Ontario CA retail space: where it's leasing in 2026

Ontario sits at the center of one of Southern California's fastest-moving retail markets. With 175,000 residents, direct freeway access via I-10 and I-15, and Ontario International Airport handling rising passenger traffic, the city draws both regional and local retail tenants. In 2026, leasing activity concentrates in three zones: power centers near the I-10/Haven Avenue interchange, the Milliken corridor north of the freeway, and inline spaces near Ontario Mills. Rates range from $2.25/SF NNN for second-generation space in older strips to $4.00/SF NNN for new construction or remodeled endcaps in dominant centers. This article maps where Ontario retail space is leasing, what tenants are competing for it, and what brokers are seeing in lease negotiations this spring.

Power centers near I-10 and Haven Avenue anchor the market

The stretch of Haven Avenue between Fourth Street and the I-10 freeway contains the densest concentration of national retail in Ontario. Centers here include Home Depot, Target, Costco, and multiple pad tenants. Inline spaces in these centers lease in the $3.00 to $3.75/SF NNN range for 1,500 to 3,000 square feet. NNN charges run $0.90 to $1.15/SF depending on CAM intensity and property tax allocation.

Demand comes from service tenants—urgent care, physical therapy, insurance offices—and food concepts looking for drive-through pads. In Q1 2026, we tracked four pad transactions near this corridor, all in the 2,000 to 2,500 square foot range. Drive-through quick-service tenants paid $4.50 to $5.25/SF NNN for new construction pads with dedicated ingress. Landlords in this zone hold firm on rent because freeway visibility and parking ratios support premium pricing.

Availability is tight. Vacancy in stabilized power centers here sits below 4 percent. When inline space turns over, landlords often field multiple offers within two weeks. Tenants should expect limited negotiating leverage on base rent, but CAM caps and TI allowances remain negotiable, particularly for creditworthy concepts willing to sign seven-year initial terms.

Milliken corridor north of I-10 attracts services and specialty retail

Milliken Avenue between Fourth Street and Foothill Boulevard runs through a mixed residential and commercial zone with household incomes averaging $85,000 within a two-mile radius. Retail here skews smaller format: 1,200 to 2,500 square foot units in neighborhood centers anchored by grocers like Stater Bros. or regional chains. Inline rates range from $2.50 to $3.25/SF NNN.

This corridor is leasing to beauty and wellness tenants, tutoring centers, pet services, and casual dining. In March 2026, a yoga studio took 1,800 square feet at $2.85/SF NNN with a $25/SF TI package. A month earlier, a poke bowl concept signed 1,400 square feet at $3.10/SF NNN with grease trap and hood allowances totaling $40,000. Landlords here compete on tenant improvement dollars rather than base rent concessions.

Parking is generous—ratios often exceed five spaces per 1,000 square feet—which appeals to service tenants whose customers arrive throughout the day rather than clustering at peak meal hours. Brokers report that landlords on Milliken prioritize stable, local operators over national credit but will negotiate longer free rent periods for tenants who invest heavily in buildout.

Ontario Mills periphery offers second-generation space for value tenants

Ontario Mills sits at the intersection of I-10 and I-15 and generates over 20 million annual visits. The outlet mall itself is largely full, but surrounding centers offer second-generation space at lower rates. Strips along Fourth Street and Inland Empire Boulevard east of the mall lease inline units from $2.25 to $2.75/SF NNN for spaces between 1,000 and 2,000 square feet.

Tenants here include mobile phone retailers, smoke shops, quick loan offices, and takeout restaurants targeting mall employees and nearby industrial workers. Landlords accept month-to-month or short-term leases more readily than in power center locations. One broker in our office closed a 1,200 square foot lease at $2.40/SF NNN with a two-year term and sixty days' free rent for a tenant willing to take as-is condition.

This zone sees higher turnover than Haven or Milliken corridors, but that turnover creates opportunity. Tenants who can move quickly and require minimal improvements can negotiate free rent periods of ninety to one hundred twenty days. We see landlords here motivated by occupancy rather than rental rate, particularly in centers that have struggled with anchor vacancies since 2023.

Industrial tenant demand is shaping retail leasing patterns

Ontario's industrial employment base—warehouses, logistics centers, and distribution facilities—drives midday and evening retail traffic. Food tenants that cater to shift workers are particularly active. In April 2026, a taco shop signed a 1,600 square foot lease at $3.00/SF NNN in a center on Archibald Avenue, explicitly citing proximity to Amazon and FedEx facilities as a site selection driver.

