Best Realtors in San Lorenzo, CA (2026 Guide)
By Matthew Martinez
San Lorenzo is an unincorporated community of about 29,600 people (2020 Census) between San Leandro and Hayward, known for its postwar single-family neighborhoods and larger-than-average households. Because it has no city government, Alameda County handles planning and permits, so the agent you hire should know how County rules and the local sanitary district affect a sale.
This guide is published by Diamond Real Estate Group, one of the brokerages listed. Our broker is listed first; other agents are in alphabetical order. The order is not a ranking, and inclusion is not an endorsement.
How we chose the agents in this guide
Each agent below met three checks in October 2026:
- A current California license. We opened each agent’s record on the California Department of Real Estate (DRE) public lookup and confirmed the name, license type (salesperson or broker) and "Licensed" status with a brokerage affiliation.
- A named brokerage. Each agent’s DRE record shows the brokerage they work under.
- A public profile that names San Lorenzo. We opened each agent’s brokerage profile and confirmed it lists San Lorenzo among the areas served.
We did not rank agents, and we did not consider sales volume, reviews or awards. Licenses and affiliations change, so verify the license yourself before you sign anything, and interview more than one agent.
San Lorenzo housing in numbers
| Census measure | San Lorenzo CDP |
|---|---|
| Population (April 1, 2020 Census) | 29,581 |
| Owner-occupied housing unit rate (2019–2023) | 66.3% |
| Median value of owner-occupied homes (2019–2023) | $833,800 |
| Median gross rent (2019–2023) | $2,193 |
| Median household income (2019–2023, 2023 dollars) | $110,495 |
| Persons per household (2019–2023) | 3.36 |
| Mean travel time to work (2019–2023) | 32.1 minutes |
Source: U.S. Census Bureau QuickFacts, San Lorenzo CDP, California. When we checked, QuickFacts showed no current-year population estimate for this unincorporated census-designated place, so we used the 2020 Census count and 2019–2023 survey figures.
With about two-thirds of homes owner-occupied and more than three people per household, San Lorenzo is largely a community of family-owned single-family homes. These are five-year survey figures, not current sale prices; ask an agent for recent sales of similar homes on nearby streets.
An unincorporated community under County plans
San Lorenzo is listed as an unincorporated community in the Alameda County city directory, separate from the City of San Leandro to the north. County planning applies: the Eden Area General Plan covers San Lorenzo along with Ashland, Cherryland, Hayward Acres and Fairview, and the San Lorenzo Specific Plan sets development standards for its plan area. Both are listed on the County’s general and area plans page.
Mailing addresses near San Leandro and Hayward can be misleading, so confirm from the parcel record whether a home is in San Lorenzo or in a neighboring city. For more, see our San Lorenzo real estate guide.
Costs and rules specific to a San Lorenzo purchase
- Transfer tax. San Lorenzo is unincorporated, so no city transfer tax applies; the Alameda County Clerk-Recorder collects only the county tax of $0.55 per $500 of value, about $460 on an $830,000 sale. By comparison, a home across the line in San Leandro also pays a city tax of $11 per $1,000. Our California transfer tax guide explains who usually pays.
- Sewer lateral certificate. Where a home is served by the Oro Loma Sanitary District, the district’s permit page says a sewer lateral inspection certificate must be provided before close of escrow; if none is available, the lateral must be inspected and any repairs completed first. Confirm with the district whether a specific address is in its service area.
- County permits. Additions, garage conversions and ADUs go through County planning and building, not a city. Ask for permit records and final inspections on any improvement, and check whether the San Lorenzo Specific Plan applies to the parcel.
- Hazard disclosures. The natural hazard disclosure report summarizes mapped earthquake and liquefaction zones, and you can check flood status on the FEMA Flood Map Service Center.
- Special taxes. Sellers must make a good-faith effort to provide a notice of special tax districts under Civil Code section 1102.6b. Review the direct charges on the property tax bill in escrow.
