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A high-quality Peninsula duplex with stable income, minimal expense drag, and clearly defined long-term upside.117 N. Delaware Street presents a rare opportunity to acquire a well-located duplex in the heart of San Mateo. The property consists of two large units, each configured as 3 bedrooms and 2.5 bathrooms with garage parking offering strong fundamentals for both owner-occupiers and long-term investors. With tenants in place for over 20 years, the asset provides stable in-place income and a clear path for predictable rent growth under California rent control guidelines. The property currently generates $7,610 per month ($91,320 annually), with a highly efficient expense. Market rents for comparable units are estimated at approximately $4,500+ per month, indicating meaningful long-term upside. At market levels, the property would generate approximately $108,000. Generous layouts, strong rental demand and a desirable unit mix support long-term growth and income optimization. Don't miss this rare opportunity whether as an investment or a property you could occupy!
| DAYS ON MARKET | 1 | LAST UPDATED | 4/21/2026 |
|---|---|---|---|
| YEAR BUILT | 1990 | COMMUNITY | 699 - Not Defined |
| GARAGE SPACES | 4.0 | COUNTY | San Mateo |
| STATUS | Active | PROPERTY TYPE(S) | Residential Income |
| ADDITIONAL DETAILS | |
| AIR | None |
|---|---|
| AIR CONDITIONING | Yes |
| AREA | 699 - Not Defined |
| GARAGE | Yes |
| HEAT | Central |
| LOT | 5750 sq ft |
| LOT DIMENSIONS | 5750 |
| PARKING | Carport |
| SEWER | Public Sewer |
| STORIES | 2 |
| TAXES | 25839 |
| WATER | Public |
TOTAL MONTHLY PAYMENT
| SATELLITE VIEW |
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Based on information from California Regional Multiple Listing Service, Inc. as of 4/22/26 11:24 AM PDT and /or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information
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