The following reflects Inland Empire office market conditions as of Q3 2026.
The Inland Empire office market in Q3 2026 experienced steady vacancy, lower net absorption, and fewer construction deliveries year over year. Explore our full Inland Empire office market report for deeper insights into leasing trends, sale activity, and submarket performance.
Frequently Asked Questions
What is the Inland Empire office vacancy rate in Q3 2026?
The Inland Empire direct office vacancy rate was 4.9% in Q3 2026, according to Kidder Mathews research. That compares with 4.8% in Q2 2026 and 5.0% in Q3 2025, a year-over-year decrease of 10 basis points. (Data source: CoStar)
What is the Inland Empire office availability rate in Q3 2026?
The Inland Empire total office availability rate was 6.5% in Q3 2026, according to Kidder Mathews research. That is down from 6.9% in Q2 2026 and 7.1% in Q3 2025, a year-over-year decrease of 60 basis points. (Data source: CoStar)
What are average office asking rents in the Inland Empire in Q3 2026?
The Inland Empire direct asking lease rate for office space was $2.11 per square foot per month (full service) in Q3 2026, according to Kidder Mathews research. Rents were unchanged from $2.11 in Q2 2026 and up 4.5% from $2.02 in Q3 2025. (Data source: CoStar)
How much office leasing activity occurred in the Inland Empire in Q3 2026?
Inland Empire office leasing activity totaled 377,953 square feet in Q3 2026, according to Kidder Mathews research. Year-to-date 2026 leasing activity reached 1,272,717 square feet, down 36.89% from 2,016,536 square feet during the same period in 2025. (Data source: CoStar)
What was net absorption for Inland Empire office space in Q3 2026?
Inland Empire direct office net absorption was negative 54,946 square feet in Q3 2026, according to Kidder Mathews research. Net absorption measures the change in occupied space, so a negative figure means more space was vacated than newly occupied during the quarter. Year-to-date 2026 net absorption was negative 15,881 square feet, compared with positive 651,930 square feet through the same period in 2025. (Data source: CoStar)
What office space is under construction in the Inland Empire in Q3 2026?
The largest significant office project under construction in the Inland Empire in Q3 2026 is RUHS Wellness Village, a 67,497-square-foot building at 23815 Placentia Ave in Inland Empire East, owned by the Riverside County Economic Dev. Agency and scheduled for delivery in October 2026. Kidder Mathews research lists six significant projects with deliveries scheduled from October 2026 through January 2027, including 4440 Brockton Ave (42,640 square feet) and Makena Medical Rancho Springs (32,292 square feet). (Data source: CoStar)
What was the largest office sale in the Inland Empire in Q3 2026?
The largest Inland Empire office sale in Q3 2026 was Northpointe (Recapitalization), a 280,173-square-foot property in Inland Empire East that sold for $95,012,000, or $339.12 per square foot, according to Kidder Mathews research. SAC Health System was the buyer and Quarry Capital was the seller. (Data source: CoStar)
Which Inland Empire submarkets had significant office sales in Q3 2026?
Significant Q3 2026 office sales in the Inland Empire were concentrated in Inland Empire East, which recorded four of the five largest transactions, according to Kidder Mathews research. The fifth, Piemonte at Ontario Center (a debt assumption), sold for $33,750,000, or $275.28 per square foot, in Inland Empire West. Total office sale volume was 1,329,397 square feet in Q3 2026 and 1,742,052 square feet year to date, up 7.06% from 1,627,245 square feet in 2025. (Data source: CoStar)
What was the largest office lease in the Inland Empire in Q3 2026?
The largest significant Inland Empire office lease in Q3 2026 was a 33,663-square-foot renewal by OPC Trucking Inc. at Interstate Business Park in Inland Empire East, signed in July 2026, according to Kidder Mathews research. The landlord is TA Realty. The next largest was 23,074 square feet at Inland Terrace Corporate Center in September 2026. (Data source: CoStar)
How did the Inland Empire office market trend year over year in Q3 2026?
Year-over-year trend indicators in the Kidder Mathews Q3 2026 Inland Empire office report show vacancy holding steady while net absorption and construction deliveries declined. Direct vacancy was 4.9% versus 5.0% a year earlier, and year-to-date leasing activity was down 36.89%. (Data source: CoStar)
Last updated: Q3 2026. Data source: CoStar. Compiled by the Kidder Mathews Research Group.
Q3 2026 Inland Empire Office Market: Key Data Points
Explore our full Inland Empire office market review for deeper insights into leasing trends, sale activity, and submarket performance.
- Direct Vacancy Rate: The Inland Empire direct office vacancy rate was 4.9% in Q3 2026, up from 4.8% in Q2 2026 and down 10 basis points from 5.0% in Q3 2025.