San Lorenzo agents with verified licenses
Matthew Martinez, Diamond Real Estate Group (publisher of this guide)
Matthew Martinez is the Founder, CEO and Managing Broker of Diamond Real Estate Group. He is based in Sonoma County; contact him to discuss a purchase or sale in San Lorenzo. Contact Matthew · Broker #01869679 · Diamond Group Estates Inc DBA Diamond Real Estate Group, DRE #02163490
| Agent | Brokerage | License | Areas named on profile |
|---|---|---|---|
| Mustafa Afzali | Coldwell Banker Realty, Fremont office | Salesperson #01514891 | San Lorenzo, San Leandro, Hayward, Castro Valley, Fremont and other East Bay and South Bay cities |
| Veronica Arreola | RE/MAX Accord, Castro Valley | Salesperson #01356190 | Hayward, San Leandro, San Lorenzo, Castro Valley |
| Lourdes Beaty | RE/MAX Accord, Castro Valley | Salesperson #01265365 | Castro Valley, San Lorenzo, San Leandro, Hayward, Dublin, Livermore, Pleasanton, San Ramon, Brentwood, Oakland |
| Myriam Castillo | RE/MAX Synergy Group, Hayward | Broker #01860375 | Hayward, San Lorenzo, Union City, Fremont, Castro Valley |
| Amanda Edwards | Century 21 Masters | Salesperson #02250100 | San Lorenzo, Castro Valley, Hayward, San Leandro, Pleasanton, Dublin |
| Stella Hui | Coldwell Banker Realty, Castro Valley office | Salesperson #01191225 | Castro Valley, San Lorenzo, San Leandro, Hayward and other East Bay cities |
| Angel Lax | Century 21 Masters | Salesperson #02184996 | Castro Valley, San Lorenzo, San Leandro, Oakland, Union City, Livermore, Dublin, Richmond, El Cerrito |
| Sinath Thi | Coldwell Banker Realty, Castro Valley office | Broker #01922809 | San Lorenzo, San Leandro, Hayward, Castro Valley and other Bay Area and Central Valley cities |
Affiliations shown on the DRE records: Coldwell Banker Realty agents work under NRT West, Inc. (DRE #01908304); RE/MAX Accord agents work under S&J Stadtler Inc (DRE #01491373), from 3329 Castro Valley Blvd; Century 21 Masters agents work under Full Realty Services Inc (DRE #01849354); and Myriam Castillo, a broker, is listed as a broker associate for Synergy Real Estate Group Inc. (DRE #01900869), from the RE/MAX Synergy Group office at 781 W Tennyson Rd, Hayward. Broker-licensed agents work as broker associates.
How to vet a San Lorenzo agent
- Ask them to confirm the community. A good San Lorenzo agent checks the parcel record, since homes near San Leandro and Hayward can share addresses but not rules or taxes.
- Ask about the sewer lateral certificate. Ask whether the home is served by Oro Loma and how they schedule the inspection so it does not delay closing.
- Ask how they check County permits. Garage conversions and additions are common in postwar homes; ask how they confirm County permits and final inspections.
- Ask about ADU potential. If you want an ADU, ask whether they have worked with County planning and the Eden Area plans.
- Ask for comparables from similar homes. Ask for recent sales of homes with similar size, lot and updates on nearby streets.
- Verify the license yourself. Look the agent up on the DRE site and confirm the brokerage matches what they tell you.
San Lorenzo questions we hear
Is San Lorenzo a city?
No. The Alameda County city directory lists it as an unincorporated community, so County government handles planning, permits and many services.
Does San Lorenzo have a city transfer tax?
No. Only the county tax of $0.55 per $500 applies, collected by the Alameda County Clerk-Recorder. A home inside San Leandro city limits also pays San Leandro’s city tax, so confirm the jurisdiction.
Do I need a sewer lateral certificate to sell in San Lorenzo?
If the home is served by the Oro Loma Sanitary District, yes. The district’s permit page says a certificate must be provided before close of escrow, or the lateral must be inspected and repaired first.
Which plans govern development in San Lorenzo?
The County’s Eden Area General Plan and, for its plan area, the San Lorenzo Specific Plan. Ask County planning which apply to a parcel.
Should I interview more than one San Lorenzo agent?
Yes. Interview at least two or three, ask each for recent sales near the homes you are considering, and compare how they explain County permits and the lateral certificate.
Sources & notes
- California DRE public license lookup (individual records linked in the table)
- Coldwell Banker Realty, Castro Valley office agent roster; RE/MAX agents serving San Lorenzo; Century 21 Masters profiles linked in the table
- U.S. Census Bureau QuickFacts: San Lorenzo CDP, California (2020 Census population; 2019–2023 ACS figures)
- Alameda County Clerk-Recorder: real property transfer tax
- Alameda County city directory
- Alameda County general and area plans, including the Eden Area General Plan and San Lorenzo Specific Plan
- Oro Loma Sanitary District permits
- FEMA Flood Map Service Center
- California Civil Code section 1102.6b (Justia)
- License records checked October 2026 on the California DRE public lookup. Last reviewed October 2026 by Matthew Martinez.
Related: San Lorenzo real estate guide · San Lorenzo home valuation · Alameda County agents guide · 20 tips for choosing a real estate agent
License-status update: the linked California DRE public records were checked November 2, 2026 and showed "Licensed." Public profile research retains the dates stated above. Names on DRE records may differ from public profile names; verify status and brokerage before selecting an agent.
