distributors to light manufacturers, auto service operators, specialty fabricators, and regional supply chain users.
• Clear height: 18–24 feet, compared to 36–40 feet for Class A bulk distribution. This physical constraint limits racking height and excludes most automated distribution tenants — but also caps construction cost and narrows the competitive set for tenants who do not need Class A specs.
• Multi-tenant format: Buildings typically house 5–20+ tenants. High tenant count means more leasing activity and rollover management, but also diversified rent rolls with no single-tenant concentration risk.
• Flex / R&D variants: Some light industrial buildings carry a meaningful office finish component (15–30% of total SF) for tech tenants, defense contractors, or medical device firms. These are underwritten differently — see Industrial Asset Taxonomy for the flex/R&D profile — but share light industrial's structural characteristics.
• Grade-level and dock-high mix: Many light industrial buildings combine grade-level drive-in doors with a limited number of dock-high positions. This dual-access format serves the widest range of smaller tenants but constrains rent relative to dock-dominant distribution facilities.

Last-mile is a distinct and institutionally significant sub-type within the infill industrial category. Key differences from generic light industrial:

• Size: 50,000–250,000 SF — larger than typical small-bay light industrial but far smaller than bulk distribution.
• Clear height: 24–32 feet. Higher than generic light industrial, supporting more dock count and e-commerce-density pick/pack operations.
• Location premium is definitional: A last-mile facility's entire value case rests on proximity to dense urban population. Being inside or adjacent to the urban core — often on infill land that repurposes retail, former industrial, or underutilized commercial parcels — is what makes these facilities function as last-mile. The same building relocated 20 miles to a suburban logistics park becomes a commodity.
• Tenant universe: Amazon last-mile delivery stations, UPS/FedEx urban hubs, grocery delivery and dark kitchen operators, e-commerce brands with same-day commitments, pharmacy and medical supply distributors.

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Last-Mile Economics and the Proximity Premium

The defining underwriting dynamic for last-mile is the proximity premium — the rent increment tenants pay to operate from inside or adjacent to dense urban demand pools. This premium exists because last-mile logistics economics are time-cost driven: delivery density per route, labor cost per stop, and van utilization all improve dramatically when a facility is 5–15 minutes from millions of consumers rather than 45–60 minutes from a suburban logistics park.

Urban infill land scarcity is the supply-side constraint that sustains this premium. In markets like Los Angeles, the New York metropolitan area, and Boston, available parcels inside the urban service area are finite and increasingly contested across competing uses (housing, commercial, civic). New supply of urban infill industrial is structurally limited by entitlement friction, environmental review, community opposition, and land cost — which means existing infill industrial assets have a durable competitive moat that bulk suburban product does not.

Rent differentials:

• Urban infill last-mile assets in the tightest supply-constrained metros command 25–75 bps tighter cap rates than comparable suburban bulk product.
• Rent per SF at infill last-mile assets is typically 20–40% higher than comparable suburban bulk in the same metro.
• In the most supply-constrained coastal markets — the Los Angeles Central market vs. the Inland Empire East, for example — this differential is even wider and functions as a durable structural premium rather than a cyclical one.

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Underwriting Light Industrial: Key Metrics

Light industrial underwriting differs from bulk distribution underwriting across nearly every line item. The KB benchmark references below apply to KB market coverage; confirm against submarket-level comparables before applying to specific deals.

Rent per SF (NNN):

• Multi-tenant small-bay: $8–$18 NNN depending on market and clear height
• Infill light industrial in constrained coastal markets: $18–$35+ NNN
• Last-mile urban infill (LA Central, NYC metro): $30–$50+ NNN — which can reach 2–3x bulk warehouse rates in the tightest nodes

Lease terms:

• Light industrial / small-bay: 3–7 years (shorter than bulk's typical 5–10+ year NNN)
• Last-mile: 3–7 years with options; Amazon and FedEx often negotiate shorter base terms with multiple renewal options

TI/LC norms:

• Small-bay light industrial: TI is minimal — $5–$15/SF for new tenants vs. $20–$35/SF for Class A bulk. Tenants typically self-fund fit-out for specialized equipment.
• Lease commissions: similar to bulk at 5–7% of base rent for primary terms, but smaller absolute dollar amounts given shorter terms and smaller unit sizes
• Important: Lower TI is a structural advantage for light industrial from an NOI and yield perspective, though it reflects lower buildout cost — not a tenant quality signal

