Commercial Real Estate Basics

The commercial real estate market encompasses office buildings, retail centers, industrial warehouses, and mixed-use complexes leased to tenants for business operations. It is priced on cap rates, lease terms, and tenant creditworthiness rather than owner-occupancy.

The four pillars: office, retail, industrial, and mixed-use

Office real estate houses corporate tenants, from law firms to tech headquarters. Pricing hinges on tenant quality (a Fortune 500 lease commands premium valuations), lease duration, and location desirability. Remote work has hollowed out central business districts since 2020; many office REITs now trade at distressed cap rates, and vacancy rates in secondary markets are extreme.

Retail property ranges from strip malls to flagship shopping centers. It has been structurally challenged by e-commerce, but physical retail persists for experiential categories—luxury goods, restaurants, fitness. A flagship location on a premium street (Fifth Avenue, Champs-Élysées) commands rents 10x higher than a secondary mall. Retail REITs have shrunk as a category; survivors own trophy assets with fortress demographics.

Industrial warehouses are the decade’s winner. Amazon’s logistics demand created a structural shortage of modern last-mile facilities. Industrial assets trade at sub-3% cap rates in major logistics hubs—so tight that a single basis point move in interest rates swings valuations 2–3%. Industrial REITs enjoy long leases (often 10+ years), low turnover, and pricing power.

Multifamily (apartments) spans everything from workforce housing to luxury high-rises. Unlike office or retail, multifamily is less volatile and more recession-resistant; people always need shelter. Multifamily REITs hold up better in downturns but command lower returns than trophy office or industrial.

Cap rates and the rent-discount relationship

The cap rate is Net Operating Income / Purchase Price. A $10 million building generating $500,000 in annual NOI trades at a 5% cap rate. Cap rates move inversely to asset prices: if interest rates fall, cap-rate compression drives prices up (fewer percentage points of yield needed). Conversely, when inflation spikes and the Fed tightens, cap rates widen, and prices fall. This duration risk is real—a 1.5% bump in discount rates destroys 15–20% of building value if rents stay flat.

Lease structures: triple-net, modified gross, and full service

Most institutional commercial leases are triple-net (NNN): tenant pays base rent plus property tax, insurance, and maintenance (CAM). This shifts operating risk to the occupant and is standard for industrial and suburban office. Modified gross (common in urban office) splits NNN costs between landlord and tenant. Full-service leases (rarer, usually multifamily or ultra-premium office) include all operating costs; the landlord pockets the spread between rent and actual expenses. Lease choice determines how much inflation protection the landlord has—NNN triple-nets auto-escalate with property taxes; full-service leases expose the landlord to expense creep.

Tenant quality and creditworthiness

A long lease signed with Amazon or Google supports a 3.5% cap rate; the same building leased to a 10-person startup commands 6–7%. Credit rating agencies don’t exist for commercial tenants the way they do for bonds, so credit analysis is manual. CMBS underwriters scrutinize tenant financials, debt levels, and industry stability. A single-tenant building with a below-investment-grade occupant is illiquid and risky.

Development and value-add strategies

Development (buying raw land, building from scratch) carries permitting risk, construction-cost inflation, and pre-leasing uncertainty but offers the highest returns if successful—20%+ IRR for trophy projects. Value-add (buying stabilized property, renovating, re-tenanting, exiting at a tighter cap rate) is the workhorse strategy. It generates 12–16% returns by harvesting rent growth and operational improvements. Core stabilized assets (fully tenanted, blue-chip tenants, triple-A locations) deliver lower returns (4–6% cap) but less risk.

Leverage and CMBS mechanics

Most commercial properties are financed with 60–70% leverage. Debt covenants typically include loan-to-value (LTV) caps, interest-coverage ratios, and debt-service coverage (NOI must exceed debt service by 1.2x–1.5x). If interest rates rise and a property’s income drops, the owner can trigger a covenant breach and face acceleration. CMBS pools dozens of loans into rated tranches, with junior tranches absorbing losses first. The 2008 crisis exposed how opaque CMBS asset quality could be—lenders had issued loans on speculative assumptions.

ESG and climate risk

Institutional investors increasingly price in climate hazard. A coastal office building facing 1-in-100-year flood risk five years out may not refinance at favorable LTV. Carbon-intensive industrial properties (heavy manufacturing) and natural-gas heating in office face regulatory headwinds and tenant skepticism. Conversely, “green-certified” buildings (LEED, net-zero-ready) command rent premiums and attract institutional ESG capital. This creates bifurcation: trophy assets with resilience sell at record-tight cap rates; stranded assets languish unsold.