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$1,825,000
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Property Description
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 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!
Full Property Details
Full Property Details for 117 N Delaware St
General
- Sold For: $1,825,000
- Status: Closed
- Type: Duplex
- Source: RE_Infolink
- MLS ID: ML82043896
- Added to Site: 78 day(s) ago
Interior
- Flooring: Carpet, Tile, Vinyl / Linoleum
Additional Information
- Extras: Not Applicable
- Security/Safety: None
Parking
- Garage Spaces: 4
- Parking Features: Attached Garage, Carport , On Street
Location
- Area: Eastern Addition/Downtown Area
- County: San Mateo
Heating & Cooling
- Cooling Type: None
- Heating Type: Central Air (Forced Air)
Utilities
- Sewer: Public Sewer
- Water: Public
- Utility Description: Public Utilities
- Metering: Master Water, Separate Electric, Separate Gas
Structural Information
- Foundation: Concrete Perimeter
- Roof: Shingle
- Disability Access: None
- Square Feet: 4,165
- Year Built: 1990
Unit Information
Unit 1
- Bedrooms: 3
Unit 2
- Bedrooms: 3
Lot Features
- Minimum Lot Size: 5750
- Lot Size (Sq. Ft.): 5,750
- Building Sites: 1
- Zoning: RM0004
Listed by Gilmartin Group, Tim Gilmartin and Gilmartin Group, Kathryn Gerhardt
Sold by Gilm, Kathryn Gerhardt
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Schools
Schools serving 117 N Delaware St
School Districts:San Mateo Union High School District, San Mateo-Foster City Elementary School District
| Name | Grades | Distance |
|---|---|---|
Highlands Elementary School, San Mateo, CA 2320 Newport Street, San Mateo, CA 94402 | K-5 | 3.5 mi |
Borel Middle School 425 Barneson Avenue, San Mateo, CA 94402 | 6-8 | 1.5 mi |
San Mateo High School 506 North Delaware Street, San Mateo, CA 94401 | 9-12 | 0.5 mi |
Disclaimer:
School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.
Price & Sales History for 117 N Delaware St
Date
Details
Price
Change
Source
6/26/2026
Sold
$1,825,000
-2.93%
MLS
4/21/2026
Listed
$1,880,000
—
MLS
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
117 N Delaware St, San Mateo, CA 94401 (MLS# ML82043896) is a Duplex property that was sold at $1,825,000 on June 26, 2026. Want to learn more about 117 N Delaware St? Do you have questions about finding other Duplex real estate for sale in San Mateo? You can browse all San Mateo real estate or contact a Coldwell Banker agent to request more information.