Rollover risk:

• Higher than bulk due to shorter lease terms and smaller individual tenants with more volatile business cycles
• Institutional standard retention assumption: 65–75% (vs. 75–85% for single-tenant net-lease)
• Rollover concentration flag: if more than 35–40% of total NRA rolls in a single year, flag as a lease-up risk in underwriting
• Key offset: Diversified tenant count means any single lease expiration represents a smaller share of total income than in single-tenant assets

HVAC and electrical capex:

• Light industrial buildings require more HVAC capex per SF than bulk distribution because a larger share of tenants occupy climate-controlled flex or office portions
• Electrical capacity (200–400 amp service per unit) is a recurring capital item as tenants upgrade equipment
• Clear-height and HVAC/electrical deficiencies are the most common functional obsolescence flags on older multi-tenant product (pre-1990 stock)

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The Scarcity Premium: Supply-Constrained Markets

The relationship between land scarcity and infill industrial cap rates is well-documented across KB market coverage. Three market examples illustrate the spread between constrained and unconstrained:

Los Angeles (Central vs. Inland Empire East): The LA Central industrial market — which encompasses the ports complex, Mid-City, and near-urban industrial corridors — is effectively in permanent supply shortage. Vacancy in the tightest nodes has historically run below 2–3%, and new supply requires demolishing or repurposing existing structures on parcels that compete with housing and commercial uses. The Inland Empire East (IE East), by contrast, has abundant logistics land and has absorbed speculative supply in cycles. LA Central rents run 2–3x IE East rents on a per-SF basis, a differential that persists through demand cycles because the two markets serve fundamentally different tenant needs. See LA Industrial Corridors and Inland Empire West Industrial Core.

Cleveland infill (Stark County / East / Lake County): Cleveland's industrial market is dominated by small-bay users. Over 90% of new leases in 2025 were under 25,000 SF. Vacancy in the tightest Cleveland industrial submarkets runs at 2.5–3.0% — the Stark County, East, and Lake County tiers. This sub-5% infill vacancy is not about big-box logistics; it is about auto supply chain, steel processing, specialty chemicals, and manufacturing support tenants who need smaller footprints and value tenure. The 10.5% industrial cap rate in Cleveland reflects the secondary market premium but not the scarcity premium that coastal infill commands. See Cleveland Industrial and Logistics Submarkets.

Chicago O'Hare / I-290 West Suburbs: The O'Hare and I-290 industrial corridor recorded 3.3% vacancy in recent measurements — among the tightest in the Chicago metro. The O'Hare submarket benefits from airport adjacency (air cargo users, freight forwarders, logistics firms serving ORD) combined with infill land constraints in a mature suburban industrial market. This is a different scarcity driver than coastal urban infill — it is infrastructure-anchored scarcity rather than population-density scarcity. See Chicago O'Hare and I-290 Industrial Corridor.

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National Market Context (2025–2026)

Across KB market coverage, light industrial and small-bay product has shown more resilient fundamentals than big-box bulk in the current oversupply cycle. Big-box speculative product in Sunbelt markets (DFW, Phoenix, Las Vegas) has faced elevated vacancy from the 2022–2023 supply wave. Small-bay and multi-tenant light industrial in supply-constrained markets was largely insulated — the supply cliff that affects bulk product does not apply to infill light industrial because that product is not being built speculatively in constrained locations.

For national industrial deep-dive context and Cleveland, Chicago, Boston, and LA comparisons, see National Industrial Market Ranking 2026.

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Related Pages

• Industrial Asset Taxonomy
• Industrial Logistics Underwriting
• Industrial Building Specifications
• LA Industrial Corridors
• Cleveland Industrial and Logistics Submarkets
• Chicago O'Hare and I-290 Industrial Corridor
• Greater Boston Industrial and Logistics
• National Industrial Market Ranking 2026
• Industrial Hub

Sources

• Legacy Industrial Knowledge Wiki
• 2026 Q2 Market Research Sprint