Property summary
This exceptional investment opportunity presents a two-building, multi-tenant medical office complex located at 3505-3515 Lone Tree Way, Antioch, CA 94509, in Contra Costa County. The property, built in 1990, boasts 28,052 square feet of gross leasable area situated on a 3.26-acre lot. Currently housing seven tenants, including specialists in neurology and ophthalmology, a mental health clinic, and other medical and related businesses, the property enjoys a 95.35% occupancy rate. Several… tenants have occupied the space for over two decades, demonstrating strong tenant loyalty and stability. The property features ample parking with 114 surface stalls, including seven handicap-accessible spaces, and convenient access to Highway 4. The asking price is $4,200,000, representing a current cap rate of 7.26% and a pro-forma cap rate of 8.01%. The Net Operating Income (NOI) is $304,822, with a pro-forma NOI of $336,321. This Class C property is offered fee simple and features nine units spread across two, two-story buildings. Its prime location in Antioch, within easy reach of major transportation arteries and the Antioch BART station, makes it an attractive investment for both immediate returns and long-term growth potential. The property's strong tenant base and established presence in the community contribute to its exceptional value proposition.
Ownership intelligence
Resolved identity, portfolio, hold profile and investor signals. Included in the full report.
Owner contacts
Skip-traced phones and e-mails of the owner. Included with the full report.
Mortgages
Recorded lenders, amounts and estimated maturities of the owner's loan book — in the full report.
Property tax
No data for this sectionNo tax or assessment record is on file for this parcel in the county feed.
Value estimate
· Sep 2026No data for this sectionNo value estimate could be modeled: the record carries too little market input for this parcel.
Recently sold
No data for this sectionNo cleaned sale $/SF benchmark exists for this use type in this ZIP, submarket or county yet.
Cap rate analysis
No income signal is modeled for this parcel yet — the Cap Rates tab runs the workflow.
Zoning insight
No data for this sectionNo zoning code is on file for this parcel. Coverage grows with every catalog release.
Location intelligence
Demand index: how under-served this business type is around this point — modeled from the LocInt grid (area demand vs. what already operates, adjusted by real visit traffic). Higher means stronger unmet demand.
Location
Every figure names its source: public record, benchmark, or modeled. Coverage varies by property — thin data is stated as missing, never invented.
Comparables
6 recent transactions · within 1.5 miComparable in this City
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Cap rate calculated from real income and expense signals, benchmarked against sales of similar assets nearby.
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The recorded zoning designation, what the district officially allows, and the municipal source it comes from.
No zoning code is on file for this parcel. Zoning coverage grows with every catalog release — check back, or open Location Intelligence for use analysis of this corner.
Phones and e-mails of the people behind this property's owner, traced from licensed contact data.
Owner phones and e-mails come with the full report for this property - traced from licensed contact data, with verification and Do-Not-Call flags on every number.
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The mortgage data is behind the paid report: recorded loans of the owner - lender, amount, rate and the estimated maturity - as part of the Ownership Intelligence workspace.
Registration is required before any owner information is shown.
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