- Total Availability Rate: Availability fell to 6.5% from 6.9% in Q2 2026 and 7.1% in Q3 2025, a decrease of 60 basis points year over year.
- Direct Asking Lease Rate: Asking rents were $2.11 per square foot per month, unchanged from Q2 2026 and up 4.5% from $2.02 in Q3 2025.
- Leasing Activity: Leasing totaled 377,953 square feet in Q3 2026 and 1,272,717 square feet year to date, down 36.89% from 2,016,536 square feet in 2025.
- Direct Net Absorption: Net absorption was negative 54,946 square feet in Q3 2026 and negative 15,881 square feet year to date, compared with positive 651,930 square feet in 2025.
- Sale Activity: Sale transactions totaled 1,329,397 square feet in Q3 2026 and 1,742,052 square feet year to date, up 7.06% from 2025. The largest sale was Northpointe (Recapitalization) at $95,012,000, or $339.12 per square foot.
- Under Construction: Six significant projects are under construction, led by RUHS Wellness Village (67,497 square feet) in Inland Empire East, with deliveries scheduled from October 2026 through January 2027.
Market Breakdown
| Metric | Q3 2026 | Q2 2026 | Q3 2025 | YOY Change |
|---|---|---|---|---|
| Direct Vacancy Rate | 4.9% | 4.8% | 5.0% | -10 bps |
| Total Availability Rate | 6.5% | 6.9% | 7.1% | -60 bps |
| Direct Asking Lease Rate | $2.11 | $2.11 | $2.02 | 4.5% |
| Metric | Q3 2026 | 2026 YTD | 2025 YTD | YOY Change |
|---|---|---|---|---|
| Leasing Activity (SF) | 377,953 | 1,272,717 | 2,016,536 | -36.89% |
| Sale Transactions (SF) | 1,329,397 | 1,742,052 | 1,627,245 | 7.06% |
| Direct Net Absorption (SF) | -54,946 | -15,881 | 651,930 | N/A |
Significant Sale Transactions Q3 2026
| Property | Submarket | SF | Sale Price | $/SF | Buyer | Seller |
|---|---|---|---|---|---|---|
| Northpointe (Recapitalization) | Inland Empire East | 280,173 | $95,012,000 | $339.12 | SAC Health System | Quarry Capital |
| Murrieta Medical Office (Ground Leasehold) | Inland Empire East | 152,797 | $50,050,000 | $327.56 | Remedy Medical Properties | Welltower Inc. |
| Piemonte at Ontario Center (Debt Assumption) | Inland Empire West | 122,602 | $33,750,000 | $275.28 | 901 Via Piemonte, LLC | Greenlaw Partners |
| La Quinta Corporate Center | Inland Empire East | 42,423 | $10,900,000 | $256.94 | Schnitzer Properties, LLC | James & Sharon Paul |
| Ynez Business Center | Inland Empire East | 16,700 | $5,000,000 | $299.40 | AVID Ynez | Aone Dev LP |
Significant Lease Transactions Q3 2026
| Property | Submarket | SF | Transaction Date | Landlord | Tenant |
|---|---|---|---|---|---|
| Interstate Business Park | Inland Empire East | 33,663 | July 2026 | TA Realty | OPC Trucking Inc. (Renewal) |
| Inland Terrace Corporate Center | Inland Empire East | 23,074 | September 2026 | Mike Realty | Undisclosed |
| Ontario Corporate Center | Inland Empire West | 11,997 | September 2026 | MGR Real Estate | Undisclosed |
| 202 E Airport Dr | Inland Empire East | 11,866 | July 2026 | Davenport Partners, Inc. | Undisclosed |
| Vista Office Centre | Inland Empire East | 11,423 | August 2026 | Strauss Investments | Undisclosed |
Significant Under Construction
| Property | Address | Submarket | SF | Owner | Delivery Date |
|---|---|---|---|---|---|
| RUHS Wellness Village | 23815 Placentia Ave | Inland Empire East | 67,497 | Riverside County Economic Dev. Agency | October 2026 |
| 4440 Brockton Ave | 4440 Brockton Ave | Inland Empire East | 42,640 | Riverside Healthcare System, L.P. | December 2026 |
| Makena Medical Rancho Springs | 25420 Hancock Ave | Inland Empire East | 32,292 | Makena Medical Buildings | October 2026 |
| Midtown Spectrum | 15075 Amargosa Rd | Inland Empire North | 26,208 | GRP Capital | January 2027 |
| Vista Dos Lagos | 2794 Pronio Cir | Inland Empire East | 17,809 | Rexco Development | October 2026 |
| 16520 Arrow Blvd | 16520 Arrow Blvd | Inland Empire West | 14,465 | AGF Investments, LLC | December 2026 |
Data as of Q3 2026. Source: CoStar. Prepared by the Kidder Mathews Research Group.
ContactGARY BARAGONA |
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