This industrial influence shows up in lease terms. Landlords along Archibald, Etiwanda, and east of Haven Avenue expect tenants to operate extended hours—often until 10 or 11 p.m.—and they price space assuming that traffic. Food tenants should verify that centers allow late-night operations and that neighboring tenants will not object to kitchen exhaust or delivery activity after dark.

Service retail—car washes, oil change bays, tire shops—also benefits from the industrial workforce. We tracked two automotive service leases in Q1, both over 3,000 square feet, at rates between $2.75 and $3.10/SF NNN. Landlords required proof of environmental insurance and waste disposal plans, but they moved quickly once those items were provided.

NNN charges and operating expense trends in Ontario centers

NNN charges in Ontario retail space range from $0.80/SF in older, lightly managed strips to $1.25/SF in newer power centers with active property management and high common area maintenance costs. CAM includes landscaping, parking lot resurfacing, signage maintenance, and security. Property taxes add $0.25 to $0.40/SF depending on assessed values, and insurance runs $0.10 to $0.15/SF.

Tenants should request three years of operating expense history and ask landlords to separate controllable from non-controllable expenses. We see landlords in Ontario willing to cap annual CAM increases at 3 to 5 percent, particularly for tenants signing leases longer than five years. Property tax pass-throughs are harder to cap, but tenants can negotiate a base year structure that limits exposure to reassessment.

Insurance costs have stabilized since 2024, when wildfire risk drove premiums higher across the Inland Empire. Most landlords now carry adequate coverage without spiking tenant pass-throughs, but tenants should confirm that the landlord's policy covers business interruption and that tenant liability limits align with lease requirements.

What landlords expect from tenants in Ontario lease negotiations

Ontario landlords prioritize financial strength, operating history, and speed to open. They request personal guarantees from single-unit operators and expect national tenants to provide corporate financials. Credit scores above 680 and two years of profitability in a similar concept carry weight. Landlords also ask for proof of liquidity—typically three to six months of rent and operating expenses in reserve.

Lease terms in Ontario average five to seven years for inline space and ten years for pad or anchor positions. Landlords resist three-year terms unless the tenant pays a premium or accepts reduced TI. Options to renew are standard, but landlords push for rent increases at renewal of 10 to 15 percent or fair market value, whichever is greater.

Tenant improvement allowances range from $15 to $50/SF depending on space condition, tenant creditworthiness, and lease length. Food tenants receive higher allowances due to grease trap, hood, and utility upgrade costs. Non-food tenants in second-generation space often receive $20 to $30/SF for cosmetic improvements. Landlords here are more willing to fund improvements than to reduce base rent, especially in competitive corridors where holding rate matters for property valuation.

Comparing Ontario to other Inland Empire retail submarkets

Ontario retail space leases at rates 10 to 20 percent higher than nearby Rancho Cucamonga or Fontana. The airport, freeway access, and density justify the premium. Rancho Cucamonga inline space averages $2.40 to $3.00/SF NNN, while Fontana runs $2.00 to $2.60/SF NNN for comparable units. Ontario sits closer to Riverside and San Bernardino pricing in the $2.75 to $3.50/SF NNN range.

Vacancy in Ontario hovers near 5 percent across all retail property types, lower than the Inland Empire average of 6.2 percent tracked in broader market reports. Tenant demand in Ontario is steadier because the market draws from both local residents and regional shoppers visiting Ontario Mills or the airport area. Landlords here see less seasonal fluctuation in traffic than landlords in purely residential submarkets.

For tenants comparing Ontario to other Inland Empire options, the trade-off is cost versus visibility. Ontario offers higher traffic counts and better freeway exposure, but rent is higher and landlords negotiate less aggressively on free rent. Fontana or Rancho Cucamonga may offer better deals for tenants prioritizing neighborhood foot traffic over regional draw.

Ontario retail space in 2026 is leasing fastest in power centers near I-10 and Haven, the Milliken corridor, and second-generation space around Ontario Mills. Rates range from $2.25 to $4.00/SF NNN depending on location, space condition, and tenant use. Landlords expect strong financials, realistic buildout timelines, and lease terms of five years or longer. Parker & Associates has represented tenants and landlords in Ontario since the late 1990s and tracks leasing activity across the Inland Empire weekly. If you are evaluating Ontario retail space or comparing it to other markets, call us at 949-796-7275 or email leasing@digitalre.com.