Professional offices and high-end commercial in one of LA's most affluent zip codes. Huntington Drive remains the spine of San Marino's commercial activity, with a discerning tenant base that values quiet excellence.
San Marino is a city of approximately 13,000 residents in one of Los Angeles County's most affluent zip codes — and its commercial market reflects the city's character. There are no shopping malls, no large office towers, no industrial parks. What there is: a thoughtfully curated mix of professional services, high-end medical, financial, and legal tenants along Huntington Drive and Mission Drive, serving a residential community that has trusted these businesses for generations.
That kind of market demands a kind of broker who understands that discretion is the operating standard. San Marino property owners, family offices, and longtime tenants don't want their deals on Twitter. They want quiet execution, careful contracts, and a broker who returns the call.
Kathi has earned that trust across decades of professional relationships in the SGV. Her twenty-plus years at Latham & Watkins, Munger Tolles, and WilmerHale prepared her for the kind of careful, relationship-driven work that San Marino commercial transactions require.
San Marino's commercial activity is concentrated along two main corridors, with limited but high-quality professional and medical office product distributed throughout the city.
San Marino's commercial spine — the corridor that runs west-to-east through the city, anchoring most of its professional-services, financial, and high-end retail tenants. Class A and B office, banks, wealth-management offices, boutique medical, and a measured selection of restaurants and specialty retail.
The secondary commercial corridor running parallel to Huntington — more concentrated in professional offices and small-tenant retail, with strong continuity from long-tenured local businesses. Modest turnover, very long average lease durations.
The neighborhood surrounding the Huntington Library Art Museum & Botanical Gardens — one of the most prestigious cultural anchors in Southern California. The adjacent commercial nodes serve both residents and Huntington visitors, with a refined tenant mix.
Pockets of professional and medical office throughout the city, serving the San Marino community and surrounding SGV residents. These properties move through long-established broker and family-office relationships.
Office, retail, medical, professional services — Kathi handles the full range of San Marino commercial engagements, all with the discretion the market expects.
A working profile of the San Marino commercial market — the kinds of facts that shape decisions in this small, affluent, refined market.
San Marino is a city of approximately 13,000 residents in one of LA County's most affluent zip codes (91108). Incorporated in 1913, it occupies 3.7 square miles between Pasadena and Alhambra. The city is best known for The Huntington Library, Art Museum & Botanical Gardens, and for its top-ranked school district and refined residential character.
San Marino's commercial footprint is unusually narrow and refined. The dominant product is professional and medical office, mostly mid-rise along Huntington Drive, with selective boutique retail, banks and financial offices, and a small number of restaurants and specialty businesses. There is no shopping mall, no industrial inventory, and very little mixed-use product.
San Marino commercial property doesn't trade like any other market in the San Gabriel Valley. The city's extreme affluence and discretion, multigenerational family-office presence, and the gravitational pull of The Huntington Library combine to produce a commercial environment that prizes quiet professionalism over volume. Many of the best opportunities never reach a listing site — they move through trusted broker relationships and family-office networks.
San Marino commercial pricing reflects the city's premium character — and varies meaningfully by Huntington vs. Mission Drive position, by building class, and by tenant credit. For current comps and a rate analysis specific to your situation, reach out to Kathi directly. Discretion guaranteed.
Common questions about the San Marino commercial market. For anything specific to your situation, the answer is always: just call.
San Marino's commercial market is one of the most refined and discreet in the San Gabriel Valley. There are no malls, no large office towers, no industrial parks. What's there is a thoughtfully curated mix of professional services, high-end medical, financial, and legal tenants along Huntington Drive and Mission Drive, anchored by the residential affluence of one of LA County's most exclusive zip codes (91108) and the gravitational pull of The Huntington Library.
Deal flow is low. Tenant continuity is exceptionally high. Most activity moves through tight broker and family-office relationships.
Two primary corridors carry essentially all of San Marino's commercial activity. Huntington Drive is the main spine — Class A and B professional offices, banks, wealth management, high-end medical, and a measured retail and restaurant mix. Mission Drive runs parallel and serves as the secondary corridor, more weighted toward smaller professional offices and long-tenured local businesses. The neighborhood surrounding The Huntington Library also supports a refined commercial node.
San Marino commercial pricing reflects the city's premium character and varies meaningfully by corridor, building class, and tenant credit. Huntington Drive Class A office prices very differently from Mission Drive small professional space.
For accurate current comps tailored to a specific space, contact Kathi directly at 626.898.2308 or kathi.constanzo@cbcnrt.com. Discretion is the operating standard.
For the right investor, yes — particularly for buyers seeking a generational holding rather than short-term value-add. San Marino's combination of extreme affluence, strict design review, top-ranked schools, and the cultural anchor of The Huntington Library creates exceptional long-term stability. Tenant continuity is among the highest in the SGV.
The trade-off: deal flow is low and the market doesn't reward speculation. If your thesis is long-hold, San Marino is one of LA County's most reliable commercial markets.
San Marino's inventory is concentrated in professional and medical office (mostly along Huntington Drive), with selective boutique retail, banks and financial services offices, and a small number of restaurants and specialty businesses. There is no shopping mall, no industrial inventory, and very little new mixed-use product. Opportunities typically involve existing buildings — repositioning, lease-up, or hold acquisitions.
The Huntington Library, Art Museum & Botanical Gardens is one of Southern California's most prestigious cultural institutions, drawing visitors from across the world and supporting an adjacent commercial node that serves both residents and Huntington patrons. Beyond direct economic impact, The Huntington shapes the city's identity — and that cultural gravity translates into commercial-property values that hold up unusually well through cycles.
San Marino is one of four primary markets Kathi serves with equal depth.
San Marino runs on discretion and relationships. Fifteen minutes with Kathi — confidentially — will tell you whether she's the right partner. She answers her own phone.