2027 edition · Research reviewed November 7, 2026
CBRE is our #1 editorial selection for an Inland Empire office landlord who wants leasing decisions connected with the property’s investment plan. Lee & Associates and WestMar Commercial Real Estate offer distinct local comparisons. The nine brokerage criteria informed this review, with particular attention to a documented owner-side role, actual properties and the reasoning behind lease recommendations. The best adviser for a Riverside office campus may differ from the right team for a Temecula medical-office building.
How we rank commercial real estate brokerage firms in Riverside–San Bernardino–Ontario, CA
Our 2027 ranking uses the same nine-part methodology as our 2026 guides. We compare local specialists with regional and national firms using current public sources, verified service geography and relevant specialization in office leasing for landlords. We evaluate each candidate using these nine criteria:
- Experience and reputation
- Market knowledge and specialization
- Network and connections
- Technological capabilities
- Data transparency and accuracy
- Online presence and digital marketing
- Local and global reach
- Service range
- Innovation and customer focus
Using these criteria, we identify one #1 editorial recommendation for the assignment described below and compare other qualified options. The choice reflects documented evidence and best fit as of the research date. Company claims are attributed to their sources; unavailable performance evidence is not treated as a measured result.
OUR #1 RECOMMENDATION
#1 — CBRE
For 2027, CBRE is our #1 editorial recommendation among commercial real estate brokerage firms for office leasing for landlords in Riverside–San Bernardino–Ontario, CA.
Best fit: Office leasing linked to an owner investment plan
Our #1 for an office owner connecting leasing with investment planning has a named Ontario landlord specialist who documents financial and yield analysis of lease proposals, offering a direct match between the leasing recommendation and the owner’s decision.
The shortlist at a glance
Our #1 choice and other specialists| Firm or broker | Best fit | Why selected |
|---|---|---|
| #1 CBRE | Office leasing linked to an owner investment plan | Woodford’s stated landlord and analytical practice directly matches the brief. |
| Lee & Associates | Riverside office-property marketing | A property owner’s site identifies Lee-affiliated leasing contacts. |
| WestMar Commercial Real Estate | Menifee and Temecula office owners | Its named broker displays relevant office listings and local specialization. |
CBRE — our #1 for financially informed office leasing
Woodford’s current Ontario biography identifies office landlord representation and investment sales and describes using financial and yield analysis in lease proposals. CBRE: Philip Woodford, office landlord advisory That combination earns our first choice for the stated owner brief. Ask the proposed team to show how lease structures affect the owner’s plan under consistent assumptions. A financial model should expose the choices and their uncertainties rather than imply a guaranteed future value.
Lee & Associates — an owner-confirmed Riverside assignment
Mission Grove Business Park’s own contact page identifies Lee-affiliated Rich Erickson and Andrew Peake as leasing contacts. Mission Grove Business Park: owner-published leasing contacts We include Lee because this is property-side evidence of a specific Riverside assignment, rather than a generic claim of regional coverage. Ask the proposed brokers for a campaign relevant to your building and for examples of owner reporting. The current listing relationship is not a claim about the result of any completed transaction.
WestMar Commercial Real Estate — Southwest Riverside office assets
Mark Esbensen’s current WestMar profile covers office and retail leasing and displays office offerings in Menifee and Temecula. WestMar: Mark Esbensen, office and retail leasing We recommend this local alternative for owners in that part of the county. Require a marketing plan for the specific type of office asset and intended user. San Diego listings on the same profile are outside this guide’s market and are not used as Inland Empire evidence.
Turn the leasing proposal into an owner decision
Ask each finalist to explain the likely user groups, competing space and the property issues that could prevent a tour from becoming a proposal. Require a clear recommendation on presentation, owner work and asking terms, with assumptions visible. Decide who controls brochure accuracy and who updates prospects when the building changes. Reporting should connect activity with choices the owner actually needs to make.
What makes the #1 appropriate
CBRE leads for the financial-planning brief because the documented office practice connects landlord leasing with investment analysis. Lee’s owner-confirmed assignment and WestMar’s local office listings support meaningful alternatives. Compare proposals against the same asset facts and hold the proposed people responsible for execution. Public profiles and listings do not establish a common independently measured ranking of achieved rent, downtime or investment returns, and the recommendations make no promise about those outcomes.